CN205632275U - Auto steering lamp chip over -temperature protection circuits - Google Patents
Auto steering lamp chip over -temperature protection circuits Download PDFInfo
- Publication number
- CN205632275U CN205632275U CN201620493664.0U CN201620493664U CN205632275U CN 205632275 U CN205632275 U CN 205632275U CN 201620493664 U CN201620493664 U CN 201620493664U CN 205632275 U CN205632275 U CN 205632275U
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- China
- Prior art keywords
- indicating light
- steering indicating
- lamp chip
- instrument
- light chip
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- 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.)
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Abstract
The utility model discloses an auto steering lamp chip over -temperature protection circuits, including turning to lamp chip, turn to lamp chip and pass through the circuit and is connected with the indicator, there is the self -resuming fuse at the feeding end connection who turns to lamp chip, self -resuming fuse temperature is greater than limit value self -resuming fuse automatic disconnection, and self -resuming fuse temperature is less than limit value self -resuming fuse to be resumeed to switch on, turns to the lamp chip recovering of supplying power. Turning to lamp chip and still being connected with ECU through diagnostic circuit, ECU is connected with the instrument electricity, and ECU passes through diagnostic circuit measuring current, judges that whether turn to lamp chip works, with information transfer to instrument, carries out corresponding demonstration in the instrument. The utility model discloses can avoid turning to lamp chip damaged because of overheated leading to.
Description
Technical field
This utility model relates to a kind of turn signal chip overheating protection circuit.
Background technology
At present, owing to the frequency of steering indicating light work is higher, and it flashes with fixed frequency, causes steering indicating light chip caloric value bigger.If in an environment of high temperature the working time longer after, the easy persistent fever of this chip, if do not adopted an effective measure, steering indicating light chip easily because of cross heat-induced damage, the most then whole controller may be caused to catch fire, affect vehicle safety.
Summary of the invention
The purpose of this utility model is to provide a kind of turn signal chip overheating protection circuit, and it is it can be avoided that steering indicating light chip causes because of overheated damaging.
Turn signal chip overheating protection circuit described in the utility model; including steering indicating light chip; steering indicating light chip is connected with steering indicating light by circuit; feeder ear at steering indicating light chip connects resettable fuse; resettable fuse temperature disconnects automatically more than limit value resettable fuse; resettable fuse temperature recovers conducting less than limit value resettable fuse, and steering indicating light chip power supply recovers.Steering indicating light chip is connected with ECU also by diagnostic circuit, and ECU electrically connects with instrument, and ECU detects electric current by diagnostic circuit, it is judged that whether steering indicating light chip works, and transmits information to instrument, shows accordingly in instrument.
Turn signal chip overheating protection circuit described in the utility model, feeder ear at steering indicating light chip connects resettable fuse, when steering indicating light chip abnormal heating, when temperature reaches the peak set, resettable fuse disconnects, thus avoid steering indicating light chip and cause because of overheated damaging, after steering indicating light chip quits work, heat distributes, self-recoverage insurance recovers normal, circuit recovers normal, ECU detects electric current by diagnostic circuit, judge whether steering indicating light chip works, transmit information to instrument, instrument shows, driver carries out corresponding operating according to the content of display in instrument.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model；
Fig. 2 is workflow diagram of the present utility model.
Detailed description of the invention
In order to the technical solution of the utility model is explained further, come that the utility model is elaborated below in conjunction with the accompanying drawings.
See shown in Fig. 1 and Fig. 2; this turn signal chip overheating protection circuit; including steering indicating light chip 2; steering indicating light chip 2 is connected with steering indicating light 5 by circuit; feeder ear at steering indicating light chip 2 connects resettable fuse 1; resettable fuse 1 temperature disconnects automatically more than limit value resettable fuse 1, and resettable fuse 1 temperature recovers conducting less than limit value resettable fuse 1, and steering indicating light chip power supply recovers.Steering indicating light chip 2 is connected with ECU by diagnostic circuit, and ECU electrically connects with instrument 4, and ECU detects electric current by diagnostic circuit, it is judged that whether steering indicating light chip 2 works, and transmits information to instrument 4, shows in instrument, instructs driver to carry out corresponding operating.
In the present embodiment, the model of steering indicating light chip 2 is 7030, it increases a resettable fuse 1 at power input portion, operationally, its internal meeting persistent fever, in hot environment for steering indicating light chip 2, heat is difficult to distribute, thus cause steering indicating light chip 2 to damage, the most then whole controller may be caused to catch fire, affect vehicle safety.There is resettable fuse 1 owing to increasing, when steering indicating light chip 2 can cut off steering indicating light chip 2 timely power at hot environment operation duration adstante febre, self-recoverage resistance, thus play protection steering indicating light chip 2 not by the effect of high temperature failure.After resettable fuse disconnects, ECU 3 carries out current detecting by diagnostic circuit, can know steering indicating light chip 2 and quit work, and is now exported by fault message and carries out pointing out user to instrument 4, now needs to close turning indicator control input.After self-recoverage resistance 1 recovers, fault message eliminates, and ECU 3 controls steering indicating light chip 2 and recovers normal, and instrument can point out user normally-open steering indicating light.Workflow is as shown in Figure 2: when after steering indicating light chip 2 abnormal heating, self-recoverage insurance disconnects, thus protects steering indicating light chip 2, and after steering indicating light chip 2 quits work, heat distributes, and self-recoverage insurance recovers normal, and circuit recovers normal.
Claims (1)
1. a turn signal chip overheating protection circuit, including steering indicating light chip (2), steering indicating light chip is connected with steering indicating light (5) by circuit, it is characterised in that:
Feeder ear at steering indicating light chip (2) connects resettable fuse (1), resettable fuse temperature disconnects automatically more than limit value resettable fuse, resettable fuse temperature recovers conducting less than limit value resettable fuse, and steering indicating light chip power supply recovers；
Steering indicating light chip (2) is also by diagnostic circuit and ECU(3) it is connected, ECU electrically connects with instrument (4), and ECU detects electric current by diagnostic circuit, it is judged that whether steering indicating light chip (2) works, and transmits information to instrument (4), shows accordingly in instrument.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620493664.0U CN205632275U (en) | 2016-05-27 | 2016-05-27 | Auto steering lamp chip over -temperature protection circuits |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620493664.0U CN205632275U (en) | 2016-05-27 | 2016-05-27 | Auto steering lamp chip over -temperature protection circuits |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205632275U true CN205632275U (en) | 2016-10-12 |
Family
ID=57052883
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620493664.0U Active CN205632275U (en) | 2016-05-27 | 2016-05-27 | Auto steering lamp chip over -temperature protection circuits |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205632275U (en) |
-
2016
- 2016-05-27 CN CN201620493664.0U patent/CN205632275U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |