CN209248288U - Flash driving circuit for the diagnosis of new energy vehicle controller power adjustable band - Google Patents
Flash driving circuit for the diagnosis of new energy vehicle controller power adjustable band Download PDFInfo
- Publication number
- CN209248288U CN209248288U CN201822192837.7U CN201822192837U CN209248288U CN 209248288 U CN209248288 U CN 209248288U CN 201822192837 U CN201822192837 U CN 201822192837U CN 209248288 U CN209248288 U CN 209248288U
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- Prior art keywords
- switching tube
- flash
- power supply
- driving circuit
- diagnosis
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Abstract
The utility model belongs to technical field of new energy, is related to a kind of flash driving circuit of new-energy automobile, and in particular to the flash driving circuit for the diagnosis of new energy vehicle controller power adjustable band.The utility model builds changeable power conditioning circuitry using switching tube Q1 and switching tube Q2, wherein single-chip microcomputer output drives by switching tube Q2 and switching tube Q1 is connected, to realize the power requirement adjust automatically own load power according to controlled device, the utility model device simplifies, compact, it is easily installed on circuit board, and directly controlled using single-chip microcontroller, control method simple and stable is good, the brief cost of controller and controller can be made more to minimize.
Description
Technical field
The utility model belongs to technical field of new energy, is related to a kind of flash driving circuit of new-energy automobile, tool
Body is related to a kind of flash driving circuit for the diagnosis of new energy vehicle controller power adjustable band.
Background technique
With the development of automotive electronic technology, electronic device is more and more on automobile, the quantity of controlled device on automobile
It is more and more and need the driving power of controller different, cause integrated chip single on entire car controller to be unable to satisfy
Control requirement to various controlled devices, had not only increased the cost of entire controller using a plurality of types of integrated chips but also had increased
The control difficulty of single-chip microcontroller reduces the reliability of entire controller.Although the driving circuit letter that common separating component is built
Single practical cannot but diagnose to the state of controlled device can bring many hidden danger.
Utility model content
In order to solve above-mentioned problems of the prior art, the utility model is provided for new energy the utility model
The flash driving circuit of automobile controller power adjustable band diagnosis should when controlled device multiplicity and different demand power
Circuit can be very good the power demand of adaptation controlled device.
The specific technical solution that the utility model uses is:
For the flash driving circuit of new energy vehicle controller power adjustable band diagnosis, including single-chip microcontroller, switching tube Q1
And switching tube Q2, the switching tube Q1 are connected between flash power supply and flash output end, the switching tube Q1 and flash
Power supply VCC power supply circuit is also connected between output end, the controlled end of the switching tube Q1 is grounded by switching tube Q2, described
Switching tube Q2 controlled end and single-chip microcontroller output end connect.
The flash driving circuit further includes diagnostic monitoring circuit, and the diagnostic monitoring circuit includes ESD protection two
Pole pipe D1 and sampling bleeder circuit, ESD protection diode D1 are connected between power supply VCC and ground, the sampling bleeder circuit
Connect to be formed with resistance R5 by resistance R4, the resistance R4 and resistance R5 concatenate point and ESD protection diode D1 is controlled
End connection, the concatenation point are also connect with the input terminal of single-chip microcontroller.
The switching tube Q1 is p-type mos pipe, and the switching tube Q2 is NPN type triode, the D of the switch Q1
Pole is connect with flash power supply, and the pole S is connect with flash output end, and the pole controlled end G is connect with the collector of switching tube Q2, institute
The base stage of the switching tube Q2 stated is connect with single-chip microcomputer output, emitter ground connection.
The resistance R4 is grounded with the point that concatenates of resistance R5 by capacitor C2.
The tie point of the flash power supply and switching tube Q1 is grounded by capacitor C1.
The power supply VCC power supply circuit include power supply VCC and with the concatenated resistance R3 of power supply VCC and counnter attack diode
D2。
The controlled end of the switching tube Q2 is grounded by resistance R2.
The beneficial effects of the utility model are:
The utility model builds changeable power conditioning circuitry using switching tube Q1 and switching tube Q2, and wherein single-chip microcontroller is defeated
Outlet drives by switching tube Q2 and is connected switching tube Q1, thus can realize according to the power requirement adjust automatically of controlled device from
Body bearing power, the utility model device simplifies, compact, is easily installed on circuit board, and direct using single-chip microcontroller
Control, control method simple and stable is good, the brief cost of controller and controller can be made more to minimize.
Detailed description of the invention
Fig. 1 is the circuit diagram of the utility model.
Specific embodiment
With reference to the accompanying drawing and specific embodiment the utility model is described in further detail:
Specific embodiment 1, as shown in Figure 1, the utility model is to diagnose for new energy vehicle controller power adjustable band
Flash driving circuit, including single-chip microcontroller, switching tube Q1 and switching tube Q2, the switching tube Q1 be connected on flash power supply and height
Between the output end of side, power supply VCC power supply circuit, the switch are also connected between the switching tube Q1 and flash output end
The controlled end of pipe Q1 is grounded by switching tube Q2, and the controlled end of the switching tube Q2 and the output end of single-chip microcontroller connect.
Further, the switching tube Q1 is p-type mos pipe, and the switching tube Q2 is NPN type triode, described
The pole D of switch Q1 is connect with flash power supply, and the pole S is connect with flash output end, the current collection of the pole controlled end G and switching tube Q2
Pole connection, the base stage of the switching tube Q2 are connect with single-chip microcomputer output, emitter ground connection.
The working principle of the utility model is the turn-on and turn-off of single-chip microcontroller control switch pipe Q2, when switching tube Q2 is connected
When, the controlled end ground connection of switching tube Q1, switching tube Q1 conducting, flash power supply is connected to flash output end at this time.
When switching tube Q2 shutdown, the controlled end of switching tube Q1 is hanging, switching tube Q1 shutdown, controlled device and flash power supply
Cutting.Reach and receive single-chip microcontroller control on-off between switching tube Q1, so that providing power supply to controlled device reaches the mesh that flash drives
's.
The circuit that separating component is built has very high freedom degree, can select most to close according to the power demand of controlled device
Suitable switching tube Q1 is to reach the optional purpose of power.
Specific embodiment 2, the flash driving circuit further include diagnostic monitoring circuit, the diagnostic monitoring circuit packet
It includes ESD protection diode D1 and sampling bleeder circuit, ESD protection diode D1 is connected between power supply VCC and ground, described takes
Sample bleeder circuit connects to be formed with resistance R5 by resistance R4, and the resistance R4 concatenates point and ESD protection two with resistance R5's
The connection of pole pipe D1 controlled end, the concatenation point are also connect with the input terminal of single-chip microcontroller.
Single-chip microcontroller acquires the voltage value of the controlled end of ESD protection diode D1,
Under controlled device normal condition, R4, R5 of bleeder circuit divide 12V, and single-chip microcontroller collects accordingly
Voltage value thinks that controlled device is normal；
Under controlled device off state, R4, R5 of resistance R3 and bleeder circuit divide 5V, and single-chip microcontroller collects accordingly
Voltage value think controlled device open circuit；
When controlled device shorted to earth, the collected voltage of single-chip microcontroller thinks controlled device shorted to earth for 0.
Therefore the circuit can collect the controlled end of acquisition ESD protection diode D1 both 3 in Fig. 1 by analyzing single-chip microcontroller
The voltage of foot diagnoses the state of controlled device to achieve the purpose that diagnosis.Wherein each signal all have passed through filtering, antistatic,
The processing of Anti-surging.
Further, the resistance R4 is grounded with the point that concatenates of resistance R5 by capacitor C2.It is played by capacitor C2
Filter action.
Further, the tie point of the flash power supply and switching tube Q1 are grounded by capacitor C1, are risen by capacitor C1
To filter action.
Further, the power supply VCC power supply circuit include power supply VCC and with the concatenated resistance R3 of power supply VCC and anti-
Anti- diode D2.Flash power supply (+12V) reverse impact power supply VCC (+5V), protection power source VCC are prevented by counnter attack diode D2
And the safety of flash power supply.
Further, the controlled end of the switching tube Q2 is grounded by resistance R2.When single-chip microcontroller is exported without level, borrow
It helps resistance R2 to play the role of pull down resistor, guarantees that switching tube Q2 is in an off state, avoid malfunction.
Claims (7)
1. for new energy vehicle controller power adjustable band diagnosis flash driving circuit, it is characterised in that: including single-chip microcontroller,
Switching tube Q1 and switching tube Q2, the switching tube Q1 are connected between flash power supply and flash output end, the switching tube
Power supply VCC power supply circuit is also connected between Q1 and flash output end, the controlled end of the switching tube Q1 is by switching tube Q2
Ground connection, the controlled end of the switching tube Q2 and the output end of single-chip microcontroller connect.
2. the flash driving circuit according to claim 1 for the diagnosis of new energy vehicle controller power adjustable band,
Be characterized in that: the flash driving circuit further includes diagnostic monitoring circuit, and the diagnostic monitoring circuit includes ESD protection two
Pole pipe D1 and sampling bleeder circuit, ESD protection diode D1 are connected between power supply VCC and ground, the sampling bleeder circuit
Connect to be formed with resistance R5 by resistance R4, the resistance R4 and resistance R5 concatenate point and ESD protection diode D1 is controlled
End connection, the concatenation point are also connect with the input terminal of single-chip microcontroller.
3. the flash driving circuit according to claim 1 for the diagnosis of new energy vehicle controller power adjustable band,
Be characterized in that: the switching tube Q1 is p-type mos pipe, and the switching tube Q2 is NPN type triode, the D of the switch Q1
Pole is connect with flash power supply, and the pole S is connect with flash output end, and the pole controlled end G is connect with the collector of switching tube Q2, institute
The base stage of the switching tube Q2 stated is connect with single-chip microcomputer output, emitter ground connection.
4. the flash driving circuit according to claim 2 for the diagnosis of new energy vehicle controller power adjustable band,
Be characterized in that: the resistance R4 is grounded with the point that concatenates of resistance R5 by capacitor C2.
5. the flash driving circuit according to claim 1 for the diagnosis of new energy vehicle controller power adjustable band,
Be characterized in that: the tie point of the flash power supply and switching tube Q1 is grounded by capacitor C1.
6. the flash driving circuit according to claim 1 for the diagnosis of new energy vehicle controller power adjustable band,
Be characterized in that: the power supply VCC power supply circuit include power supply VCC and with the concatenated resistance R3 of power supply VCC and counnter attack diode
D2。
7. the flash driving circuit according to claim 1 for the diagnosis of new energy vehicle controller power adjustable band,
Be characterized in that: the controlled end of the switching tube Q2 is grounded by resistance R2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822192837.7U CN209248288U (en) | 2018-12-25 | 2018-12-25 | Flash driving circuit for the diagnosis of new energy vehicle controller power adjustable band |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822192837.7U CN209248288U (en) | 2018-12-25 | 2018-12-25 | Flash driving circuit for the diagnosis of new energy vehicle controller power adjustable band |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209248288U true CN209248288U (en) | 2019-08-13 |
Family
ID=67534669
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822192837.7U Active CN209248288U (en) | 2018-12-25 | 2018-12-25 | Flash driving circuit for the diagnosis of new energy vehicle controller power adjustable band |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209248288U (en) |
-
2018
- 2018-12-25 CN CN201822192837.7U patent/CN209248288U/en active Active
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| GR01 | Patent grant |