CN206889149U - A kind of automobile starting switch contact sinters melting welding automatic detection protection circuit - Google Patents
A kind of automobile starting switch contact sinters melting welding automatic detection protection circuit Download PDFInfo
- Publication number
- CN206889149U CN206889149U CN201720725730.7U CN201720725730U CN206889149U CN 206889149 U CN206889149 U CN 206889149U CN 201720725730 U CN201720725730 U CN 201720725730U CN 206889149 U CN206889149 U CN 206889149U
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- CN
- China
- Prior art keywords
- triodes
- resistance
- melting welding
- power supplys
- protection 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
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Abstract
The utility model provides a kind of automobile starting switch contact sintering melting welding automatic detection protection circuit; it is related to protection of circuit field; circuit is linked on DC1 power supplys through positive pole and negative pole; one end of the positive pole series connection K1 switches of DC1 power supplys, the other end of K1 switches connect D1 diode cathodes, one end of R1 resistance, D2 diode cathodes, R4 resistance one end, one end of J1 relays and J1 1 normally-closed contact；D1 diode cathodes are connected to the other end of the positive pole of C1 electric capacity, one end of R2 resistance and R1 resistance, C1 electric capacity negative pole is grounded, the other end of R2 resistance is connected to the base stage of Q1 triodes, the emitter stage of Q1 triodes is connected to D2 diode cathodes, and the colelctor electrode of Q1 triodes is connected to the base stage of Q2 triodes through R3 resistance；The utility model is sintered after melting welding in starter power starting relay contact after can not disconnecting, and Y1 buzzers and LED obtain electric work, sends alarm sound and LED prompt facility, and switch of prompting to get an electric shock has been sintered melting welding, it is necessary to repair replacing.
Description
Technical field
It the utility model is related to protection circuit field, and in particular to a kind of automobile starting switch contact sintering melting welding is examined automatically
Survey protection circuit.
Background technology
Because automobile starter needs often to start automobile, electric current is very big when starter works, and makes for a long time at switch contact
In working between on and off, automobile starter starting current conference makes switch contact sintering be welded together, and so works as starter
After starting relay coil disconnects, it can not be disconnected after being sintered melting welding due to starter power starting relay contact, make starting
Machine is constantly in working condition, can cause that the heating of starter Inside coil is serious for a long time, can burn out starter, Yin Farewen
Degree is high even to produce fire condition.
Utility model content
In view of the shortcomings of the prior art, the utility model provides a kind of automobile starting switch contact sintering melting welding and examined automatically
Survey protection circuit so that starter power starting relay contact is sintered melting welding can be with automatic detection.
To realize object above, the utility model is achieved by the following technical programs：A kind of automobile starting switch is touched
Point sintering melting welding automatic detection protection circuit, the circuit are linked on DC1 power supplys through positive pole and negative pole, the DC1 power supplys
One end of positive pole series connection K1 switches, other end connection D1 diode cathodes, one end of R1 resistance, the D2 diodes of the K1 switches
Positive pole, R4 resistance one end, one end of J1 relays and J1-1 normally-closed contact；The D1 diode cathodes are connected to C1 electric capacity
The other end of positive pole, one end of R2 resistance and R1 resistance, the C1 electric capacity negative pole ground connection, the other end of the R2 resistance are connected to
The base stage of Q1 triodes, the emitter stage of the Q1 triodes are connected to D2 diode cathodes, the colelctor electrode warp of the Q1 triodes
R3 resistance is connected to the base stage of Q2 triodes, and the colelctor electrodes of the Q2 triodes is connected to the base stage and R4 resistance of Q3 triodes
The other end, the colelctor electrode of the Q3 triodes are connected to the other end of J1 relays, and the normally opened contact of the J1-1 is connected to
One end of Y1 buzzers and one end of R5 resistance, the other end of the R5 resistance are connected to the positive pole of LED1 diodes；The DC1
Positive pole series connection K1 switches, the J1-1 normally-closed contact of power supply are connected to the positive pole of DC2 power supplys, and the DC2 power supplys supply to starter
Electricity.
Preferably, Q2 triodes and Q3 the transistor emitters ground connection.
Preferably, the other end ground connection of the Y1 buzzers, the negative pole ground connection of the LED1 diodes.
Preferably, the DC1 power supplys are 12V~24V direct current.
Preferably, the Q1 triodes are positive-negative-positive, and the Q2 triodes and Q3 triodes are NPN type.
The utility model provides a kind of automobile starting switch contact sintering melting welding automatic detection protection circuit, works as starter
Power initiation relay contact can not disconnect after being sintered melting welding, and Y1 buzzers and LED obtain electric work, send alarm sound and
LED prompt facility, K1 relay contacts switch is prompted to be sintered melting welding, it is necessary to repair replacing.
Brief description of the drawings
, below will be to embodiment in order to illustrate more clearly of the utility model embodiment or technical scheme of the prior art
Or the required accompanying drawing used is briefly described in description of the prior art, it should be apparent that, drawings in the following description are only
It is some embodiments of the utility model, for those of ordinary skill in the art, is not paying the premise of creative work
Under, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is circuit diagram of the present utility model.
Embodiment
It is new below in conjunction with this practicality to make the purpose, technical scheme and advantage of the utility model embodiment clearer
Accompanying drawing in type embodiment, the technical scheme in the embodiment of the utility model is clearly and completely described, it is clear that is retouched
The embodiment stated is the utility model part of the embodiment, rather than whole embodiments.Based on the implementation in the utility model
Example, the every other embodiment that those of ordinary skill in the art are obtained under the premise of creative work is not made, is belonged to
The scope of the utility model protection.
Embodiment：
As shown in figure 1, a kind of automobile starting switch contact sintering melting welding automatic detection protection circuit, the circuit is through positive pole
It is linked into negative pole on DC1 power supplys, one end of the positive pole series connection K1 switches of the DC1 power supplys, the other end of the K1 switches connects
Connect the normal of D1 diode cathodes, one end of R1 resistance, D2 diode cathodes, R4 resistance one end, one end of J1 relays and J1-1
Closed contact；The D1 diode cathodes are connected to the other end of the positive pole of C1 electric capacity, one end of R2 resistance and R1 resistance, the C1
Electric capacity negative pole is grounded, and the other end of the R2 resistance is connected to the base stage of Q1 triodes, the emitter stage connection of the Q1 triodes
To D2 diode cathodes, the colelctor electrode of the Q1 triodes is connected to the base stage of Q2 triodes, the Q2 triodes through R3 resistance
Colelctor electrode be connected to the base stage of Q3 triodes and the other end of R4 resistance, the colelctor electrodes of the Q3 triodes be connected to J1 after
The other end of electrical equipment, the normally opened contact of the J1-1 are connected to one end of Y1 buzzers and one end of R5 resistance, the R5 resistance
The other end be connected to the positive poles of LED1 diodes；The normally-closed contact connection of positive pole series connection the K1 switch, J1-1 of the DC1 power supplys
To the positive pole of DC2 power supplys, the DC2 power supplys are powered to starter；Q2 triodes and Q3 the transistor emitters ground connection；It is described
The other end ground connection of Y1 buzzers, the negative pole ground connection of the LED1 diodes；The DC1 power supplys are 12V~24V direct current；
The Q1 triodes are positive-negative-positive, and the Q2 triodes and Q3 triodes are NPN type.
Operation principle：
DC1 positive poles and negative pole are connected in automobile on 12V power supplys first, DC2 positive poles and negative pole are connected to starter
Feeder ear.
When automobile on startup, after startup power supply is connected, starter starting relay obtains electric adhesive, and relay normally open touches
Point connect, K1 connect after+12V voltages divide two-way, all the way through J1 relays normally-closed contact connection after export 12V voltages to startup
Device power, rotate starter motor, start automobile, make automobile normally in start working condition, another way through R1 resistance to
C1 electric capacity charges, and Q1 triodes is in low level, Q1 triode ONs, colelctor electrode output high level, is connected to through R3 resistance
Q2 transistor bases, make Q2 triode ONs, Q2 transistor collectors are in low level, end Q3 triodes, J1 relays
Do not work.When C1C1 electric capacity, underfill is electric within a period of time, and now automobile has normally started, and K1 starts the relay of starter
Device normally-closed contact normally disconnects.Starter power supply 12V disconnects, and starter is in off position.
Because automobile starter needs often to start automobile, electric current is very big when starter works, and is for a long time in K1 contacts
Work between on and off, automobile starter starting current conference makes K1 contacts sintering be welded together, so 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 cause that the heating of starter Inside coil is serious for a long time, starter can be burnt out, because of heating temp height
Fire condition even can be produced.
When starter start contact K1 be sintered melting welding after, 12V power supplys through R1 to C1 electric capacity charge, when charging between about 10
After second, C1C1 electric capacity is fully charged, and Q1 transistor bases voltage is higher than emitter voltage 0.7V, ends Q1 triodes, together
When end Q2 triodes, make Q3 triode ONs, J1 relay adhesives, J1 relay normally closed contacts J1-1 closures, disconnect J1-
1 normally opened contact, starter power supply is disconnected, so as to protect starter, makes starter after automobile normally starts, is disconnected
12V voltages do not work, and avoid the heating that works long hours and burn out and produce high temperature and fire occurs.After K1 disconnects, C1 electric capacity
The starter feeder ear connected by D1 diode current flows to DC2 power supplys is discharged.
After J1-1 normally opened contact is connected, Y1 buzzers and LED is obtained electric work, send alarm sound and LED
Prompt facility, prompting to get an electric shock to switch has been sintered melting welding, it is necessary to repair replacing.
Above example is only to illustrate the technical solution of the utility model, rather than its limitations；Although with reference to foregoing reality
Example is applied the utility model is described in detail, it will be understood by those within the art that：It still can be to preceding
State the technical scheme described in each embodiment to modify, or equivalent substitution is carried out to which part technical characteristic；And these
Modification is replaced, and the essence of appropriate technical solution is departed from the spirit and model of various embodiments of the utility model technical scheme
Enclose.
Claims (5)
1. a kind of automobile starting switch contact sinters melting welding automatic detection protection circuit, it is characterised in that the circuit is through positive pole
It is linked into negative pole on DC1 power supplys, one end of the positive pole series connection K1 switches of the DC1 power supplys, the other end of the K1 switches connects
Connect the normal of D1 diode cathodes, one end of R1 resistance, D2 diode cathodes, R4 resistance one end, one end of J1 relays and J1-1
Closed contact；The D1 diode cathodes are connected to the other end of the positive pole of C1 electric capacity, one end of R2 resistance and R1 resistance, the C1
Electric capacity negative pole is grounded, and the other end of the R2 resistance is connected to the base stage of Q1 triodes, the emitter stage connection of the Q1 triodes
To D2 diode cathodes, the colelctor electrode of the Q1 triodes is connected to the base stage of Q2 triodes, the Q2 triodes through R3 resistance
Colelctor electrode be connected to the base stage of Q3 triodes and the other end of R4 resistance, the colelctor electrodes of the Q3 triodes be connected to J1 after
The other end of electrical equipment, the normally opened contact of the J1-1 are connected to one end of Y1 buzzers and one end of R5 resistance, the R5 resistance
The other end be connected to the positive poles of LED1 diodes；The normally-closed contact connection of positive pole series connection the K1 switch, J1-1 of the DC1 power supplys
To the positive pole of DC2 power supplys, the DC2 power supplys are powered to starter.
2. automobile starting switch contact as claimed in claim 1 sinters melting welding automatic detection protection circuit, it is characterised in that institute
State Q2 triodes and Q3 transistor emitters ground connection.
3. automobile starting switch contact as claimed in claim 1 sinters melting welding automatic detection protection circuit, it is characterised in that institute
State the other end ground connection of Y1 buzzers, the negative pole ground connection of the LED1 diodes.
4. automobile starting switch contact as claimed in claim 1 sinters melting welding automatic detection protection circuit, it is characterised in that institute
State the direct current that DC1 power supplys are 12V~24V.
5. automobile starting switch contact as claimed in claim 1 sinters melting welding automatic detection protection circuit, it is characterised in that institute
It is positive-negative-positive to state Q1 triodes, and the Q2 triodes and Q3 triodes are NPN type.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720725730.7U CN206889149U (en) | 2017-06-21 | 2017-06-21 | A kind of automobile starting switch contact sinters melting welding automatic detection protection circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720725730.7U CN206889149U (en) | 2017-06-21 | 2017-06-21 | A kind of automobile starting switch contact sinters melting welding automatic detection protection circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206889149U true CN206889149U (en) | 2018-01-16 |
Family
ID=61315913
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720725730.7U Expired - Fee Related CN206889149U (en) | 2017-06-21 | 2017-06-21 | A kind of automobile starting switch contact sinters melting welding automatic detection protection circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206889149U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107061097A (en) * | 2017-06-21 | 2017-08-18 | 六安市同心畅能电子科技有限公司 | A kind of automobile starting switch contact sinters melting welding automatic detection protection circuit |
| CN111223715A (en) * | 2018-11-23 | 2020-06-02 | 施耐德电气工业公司 | Load switch |
-
2017
- 2017-06-21 CN CN201720725730.7U patent/CN206889149U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107061097A (en) * | 2017-06-21 | 2017-08-18 | 六安市同心畅能电子科技有限公司 | A kind of automobile starting switch contact sinters melting welding automatic detection protection circuit |
| CN111223715A (en) * | 2018-11-23 | 2020-06-02 | 施耐德电气工业公司 | Load switch |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| 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: 20180116 Termination date: 20190621 |