A power control device

A technology of regulating device and power supply, applied in the direction of regulating electrical variables, control/regulating systems, instruments, etc., can solve the problems of abnormal vehicle navigation action and continuous restart, and achieve the effect of avoiding the continuous restart of equipment

Active Publication Date: 2017-08-25
GUANGZHOU AUTOMOBILE GROUP CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the vehicle navigation judges that the voltage fluctuates near the critical working voltage, the operation of the vehicle navigation will be abnormal, and there will be continuous restarts

Method used

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Embodiment Construction

[0010] In order to make the objectives, technical solutions, and advantages of the present invention clearer, the following further describes the present invention in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, and do not limit the protection scope of the present invention.

[0011] figure 1 Shows a schematic structural diagram of the power control device of the present invention in an embodiment, such as figure 1 As shown, the power control device in this embodiment includes:

[0012] The first voltage divider circuit 101 and the second voltage divider circuit 102 connected to the power supply Vbat, the third voltage divider circuit 103 and the fourth voltage divider circuit 104 connected to the reduced power supply terminal Vperm, the first input terminal and the first The first voltage comparator 105 connected to the voltage divider circu...

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Abstract

A power supply control device comprises a first voltage division circuit, a second voltage division circuit, a third voltage division circuit, a fourth voltage division circuit, a first voltage comparator, a first feedback circuit, a second voltage comparator, a second feedback circuit and a phase inverter, wherein the first voltage division circuit and the second voltage division circuit are connected with a power supply, and the third voltage division circuit and the fourth voltage division circuit are connected with a power supply end after voltage reduction; a first input end of the first voltage comparator is connected with the first voltage division circuit, and a second input end is connected with the third voltage division circuit; the first feedback circuit is connected between an output end and the second input end of the first voltage comparator, a first input end of the second voltage comparator is connected with the second voltage division circuit, and a second input end is connected with the fourth voltage division circuit; the second feedback circuit is connected between an output end and the second input end of the second voltage comparator; an input end of the phase inverter is connected with the output end of the first voltage comparator, and an output end of the phase inverter and the output end of the second voltage comparator are connected with a power output end of the power supply control device. By means of the embodiment, the phenomenon that equipment repeatedly restarts due to fluctuation of power supply voltage at critical working points is avoided.

Description

Technical field [0001] The invention relates to the field of electronic appliances, in particular to a power control device. Background technique [0002] In the current applications of various electronic and electrical equipment, the problem of voltage jitter caused by unstable supply voltage will inevitably be involved. Taking car navigation products as an example, the power supply of car navigation products is provided by the car battery, and the battery voltage is easily affected by various weather conditions and various other equipment in the car, so its voltage often exhibits various jitters. Car navigation products generally determine whether the navigation product is working by judging the voltage of the battery. As far as car navigation products are concerned, the working voltage of car navigation products is generally 9V~~16V. The jitter of the car battery sometimes occurs near the two critical voltages (9V and 16V) of the navigation operation, and the collected voltag...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05F1/56
CPCG05F1/56
Inventor 李销冉光伟王明明梁伟强任强李嘉洁
Owner GUANGZHOU AUTOMOBILE GROUP CO LTD
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