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Power supply circuit of automobile electronic controller

A technology of electronic controllers and automotive electronics, applied in battery circuit devices, electrical program control, current collectors, etc.

Inactive Publication Date: 2009-11-11
LIANCHUANG AUTOMOBILE ELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Existing technologies cannot meet the above needs

Method used

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  • Power supply circuit of automobile electronic controller
  • Power supply circuit of automobile electronic controller
  • Power supply circuit of automobile electronic controller

Examples

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Embodiment Construction

[0014] Such as image 3 As shown, the automotive electronic controller power supply circuit includes a constant power supply, the positive pole of the constant power supply is KL_30, and the ground is KL_31. The constant power source may be a storage battery. An ignition switch KL_15 also includes two series-connected dual-circuit relays, one end of the ignition switch KL_15 is connected to the positive pole KL_30 of the normal power supply, and the other end is connected to the input terminals of the excitation coils of the dual-circuit relay 1 and the dual-circuit relay 2. Connection, the input terminal of the controlled switch of the dual-channel relay 1 is connected to the positive pole KL_30 of the normal power supply, the output terminals of the exciting coils of the dual-channel relay 1 and dual-channel relay 2 are grounded, the output terminal of the controlled switch of the dual-channel relay 1 is connected to the dual-channel The controlled switch input terminals of...

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Abstract

The invention discloses a power supply circuit of an automobile electronic controller which comprises constant power, an ignition switch and two double-way relays. One end of the ignition switch is connected with a positive electrode of the constant power, the other end is connected with the input ends of excitation coils of a double-way relay 1 and a double-way relay 2, the input end of a controlled switch of the double-way relay 1 is connected with the positive electrode of the constant power, the output ends of the excitation coils of the double-way relay 1 and the double-way relay 2 are grounded, the output end of the controlled switch of the double-way relay 1 is connected with the input end of the controlled switch of the double-way relay 2, and the output end of the controlled switch of the double-way relay 2 supplies the power to the automobile electronic controller through a voltage regulator diode. When the ignition switch is disconnected, the electronic controller runs normally; and when the ignition switch closes, the electronic controller is in an off-electricity state.

Description

technical field [0001] The invention relates to a power supply circuit, in particular to a circuit designed to supply power to an automobile electronic controller. Background technique [0002] The ECU (Electronic Control Unit, electronic controller) on the car usually uses a battery / normal power supply, the positive pole of the power supply is KL_30, the power supply ground is powered by KL_31, or the ignition switch KL_15 is used to supply power. Such as figure 1 As shown, the constant power supply supplies power to the automotive electronic controller through the Zener diode, and the constant power supply mode is used for ECUs that always need power supply. Such as figure 2 As shown, the ignition switch power supply is suitable for the ECU that only needs to work when the ignition switch is closed and does not work when the ignition switch is turned off. [0003] With the continuous improvement of the electronic level of automobiles, the requirements for functions are...

Claims

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Application Information

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IPC IPC(8): G05B19/04H02J7/00
Inventor 吕帅单津晖罗来军
Owner LIANCHUANG AUTOMOBILE ELECTRONICS
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