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Control circuit of fan and used for cooling charger

A technology for controlling circuits and chargers, used in pump control, mechanical equipment, machines/engines, etc.

Inactive Publication Date: 2018-01-19
江苏里尔电子科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the problem that the fan will also run when the temperature of the radiator of the charger is not high, the present invention proposes a control circuit for the fan used to cool down the charger, which can control the switch of the fan according to the temperature of the radiator

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  • Control circuit of fan and used for cooling charger

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Embodiment Construction

[0011] In order to enable those skilled in the art to better understand the technical solutions in the present invention, the following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described The embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

[0012] Please see figure 1 , figure 1 It shows a circuit diagram of one aspect of a control circuit of a fan for cooling a charger of the present invention.

[0013] Among them, the resistance of the resistance TH402 of the temperature sensor is inversely proportional to the temperature of the charger radiator, that is...

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Abstract

The invention provides a control circuit of a fan and used for cooling a charger. The control circuit comprises a resistor of a temperature sensor, a low potential external voltage, a high potential external voltage and a comparator, wherein the resistance value of the resistor is inversely proportional to the temperature of a radiator of the charger; the low potential external voltage and the high potential external voltage are coupled with the two ends of the resistor of the temperature sensor; and the inverse input end of the comparator is coupled with the voltage of the coupling contactingpoint of the high potential external voltage and the resistor of the temperature sensor, the positive phase input end of the comparator is coupled with the reference voltage value, and the output endof the comparator is coupled with a switch of the fan.

Description

Technical field [0001] The invention relates to the field of chargers, and in particular to a control circuit of a fan used for cooling the charger. Background technique [0002] At present, since air-cooled chargers generate heat during charging, a special fan is required to cool the charger with excessive temperature. [0003] Fan control generally uses a single-chip microcomputer or DSP to turn on the fan when the charger has a current output. During the charging process, only 70% of them are in a high current charging state and need to turn on the fan. There is still 30% of the time in the low-current charging state, there is no need to turn on the fan. In this way, there are problems with fan life and energy waste. Summary of the invention [0004] In view of the problem that the fan will run when the temperature of the radiator of the charger is not high, the present invention provides a control circuit for the fan for cooling the charger, which can control the switch of th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04D27/00
Inventor 严为人胡楚友
Owner 江苏里尔电子科技有限公司
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