CN210243809U - Efficient pencil detection circuitry - Google Patents
Efficient pencil detection circuitry Download PDFInfo
- Publication number
- CN210243809U CN210243809U CN201920350536.4U CN201920350536U CN210243809U CN 210243809 U CN210243809 U CN 210243809U CN 201920350536 U CN201920350536 U CN 201920350536U CN 210243809 U CN210243809 U CN 210243809U
- Authority
- CN
- China
- Prior art keywords
- switch
- battery
- circuit
- comparator
- pin
- 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.)
- Expired - Fee Related
Links
Images
Abstract
The utility model discloses an efficient pencil detection circuitry, include: the signal display circuit comprises a central processing unit (MCU) and a man-machine interaction circuit; the battery wiring harness leakage monitoring circuit is a battery monitoring IC and a signal isolation module; the system comprises a battery wiring harness misconnection monitoring circuit, a first comparator A1, a second comparator A2, a first reference source Ref1, a second reference source Ref2, a first resistor R1, a second resistor R2, a third resistor R3 and a fourth resistor R4; a signal sampling circuit, which is a first switch S1, a second switch S2, a third switch S3; a first power supply. The utility model has the characteristics of factor of safety is high, easy operation, conveniently carries etc to have extensive using value in the aspect of new energy automobile battery sampling pencil installation.
Description
Technical Field
The utility model relates to pencil detection area especially involves an efficient pencil detection circuitry.
Background
The electric automobile is praised as the most great change of the new century, the safety of the electric automobile is always the most important, and the lithium battery is the most important unit of the power composition of the electric automobile. At present, when a battery sampling wire harness is installed, a manual installation method is generally adopted, hundreds of new energy automobile power battery sampling wire harnesses are generally adopted, the wire harnesses are frequently connected in a wrong or missed manner when the wire harnesses are installed manually, if the connector of the wire harness which is connected in the wrong manner is directly connected to a battery monitoring unit, the battery monitoring unit can be damaged fatally, and the whole battery pack is more likely to be ignited spontaneously.
The traditional detection scheme can only detect the misconnection problem of the battery wiring harness, the device is complex to realize, and the fault of the battery detection wiring harness is judged to be misconnection or missing connection through the switching of the switch by a circuit formed by a common resistor, a comparator and a battery monitoring IC.
SUMMERY OF THE UTILITY MODEL
To the above, the utility model provides an efficient pencil detection circuitry to whether the mounted state that detects battery sampling pencil is out of order.
In order to achieve the above object, the present invention provides the following solutions: an efficient harness detection circuit comprising:
the signal display circuit comprises a central processing unit (MCU) and a man-machine interaction circuit;
the battery wiring harness leakage monitoring circuit comprises a battery monitoring IC and a signal isolation module;
the system comprises a battery wiring harness misconnection monitoring circuit, a battery wiring harness misconnection monitoring circuit and a battery wiring harness misconnection monitoring circuit, wherein the battery wiring harness misconnection monitoring circuit comprises a first comparator A1, a second comparator A2, a first reference source Ref1, a second reference source Ref2, a first resistor R1, a second resistor R2, a third resistor R3 and a fourth resistor R4;
a signal sampling circuit including a first switch S1, a second switch S2, a third switch S3;
a first power supply.
Preferably, the input end of the MCU in the signal display circuit is connected with the signal isolation module, the other input end of the MCU is connected with the output end of the comparator A1, the other input end of the MCU is connected with the input end of the comparator A2, and the output end of the MCU is connected with human-computer interaction.
Preferably, the output end of the battery wiring harness leakage monitoring circuit is connected with the signal isolation module, the input end of the signal isolation module is connected with the output end of the battery monitoring IC, and the battery monitoring IC is connected with pin 1 of the S1 switch, pin 1 of the S2 switch and pin 1 of the S3 switch.
Preferably, the signal isolation module is a magnetic isolation IC, and the battery monitoring IC is LINEAR LTC 6804-1.
Preferably, R1 in the battery harness misconnection monitoring circuit is connected to pin 2 of the S1 switch, the other end of R1 is connected to R2 and to "+" of the comparator a1, the other end of R2 is connected to pin 2 of the S2 switch and to R3 and to input of the reference source Ref1, the output of the reference source Ref1 is connected to "-" of the comparator a1, R3 is connected to R4 and to "+" of the comparator a2, R4 is connected to pin 2 of the S3 switch and to input of the reference source Ref2, and the output of the reference source Ref2 is connected to "-" of the comparator a 2.
Preferably, the reference source is LM 236D-2-5.
Preferably, the S1 switch is a movable double-contact switch, the pin 3 of the S1 switch is connected to the negative electrode of the B1 battery, the S2 switch is a movable double-contact switch, the pin 3 of the S2 switch is connected to the negative electrode of the B2 battery, the S3 switch is a movable double-contact switch, and the pin 3 of the S2 switch is connected to the negative electrode of the B battery.
Preferably, the first power source is a battery pack.
Compared with the prior art, the utility model, following beneficial effect has:
the utility model discloses a switch S1, switch S2, switch S3' S switching realizes the wrong grafting and the function detection that leaks to connect of pencil, compares resistance sampling voltage and reference source voltage each other through the comparator simultaneously to export MCU with the result of comparison and handle, then show through human-computer interaction with the result of handling. Therefore, the utility model discloses it is simple to have the circuit realization, low cost, beneficial effect such as easy operation.
Drawings
FIG. 1 is a schematic diagram of the overall circuit of the present invention;
fig. 2 is a detection flow chart of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by the skilled in the art without creative efforts belong to the protection scope of the present invention.
Referring to fig. 1 and 2, the present invention provides an efficient wire harness detection circuit for detecting whether there is a fault in the installation status of a battery sampling wire harness. The method comprises the following steps:
the signal display circuit 1 comprises a central processing unit (MCU) and a man-machine interaction circuit;
the battery wiring harness leakage monitoring circuit 2 comprises a battery monitoring IC and a signal isolation module;
the system comprises a battery wiring harness misconnection monitoring circuit 3, wherein the battery wiring harness misconnection monitoring circuit comprises a first comparator A1, a second comparator A2, a first reference source Ref1, a second reference source Ref2, a first resistor R1, a second resistor R2, a third resistor R3 and a fourth resistor R4;
a signal sampling circuit 4 including a first switch S1, a second switch S2, a third switch S3;
a first power supply 5.
The input end of the MCU in the signal display circuit is connected with the signal isolation module, the other input end of the MCU is connected with the output end of the comparator A1, the other input end of the MCU is connected with the input end of the A2 of the comparator, and the output end of the MCU is connected with human-computer interaction.
The output end of the battery wire harness leakage monitoring circuit is connected with the signal isolation module, the input end of the signal isolation module is connected with the output end of the battery monitoring IC, and the battery monitoring IC is connected with the No. 1 pin of the S1 switch, the No. 1 pin of the S2 switch and the No. 1 pin of the S3 switch.
The signal isolation module is a magnetic isolation IC, and the battery monitoring IC is LINEAR LTC 6804-1.
R1 in the battery wire harness misconnection monitoring circuit is connected with a pin 2 of an S1 switch, the other end of R1 is connected with R2 and simultaneously connected with a plus of a comparator A1, the other end of R2 is connected with a pin 2 of an S2 switch and simultaneously connected with R3 and simultaneously connected with an input end of a reference source Ref1, an output of the reference source Ref1 is connected with a minus of the comparator A1, R3 is connected with R4 and simultaneously connected with a plus of a comparator A2, R4 is connected with a pin 2 of an S3 switch and simultaneously connected with an input end of the reference source Ref2, and an output of the reference source Ref2 is connected with a plus of a comparator A2.
The reference source is LM 236D-2-5.
The S1 switch is a movable double-contact switch, the pin 3 of the S1 switch is connected with the negative electrode of the B1 battery, the S2 switch is a movable double-contact switch, the pin 3 of the S2 switch is connected with the negative electrode of the B2 battery, the S3 switch is a movable double-contact switch, and the pin 3 of the S2 switch is connected with the negative electrode of the B battery.
The first power source is provided as a battery pack.
Examples：
Referring to fig. 1 and 2, the present invention provides the following technical solutions: an electrically leakage insulated high voltage detection circuit comprising:
(1) s01, firstly, selecting a group of parameters R1 of 500K omega, R2 of 500K omega, R3 of 500K omega and R4 of 500K omega, and throwing the switch unit S1, the switch unit S2 and the switch unit S3 to a No. 2 pin;
(2) s02, observing whether the wiring harness is misconnected through human-computer interaction;
(3) s03, if the wrong wiring harness is connected, the wrong wiring harness is checked until the man-machine interaction shows that the wrong wiring harness is not connected;
(4) s04, throwing the switch unit S1, the switch unit S2 and the switch unit S3 to the No. 1 pin;
(5) s05, observing whether the wiring harness is missed or not through human-computer interaction;
(6) s06, if the missed connection exists, checking the missed connection wire harness until the man-machine interaction shows that no missed connection wire harness exists;
(7) and S07, the examination is ended.
Claims (8)
1. An efficient harness detection circuit, comprising:
the signal display circuit comprises a central processing unit (MCU) and a man-machine interaction circuit;
the battery wiring harness leakage monitoring circuit comprises a battery monitoring IC and a signal isolation module;
the system comprises a battery wiring harness misconnection monitoring circuit, a battery wiring harness misconnection monitoring circuit and a battery wiring harness misconnection monitoring circuit, wherein the battery wiring harness misconnection monitoring circuit comprises a first comparator A1, a second comparator A2, a first reference source Ref1, a second reference source Ref2, a first resistor R1, a second resistor R2, a third resistor R3 and a fourth resistor R4;
a signal sampling circuit including a first switch S1, a second switch S2, a third switch S3;
a first power supply.
2. The efficient wire harness detection circuit of claim 1, wherein an input terminal of the MCU in the signal display circuit is connected to the signal isolation module, another input terminal of the MCU is connected to an output terminal of the comparator A1, another input terminal of the MCU is connected to an input terminal of the comparator A2, and an output terminal of the MCU is connected to human-computer interaction.
3. The efficient wire harness detection circuit as claimed in claim 2, wherein the output terminal of the battery wire harness leakage monitoring circuit is connected to the signal isolation module, the input terminal of the signal isolation module is connected to the output terminal of the battery monitoring IC, and the battery monitoring IC is connected to pin 1 of the S1 switch, pin 1 of the S2 switch and pin 1 of the S3 switch.
4. A high efficiency harness routing circuit as in claim 3 wherein said signal isolation module is a magnetic isolation IC and said battery monitoring IC is LINEAR LTC 6804-1.
5. The efficient wire harness detection circuit as claimed in claim 4, wherein R1 of the battery wire harness misconnection monitoring circuit is connected to pin 2 of the S1 switch, the other end of R1 is connected to R2 and to "+" of comparator A1, the other end of R2 is connected to pin 2 of the S2 switch and to R3 and to an input terminal of reference source Ref1, an output of reference source Ref1 is connected to "-" of comparator A1, R3 is connected to R4 and to "+" of comparator A2, R4 is connected to pin 2 of the S3 switch and to an input terminal of reference source Ref2, and an output of reference source Ref2 is connected to "-" of comparator A2.
6. An efficient circuit for detecting a wire harness as claimed in claim 5 wherein the reference source is LM 236D-2-5.
7. The efficient wire harness detection circuit of claim 6, wherein the S1 switch is configured as a moving two-contact switch, pin 3 of the S1 switch is connected to the negative terminal of the B1 battery, the S2 switch is configured as a moving two-contact switch, pin 3 of the S2 switch is connected to the negative terminal of the B2 battery, the S3 switch is configured as a moving two-contact switch, and pin 3 of the S2 switch is connected to the negative terminal of the B battery.
8. A high efficiency harness routing circuit as in claim 7 wherein the first power source is a battery pack.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920350536.4U CN210243809U (en) | 2019-03-18 | 2019-03-18 | Efficient pencil detection circuitry |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920350536.4U CN210243809U (en) | 2019-03-18 | 2019-03-18 | Efficient pencil detection circuitry |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210243809U true CN210243809U (en) | 2020-04-03 |
Family
ID=69961361
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920350536.4U Expired - Fee Related CN210243809U (en) | 2019-03-18 | 2019-03-18 | Efficient pencil detection circuitry |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210243809U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111645617A (en) * | 2020-05-14 | 2020-09-11 | 摩登汽车(盐城)有限公司 | Wire harness diagnosis system for three electric systems of electric automobile and electric automobile |
-
2019
- 2019-03-18 CN CN201920350536.4U patent/CN210243809U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111645617A (en) * | 2020-05-14 | 2020-09-11 | 摩登汽车(盐城)有限公司 | Wire harness diagnosis system for three electric systems of electric automobile and electric automobile |
| CN111645617B (en) * | 2020-05-14 | 2021-11-23 | 摩登汽车(盐城)有限公司 | Wire harness diagnosis system for three electric systems of electric automobile and electric automobile |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202008524U (en) | Charging connector contact resistance detector and charging post | |
| CN102111006A (en) | Charging connector contact resistance detection device and charging control method | |
| CN210243809U (en) | Efficient pencil detection circuitry | |
| CN106299180B (en) | The combination of electric tool and battery pack | |
| CN208872841U (en) | A kind of electric automobile power battery group insulation detecting circuit | |
| CN207742316U (en) | Battery detection circuit and battery management system | |
| CN201015001Y (en) | Cable detecting device | |
| CN104375021A (en) | Device and method for detecting lithium battery pack protection board | |
| CN204166063U (en) | A kind of lithium battery group fender pick-up unit | |
| CN208461499U (en) | A kind of battery charger | |
| CN207976174U (en) | A kind of electric automobile power battery group voltage and temperature acquisition wiring harness test tooling | |
| CN107783029B (en) | Test system and test method for PCBA (printed circuit board assembly) | |
| CN115840121A (en) | Insulation detection circuit of energy storage high-voltage battery system and detection method thereof | |
| CN205507043U (en) | Battery special test line | |
| CN108594133A (en) | A kind of lithium battery pressure differential detection circuit | |
| CN201270275Y (en) | Bridging device suitable for replacing lagging accumulator | |
| CN203481330U (en) | Safety device of lithium battery pack | |
| CN214201643U (en) | Wire harness detector | |
| CN201876529U (en) | Battery performance testing device | |
| CN202362434U (en) | Plug-in type voltage and current signal detecting device for storage battery driven vehicles | |
| CN214201728U (en) | Multi-line beam synchronous detector | |
| CN220626630U (en) | Gauge for detecting plugging sequence of wire harness | |
| CN207007881U (en) | A kind of plug-in technique module performance detects fixture | |
| CN111060843A (en) | Device and method for detecting leakage current of slave board of battery management system | |
| CN211478581U (en) | Battery pack polarity detection system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200403 Termination date: 20210318 |