CN108575008B - Control circuit of automotive integrated LED lights - Google Patents
Control circuit of automotive integrated LED lights Download PDFInfo
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- CN108575008B CN108575008B CN201710187892.4A CN201710187892A CN108575008B CN 108575008 B CN108575008 B CN 108575008B CN 201710187892 A CN201710187892 A CN 201710187892A CN 108575008 B CN108575008 B CN 108575008B
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- 238000005286 illumination Methods 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000005457 optimization Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
Classifications
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
- H05B45/50—Circuit arrangements for operating light-emitting diodes [LED] responsive to malfunctions or undesirable behaviour of LEDs; responsive to LED life; Protective circuits
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- Circuit Arrangement For Electric Light Sources In General (AREA)
Abstract
本发明涉及汽车的LED集成灯技术领域，尤其涉及一种汽车集成LED灯的控制电路，包括MOS管M1、MOS管M2、三极管Q1、三极管Q2、三极管Q3、二极管D1和二极管D2。正常工作情况下，MOS管均处于导通状态，所有的LED灯泡全部与电池连接；当其中的一个LED灯泡损坏不进行工作时，三极管Q3导通，MOS管处于非工作状态，LED灯泡无法与电池的负极连接，所有的LED灯泡无法点亮，同时，三极管Q3将信号提供给BCM，提醒车主车灯出现故障。
The present invention relates to the technical field of automotive LED integrated lamps, and in particular to a control circuit of an automotive integrated LED lamp, comprising a MOS tube M1, a MOS tube M2, a triode Q1, a triode Q2, a triode Q3, a diode D1 and a diode D2. Under normal working conditions, the MOS tubes are all in a conducting state, and all LED bulbs are connected to a battery; when one of the LED bulbs is damaged and does not work, the triode Q3 is turned on, the MOS tube is in a non-working state, the LED bulb cannot be connected to the negative pole of the battery, and all LED bulbs cannot be lit. At the same time, the triode Q3 provides a signal to a BCM to remind the owner that the lamp is faulty.
Description
Technical Field
The invention relates to the technical field of LED integrated lamps of automobiles, in particular to a control circuit of an automobile integrated LED lamp.
Background
The LED has the advantages of high efficiency, low energy consumption, green and environment protection, and the like, and is widely applied to the fields of automobile illumination, civil illumination industry and the like.
In consideration of safety performance and installation structure, more and more automobile lamps adopt LEDs, the design requirement of automobile products is strict, and particularly, the LED lamps are arranged on the lamps related to the safety performance, so that when a plurality of LED light sources are used for design, 1 LED is damaged, and automobile owners need to replace automobile lamps in order to meet the requirements of automobile driving regulations and the safety performance, but the price is high. In order to meet the requirements of automobile regulations and optical requirements, the matching relation of the integrated LED bulbs in the lamp is processed, and the matching relation becomes a difficulty to be considered and broken through by automobile lamp design manufacturers. When a plurality of LED integrated bulbs are adopted, when one bulb is damaged and can not be lighted, other bulbs still work, but a vehicle owner can not notice the failure of the lamp usually, so that inconvenience is brought to the vehicle owner in the driving process.
If the two integrated bulbs of the LED lamps A and B are connected in parallel to work together, when the lamp A is damaged, the lamp B can still continue to work, a vehicle owner can not notice the failure of the lamp, and particularly for the rear lamp, potential safety hazards exist in the driving process. Therefore, it is necessary to provide a mechanism that when one of the LED lamps is damaged, the a lamp and the B lamp cannot work, and the mechanism can be provided for a Body Controller (BCM) to detect, so as to remind the vehicle owner of timely change and improve the safety performance.
Disclosure of Invention
The invention aims to solve the technical problem of providing a control circuit of an automobile integrated LED lamp, so that an automobile owner timely notices the failure of the lamp and the driving safety is improved.
In order to achieve the aim of the invention, the control circuit of the automobile integrated LED lamp comprises an MOS tube M1, an MOS tube M2, a triode Q1, a triode Q2, a triode Q3, a diode D1 and a diode D2, wherein the anode of the LED1 and the anode of the LED2 are connected with the anode of a battery, the cathode of the LED1 is connected with the base of the triode Q1, the cathode of the LED2 is connected with the base of the triode Q2, the collector of the triode Q1, the anode of the diode D1, the collector of the triode Q2 and the anode of the diode D2 are connected with the anode of the battery, the cathode of the diode D1 and the anode of the diode D2 are connected with the base of the triode Q3, the collector of the triode Q3 is connected with the grid of the MOS tube M1 and the grid of the MOS tube M2 respectively, the source of the MOS tube M1 and the source of the MOS tube M2 are grounded, the grid of the MOS tube M1 is connected with the anode of the battery, and the drain of the MOS tube M1 is connected with the base of the MOS tube Q2.
As an optimized scheme of the invention, the triode Q3 is connected with a vehicle body controller, and the vehicle body controller receives the on or off signal of the triode Q3.
As an optimization scheme of the invention, the control circuit of the automobile integrated LED lamp further comprises a resistor R0, a resistor R1 and a resistor R2, wherein one end of the resistor R0 is connected with the positive electrode of the battery, the other end of the resistor R0 is connected with the grid electrode of the MOS tube M1, one end of the resistor R1 is connected with the positive electrode of the battery, the other end of the resistor R1 is connected with the collector electrode of the triode Q1, one end of the resistor R2 is connected with the positive electrode of the battery, and the other end of the resistor R2 is connected with the collector electrode of the triode Q2.
As an optimization scheme of the invention, the control circuit of the automobile integrated LED lamp further comprises a diode D3 and a diode D4, wherein the positive electrode of the diode D3 is connected with the negative electrode of the LED1, the negative electrode of the diode D3 is connected with the base electrode of the triode Q1, the positive electrode of the diode D4 is connected with the negative electrode of the LED2, and the negative electrode of the diode D4 is connected with the base electrode of the triode Q2.
The invention has the positive effects that 1) when one LED bulb fails, the other LED bulbs cannot be lightened, so that a vehicle owner can more easily notice the failure of the lamp, and meanwhile, the failure is reminded through the BCM, so that the vehicle owner can timely change the failure, and the driving safety is improved;
2) The circuit has simple structure and low cost, and is suitable for popularization and application.
Drawings
The invention will be described in further detail with reference to the drawings and the detailed description.
Fig. 1 is a circuit diagram of the present invention.
Detailed Description
As shown in fig. 1, the invention discloses a control circuit of an automobile integrated LED lamp, which comprises an MOS tube M1, an MOS tube M2, a triode Q1, a triode Q2, a triode Q3, a diode D1 and a diode D2, wherein the anode of the LED1 and the anode of the LED2 are connected with the anode of a battery, the cathode of the LED1 is connected with the base of the triode Q1, the cathode of the LED2 is connected with the base of the triode Q2, the collector of the triode Q1, the anode of the diode D1, the collector of the triode Q2 and the anode of the diode D2 are connected with the anode of the battery, the cathode of the diode D1 and the cathode of the diode D2 are connected with the base of the triode Q3, the collector of the triode Q3 is connected with the grid of the MOS tube M1 and the grid of the MOS tube M2 respectively, the source of the MOS tube M1 and the source of the MOS tube M2 are grounded, the grid of the MOS tube M1 is connected with the anode of the battery, the drain of the MOS tube M1 is connected with the base of the MOS tube Q1, and the drain of the MOS tube M2 is connected with the base of the MOS tube Q2.
The triode Q3 is connected with a vehicle body controller, and the vehicle body controller receives an on or off signal of the triode Q3.
The control circuit of the automobile integrated LED lamp further comprises a resistor R0, a resistor R1 and a resistor R2, wherein one end of the resistor R0 is connected with the positive electrode of the battery, the other end of the resistor R0 is connected with the grid electrode of the MOS tube M1, one end of the resistor R1 is connected with the positive electrode of the battery, the other end of the resistor R1 is connected with the collector electrode of the triode Q1, one end of the resistor R2 is connected with the positive electrode of the battery, and the other end of the resistor R2 is connected with the collector electrode of the triode Q2.
The control circuit of the automobile integrated LED lamp further comprises a diode D3 and a diode D4, wherein the positive electrode of the diode D3 is connected with the negative electrode of the LED1, the negative electrode of the diode D3 is connected with the base electrode of the triode Q1, the positive electrode of the diode D4 is connected with the negative electrode of the LED2, and the negative electrode of the diode D4 is connected with the base electrode of the triode Q2.
According to the invention, two integrated LED lamps are controlled through the MOS tube M1, the MOS tube M2 and the triode Q3, more integrated LED lamps can be controlled through expanding the MOS tube M1, and only an example of controlling two LED lamps, namely the LED1 and the LED2 is given. When one of the LED bulbs is damaged and does not work, the triode Q3 is conducted, the MOS tube is in a non-working state, the LED bulbs cannot be connected with the negative electrode of the battery, all the LED bulbs cannot be lightened, and meanwhile, the triode Q3 provides a signal for the BCM to remind a vehicle owner of the occurrence of faults.
As shown in fig. 1, under the normal working condition, a working voltage is provided for the grid electrode of the MOS through a resistor R0, when the Ug > Us >0, the MOS transistor M1 and the MOS transistor M2 are conducted, the current is grounded and lightened through the LED1, the LED2, the diode D3 and the diode D4, the triode Q1 is at a high level, the triode Q1 and the triode Q2 work at the moment, working current is basically shared to the LED1 and the LED2, the base electrode of the triode Q3 is not current, the triode Q1 is at a low level and cannot be conducted, the base electrode current is provided for the triode Q3 through the diode D1, the triode Q3 is conducted, and at the moment, the grid electrode of the MOS transistor M1 and the grid electrode of the MOS transistor M2 are both connected with the ground, and cannot realize a conducting state.
While the foregoing is directed to embodiments of the present invention, other and further details of the invention may be had by the present invention, it should be understood that the foregoing description is merely illustrative of the present invention and that no limitations are intended to the scope of the invention, except insofar as modifications, equivalents, improvements or modifications are within the spirit and principles of the invention.
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710187892.4A CN108575008B (en) | 2017-03-27 | 2017-03-27 | Control circuit of automotive integrated LED lights |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710187892.4A CN108575008B (en) | 2017-03-27 | 2017-03-27 | Control circuit of automotive integrated LED lights |
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| Publication Number | Publication Date |
|---|---|
| CN108575008A CN108575008A (en) | 2018-09-25 |
| CN108575008B true CN108575008B (en) | 2025-02-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710187892.4A Active CN108575008B (en) | 2017-03-27 | 2017-03-27 | Control circuit of automotive integrated LED lights |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113597056A (en) * | 2020-04-30 | 2021-11-02 | 常州星宇车灯股份有限公司 | Circuit and control method for enabling bulb and LED to work simultaneously and achieving N-1 function |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202907284U (en) * | 2012-10-22 | 2013-04-24 | 上海圣阑实业有限公司 | Automobile front turn light module |
| CN206713110U (en) * | 2017-03-27 | 2017-12-05 | 常州星宇车灯股份有限公司 | The control circuit of automobile integrated LED lamp |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ES8301154A1 (en) * | 1981-12-24 | 1982-11-16 | Mecanismos Aux Ind | System of alert of faults in the operation of lamps in automobiles. (Machine-translation by Google Translate, not legally binding) |
| CN200947684Y (en) * | 2006-09-14 | 2007-09-12 | 哈尔滨工业大学固泰电子有限责任公司 | Vehicle-mounted LED lamp control device |
| CN201689649U (en) * | 2010-08-18 | 2010-12-29 | 福建捷联电子有限公司 | Light-emitting diode driving circuit |
| CN202931616U (en) * | 2012-10-22 | 2013-05-08 | 上海晨阑光电器件有限公司 | Automobile daytime running lamp module |
| CN104742799B (en) * | 2015-03-31 | 2017-01-11 | 奇瑞汽车股份有限公司 | LED steering lamp control circuit and control method thereof |
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2017
- 2017-03-27 CN CN201710187892.4A patent/CN108575008B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202907284U (en) * | 2012-10-22 | 2013-04-24 | 上海圣阑实业有限公司 | Automobile front turn light module |
| CN206713110U (en) * | 2017-03-27 | 2017-12-05 | 常州星宇车灯股份有限公司 | The control circuit of automobile integrated LED lamp |
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| CN108575008A (en) | 2018-09-25 |
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