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Light-emitting diode (LED) drive circuit and LED drive method for automobile starting power supply

A technology for driving LEDs and starting cars, applied in electric light sources, electroluminescent light sources, light sources, etc., can solve the problems of complex control and many devices, and achieve the effects of high safety and reliability, uniform light emission, and simple circuits

Inactive Publication Date: 2017-05-24
湖南电将军新能源有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] LED lamps are widely used. For example, in mobile power supplies, LED lamps need to be used as indicators and lighting. There are many LED drive circuit devices for automobile starting power supplies, and the control is complicated. Therefore, it is necessary to design a car starting power supply. LED driving circuit and method

Method used

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  • Light-emitting diode (LED) drive circuit and LED drive method for automobile starting power supply
  • Light-emitting diode (LED) drive circuit and LED drive method for automobile starting power supply
  • Light-emitting diode (LED) drive circuit and LED drive method for automobile starting power supply

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Embodiment 1

[0079] Such as figure 1 , a car starting power supply based on a supercapacitor, including a main control circuit, a charging input interface, a voltage stabilizing circuit, a boosting circuit, an energy storage module and an output circuit;

[0080] The charging input interface supplies power to the main control circuit through the voltage stabilizing circuit;

[0081] The charging input interface charges the energy storage module through the boost circuit; the boost circuit is controlled by the main control circuit;

[0082] The output circuit includes an output interface and a relay controlled by the main control circuit; the energy storage module is connected to the output interface through a relay;

[0083] The energy storage module is an energy storage module based on a supercapacitor.

[0084] The car starting power supply based on the supercapacitor also includes a pre-charging control switch circuit and a main charging control switching circuit; the charging input i...

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Abstract

The invention discloses a light-emitting diode (LED) drive circuit and an LED drive method for an automobile starting power supply. The LED drive circuit comprises a lighting type LED lamp (D15), a red LED indicating lamp, a green LED indicating lamp and a switching device (Q5), wherein a positive pole of the lighting type LED lamp is connected with a positive pole of a direct current (DC) power supply by a first current-limiting resistor; a negative pole of the lighting type LED lamp is in ground connection by means of the switching device; a control end of the switching device is connected with an LED control port (CTL-LED) by a resistor R11; positive poles of the red LED indicating lamp and the green LED indicating lamp are connected with the positive pole of the DC power supply by a second current-limiting resistor (R53) after being in short-circuit connection; negative poles of the red LED indicating lamp and the green LED indicating lamp are respectively connected with a red LED lamp control port (LED-R) and a green LED lamp control port (LED-G). The LED drive circuit for the automobile starting power supply is simple in circuit, fewer in needed elements and easy to control.

Description

technical field [0001] The invention particularly relates to an LED driving circuit and method for starting a power supply of an automobile. Background technique [0002] LED lamps are widely used. For example, in mobile power supplies, LED lamps need to be used as indicators and lighting. There are many LED drive circuit devices for automobile starting power supplies, and the control is complicated. Therefore, it is necessary to design a car starting power supply. LED driving circuit and method thereof. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide an LED driving circuit and method for starting a power supply of an automobile. The LED driving circuit for a starting power supply of an automobile is simple in circuit, uses few components, and is easy to control. [0004] The technical solution of the invention is as follows: [0005] An LED driving circuit for starting a car, including an illuminating LED lamp...

Claims

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Application Information

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IPC IPC(8): H05B33/08H05B44/00
CPCH05B45/00H05B45/37
Inventor 刘艳开
Owner 湖南电将军新能源有限公司
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