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Power supply control circuit for vehicle electronic equipment

A technology of power control circuit and vehicle electronics, which is applied in current collectors, electric vehicles, electrical devices, etc., can solve the problems of shortening the service life of the battery, unable to guarantee the electric power, and the vehicle cannot be ignited and started normally, so as to ensure the remaining amount of electricity. and service life

Inactive Publication Date: 2011-05-18
ZHEJIANG DAHUA TECH CO LTD
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  • Claims
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AI Technical Summary

Problems solved by technology

Due to the limited electric energy stored in the battery, when the electric energy of the battery is consumed to a certain extent, the remaining electric energy cannot guarantee the electric energy required for the next vehicle start, which will cause the vehicle to fail to start normally, and the energy storage of the excessively consumed battery will be greatly reduced. battery life

Method used

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  • Power supply control circuit for vehicle electronic equipment
  • Power supply control circuit for vehicle electronic equipment

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Embodiment Construction

[0007] For vehicles with a 12V battery system, the voltage of the power system is kept between 13-15V when the generator is working, and the voltage of the battery is kept between 10-12.8V when the generator stops working. When the engine is started, the voltage of the power system will drop instantaneously to around 9V. The vehicle-mounted electronic equipment power supply control circuit sets the detection threshold of the equipment input voltage as 9V for the low voltage and 12V for the high voltage. The power supply control circuit of the on-board electronic equipment guarantees: 1) When the vehicle power supply is guaranteed, that is, when the generator is working, the input voltage of the device is greater than the high voltage threshold, and the power supply of the device can work normally; 2) When the generator stops working, When starting to consume battery power, when the input voltage of the device is lower than the low voltage threshold, the power reserve of the ba...

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Abstract

The invention discloses a power supply control circuit for the vehicle electronic equipment, comprising seven resistors R1-R7, a capacitor C1, two triodes Q1 and Q2 and two chips U1 and U2. The inventive power supply control circuit can automatically detect the voltage of the accumulator and turn one or off the power supply of the vehicle electronic equipment according to the capacity of the accumulator, has the advantages of hand-operated operation, convenience and utility, and can effectively guarantee the electricity surplus and the service life of vehicle accumulator.

Description

technical field [0001] The invention relates to a power supply control circuit, in particular to a power supply control circuit with functions of power detection automatic control and manual control, which is used in vehicle-mounted electronic equipment of vehicles with a 12V storage battery system. Background technique [0002] Currently, vehicles are powered by batteries and generators. When the car is running, the engine drives the generator to work, generating electric energy to supply power to the vehicle's electronic equipment and to charge the battery; The starting electric energy required by the vehicle. Due to the limited electric energy stored in the battery, when the electric energy of the battery is consumed to a certain extent, the remaining electric energy cannot guarantee the electric energy required for the next vehicle start, which will cause the vehicle to fail to start normally, and the energy storage of the excessively consumed battery will be greatly re...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60L1/00B60L3/00
Inventor 殷俊傅利泉张兴明
Owner ZHEJIANG DAHUA TECH CO LTD
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