CN107061097B - A kind of sintering melting welding of automobile starting switch contact detect automatically protects circuit - Google Patents
A kind of sintering melting welding of automobile starting switch contact detect automatically protects circuit Download PDFInfo
- Publication number
- CN107061097B CN107061097B CN201710475487.2A CN201710475487A CN107061097B CN 107061097 B CN107061097 B CN 107061097B CN 201710475487 A CN201710475487 A CN 201710475487A CN 107061097 B CN107061097 B CN 107061097B
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- Prior art keywords
- triode
- starter
- resistance
- automobile
- contact
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
- F02N11/00—Starting of engines by means of electric motors
- F02N11/08—Circuits or control means specially adapted for starting of engines
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
- F02N11/00—Starting of engines by means of electric motors
- F02N11/10—Safety devices
Abstract
The present invention, which provides a kind of sintering melting welding of automobile starting switch contact and detect automatically, protects circuit; it is related to protection of circuit field; circuit is linked on DC1 power supply through anode and cathode; one end of the anode series connection K1 switch of DC1 power supply, other end connection D1 diode cathode, one end of R1 resistance, D2 diode cathode, R4 resistance one end, one end of J1 relay and the normally-closed contact of J1-1 of K1 switch；D1 diode cathode is connected to the other end of the anode of C1 capacitor, one end of R2 resistance and R1 resistance, C1 capacitor cathode ground connection, the other end of R2 resistance is connected to the base stage of Q1 triode, the emitter of Q1 triode is connected to D2 diode cathode, and the collector of Q1 triode is connected to the base stage of Q2 triode through R3 resistance；The present invention after starter power starting relay contact is sintered melting welding after it can not disconnect, Y1 buzzer and LED light work once electrified, issue alarm sound and LED light prompt facility, prompt electric shock switch to be sintered melting welding, need repairing replacement.
Description
Technical field
The present invention relates to protection circuit fields, and in particular to a kind of sintering melting welding of automobile starting switch contact detects guarantor automatically
Protection circuit.
Background technique
Because automobile starter needs often starting automobile, electric current is very big when starter works, and makes at switch contact for a long time
In working between on and off, automobile starter starting current conference makes switch contact sintering be welded together, and works as starter in this way
After starting relay coil disconnects, it can not be disconnected after being sintered melting welding due to starter power starting relay contact, make to start
Machine is constantly in working condition, can make the fever of starter Inside coil serious for a long time, can burn out starter, Yin Farewen
Degree is high even to generate fire condition.
Summary of the invention
In view of the deficiencies of the prior art, the present invention provides a kind of sintering melting welding of automobile starting switch contact to detect guarantor automatically
Protection circuit allows starter power starting relay contact to be sintered melting welding and detects automatically.
In order to achieve the above object, the present invention is achieved by the following technical programs: a kind of automobile starting switch contact burning
Knot melting welding detects protection circuit automatically, and the circuit is linked on DC1 power supply through anode and cathode, the anode of the DC1 power supply
The other end of one end that the K1 that connects is switched, the K1 switch is connecting D1 diode cathode, one end of R1 resistance, D2 diode just
Pole, R4 resistance one end, one end of J1 relay and the normally-closed contact of J1-1；The D1 diode cathode is being connected to C1 capacitor just
The other end of pole, one end of R2 resistance and R1 resistance, the C1 capacitor cathode ground connection, the other end of the R2 resistance are connected to Q1
The base stage of triode, the emitter of the Q1 triode are connected to D2 diode cathode, and the collector of the Q1 triode is through R3
Resistance is connected to the base stage of Q2 triode, the collector of the Q2 triode be connected to Q3 triode base stage and R4 resistance it is another
The collector of one end, the Q3 triode is connected to the other end of J1 relay, and the normally opened contact of the J1-1 is connected to Y1
The other end of one end of buzzer and one end of R5 resistance, the R5 resistance is connected to the anode of LED1 diode；The DC1 electricity
The anode series connection K1 switch in source, the normally-closed contact of J1-1 are connected to the anode of DC2 power supply, and the DC2 power supply is powered to starter.
Preferably, the Q2 triode and Q3 transistor emitter ground connection.
Preferably, the other end ground connection of the Y1 buzzer, the cathode ground connection of the LED1 diode.
Preferably, the DC1 power supply is the direct current of 12V~24V.
Preferably, the Q1 triode is positive-negative-positive, and the Q2 triode and Q3 triode are NPN type.
The present invention provides a kind of sintering melting welding of automobile starting switch contact to detect protection circuit automatically, works as starter power
Starting relay contact can not disconnect after being sintered melting welding, Y1 buzzer and LED light work once electrified, issue alarm sound and LED
Lamp prompt facility prompts K1 relay contacts switch to be sintered melting welding, and need repairing replacement.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
It obtains other drawings based on these drawings.
Fig. 1 is circuit diagram of the invention.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art
Every other embodiment obtained without creative efforts, shall fall within the protection scope of the present invention.
Embodiment:
As shown in Figure 1, a kind of automobile starting switch contact sintering melting welding detects protection circuit automatically, the circuit is through anode
It is linked on DC1 power supply with cathode, one end of the anode series connection K1 switch of the DC1 power supply, the other end of the K1 switch connects
Connect the normal of D1 diode cathode, one end of R1 resistance, D2 diode cathode, R4 resistance one end, one end of J1 relay and J1-1
Closed contact；The D1 diode cathode is connected to the other end of the anode of C1 capacitor, one end of R2 resistance and R1 resistance, the C1
Capacitor cathode ground connection, the other end of the R2 resistance are connected to the base stage of Q1 triode, the emitter connection of the Q1 triode
To D2 diode cathode, the collector of the Q1 triode is connected to the base stage of Q2 triode, the Q2 triode through R3 resistance
Collector be connected to the base stage of Q3 triode and the other end of R4 resistance, the collector of the Q3 triode be connected to J1 after
The other end of electric appliance, the normally opened contact of the J1-1 are connected to one end of Y1 buzzer and one end of R5 resistance, the R5 resistance
The other end be connected to the anode of LED1 diode；The normally-closed contact connection of anode series connection the K1 switch, J1-1 of the DC1 power supply
To the anode of DC2 power supply, the DC2 power supply is powered to starter；The Q2 triode and Q3 transistor emitter ground connection；It is described
The other end of Y1 buzzer is grounded, the cathode ground connection of the LED1 diode；The DC1 power supply is the direct current of 12V~24V；
The Q1 triode is positive-negative-positive, and the Q2 triode and Q3 triode are NPN type.
Working principle:
DC1 anode and cathode are connected in automobile on 12V power supply first, DC2 anode and cathode are connected to starter
Feeder ear.
When automobile on startup, after startup power supply is connected, starter starting relay obtains electric actuation, relay normally open touching
Point is connected, and+12V voltage divides two-way after K1 is connected, and exports 12V voltage after the connection of the normally-closed contact of J1 relay all the way to starting
Device power supply, rotates starter motor, starts automobile, and automobile is made normally to be in starting working condition, another way through R1 resistance to
C1 capacitor charging, makes Q1 triode be in low level, Q1 triode ON, and collector exports high level, is connected to through R3 resistance
Q2 transistor base makes Q2 triode ON, and Q2 transistor collector is in low level, ends Q3 triode, J1 relay
It does not work.When C1 capacitor underfill electricity whithin a period of time, and automobile has normally started at this time, and K1 starts the relay of starter
Normally-closed contact normally disconnects.Starter power supply 12V is disconnected, and starter is in off position.
Because automobile starter needs often starting automobile, electric current is very big when starter works, and is for a long time in the contact K1
It works between on and off, automobile starter starting current conference makes the sintering of the contact K1 be welded together, in this way when starter starts
After relay coil disconnects, it can not be disconnected after being sintered melting welding due to starter power starting relay contact, make starter one
It is straight in running order, it can make the fever of starter Inside coil serious for a long time, starter can be burnt out, because of heating temperature height
Fire condition can even be generated.
When starter starting contact K1 be sintered melting welding after, 12V power supply through R1 to C1 capacitor charging, when charging between about 10
After second, C1 capacitor is fully charged, and Q1 transistor base voltage is made to be higher than emitter voltage 0.7V, ends Q1 triode, simultaneously
End Q2 triode, make Q3 triode ON, J1 relay is attracted, and J1 relay normally closed contact J1-1 closure disconnects J1-1
Normally opened contact, make starter to protect starter, make starter after automobile normally start for electrically disconnected, disconnection 12V
Voltage does not work, and avoids the fever that works long hours and burns out and generate high temperature and fire occurs.After K1 is disconnected, C1 capacitor will lead to
Cross the starter feeder ear electric discharge that D1 diode current flow is connected to DC2 power supply.
After the normally opened contact of J1-1 is connected, make Y1 buzzer and LED light work once electrified, issues alarm sound and LED light
Prompt facility prompts electric shock switch to be sintered melting welding, and need repairing replacement.
The above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although with reference to the foregoing embodiments
Invention is explained in detail, those skilled in the art should understand that: it still can be to aforementioned each implementation
Technical solution documented by example is modified or equivalent replacement of some of the technical features；And these modification or
Replacement, the spirit and scope for technical solution of various embodiments of the present invention that it does not separate the essence of the corresponding technical solution.
Claims (4)
1. a kind of automobile starting switch contact sintering melting welding detects protection circuit automatically, which is characterized in that the circuit is through anode
It is linked on DC1 power supply with cathode, one end of the anode series connection K1 switch of the DC1 power supply, the other end of the K1 switch connects
Connect the normal of D1 diode cathode, one end of R1 resistance, D2 diode cathode, R4 resistance one end, one end of J1 relay and J1-1
Closed contact；The D1 diode cathode is connected to the other end of the anode of C1 capacitor, one end of R2 resistance and R1 resistance, the C1
Capacitor cathode ground connection, the other end of the R2 resistance are connected to the base stage of Q1 triode, the emitter connection of the Q1 triode
To D2 diode cathode, the collector of the Q1 triode is connected to the base stage of Q2 triode, the Q2 triode through R3 resistance
Collector be connected to the base stage of Q3 triode and the other end of R4 resistance, the collector of the Q3 triode be connected to J1 after
The other end of electric appliance, the normally opened contact of the J1-1 are connected to one end of Y1 buzzer and one end of R5 resistance, the R5 resistance
The other end be connected to the anode of LED1 diode；The normally-closed contact connection of anode series connection the K1 switch, J1-1 of the DC1 power supply
To the anode of DC2 power supply, the DC2 power supply is powered to starter；
When work:
DC1 anode and cathode are connected in automobile on 12V power supply first, DC2 anode and cathode are connected to the power supply of starter
End；
When automobile on startup, after startup power supply is connected, starter starting relay obtains electric actuation, and relay normally open contact connects
Logical ,+12V voltage divides two-way after K1 is connected, and exports 12V voltage after the connection of the normally-closed contact of J1 relay all the way and supplies to starter
Electricity rotates starter motor, starts automobile, and automobile is made normally to be in starting working condition, and another way is electric to C1 through R1 resistance
Capacity charge, makes Q1 triode be in low level, Q1 triode ON, and collector exports high level, is connected to Q2 tri- through R3 resistance
Pole pipe base stage makes Q2 triode ON, and Q2 transistor collector is in low level, ends Q3 triode, J1 relay not work
Make；When C1 capacitor underfill electricity whithin a period of time, and automobile has normally started at this time, and the relay that K1 starts starter is normally closed
Contact normally disconnects, and starter power supply 12V is disconnected, and starter is in off position；
Because automobile starter need often starting automobile, starter work when electric current it is very big, make for a long time the contact K1 be in open and
It works between pass, automobile starter starting current conference makes the sintering of the contact K1 be welded together, in this way when starter starts relay
After device coil disconnects, it can not be disconnected after being sintered melting welding due to starter power starting relay contact, locate starter always
In working condition, it can make the fever of starter Inside coil serious for a long time, starter can be burnt out, even because of heating temperature height
Fire condition can be generated；
When starter starting contact K1 be sintered melting welding after, 12V power supply through R1 to C1 capacitor charging, when charging between about 10 seconds
Afterwards, C1 capacitor is fully charged, and Q1 transistor base voltage is made to be higher than emitter voltage 0.7V, is ended Q1 triode, is made simultaneously
The cut-off of Q2 triode makes Q3 triode ON, and J1 relay is attracted, and J1 relay normally closed contact J1-1 closure disconnects J1-1's
Normally opened contact supplies starter electrically disconnected, to protect starter, makes starter after automobile normally starts, and disconnects 12V electricity
Pressure does not work, and avoids the fever that works long hours and burns out and generate high temperature and fire occurs；After K1 is disconnected, C1 capacitor will pass through
The starter feeder ear electric discharge that D1 diode current flow is connected to DC2 power supply；
After the normally opened contact of J1-1 is connected, make Y1 buzzer and LED light work once electrified, issues alarm sound and LED light prompt
Function prompts electric shock switch to be sintered melting welding, and need repairing replacement.
2. sintering melting welding in automobile starting switch contact as described in claim 1 detects protection circuit automatically, which is characterized in that institute
State Q2 triode and Q3 transistor emitter ground connection.
3. sintering melting welding in automobile starting switch contact as described in claim 1 detects protection circuit automatically, which is characterized in that institute
State the other end ground connection of Y1 buzzer, the cathode ground connection of the LED1 diode.
4. sintering melting welding in automobile starting switch contact as described in claim 1 detects protection circuit automatically, which is characterized in that institute
Stating Q1 triode is positive-negative-positive, and the Q2 triode and Q3 triode are NPN type.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710475487.2A CN107061097B (en) | 2017-06-21 | 2017-06-21 | A kind of sintering melting welding of automobile starting switch contact detect automatically protects circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710475487.2A CN107061097B (en) | 2017-06-21 | 2017-06-21 | A kind of sintering melting welding of automobile starting switch contact detect automatically protects circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107061097A CN107061097A (en) | 2017-08-18 |
| CN107061097B true CN107061097B (en) | 2019-04-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710475487.2A Active CN107061097B (en) | 2017-06-21 | 2017-06-21 | A kind of sintering melting welding of automobile starting switch contact detect automatically protects circuit |
Country Status (1)
| Country | Link |
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| CN (1) | CN107061097B (en) |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201096050Y (en) * | 2007-10-26 | 2008-08-06 | 车满堂 | Automobile start-up protector |
| CN102182607B (en) * | 2011-06-03 | 2013-01-09 | 丹东星光电器有限公司 | Safe starting controller |
| CN102410123B (en) * | 2011-10-17 | 2013-01-09 | 荆州市鑫祥科技开发有限责任公司 | Double-line plug-in-type startup protector |
| KR20130069163A (en) * | 2011-12-16 | 2013-06-26 | 현대중공업 주식회사 | Apparatus for protecting a starter motor of engine in construction machinery |
| TWI501493B (en) * | 2013-06-13 | 2015-09-21 | Universal Scient Ind Shanghai | Starting engine protector with delay circuit and delay circuit thereof |
| CN206889149U (en) * | 2017-06-21 | 2018-01-16 | 刘广平 | A kind of automobile starting switch contact sinters melting welding automatic detection protection circuit |
-
2017
- 2017-06-21 CN CN201710475487.2A patent/CN107061097B/en active Active
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| Publication number | Publication date |
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| CN107061097A (en) | 2017-08-18 |
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