CN202481015U - Power supply control circuit for electronic control unit - Google Patents
Power supply control circuit for electronic control unit Download PDFInfo
- Publication number
- CN202481015U CN202481015U CN 201120509719 CN201120509719U CN202481015U CN 202481015 U CN202481015 U CN 202481015U CN 201120509719 CN201120509719 CN 201120509719 CN 201120509719 U CN201120509719 U CN 201120509719U CN 202481015 U CN202481015 U CN 202481015U
- Authority
- CN
- China
- Prior art keywords
- power
- modular converter
- signal
- aerotron
- control circuit
- 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
Landscapes
- Safety Devices In Control Systems (AREA)
Abstract
The utility model discloses a power supply control circuit for an electronic control unit, comprising a first driving level conversion module converting an igniting switch signal of an automobile to a power supply driving signal; a power supply control module starting power supply to work according to the power supply driving signal provided by the first driving level conversion module; a one-chip microcomputer, according to a switch signal provided by a sign level conversion module, and when determining the automobile is in a flame-out state, sending an electricity continuing instruction, completing operation of data storage and system reset, and then sending a control instruction making a power supply control module turn off the power supply; and a second driving level conversion module, according to the electricity continuing instruction provided by the one-chip microcomputer, outputting a low level signal making the power supply control module continue to start to work in flame-out. The power supply control circuit can complete function of delay of power failure when a driver switches off the motor, when the one-chip microcomputer completes operation of data storage and system reset, the one-chip microcomputer itself controls power failure.
Description
Technical field
The utility model relates to the vehicle electronic control unit field, particularly a kind of power control circuit of electronic control unit.
Background technology
Along with the development of automotive electronic technology, the ECU on the automobile (ElectronicControl Unit, electronic control unit) is more and more, like electric control fuel oil jet system, anti-skid brake system, antiskid control system etc.These electronic control units go for better Control of Automobile, the data in the time of can storing some running cars, and these data generally have very strong real-time.Common and the shared power supply of car load of present electronic control unit, after chaufeur was flame-out, energy supply control module also can cut off the power supply immediately, and some important data possibly can not get preserving like this; On the other hand, the electronic control unit sudden power can't guarantee that the car load driving system can be in the position of a safety after parking, just has potential safety hazard during so next vehicle launch.
Summary of the invention
To above-mentioned technical matters; The utility model provides a kind of power control circuit of simple, actv. electronic control unit; The utility model can be accomplished the function of time-delay power down after chaufeur is flame-out; After treating that micro controller system is accomplished operations such as data storage, system reset, control power down voluntarily by micro controller system.
The technical scheme that realizes above-mentioned purpose is following:
The power control circuit of electronic control unit comprises the marker level modular converter, converts the ignition lock signal of automobile to on-off signal output; And
The first drive level modular converter converts the ignition lock signal of automobile to power driving signal; And
Energy supply control module, the power driving signal that provides according to the first drive level modular converter starts power work; And
Micro controller system; The on-off signal that provides according to the marker level modular converter; Judge when automobile is in flameout state, after then micro controller system sends continuous electricity instruction and accomplishes the operation of data storage, system reset, send the control command that makes the energy supply control module power cut-off again; And
The second drive level modular converter, according to the continuous electricity instruction that micro controller system provides, output makes energy supply control module when flame-out, continue to start the low level signal of energy supply control module work.
Adopted such scheme, after the chaufeur igniting, power control circuit can receive ignition signal, and this signal driving power control energy supply control module conducting lets whole power control circuit work together.After the power control circuit normal operation, can real-time monitor the state of ignition lock signal.In case chaufeur is flame-out, the micro controller system in the power control circuit will be taken over the management of energy supply control module, to guarantee still to make the energy supply control module normal operation after flame-out.After micro controller system was accomplished necessary operation such as data storage, system reset, operating power control module power cut-off was preserved significant data so again, after parking, can be in the position of a safety to guarantee the car load driving system, had eliminated potential safety hazard.
Below in conjunction with the accompanying drawing and the specific embodiment the utility model is described further.
Description of drawings
Fig. 1 is the circuit block diagram of the utility model;
Fig. 2 is the schematic circuit diagram of Fig. 1;
Fig. 3 is the diagram of circuit of the utility model.
The specific embodiment
With reference to Fig. 1; The power control circuit of the electronic control unit of the utility model, by surge voltage stabilizing processing module, the first drive level modular converter; The marker level modular converter; Energy supply control module, the micro controller system and the second drive level modular converter are formed, and are elaborated in the face of the relation between every part and the each several part down:
See figures.1.and.2; Carry out surge after surge voltage stabilizing processing module weakens the unrestrained energize power-handling capability in the ignition lock signal again and suppress, the output signal of surge voltage stabilizing processing module outputs to the marker level modular converter and the first drive level modular converter respectively.The ignition lock signal is at first handled by surge voltage stabilizing processing module; Surge voltage stabilizing processing module comprises first resistance R 1, second resistance R 2, the 3rd resistance R 3, first capacitor C 1 and zener diode D1; First resistance R 1 is parallelly connected with second resistance R 2; With the 3rd resistance R 3 and first capacitor C, 1 parallelly connected back, one end ground connection, the other end connects the parallel connected end of first resistance R 1 and second resistance R 2, and zener diode D1 is connected in parallel on the two ends of first capacitor C 1.
The first drive level modular converter converts the ignition lock signal of automobile to power driving signal.The first drive level modular converter comprises the first aerotron Q1, and the drive signal of this first aerotron Q1 output is low level output signal.The base stage of the first aerotron Q1 connects the cathode terminal of zener diode D1; The emission ground connection of the first aerotron Q1; The collecting electrode of the first aerotron Q1 also connects one second diode D2; The cathode terminal of this second diode D2 is connected with the collecting electrode of first aerotron, and the anode tap of the second diode D2 connects power supply.The model of the second diode D2 is MRA4007T3, and the second diode D2 has unidirectional conduction, guarantees the switching valve Q4 that invalid high level signal can not output to energy supply control module that enables of first aerotron Q1 output, and promptly low level is effective.
The marker level modular converter converts the ignition lock signal of automobile to on-off signal output.The marker level modular converter is the 3rd aerotron Q3, and the base stage of the 3rd aerotron Q3 connects the cathode terminal of zener diode D1, the grounded emitter of the 3rd aerotron Q3, and the collecting electrode of the 3rd aerotron Q3 connects power supply through biasing resistor R4.The mouth of the 3rd aerotron Q3 is gathered port with the IO of micro controller system and is connected; Output to micro controller system after the signal conversion of marker level modular converter with the ignition lock signal; Supply micro controller system to judge whether the signal of ignition lock output is effective, judges that promptly the ignition lock current state is fired state or flameout state.
Energy supply control module starts power work according to the power driving signal that the first drive level modular converter provides.Energy supply control module comprise switching valve Q4 and with this switching valve bonded assembly constant voltage power suspply U1.Switching valve Q4 is the PMOS pipe, and constant voltage power suspply U1 is the three-terminal voltage-stabilizing power supply.Under fired state, energy supply control module is according to starting power work, and when flame-out, after micro controller system was accomplished the operation of data storage, system reset, energy supply control module received the instruction control power cutoff of micro controller system again.
Micro controller system is judged when automobile is in flameout state according to the on-off signal that provides of marker level modular converter, after then micro controller system sends continuous electricity instruction and accomplishes the operation of data storage, system reset, sends the control command that makes the energy supply control module power cut-off again.
The continuous electricity instruction that the second drive level modular converter provides according to micro controller system; Output makes energy supply control module when flame-out, continue to start the low level signal of energy supply control module work; After micro controller system sends continuous electricity instruction and accomplishes the operation of data storage, system reset; Micro controller system no longer sends continuous electricity instruction, and then the second drive level modular converter is no longer worked.Micro controller system no longer sends when continuing the electricity instruction, sends cut-offing instruction to energy supply control module, by the connection of energy supply control module power cut-off.The second drive level modular converter comprises pull down resistor R6, current-limiting resistance R7, the second aerotron Q2 and the 3rd diode D3; Pull down resistor R6 is connected with the end of current-limiting resistance R7; The other end ground connection of pull down resistor; Reach the purpose of current limliting through current-limiting resistance R7, be used for the influence of inference elimination signal through pull down resistor R6.The other end of current-limiting resistance R7 connects the base stage of second aerotron, the emission collection ground connection of the second aerotron Q2, and the collecting electrode of second aerotron connects the negative electrode of the 3rd diode D3, and the anode of the 3rd diode connects energy supply control module.
With reference to Fig. 3; The power control method of the electronic control unit of the utility model: when the ignition lock igniting; The first drive level modular converter can receive actv. ignition lock signal; Then the first drive level modular converter output low level is to energy supply control module, and energy supply control module starts power work; Whether simultaneously, micro controller system is monitored the ignition lock signal that the marker level modular converter provides constantly, effective to judge the igniting on-off signal, if judged result is for being that then energy supply control module continues to make power work; If judged result is for denying; Then ignition lock has been in flameout state; Micro controller system sends continuous electricity instruction, the continuous electricity instruction that the second drive level modular converter provides according to micro controller system, and output makes energy supply control module when flame-out, continue to start the low level signal of power work; After supplying micro controller system to accomplish the operation of data storage, system reset, micro controller system sends the control command of energy supply control module power cut-off is connected with power cut-off.
The working process of the utility model is following:
The ignition lock signal at first will be handled through the resistance-capacitance network that first resistance R 1, second resistance R 2, the 3rd resistance R 3 and first capacitor C 1 are formed, to guarantee to occur at ignition lock the safety of the situation circuit of surge.When surge voltage appearred in ignition lock, above-mentioned resistance-capacitance network can slacken the power-handling capability of surge voltage, handled through zener diode D1 then and realized that surge suppresses.Signal after treatment drives the first aerotron Q1 and the 3rd aerotron Q3 simultaneously; Wherein the output signal of the first aerotron Q1 is used for the power-on control module; Because the second diode D2 has unidirectional conduction; Guarantee to enable invalid high level signal and can not output to switching valve Q4, therefore, the signal of first aerotron Q1 output is that low level is effective.The IO that the output signal of the 3rd aerotron Q3 feeds back to micro controller system gathers port, with the state of monitoring ignition lock, promptly is to be in fired state or flameout state.In case it is invalid that micro controller system detects ignition lock; Just can send continuous electricity through IO control mouth and instruct, this continuous electric instruction control second aerotron Q2 opens, and can export an actv. low level after the second aerotron Q2 opens to switching valve Q4; Guarantee can not cut off the power supply; During continuous electricity, micro controller system can be accomplished the operation of data storage, system reset, guarantees that the car load driving system can be in the position of a safety after parking.Accomplish the operation of data storage, system reset when micro controller system after, no longer send when continuing the electricity instruction, send the control command that makes the energy supply control module power cut-off through the IO port.
Claims (9)
1. the power control circuit of an electronic control unit is characterized in that, comprises the marker level modular converter, converts the ignition lock signal of automobile to on-off signal output; And
The first drive level modular converter converts the ignition lock signal of automobile to power driving signal; And
Energy supply control module, the power driving signal that provides according to the first drive level modular converter starts power work; And
Micro controller system; The on-off signal that provides according to the marker level modular converter; Judge when automobile is in flameout state, after then micro controller system sends continuous electricity instruction and accomplishes the operation of data storage, system reset, send the control command that makes the energy supply control module power cut-off again; And
The second drive level modular converter, according to the continuous electricity instruction that micro controller system provides, output makes energy supply control module when flame-out, continue to start the low level signal of energy supply control module work.
2. according to the power control circuit of the said electronic control unit of claim 1; It is characterized in that; Said power control circuit also comprises a surge voltage stabilizing processing module; Carry out surge after surge voltage stabilizing processing module weakens the unrestrained energize power-handling capability in the ignition lock signal again and suppress, the output signal of surge voltage stabilizing processing module outputs to the marker level modular converter and the first drive level modular converter respectively.
3. according to the power control circuit of the said electronic control unit of claim 2; It is characterized in that; Surge voltage stabilizing processing module comprises first resistance (R1), second resistance (R2), the 3rd resistance (R3), first electric capacity (C1) and zener diode (D1); First resistance (R1) is parallelly connected with second resistance (R2); With the parallelly connected back with first electric capacity (C1) of the 3rd resistance (R3) one end ground connection, the other end connects the parallel connected end of first resistance (R1) and second resistance (R2), and zener diode (D1) is connected in parallel on the two ends of first electric capacity (C1).
4. according to the power control circuit of any said electronic control unit of claim 1 to 3, it is characterized in that said marker level modular converter is the 3rd aerotron.
5. according to the power control circuit of any said electronic control unit of claim 1 to 3, it is characterized in that the said first drive level modular converter comprises first aerotron, the drive signal of this first aerotron output is low level output signal.
6. according to the power control circuit of the said electronic control unit of claim 5; It is characterized in that; Collecting electrode at first aerotron also connects one second diode (D2); The cathode terminal of this second diode (D2) is connected with the collecting electrode of first aerotron, and the anode tap of second diode (D2) connects power supply.
7. according to the power control circuit of any said electronic control unit of claim 1 to 3, it is characterized in that, said energy supply control module comprise switching valve and with this switching valve bonded assembly constant voltage power suspply.
8. according to the power control circuit of the said electronic control unit of claim 1; It is characterized in that; The second drive level modular converter comprises pull down resistor (R6), current-limiting resistance (R7), second aerotron (Q2), and pull down resistor (R6) is connected with an end of current-limiting resistance (R7), the other end ground connection of pull down resistor; The other end of current-limiting resistance connects the base stage of second aerotron, the emission collection ground connection of second aerotron (Q2).
9. the power control circuit of said electronic control unit according to Claim 8; It is characterized in that; The second drive level modular converter also comprises one the 3rd diode (D3); The collecting electrode of second aerotron connects the negative electrode of the 3rd diode (D3), and the anode of the 3rd diode connects energy supply control module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120509719 CN202481015U (en) | 2011-12-09 | 2011-12-09 | Power supply control circuit for electronic control unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120509719 CN202481015U (en) | 2011-12-09 | 2011-12-09 | Power supply control circuit for electronic control unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202481015U true CN202481015U (en) | 2012-10-10 |
Family
ID=46955469
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201120509719 Expired - Fee Related CN202481015U (en) | 2011-12-09 | 2011-12-09 | Power supply control circuit for electronic control unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202481015U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110920392A (en) * | 2019-11-19 | 2020-03-27 | 珠海格力电器股份有限公司 | Power supply control circuit, power supply control method and new energy automobile |
-
2011
- 2011-12-09 CN CN 201120509719 patent/CN202481015U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110920392A (en) * | 2019-11-19 | 2020-03-27 | 珠海格力电器股份有限公司 | Power supply control circuit, power supply control method and new energy automobile |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102490670A (en) | Power supply control circuit and method for electronic control unit | |
| CN103208780B (en) | A kind of DC motor control circuit with heat protection function | |
| CN107042760B (en) | Electric automobile high-voltage interlocking system and fault positioning method thereof | |
| CN104228587B (en) | Intelligent electric power allocation unit | |
| CN103560716A (en) | Auxiliary fuel pump electric control system and method for achieving soft starting of system | |
| CN201559546U (en) | Super-capacitor discharge device for hybrid electric vehicle | |
| CN202481015U (en) | Power supply control circuit for electronic control unit | |
| CN105162196A (en) | Transistor based charge control guide circuit of electric vehicle | |
| CN202818205U (en) | Series-excited brush direct-current motor controller | |
| CN208813179U (en) | A kind of electric vacuum pump control circuit of electric car | |
| CN201694187U (en) | Controller capable of automatically detecting failure | |
| CN203326565U (en) | Direct current motor control circuit with heat protection function | |
| CN203734568U (en) | Auxiliary fuel pump electric control system | |
| CN2851005Y (en) | High low voltage power controller of mixing power electric vehicle | |
| CN201656439U (en) | Generator failure protection circuit of regulator and voltage regulator thereof | |
| CN105337596A (en) | Motor system IGBT switching circuit thereof | |
| CN208469767U (en) | A kind of control system of parking braking | |
| CN108791118B (en) | Starting system based on fuel engine and automobile | |
| CN102751927A (en) | Series excitation brush direct current motor controller | |
| CN203747458U (en) | Engineering machinery storage battery power management device | |
| CN208518806U (en) | A kind of engine starting protection device | |
| CN109606344B (en) | Brake fault detection alarm and processing system of electromagnetic brake of pull type caravan and control method thereof | |
| CN108177615B (en) | Energy management system based on super capacitor | |
| CN212410712U (en) | ACC detection and power control circuit | |
| CN110014860B (en) | Vehicle super capacitor discharging method and control system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| 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: 20121010 Termination date: 20171209 |