CN202368388U - Vehicle body controller protection circuit - Google Patents
Vehicle body controller protection circuit Download PDFInfo
- Publication number
- CN202368388U CN202368388U CN2011205324367U CN201120532436U CN202368388U CN 202368388 U CN202368388 U CN 202368388U CN 2011205324367 U CN2011205324367 U CN 2011205324367U CN 201120532436 U CN201120532436 U CN 201120532436U CN 202368388 U CN202368388 U CN 202368388U
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- CN
- China
- Prior art keywords
- body controller
- car body
- relay
- circuit
- lamp
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- Expired - Fee Related
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Abstract
The utility model discloses a vehicle body controller protection circuit, comprising a control unit, a relay and a working unit. The control unit is connected to an input loop of the relay; the working unit is connected to an output loop of the relay; and the output loop is connected in series with a PTC (Positive Temperature Coefficient) fuse. After the PTC is used in the vehicle body controller protection circuit, the finished vehicle at a short-circuiting state is protected and the fuse does not need to be replaced; and the operation can be recovered only by clearing shirt-circuiting faults and the trouble of replacing fuses is avoided.
Description
Technical field
The utility model relates to the circuit structure of auto body controller.
Background technology
Car body controller (BCM) is strength member in the automobile; The working cell of control comprises the output that country beam, fog lamp, stoplight stop lamp, hazard lamp, loudspeaker, automatic window, windscreen wiper, storage battery are energy-conservation etc.; BCM is in the course of the work because the relation of car load wire harness and car load load might cause the output short circuit of controller under common situation; Therefore the working cell silk that can series connection insures, and short-circuit state when taking place wire fuse can burn and open circuit, must artificially change wire fuse this moment; Otherwise work unit can't continue normal operation, and this makes troubles for client's use.
The utility model content
The utility model technical matters to be solved is to realize a kind ofly can giving the protection of Body Control short circuit, after short circuit, need not to change the circuit structure of the car body controller of wire fuse simultaneously.
To achieve these goals; The technical scheme that the utility model adopts is: the car body controller protective circuit; Comprise control unit, relay and working cell; Described control unit cut-in relay input circuit, said working cell cut-in relay output loop is in series with the PTC wire fuse in the described output loop series connection.
Described working cell comprises the energy-conservation output of On/Off, loudspeaker, central controlled lock, automatic window, preceding windscreen wiper, back windscreen wiper, reversing aid system, parking assistance system, the storage battery of illumination, the illumination functions of country beam, fog lamp, backing-up lamp, stoplight stop lamp, hazard lamp, control panel and switch, daytime running lamps, Follow me home, two-way CAN, BCM gateway, based on the KWP2000 diagnosis of K-Line and CAN.
The diagnostic circuit that described PTC wire fuse is circumscribed with the record trouble number of times and is connected with car body controller.
Car body controller also with car in preset alarm unit is connected, and according to the number of stoppages output alarm signal of diagnostic circuit detection to alarm unit.
The advantage of the utility model is that the car body controller protective circuit after having used the PTC wire fuse, will be in guard mode when short circuit appears in car load, and need not to change wire fuse, can recover after only need short trouble being got rid of, and removes the trouble of changing wire fuse from.
Description of drawings
Face the content of every width of cloth accompanying drawing expression in the utility model specification sheets and the mark among the figure down and make brief description:
Fig. 1 is the system chart of car body controller;
Fig. 2 is the vehicle window system circuit diagram;
Fig. 3 is the windscreen wiper system circuit diagram;
Fig. 4 is the central controlled lock system circuit diagram;
Fig. 5 is the diagnostic circuit circuit diagram;
Fig. 6 is car load Principles of Network block diagrams;
Mark among the above-mentioned figure is: 1, relay; 2, PTC wire fuse.
The specific embodiment
Can know referring to Fig. 1,6; The car body controller protective circuit comprises control unit, relay 1 and working cell; Wherein control unit is handled by MCU and control corresponding driving power component, realizes the control to all functions and work-based logic thereof, and inserts the input circuit of corresponding relay 1; Wherein the working cell comprise the energy-conservation output of On/Off, loudspeaker, central controlled lock, automatic window, preceding windscreen wiper, back windscreen wiper, reversing aid system, parking assistance system, the storage battery of illumination, the illumination functions of country beam, fog lamp, backing-up lamp, stoplight stop lamp, hazard lamp, control panel and switch, daytime running lamps, Follow me home, two-way CAN, BCM gateway, based on the KWP2000 diagnosis of K-Line and CAN etc.; These unit insert the output loop of corresponding relay 1, thereby make the working cell according to the control unit instruction works.In relay 1 output unit of each working cell all series connection go into a PTC wire fuse 2 since PTC can be excessive at current surge, when temperature is too high circuit is shielded, during use; PTC wire fuse 2 under normal circumstances; Its resistance is very little, and loss is also very little, does not influence the circuit normal operation; But if there is overcurrent (like short circuit) to take place, its temperature build-up, its resistance sharply raises thereupon, reaches the effect of restriction electric current, avoids damaging the components and parts in the circuit.Behind trouble removal, the temperature automatic lowering of PTC wire fuse 2 returns to low resistive state again.Thereby make the working cell of inserting output loop can obtain short-circuit protection, also can after short circuit, need not to change wire fuse.
Specifically can know referring to Fig. 2,3,4; In vehicle window circuit system, windscreen wiper system circuit, central controlled lock circuit system; After car body controller received control command, pin of relay 1 input circuit was grounded, and then has the output loop conducting of PTC wire fuse 2; The pin spare of output loop produces the pressure reduction of a 12V at this moment, control motor forward or reverse.When short circuit appearred in output loop, PTC wire fuse 2 places can be in the state of a high resistance through excessive electric current after PTC wire fuse 2 detects big electric current, and the power supply VBAT of relay 1 can be cut off, and circuit is in guard mode; After exterior short trouble disappeared, the PTC at PTC wire fuse 2 places can detect no big electric current, promptly can revert to low resistive state, and it is normal that circuit recovers.
As shown in Figure 5, but the diagnostic circuit that PTC wire fuse 2 also can external record trouble number of times is provided with an alarm unit simultaneously in car; The MCU of car body controller is connected with alarm unit with diagnostic circuit, when et out of order is that the MCU of car body controller can store the number of stoppages that diagnostic circuit detects, when the number of stoppages of storage can make things convenient for automotive servicing; Updating maintenance to vehicle part; When fault reaches certain number of times (this value can be preset according to concrete parts), MCU will close this circuit, send alerting signal simultaneously to alarm unit; To remind the user in time to check whole vehicle state, avoid the generation of accident.
Combine accompanying drawing that the utility model has been carried out exemplary description above; Obviously the concrete realization of the utility model does not receive the restriction of aforesaid way; As long as adopted the method design of the utility model and the improvement of the various unsubstantialities that technical scheme is carried out; Or the design of the utility model and technical scheme are directly applied to other occasion without improving, all within the protection domain of the utility model.
Claims (4)
1. car body controller protective circuit; Comprise control unit, relay and working cell; Described control unit cut-in relay input circuit, said working cell cut-in relay output loop is characterized in that: be in series with the PTC wire fuse in the described output loop series connection.
2. car body controller protective circuit according to claim 1 is characterized in that: described working cell comprises the energy-conservation output of On/Off, loudspeaker, central controlled lock, automatic window, preceding windscreen wiper, back windscreen wiper, reversing aid system, parking assistance system, the storage battery of illumination, the illumination functions of country beam, fog lamp, backing-up lamp, stoplight stop lamp, hazard lamp, control panel and switch, daytime running lamps, Follow me home, two-way CAN, BCM gateway, based on the KWP2000 diagnosis of K-Line and CAN.
3. car body controller protective circuit according to claim 1 is characterized in that: the diagnostic circuit that described PTC wire fuse is circumscribed with the record trouble number of times and is connected with car body controller.
4. car body controller protective circuit according to claim 3 is characterized in that: car body controller also with car in preset alarm unit is connected, and according to the number of stoppages output alarm signal of diagnostic circuit detection to alarm unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205324367U CN202368388U (en) | 2011-12-19 | 2011-12-19 | Vehicle body controller protection circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205324367U CN202368388U (en) | 2011-12-19 | 2011-12-19 | Vehicle body controller protection circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202368388U true CN202368388U (en) | 2012-08-08 |
Family
ID=46592107
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205324367U Expired - Fee Related CN202368388U (en) | 2011-12-19 | 2011-12-19 | Vehicle body controller protection circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202368388U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102616190A (en) * | 2011-12-19 | 2012-08-01 | 埃泰克汽车电子(芜湖)有限公司 | Protective circuit of vehicle body controller |
| CN103335259A (en) * | 2013-07-01 | 2013-10-02 | 江苏晨阳电光源有限公司 | Intelligent combined motorcycle tail lamp |
-
2011
- 2011-12-19 CN CN2011205324367U patent/CN202368388U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102616190A (en) * | 2011-12-19 | 2012-08-01 | 埃泰克汽车电子(芜湖)有限公司 | Protective circuit of vehicle body controller |
| CN103335259A (en) * | 2013-07-01 | 2013-10-02 | 江苏晨阳电光源有限公司 | Intelligent combined motorcycle tail lamp |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120808 Termination date: 20151219 |
|
| EXPY | Termination of patent right or utility model |