CN102496914A - Preheating relay preventing short-circuit failure - Google Patents
Preheating relay preventing short-circuit failure Download PDFInfo
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- CN102496914A CN102496914A CN2011104291820A CN201110429182A CN102496914A CN 102496914 A CN102496914 A CN 102496914A CN 2011104291820 A CN2011104291820 A CN 2011104291820A CN 201110429182 A CN201110429182 A CN 201110429182A CN 102496914 A CN102496914 A CN 102496914A
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- 230000005669 field effect Effects 0.000 claims abstract description 20
- 239000003990 capacitor Substances 0.000 claims description 17
- 230000001012 protector Effects 0.000 claims description 14
- 239000003381 stabilizer Substances 0.000 claims description 5
- 230000000087 stabilizing effect Effects 0.000 claims description 5
- 238000001914 filtration Methods 0.000 abstract description 3
- 230000001681 protective effect Effects 0.000 abstract 4
- 238000010304 firing Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 239000007858 starting material Substances 0.000 description 2
- 230000003750 conditioning effect Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000036039 immunity Effects 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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Abstract
The invention relates to a preheating relay preventing short-circuit failure, which comprises an input circuit, wherein, the output end of the input circuit is connected with the input end of a delay circuit used for filtering disturbing signals; the output end of the delay circuit is connected with the input end of an output circuit; and the output end of the output circuit is connected with the input end of a temperature protective circuit. In the invention, the delay circuit is used for filtering the external disturbing signals so as to prevent the electromagnetic wave impulse signal from influencing the preheating relay; and besides, due to the adoption of the temperature protective circuit, when a power field-effect transistor is short-circuited and is in failure, the heat is generated and can quickly fuse the temperature protective circuit together with the immense heat generated by the temperature protective circuit, so as to allow the failure model of the output end of the preheating relay to be in the turn-off state and protect the whole preheating auxiliary starting system.
Description
Technical field
The present invention relates to a kind of relay, especially a kind of preheating relay that is used to avoid the short circuit inefficacy.
Background technology
The automobile start system comprises starting switch, starter relay, starter and preheating auxiliary starting device etc.; The preheating auxiliary starting device is in critical role in the automobile start system; Automobile adopts the preheating auxiliary starting device of preheating relay control that the engine charge air is heated when cold-starting, thereby engine is started smoothly.
According to GB/T18325.3-2005 country motor vehicle emission standard phase III restriction (being called for short state's III); State's III standard diesel engine adopts preheating relay control electronic heater; The electrons heat actuator temperature is risen up to 950 ℃; Directly the engine charge air is heated, thereby engine is started smoothly.What present preheating relay generally adopted is electromagnetic relay, and it can produce the contact arc spark, and the contact damages easily, the welding phenomenon can occur at big current conditions lower contact especially, and environmental suitability is poor.In addition; The impaired meeting of preheating relay causes the power field effect tube short circuit to lose efficacy; Make the break-make of the uncontrollable power field effect pipe of input control voltage, power field effect pipe remains short-circuit condition connects output all the time, and whole preheating auxiliary starting device is with continuous firing.
Summary of the invention
The preheating relay that is used to avoid the short circuit inefficacy that the object of the present invention is to provide a kind of strong interference immunity, power field effect pipe can in time be broken off when short circuit.
For realizing above-mentioned purpose; The present invention has adopted following technical scheme: a kind of preheating relay that is used to avoid the short circuit inefficacy; Comprise input circuit; The output of input circuit links to each other with the input of the delay circuit that is used to filter interference signal, and the output of delay circuit links to each other with the input of output circuit, and the output of output circuit links to each other with the input of temperature protection circuit.
Can know by technique scheme, the present invention utilize delay circuit to external world interference signal carry out filtration treatment, avoided of the interference of electromagnetic impulse signal to preheating relay.In addition; Pass through temperature protection circuit; But the huge heat quick fuse temperature protection circuit that heat that when power field effect pipe is short-circuited inefficacy, produces and temperature protection circuit produce; Make the failure mode of preheating relay output be off state, thereby protect whole preheating auxiliary starting system.
Description of drawings
Fig. 1 is a wiring circuit block diagram of the present invention.
Fig. 2 is circuit theory diagrams of the present invention.
Embodiment
A kind of preheating relay that is used to avoid the short circuit inefficacy; Comprise input circuit; The output of input circuit links to each other with the input of the delay circuit 1 that is used to filter interference signal; The output of delay circuit 1 links to each other with the input of output circuit, and the output of output circuit links to each other with the input of temperature protection circuit, like Fig. 1, shown in 2.
Like Fig. 1, shown in 2; The input of described input circuit links to each other with the output of central controller ECU; The output of input circuit links to each other with the input of delay circuit 1, and the output of delay circuit 1 links to each other with the input of buffer circuit 2, and the output of buffer circuit 2 links to each other with the input of output circuit; The output of output circuit links to each other with the input of temperature protection circuit, and the output of temperature protection circuit links to each other with electronic heater.The output of described buffer circuit 2 links to each other with the input of output circuit through RC discharge circuit 3.
Be further described below in conjunction with Fig. 1,2 couples of the present invention.
Described input circuit comprises voltage stabilizing didoe V1; Its negative electrode connects the output of central controller ECU; Its anode links to each other with the end of current-limiting resistance R2, and the other end of current-limiting resistance R2 links to each other with the input of buffer circuit 2, and the negative electrode of counnter attack diode V5 connects the output of central controller ECU; The anode of counnter attack diode V5 links to each other with the input of buffer circuit 2, and the two ends of resistance R 1 connect the negative electrode of voltage stabilizing didoe V1, the negative electrode of counnter attack diode V5 respectively.Input circuit adopts DC input voitage, and voltage stabilizing didoe V1, current-limiting resistance R2 provide stable working direct current to subsequent conditioning circuit, and counnter attack diode V5 avoids causing damaging preheating relay owing to the reversal connection of input both positive and negative polarity.
Described delay circuit 1 comprises diode V2; The negative electrode of diode V2 links to each other with an end of resistance R 5, the negative electrode of diode V3 respectively; The anode of diode V3 links to each other with an end of capacitor C 1 through resistance R 6, and the other end of capacitor C 1 links to each other with the anode of diode V2, and the other end of resistance R 5 links to each other with the input of inverter 5; The output of inverter 5 links to each other with an end of resistance R 7; The other end of resistance R 7 links to each other with an end of resistance R 8, the base stage of triode V4 respectively, and the other end of resistance R 8 links to each other with the emitter of triode V4, and the collector electrode of triode V4 links to each other with the input of buffer circuit 2.When the preheating relay operating state, diode V2 provides operating voltage to inverter 5, and the RC circuit of being made up of resistance R 5 and capacitor C 1 is charged; Adjustment resistance R 5 and capacitor C 1 make the charging interval, and promptly delay time is 200ms ± 50ms; The 1st pin of inverter 5 powers up, and through two not circuits, passes through resistance R 7, R8 dividing potential drop again; Connect triode V4, thereby input current signal is passed to buffer circuit 2.
Described buffer circuit 2 comprises triode V6; The emitter of triode V6 links to each other with the output of delay circuit 1; The collector electrode of triode V6 links to each other with the parallel connected end of resistance R 9, capacitor C 2; The base stage of triode V6 links to each other with the parallel connected end of resistance R 10, capacitor C 3, and the base stage of triode V7 links to each other with the parallel connected end of resistance R 9, capacitor C 2, the collector electrode of triode V7 and the primary coil that meets isolating transformer T after the parallel connected end of resistance R 10, capacitor C 3 links to each other; The emitter of triode V7 links to each other with the emitter of triode V6; The anode of the integrated rectifier diode D1 of one termination of the secondary coil of isolating transformer T, the negative electrode of the integrated rectifier diode D2 of another termination of the secondary coil of isolating transformer T, the negative electrode of integrated rectifier diode D1 links to each other with the end of current-limiting resistance R11; The other end of current-limiting resistance R11 links to each other with the negative electrode of voltage-stabiliser tube V8, and the anode of voltage-stabiliser tube V8 links to each other with the anode of integrated rectifier diode D2.Described isolated part is by triode V6, V7; Resistance R 9, R10 and capacitor C 2, C3 and isolating transformer T constitute two-wayly recommends self-maintained circuit input dc power is flowed signal transition is ac current signal; After adopting isolating transformer T coupling to isolate, two integrated rectifier diode D1, D2, current-limiting resistance R11, voltage-stabiliser tube V8 linking to each other through the secondary coil with isolating transformer T are the direct-current working volts that output circuit provides reasonably stability.
Described output circuit is made up of power field effect pipe Q1, Q2, Q3, the Q4 of four parallel connections.When buffer circuit 2 provides the direct voltage of reasonably stability, above-mentioned four power field effect pipe normallies; When buffer circuit 2 does not provide the direct voltage of reasonably stability, above-mentioned four power field effect pipe normal turn-off.
Described RC discharge circuit 3 is made up of resistance R 12 and capacitor C 4; Between output circuit and buffer circuit 2, add 3 pairs of power field effect pipes of RC discharge circuit and carry out repid discharge; Avoid since the G utmost point of power field effect pipe because stored charge produces damage, the operate as normal of guaranteed output FET to the output circuit of preheating relay.
Described temperature protection circuit is made up of with control relay K temperature protector 4; The input of temperature protector 4 links to each other with the output of output circuit; The output of temperature protector 4 links to each other with electronic heater; The input of control relay K links to each other with the anode of resistance R 1, counnter attack diode V5 respectively, and the output of control relay K links to each other with temperature protector 4 interior thermistor R13.When preheating relay damages; Because mostly the failure mode of the power field effect pipe of output is the short circuit inefficacy, when the inefficacy of power field effect tube short circuit takes place when, the output circuit of the uncontrollable preheating relay of input circuit; Output circuit remains conducting state; Whole preheating auxiliary starting system because system power is big, can make engine and car load have potential safety hazard continuous firing.Temperature protection circuit generates heat when the preheating relay short circuit damages; Make temperature protector 4 quick fuses; Cut off the output circuit of preheating relay, avoid the also potential safety hazard that causes of the situation of continuous firing of under power field effect tube short circuit failure conditions whole preheating auxiliary starting system.
In sum, input Control current of the present invention is little, adopts to have the delay circuit 1 that electromagnetic pulse-resisting disturbs; Output circuit is powerful FET, and does not have the contact, does not produce arc spark; And be provided with temperature protection circuit at output circuit, protection in time was provided when the high-power FET short circuit was lost efficacy, break off output circuit; Avoided the short circuit of preheating relay to lose efficacy, advantage such as have that environmental suitability is strong, functional reliability is high and the life-span is long.
Claims (9)
1. preheating relay that is used to avoid short circuit to lose efficacy; It is characterized in that: comprise input circuit; The output of input circuit links to each other with the input of the delay circuit that is used to filter interference signal (1); The output of delay circuit (1) links to each other with the input of output circuit, and the output of output circuit links to each other with the input of temperature protection circuit.
2. the preheating relay that is used to avoid the short circuit inefficacy according to claim 1; It is characterized in that: the input of described input circuit links to each other with the output of central controller ECU; The output of input circuit links to each other with the input of delay circuit (1); The output of delay circuit (1) links to each other with the input of buffer circuit (2); The output of buffer circuit (2) links to each other with the input of output circuit, and the output of output circuit links to each other with the input of temperature protection circuit, and the output of temperature protection circuit links to each other with electronic heater.
3. the preheating relay that is used to avoid the short circuit inefficacy according to claim 1 is characterized in that: the output of described buffer circuit (2) links to each other with the input of output circuit through RC discharge circuit (3).
4. the preheating relay that is used to avoid the short circuit inefficacy according to claim 2; It is characterized in that: described input circuit comprises voltage stabilizing didoe V1; Its negative electrode connects the output of central controller ECU; Its anode links to each other with the end of current-limiting resistance R2, and the other end of current-limiting resistance R2 links to each other with the input of buffer circuit (2), and the negative electrode of counnter attack diode V5 connects the output of central controller ECU; The anode of counnter attack diode V5 links to each other with the input of buffer circuit (2), and the two ends of resistance R 1 connect the negative electrode of voltage stabilizing didoe V1, the negative electrode of counnter attack diode V5 respectively.
5. the preheating relay that is used to avoid the short circuit inefficacy according to claim 2; It is characterized in that: described delay circuit (1) comprises diode V2; The negative electrode of diode V2 links to each other with an end of resistance R 5, the negative electrode of diode V3 respectively; The anode of diode V3 links to each other with an end of capacitor C 1 through resistance R 6, and the other end of capacitor C 1 links to each other with the anode of diode V2, and the other end of resistance R 5 links to each other with the input of inverter (5); The output of inverter (5) links to each other with an end of resistance R 7; The other end of resistance R 7 links to each other with an end of resistance R 8, the base stage of triode V4 respectively, and the other end of resistance R 8 links to each other with the emitter of triode V4, and the collector electrode of triode V4 links to each other with the input of buffer circuit (2).
6. the preheating relay that is used to avoid the short circuit inefficacy according to claim 2; It is characterized in that: described buffer circuit (2) comprises triode V6; The emitter of triode V6 links to each other with the output of delay circuit (1); The collector electrode of triode V6 links to each other with the parallel connected end of resistance R 9, capacitor C 2; The base stage of triode V6 links to each other with the parallel connected end of resistance R 10, capacitor C 3, and the base stage of triode V7 links to each other with the parallel connected end of resistance R 9, capacitor C 2, the collector electrode of triode V7 and the primary coil that meets isolating transformer T after the parallel connected end of resistance R 10, capacitor C 3 links to each other; The emitter of triode V7 links to each other with the emitter of triode V6; The anode of the integrated rectifier diode D1 of one termination of the secondary coil of isolating transformer T, the negative electrode of the integrated rectifier diode D2 of another termination of the secondary coil of isolating transformer T, the negative electrode of integrated rectifier diode D1 links to each other with the end of current-limiting resistance R11; The other end of current-limiting resistance R11 links to each other with the negative electrode of voltage-stabiliser tube V8, and the anode of voltage-stabiliser tube V8 links to each other with the anode of integrated rectifier diode D2.
7. the preheating relay that is used to avoid the short circuit inefficacy according to claim 2, it is characterized in that: described output circuit is made up of power field effect pipe Q1, Q2, Q3, the Q4 of four parallel connections.
8. the preheating relay that is used to avoid the short circuit inefficacy according to claim 2; It is characterized in that: described temperature protection circuit is made up of temperature protector (4) and control relay K; The input of temperature protector (4) links to each other with the output of output circuit; The output of temperature protector (4) links to each other with electronic heater; The input of control relay K links to each other with the anode of resistance R 1, counnter attack diode V5 respectively, and the output of control relay K links to each other with the interior thermistor R13 of temperature protector (4).
9. the preheating relay that is used to avoid the short circuit inefficacy according to claim 3 is characterized in that: described RC discharge circuit (3) is made up of resistance R 12 and capacitor C 4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110429182.0A CN102496914B (en) | 2011-12-20 | 2011-12-20 | Preheating relay preventing short-circuit failure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110429182.0A CN102496914B (en) | 2011-12-20 | 2011-12-20 | Preheating relay preventing short-circuit failure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102496914A true CN102496914A (en) | 2012-06-13 |
| CN102496914B CN102496914B (en) | 2014-07-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110429182.0A Expired - Fee Related CN102496914B (en) | 2011-12-20 | 2011-12-20 | Preheating relay preventing short-circuit failure |
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| Country | Link |
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| CN (1) | CN102496914B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103746559A (en) * | 2012-11-23 | 2014-04-23 | 安徽省智纯动力科技有限公司 | Large-power DC controller possessing active and passive safety protection functions |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2604744Y (en) * | 2002-09-24 | 2004-02-25 | 黄新 | Anti-prizing door multi-point anti-prizing alarmer |
| JP2006020452A (en) * | 2004-07-02 | 2006-01-19 | Hitachi Ltd | Protection relay system for generator main circuit |
| CN2813907Y (en) * | 2005-05-11 | 2006-09-06 | 韩光福 | Vehicle engine preheating timer |
| CN201314267Y (en) * | 2008-11-28 | 2009-09-23 | 信息产业部电子第四十研究所华成高新技术公司 | Solid type diesel engine starting and preheating relay |
| CN201562953U (en) * | 2009-10-19 | 2010-08-25 | 广州市圣大电子有限公司 | Temperature protection circuit with software and hardware control function |
| CN202435018U (en) * | 2011-12-20 | 2012-09-12 | 信息产业部电子第四十研究所华成高新技术公司 | Preheating relay for preventing short circuit failure |
-
2011
- 2011-12-20 CN CN201110429182.0A patent/CN102496914B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2604744Y (en) * | 2002-09-24 | 2004-02-25 | 黄新 | Anti-prizing door multi-point anti-prizing alarmer |
| JP2006020452A (en) * | 2004-07-02 | 2006-01-19 | Hitachi Ltd | Protection relay system for generator main circuit |
| CN2813907Y (en) * | 2005-05-11 | 2006-09-06 | 韩光福 | Vehicle engine preheating timer |
| CN201314267Y (en) * | 2008-11-28 | 2009-09-23 | 信息产业部电子第四十研究所华成高新技术公司 | Solid type diesel engine starting and preheating relay |
| CN201562953U (en) * | 2009-10-19 | 2010-08-25 | 广州市圣大电子有限公司 | Temperature protection circuit with software and hardware control function |
| CN202435018U (en) * | 2011-12-20 | 2012-09-12 | 信息产业部电子第四十研究所华成高新技术公司 | Preheating relay for preventing short circuit failure |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103746559A (en) * | 2012-11-23 | 2014-04-23 | 安徽省智纯动力科技有限公司 | Large-power DC controller possessing active and passive safety protection functions |
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| Publication number | Publication date |
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| CN102496914B (en) | 2014-07-30 |
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Address after: 233010 North Tower, 20 tower 773, Changzheng Road, Bengbu, Anhui. Patentee after: ANHUI HUACHENG ELECTRONIC TECHNOLOGY Co.,Ltd. Address before: 233010 No. 773 long march road, Anhui, Bengbu Patentee before: HUACHENG HIGH TECH Co.,Ltd. OF ELECTRONIC NO 40 RES INST MINISTRY OF INDUSTRY AND INFORMATION TECHNOLO |
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Effective date of registration: 20191107 Address after: 233010 No. 772 long march road, Anhui, Bengbu Patentee after: THE 40TH INSTITUTE OF CHINA ELECTRONICS TECHNOLOGY Corp. Address before: 233010 North Tower, 20 tower 773, Changzheng Road, Bengbu, Anhui. Patentee before: ANHUI HUACHENG ELECTRONIC TECHNOLOGY Co.,Ltd. |
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