CN207965073U - A kind of high tension loop detection circuit - Google Patents
A kind of high tension loop detection circuit Download PDFInfo
- Publication number
- CN207965073U CN207965073U CN201820127624.3U CN201820127624U CN207965073U CN 207965073 U CN207965073 U CN 207965073U CN 201820127624 U CN201820127624 U CN 201820127624U CN 207965073 U CN207965073 U CN 207965073U
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- CN
- China
- Prior art keywords
- pins
- resistance
- optocoupler
- light emitting
- connection
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Abstract
The utility model discloses a kind of high tension loop detection circuits,Including the positive relay switch S1 of master,DC/DC power supplys,Resistance R1 and+5V power pins,1 pin of the lower end connection optocoupler of resistance R1,The anode of the 2 pins connection diode D3 of optocoupler,The upper end of the cathode connection resistance R2 of diode D3,Resistance R2 connection light emitting diodes D1,The right end of the main positive relay switch S1 of light emitting diode D1 connections,The lower end of the 4 pins connection resistance R3 of optocoupler,The upper end of resistance is separately connected 2 pins and+12V power pins of DC/DC power supplys,3 pins of optocoupler are separately connected upper end and the MCU of resistance R4,The anode of the lower end connection light emitting diode D2 of resistance R4,The cathode of light emitting diode D2 and 1 pin of DC/DC power supplys connect DGND pins.The beneficial effects of the utility model：By may determine that whether main positive relay is closed to the acquisition of output voltage values, to the detection to high tension loop, and then master controller BMS is coordinated to realize the detection to the positive relay status of high tension loop master.
Description
Technical field
The utility model is related to detection circuit technical fields, it particularly relates to a kind of high tension loop detection circuit.
Background technology
The safe operation of pure electric automobile transmission system is related to the safety of driver, it is therefore desirable to be to transmission of electricity periodically
The power equipments such as system carry out examination and maintenance.Traditional measurement circuit design is complicated, is carried out to power equipments such as transmission systems
Detection is excessively cumbersome when inspection, and inefficiency, while traditional detection circuit manufacturing cost is high, has been unable to meet market
Demand.
Utility model content
For above-mentioned technical problem in the related technology, the utility model proposes a kind of high tension loop detection circuits, can
Overcome the above-mentioned deficiency of the prior art.
To realize the above-mentioned technical purpose, the technical solution of the utility model is realized in：
A kind of high tension loop detection circuit, including the positive relay switch S1 of master, the left end of the positive relay switch S1 of master
3 pins of DC/DC power supplys are connected, 4 pins of the DC/DC power supplys are separately connected upper end and the+5V power pins of resistance R1, institute
State 1 pin of the lower end connection optocoupler of resistance R1, the anode of the 2 pins connection diode D3 of the optocoupler, the diode D3
Cathode connection resistance R2 upper end, the anode of the lower end connection light emitting diode D1 of the resistance R2, the light emitting diode
The right end of the main positive relay switch S1 of cathode connection of D1, the lower end of the 4 pins connection resistance R3 of the optocoupler, the resistance
Upper end is separately connected 2 pins and+12V power pins of DC/DC power supplys, and 3 pins of the optocoupler are separately connected the upper of resistance R4
The anode at end and the lower end of MCU, the resistance R4 connection light emitting diode D2, the cathode and DC/DC of the light emitting diode D2
1 pin of power supply connects DGND pins.
Further, the light emitting diode D1 is LED light emitting diodes.
Further, the light emitting diode D2 is LED light emitting diodes.
Further, 1 pin of the optocoupler is anode, and 2 pins of optocoupler are cathode, and 3 pins of optocoupler are emitter,
4 pins of optocoupler are collector.
Preferably, the model PS2703 of the optocoupler.
The beneficial effects of the utility model：The utility model by the acquisition of output voltage values may determine that it is main just after
Whether electric appliance is closed, and to the detection to high tension loop, and then master controller BMS is coordinated to realize to the positive relay of high tension loop master
The detection of state；The utility model has design simply, the low advantage of manufacturing cost, while working efficiency carries significantly when in use
It is high.
Description of the drawings
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Needed in attached drawing be briefly described, it should be apparent that, the accompanying drawings in the following description is only the utility model
Some embodiments for those of ordinary skill in the art without creative efforts, can also be according to this
A little attached drawings obtain other attached drawings.
Fig. 1 is a kind of circuit diagram of high tension loop detection circuit according to the utility model embodiment；
In figure：
1, DC/DC power supplys；2, optocoupler.
Specific implementation mode
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, the every other embodiment that those of ordinary skill in the art are obtained all belongs to
In the range of the utility model protection.
As shown in Figure 1, a kind of high tension loop detection circuit according to the utility model embodiment, including the positive relay of master
3 pins of the left end connection DC/DC power supplys 1 of device switch S1, the positive relay switch S1 of master, the 4 of the DC/DC power supplys 1 draws
Foot is separately connected upper end and the+5V power pins of resistance R1,1 pin of the lower end connection optocoupler 2 of the resistance R1, the optocoupler
The anode of 22 pins connection diode D3, the upper end of the cathode connection resistance R2 of the diode D3, under the resistance R2
The anode of end connection light emitting diode D1, the right end of the main positive relay switch S1 of cathode connection of the light emitting diode D1, institute
The lower end of the 4 pins connection resistance R3 of optocoupler 2 is stated, the upper end of the resistance is separately connected 2 pins and+12V of DC/DC power supplys 1
3 pins of power pins, the optocoupler 2 are separately connected upper end and the MCU of resistance R4, the lower end connection luminous two of the resistance R4
The anode of pole pipe D2, the cathode of the light emitting diode D2 and 1 pin of DC/DC power supplys 1 connect DGND pins.
In one embodiment, the light emitting diode D1 is LED light emitting diodes.
In one embodiment, the light emitting diode D2 is LED light emitting diodes.
In one embodiment, 1 pin of the optocoupler 2 is anode, and 2 pins of optocoupler 2 are cathode, and the 3 of optocoupler 2 draws
Foot is emitter, and 4 pins of optocoupler 2 are collector.
In one embodiment, the model PS2703 of the optocoupler 2.
In order to facilitate the above-mentioned technical proposal of the utility model is understood, below by way of new to this practicality in specifically used mode
The above-mentioned technical proposal of type is described in detail.
When specifically used, the utility model exports low-voltage signal, MCU by controlling optocoupler output（Microcontroller）End inspection
I/O signals are measured, by further analyzing the I/O signals detected, to judge the current state in high voltage control circuit.
Specifically, main positive relay switch S1 is closed, optocoupler control circuit 5V control terminals are closed back with the formation of DC/DC power supplys
Road U1, R1, U2, D3, R2, D1, S1, at this time optocoupler control circuit circuit of output terminal connect, and then be formed into a loop R3, U2, R4,
D2, at this time the ends MCU can detect an I/O signal, then MCU is by judging at this time the acquisition of I/O signal voltage values
Main positive relay state in which.
In conclusion the utility model to the acquisition of output voltage values by may determine that whether main positive relay closes
It closes, to the detection to high tension loop, and then master controller BMS is coordinated to realize the inspection to the positive relay status of high tension loop master
It surveys；The utility model has design simply, the low advantage of manufacturing cost, while working efficiency greatly improves when in use.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this
Within the spirit and principle of utility model, any modification, equivalent replacement, improvement and so on should be included in the utility model
Protection domain within.
Claims (5)
1. a kind of high tension loop detection circuit, which is characterized in that including the positive relay switch S1 of master, the positive relay switch of master
The left end of S1 connects DC/DC power supplys（1）3 pins, the DC/DC power supplys（1）4 pins be separately connected resistance R1 upper end and
The lower end of+5V power pins, the resistance R1 connects optocoupler（2）1 pin, the optocoupler（2）2 pins connection diode D3
Anode, the upper end of the cathode connection resistance R2 of the diode D3, the lower end connection light emitting diode D1's of the resistance R2
Anode, the right end of the main positive relay switch S1 of cathode connection of the light emitting diode D1, the optocoupler（2）4 pins connection
The upper end of the lower end of resistance R3, the resistance is separately connected DC/DC power supplys（1）2 pins and+12V power pins, the optocoupler
（2）3 pins be separately connected upper end and the MCU of resistance R4, the anode of the lower end connection light emitting diode D2 of the resistance R4, institute
State the cathode and DC/DC power supplys of light emitting diode D2（1）1 pin connect DGND pins.
2. a kind of high tension loop detection circuit according to claim 1, which is characterized in that the light emitting diode D1 is
LED light emitting diodes.
3. a kind of high tension loop detection circuit according to claim 1, which is characterized in that the light emitting diode D2 is
LED light emitting diodes.
4. a kind of high tension loop detection circuit according to claim 1, which is characterized in that the optocoupler（2）1 pin be
Anode, optocoupler（2）2 pins be cathode, optocoupler（2）3 pins be emitter, optocoupler（2）4 pins be collector.
5. a kind of high tension loop detection circuit according to claim 4, which is characterized in that the optocoupler（2）Model
PS2703。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820127624.3U CN207965073U (en) | 2018-01-25 | 2018-01-25 | A kind of high tension loop detection circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820127624.3U CN207965073U (en) | 2018-01-25 | 2018-01-25 | A kind of high tension loop detection circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207965073U true CN207965073U (en) | 2018-10-12 |
Family
ID=63735011
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820127624.3U Expired - Fee Related CN207965073U (en) | 2018-01-25 | 2018-01-25 | A kind of high tension loop detection circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207965073U (en) |
-
2018
- 2018-01-25 CN CN201820127624.3U patent/CN207965073U/en not_active Expired - Fee Related
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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: 20181012 Termination date: 20210125 |