CN101576736B - Power supply circuit of automobile electronic controller - Google Patents
Power supply circuit of automobile electronic controller Download PDFInfo
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- CN101576736B CN101576736B CN2008100433290A CN200810043329A CN101576736B CN 101576736 B CN101576736 B CN 101576736B CN 2008100433290 A CN2008100433290 A CN 2008100433290A CN 200810043329 A CN200810043329 A CN 200810043329A CN 101576736 B CN101576736 B CN 101576736B
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- relay
- electronic controller
- power supply
- way relay
- way
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Abstract
The invention discloses a power supply circuit of an automobile electronic controller which comprises constant power, an ignition switch and two double-way relays. One end of the ignition switch is connected with a positive electrode of the constant power, the other end is connected with the input ends of excitation coils of a double-way relay 1 and a double-way relay 2, the input end of a controlled switch of the double-way relay 1 is connected with the positive electrode of the constant power, the output ends of the excitation coils of the double-way relay 1 and the double-way relay 2 are grounded, the output end of the controlled switch of the double-way relay 1 is connected with the input end of the controlled switch of the double-way relay 2, and the output end of the controlled switch of the double-way relay 2 supplies the power to the automobile electronic controller through a voltage regulator diode. When the ignition switch is disconnected, the electronic controller runs normally; and when the ignition switch closes, the electronic controller is in an off-electricity state.
Description
Technical field
The present invention relates to a kind of feed circuit, particularly design a kind of circuit to the automobile electronic controller power supply.
Background technology
ECU on the automobile (Electronic Control Unit, electronic controller) adopts accumulator/normal power supply usually, and this positive source is KL_30, and power supply ground is the KL_31 power supply, perhaps adopts ignition switch KL_15 power supply.As shown in Figure 1, normal power supply is powered to automobile electronic controller by voltage stabilizing diode, and normal power supply power supply mode needing to be used for the ECU of power supply supply always.As shown in Figure 2, ignition switch power supply only then be suitable for need work when ignition switch is closed, idle ECU when ignition switch disconnects.
Continuous lifting along with the automotive electronics degree, requirement to function also becomes increasingly complex, some special applications has also proposed specific (special) requirements to the power supply mode of ECU, for example electronic steering column lock controller requires to require the automobile electronic controller system cut-off when ignition switch is closed, then requires the automobile electronic controller system to power on when ignition switch disconnects.Existing technology can not satisfy above-mentioned demand.
Summary of the invention
Technical matters to be solved by this invention provides a kind of feed circuit of automobile electronic controller, can supply by Switching power power supply when ignition switch disconnects when ignition switch is closed.
For solving the problems of the technologies described above, technical scheme of the present invention is, comprise a normal power supply, the just very KL_30 of this normal power supply, ground connection is KL_31 very, an ignition switch KL_15, also comprise two two-way relays, described ignition switch KL_15 one end is connected with the anodal KL_30 of normal power supply, the other end is connected with the input end of the drive coil of two-way relay 1 and two-way relay 2, the controlled switch input terminal of two-way relay 1 is connected with normal positive source KL_30, the output head grounding of two-way relay 1 and two-way relay 2 drive coils, the output terminal of the controlled switch of two-way relay 1 is connected with the controlled switch input terminal of two-way relay 2, the controlled output switching terminal of two-way relay 2 is powered to automobile electronic controller by voltage stabilizing diode, when ignition switch KL_15 is in off-state, the drive coil of two-way relay 1 and two-way relay 2 does not have electric current to pass through, relay 1 and relay 2 remain on default location, the electronic controller feed circuit are connected to normal positive source KL_30, electronic controller is in the power-up state of operate as normal, when ignition switch KL_15 is in closure state, the drive coil of two-way relay 1 and two-way relay 2 has electric current to pass through, two-way relay 1 and 2 adhesives of two-way relay, the electronic controller feed circuit disconnect mutually with the anodal KL_30 of normal power supply, and electronic controller is in power-down state.
Be also to comprise the relay fault diagnosis circuit that is connected with two-way relay 2 with two-way relay 1 and detects two-way relay duty as a further improvement on the present invention.
Be the integrated relay socket that is provided with on the automobile electronic controller as another kind of further improvement of the present invention.
The present invention is by two two-way relays in feed circuit, and the drive coil input end of these two two-way relays is connected with ignition switch, and when ignition switch disconnected, electronic controller was powered by normal power supply, when ignition switch was closed, electronic controller was in off-position.
Description of drawings
The present invention is further detailed explanation below in conjunction with drawings and Examples:
Fig. 1 is for adopting the power supply circuit of automobile electronic controller figure of normal power supply power supply mode;
Fig. 2 is for adopting the power supply circuit of automobile electronic controller figure of ignition switch power supply mode;
Fig. 3 is the synoptic diagram of circuit of the present invention when ignition switch disconnects;
Fig. 4 is the synoptic diagram of circuit of the present invention when ignition switch is closed.
Embodiment
As shown in Figure 3, this power supply circuit of automobile electronic controller comprises a normal power supply, the just very KL_30 of this normal power supply, and ground connection is KL_31 very.This normal power supply can be an accumulator.An ignition switch KL_15, the two-way relay that also comprises two series connection, described ignition switch KL_15 one end is connected with the anodal KL_30 of normal power supply, the other end is connected with the input end of the drive coil of two-way relay 1 and two-way relay 2, the controlled switch input terminal of two-way relay 1 is connected with normal positive source KL_30, the output head grounding of two-way relay 1 and two-way relay 2 drive coils, the output terminal of the controlled switch of two-way relay 1 is connected with the controlled switch input terminal of two-way relay 2, the controlled output switching terminal of two-way relay 2 is connected with voltage stabilizing diode, and its output terminal is as the power input of automobile electronic controller.Also comprise the relay fault diagnosis circuit that is connected with two-way relay 2 with two-way relay 1 and detects two-way relay duty.The fault diagnosis circuit of relay detects the duty of each relay at the ECU duration of work, and when the relay fault diagnosis circuit detected relay and breaks down, automobile electronic controller was recorded in the diagnostic trouble code of correspondence in the storer of automobile electronic controller.The user can be connected with the storer of automobile electronic controller with diagnostic equipment in automobile maintenance station and read diagnostic trouble code (Diagnostic Trouble Code is called for short DTC), thereby the fault type of determining the relay fault diagnosis circuit keeps in repair.When a certain two-way relay broke down, alarm lamp was reported to the police, and was confirmed to be which two-way relay and broke down, so that in time change.And the integrated relay socket that is provided with on the automobile electronic controller when needs are changed the two-way relay, can in time be changed the relay that breaks down very easily, guarantees the electronic controller operate as normal.
KL_15 is in off-state when ignition switch, when being KL_15=0, the drive coil of two-way relay 1 and two-way relay 2 does not have electric current to pass through, relay 1 and relay 2 remain on default location, be that controlled switch is in conducting state, the electronic controller feed circuit are connected to normal positive source KL_30, and electronic controller is in power-up state, and can the electronic controller operate as normal.
KL_15 is in closure state when ignition switch, when being KL_15=1, the drive coil of two-way relay 1 and two-way relay 2 has electric current to pass through, two-way relay 1 and 2 adhesives of two-way relay, the electronic controller feed circuit disconnect mutually with the anodal KL_30 of normal power supply, and electronic controller is in power-down state.
The present invention has increased by two two-way relays in the feed circuit of automobile electronic controller, when ignition switch disconnects, and the electronic controller operate as normal, and when ignition switch was closed, electronic controller was in power-down state.And break down and normally during adhesive, the relay of another operate as normal has guaranteed that still the ECU feed circuit disconnect from battery positive voltage when any one two-way relay.The present invention closes feed circuit for the high-reliability ignition switch that satisfies this special power requirement.
Claims (6)
1. power supply circuit of automobile electronic controller, it is characterized in that, comprise a normal power supply, the just very KL_30 of this normal power supply, ground connection is KL_31 very, an ignition switch KL_15, also comprise two two-way relays, described ignition switch KL_15 one end is connected with the anodal KL_30 of normal power supply, the other end is connected with the input end of the drive coil of two-way relay 1 and two-way relay 2, the controlled switch input terminal of two-way relay 1 is connected with normal positive source KL_30, the output head grounding of two-way relay 1 and two-way relay 2 drive coils, the output terminal of the controlled switch of two-way relay 1 is connected with the controlled switch input terminal of two-way relay 2, the controlled output switching terminal of two-way relay 2 is powered to automobile electronic controller by voltage stabilizing diode, when ignition switch KL_15 is in off-state, the drive coil of two-way relay 1 and two-way relay 2 does not have electric current to pass through, relay 1 and relay 2 remain on default location, the electronic controller feed circuit are connected to normal positive source KL_30, electronic controller is in the power-up state of operate as normal, when ignition switch KL_15 is in closure state, the drive coil of two-way relay 1 and two-way relay 2 has electric current to pass through, two-way relay 1 and 2 adhesives of two-way relay, the electronic controller feed circuit disconnect mutually with the anodal KL_30 of normal power supply, and electronic controller is in power-down state.
2. power supply circuit of automobile electronic controller according to claim 1 is characterized in that, also comprises the relay fault diagnosis circuit that is connected with two-way relay 2 with two-way relay 1 and detects two-way relay duty.
3. power supply circuit of automobile electronic controller according to claim 1 is characterized in that, the integrated relay socket that is provided with on the automobile electronic controller.
4. power supply circuit of automobile electronic controller according to claim 2 is characterized in that the relay fault diagnosis circuit is connected with alarm lamp, and when detected relay breaks down, this alarm lamp is reported to the police.
5. power supply circuit of automobile electronic controller according to claim 2 is characterized in that, when the relay fault diagnosis circuit detected relay and breaks down, automobile electronic controller was recorded in the diagnostic trouble code of correspondence in the storer of automobile electronic controller.
6. power supply circuit of automobile electronic controller according to claim 1 is characterized in that, described normal power supply is an accumulator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100433290A CN101576736B (en) | 2008-05-06 | 2008-05-06 | Power supply circuit of automobile electronic controller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100433290A CN101576736B (en) | 2008-05-06 | 2008-05-06 | Power supply circuit of automobile electronic controller |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101576736A CN101576736A (en) | 2009-11-11 |
| CN101576736B true CN101576736B (en) | 2010-12-01 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008100433290A Expired - Fee Related CN101576736B (en) | 2008-05-06 | 2008-05-06 | Power supply circuit of automobile electronic controller |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101576736B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004322976A (en) * | 2003-04-28 | 2004-11-18 | Koyo Seiko Co Ltd | Steering apparatus for vehicles |
| KR20050053806A (en) * | 2003-12-03 | 2005-06-10 | 현대자동차주식회사 | Intake air pre-heating device and control method thereof |
| CN1845419A (en) * | 2006-05-09 | 2006-10-11 | 镇江江奎科技有限公司 | Power supply control circuit of automobile electronic control device |
| CN101109349A (en) * | 2007-08-07 | 2008-01-23 | 力帆实业(集团)有限公司 | ECU delayed processing circuit of motorcycle |
-
2008
- 2008-05-06 CN CN2008100433290A patent/CN101576736B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004322976A (en) * | 2003-04-28 | 2004-11-18 | Koyo Seiko Co Ltd | Steering apparatus for vehicles |
| KR20050053806A (en) * | 2003-12-03 | 2005-06-10 | 현대자동차주식회사 | Intake air pre-heating device and control method thereof |
| CN1845419A (en) * | 2006-05-09 | 2006-10-11 | 镇江江奎科技有限公司 | Power supply control circuit of automobile electronic control device |
| CN101109349A (en) * | 2007-08-07 | 2008-01-23 | 力帆实业(集团)有限公司 | ECU delayed processing circuit of motorcycle |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101576736A (en) | 2009-11-11 |
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Granted publication date: 20101201 |
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| CF01 | Termination of patent right due to non-payment of annual fee |