CN204269804U - A kind of Insulation monitoring validity check circuit - Google Patents
A kind of Insulation monitoring validity check circuit Download PDFInfo
- Publication number
- CN204269804U CN204269804U CN201420795731.5U CN201420795731U CN204269804U CN 204269804 U CN204269804 U CN 204269804U CN 201420795731 U CN201420795731 U CN 201420795731U CN 204269804 U CN204269804 U CN 204269804U
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- self
- disconnecting relay
- insulation
- inspection resistance
- validity check
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Abstract
The utility model provides a kind of simple and reliable Insulation monitoring validity check circuit, comprises electric battery, battery management system, also comprises the first self-inspection resistance, the second self-inspection resistance, the first disconnecting relay, the second disconnecting relay.The validity of insulation detecting circuit can be checked, the Timeliness coverage when insulation detecting circuit itself breaks down, because the fault of testing circuit causes electric shock risk when avoiding automobile generation insulation fault when automobile starting.
Description
Technical field
The utility model relates to a kind of Insulation monitoring validity check circuit, refers more particularly to the circuit checked electric automobile insulation validity.
Background technology
Current electric automobile has insulation detecting circuit, but Full Vehicle System is the result of passive reception Insulation monitoring, and insulation detecting circuit itself has not had reliable self-diagnostic function, undetected situation likely can occur and occur, be a huge potential safety hazard.
After there is insulation, Full Vehicle System can not report in time and maybe can not report, for the fault Full Vehicle System being a level of security the highest, current insulation detecting circuit goes out to report self fault, caused fault not report, Full Vehicle System can not receive correct insulation fault information, in this case, as overhauled not in time, the risk of electric shock will be had.
Utility model content
The purpose of this utility model is to provide a kind of simple and reliable Insulation monitoring validity check circuit, the validity of insulation detecting circuit can be checked when automobile starting, the Timeliness coverage when insulation detecting circuit itself breaks down, because the fault of testing circuit causes electric shock risk when avoiding automobile generation insulation fault.
A kind of Insulation monitoring validity check circuit described in the utility model, comprises the first self-inspection resistance, the second self-inspection resistance, the first disconnecting relay, the second disconnecting relay.First self-inspection resistance one end connects the total positive pole of electric battery, and the other end is by the output loop ground connection of the first disconnecting relay.Second self-inspection resistance one end connects the total negative pole of electric battery, and the other end is by the output loop ground connection of the second disconnecting relay.First disconnecting relay, the second disconnecting relay are controlled by battery management system or Full Vehicle System.
First self-inspection resistance and the second self-inspection resistance are high-power resistance.
First self-inspection resistance and the second self-inspection resistance form by being more than or equal to 1 resistant series.
The utility model increases self-inspection loop on original circuit, can realize the self-inspection to insulation detecting circuit, simple and reliable, and the validity of available periodic detection insulation detecting circuit, can apply in batches.
Accompanying drawing explanation
Fig. 1 is Insulation monitoring validity check circuit theory diagrams.
Embodiment
Those skilled in the art will recognize that for convenience and below in conjunction with drawings and Examples, the utility model to be described in detail.
As shown in Figure 1, first self-inspection resistance 1 one end connects the total positive pole of electric battery, and the other end is by the output loop ground connection of the first disconnecting relay 3.Second self-inspection resistance 2 one end connects the total negative pole of electric battery, and the other end is by the output loop ground connection of the second disconnecting relay 4.First disconnecting relay 3, second disconnecting relay 4 is controlled by battery management system or Full Vehicle System.
The basic step of utility model works is as follows:
1, after car load powers on, insulation detecting circuit does not report insulation fault.
2, controlled adhesive first disconnecting relay 3, second disconnecting relay 4 by battery management system, the first self-inspection resistance 1, second self-inspection resistance 2 is accessed in loop respectively.
3, confirm whether insulation detecting circuit reports insulation resistance, and the insulating resistance value reported and self-inspection resistance value are compared.
If 4 two value differences are no more than 20%, then think that insulation detecting circuit is normal.
If phase difference is more than 20%, or does not report insulating resistance value, be then judged to be that insulation detecting circuit lost efficacy, report Full Vehicle System to overhaul.
Be more than wherein specific implementation of the present utility model, it describes comparatively concrete and detailed, but therefore can not be interpreted as the restriction to the utility model the scope of the claims.It should be pointed out that for the person of ordinary skill of the art, without departing from the concept of the premise utility, can also make some distortion and improvement, these apparent replacement forms all belong to protection domain of the present utility model.
Claims (4)
1. an Insulation monitoring validity check circuit, comprises electric battery, battery management system, it is characterized in that: also comprise the first self-inspection resistance (1), the second self-inspection resistance (2), the first disconnecting relay (3), the second disconnecting relay (4); Described first self-inspection resistance (1) one end connects the total positive pole of electric battery, and the other end is by the output loop ground connection of the first disconnecting relay (3); Described second self-inspection resistance (2) one end connects the total negative pole of electric battery, and the other end is by the output loop ground connection of the second disconnecting relay (4); Described first disconnecting relay (3), the second disconnecting relay (4) are controlled by battery management system.
2. according to Insulation monitoring validity check circuit described in claim 1, it is characterized in that: Full Vehicle System replaces battery management system to control the first disconnecting relay (3), the second disconnecting relay (4).
3., according to Insulation monitoring validity check circuit described in claim 1, it is characterized in that: described first self-inspection resistance (1) and the second self-inspection resistance (2) are high-power resistance.
4., according to Insulation monitoring validity check circuit described in claim 1, it is characterized in that: described first self-inspection resistance (1) and the second self-inspection resistance (2) form by being more than or equal to 1 resistant series.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420795731.5U CN204269804U (en) | 2014-12-17 | 2014-12-17 | A kind of Insulation monitoring validity check circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420795731.5U CN204269804U (en) | 2014-12-17 | 2014-12-17 | A kind of Insulation monitoring validity check circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204269804U true CN204269804U (en) | 2015-04-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420795731.5U Active CN204269804U (en) | 2014-12-17 | 2014-12-17 | A kind of Insulation monitoring validity check circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204269804U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109061307A (en) * | 2018-09-06 | 2018-12-21 | 北京长城华冠汽车科技股份有限公司 | The method for diagnosing faults of insulating resistor detecting circuit |
| CN111060791A (en) * | 2019-12-30 | 2020-04-24 | 华人运通(江苏)技术有限公司 | Insulation fault detection method and device, electric vehicle, terminal equipment and medium |
-
2014
- 2014-12-17 CN CN201420795731.5U patent/CN204269804U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109061307A (en) * | 2018-09-06 | 2018-12-21 | 北京长城华冠汽车科技股份有限公司 | The method for diagnosing faults of insulating resistor detecting circuit |
| CN111060791A (en) * | 2019-12-30 | 2020-04-24 | 华人运通(江苏)技术有限公司 | Insulation fault detection method and device, electric vehicle, terminal equipment and medium |
| CN111060791B (en) * | 2019-12-30 | 2022-05-03 | 华人运通(江苏)技术有限公司 | Insulation fault detection method and device, electric vehicle, terminal equipment and medium |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |