Intelligent control fan driving circuit and power supply device

Abstract

The utility model discloses an intelligent control fan drive circuit and power supply device, including temperature control switch module, time control switch module and fan body, the temperature control switch module is used for detecting temperature, and when temperature is higher than temperature threshold, the temperature control switch module is conducted, the time control switch module is used for recording operation time, and the fan body is connected with the time control switch module. When the operation time reaches a time threshold value, the time control switch module is switched on, the temperature control switch module and the time control switch module are connected in parallel to form at least part of intelligent control assemblies, and the intelligent control assemblies and the fan body are connected in series to form at least part of power supply driving branches. According to the design, a controller chip does not need to be arranged, the structure is simple, cost is low, logic control is intelligent and reasonable, and use is convenient and reliable.

Description

TECHNICAL FIELD

[0001] The utility model relates to power supply heat dissipation accessories technical field, especially in kind of intelligent control fan drive circuit and power supply device. BACKGROUND

[0002] The power supply device can supply power for the whole machine equipment, and the fan body can blow and heat dissipate the power supply device, but the fan body itself also has a service life, if starting from the power supply device starting operation, the fan body is heat dissipated to the power supply device, the fan body needs long -term operation, and the service life of the fan body will be shortened.

[0003] In actual operation, whether the fan body needs to start to heat dissipate the power supply device needs to consider the operation temperature and operation aging time of the power supply device, and in the past, the temperature information and operation time information need to be judged by the controller, and the fan body is controlled to start and stop after the controller obtains the result, but the electronic element cost in the mode is higher, and the demand of the manufacturer cannot be met. UTILITY MODEL CONTENTS

[0004] The utility model aims at least solve one of the technical problems existing in the prior art. For this purpose, the utility model provides an intelligent control fan drive circuit and power supply device, which is simple in structure, low in cost, reasonable in logic control intelligence and convenient and reliable to use.

[0005] The intelligent control fan drive circuit according to the first aspect embodiment of the utility model comprises: a temperature control switch module, which is used to detect temperature, and the temperature control switch module is turned on when the temperature is higher than a temperature threshold value;A time control switch module is used to record the running time, and the time control switch module is turned on when the running time reaches a time threshold value, wherein the temperature control switch module and the time control switch module are connected in parallel to each other to form at least part of an intelligent control assembly;A fan body, the intelligent control assembly and the fan body are connected in series to form at least part of a power supply drive branch, and the power supply drive branch is used to be connected with a power supply source.

[0006] The intelligent control fan drive circuit according to the utility model embodiment has at least the following beneficial effects:

[0007] The utility model discloses a smart fan drive circuit, and the temperature control switch module can detect temperature, and the time control switch module records running time, the temperature control switch module and the time control switch module are parallelly connected with each other, and at least part of the smart component and the fan body in series constitute at least part of the power supply drive branch, and the power supply supplies power for the power supply drive branch, when any one of the two conditions that temperature is higher than temperature threshold value or running time reaches time threshold value is satisfied, any one of the temperature control switch module and the time control switch module is conducted, and the fan body can be powered on and run, the design does not need to set controller chip, and the structure is simple, the cost is lower, and the logic control intelligence is reasonable, convenient and reliable.

[0008] According to some embodiments of the utility model, the temperature control switch module includes temperature detection piece, comparison unit and first switch piece, the temperature detection piece is used for detecting temperature, the first switch piece is parallelly connected with the time control switch module, the input end of comparison unit is connected with temperature detection piece, comparison unit is used for comparing temperature and temperature threshold value, the output end of comparison unit is connected with the controlled end of first switch piece to control the on-off of first switch piece.

[0009] According to some embodiments of the utility model, the comparison unit includes comparator U603 and reference component, the first input end of comparator U603 is connected with temperature detection piece, the temperature detection piece detects temperature to form the first voltage representing temperature, the second input end of comparator U603 is connected with reference component, the reference component provides the second voltage representing temperature threshold value, and the output end of comparator U603 is connected with the controlled end of first switch piece.

[0010] According to some embodiments of the utility model, the reference component includes resistance R642, resistance R643 and resistance R644, one end of resistance R644 is connected with power supply, the other end of resistance R644 is connected with one end of resistance R642, the second input end of comparator U603 and one end of resistance R642 respectively, the other end of resistance R642 is connected with the output end of comparator U603, and the other end of resistance R642 is grounded.

[0011] According to some embodiments of the utility model, the temperature detection piece includes temperature-sensitive resistance RT603 and resistance R645, one end of resistance R645 is connected with power supply, the other end of resistance R645 is connected with one end of temperature-sensitive resistance RT603 and the first input end of comparator U603 respectively, and the other end of temperature-sensitive resistance RT603 is grounded.

[0012] According to some embodiments of the utility model, the time control switch module includes timing unit and second switch piece, the second switch piece and the first switch piece are in parallel to constitute at least partial intelligent control assembly, the timing unit is used for recording time, the output end of the timing unit is connected with the controlled end of the second switch piece to control the second switch piece to be on when recording time reaches time threshold.

[0013] According to some embodiments of the utility model, the intelligent control fan drive circuit further includes rectification filter module, the input end of the rectification filter module is connected with the power supply, and the output end of the rectification filter module is connected with the power supply drive branch.

[0014] According to the power supply device of the second aspect embodiment of the utility model, the power supply device includes power supply body and the intelligent control fan drive circuit disclosed in any of the above embodiments, the temperature control switch module is used for detecting the temperature of the power supply body, the time control switch module is connected with the power supply body to record the running time of the power supply body, and the fan body is used for blowing and heat dissipation to the power supply body.

[0015] The power supply device according to the embodiment of the utility model has at least the following beneficial effects:

[0016] The power supply device of the utility model applies the intelligent control fan drive circuit disclosed in any of the above embodiments to drive the fan body to dissipate heat to the power supply body, does not need to set the controller chip, the structure is simple, the cost is lower, the logic control intelligence is reasonable, and it is convenient and reliable to use.

[0017] Additional aspects and advantages of the utility model will be partially given in the following description, some will become obvious from the following description, or be understood by the practice of the utility model. BRIEF DESCRIPTION OF DRAWINGS

[0018] The above and / or additional aspects and advantages of the utility model will become apparent and more readily appreciated from the following description of the embodiments, with reference to the following drawings, wherein:

[0019] Figure 1 It is the principle structure block diagram of one embodiment of the power supply device of the utility model;

[0020] Figure 2 It is the circuit schematic diagram of one embodiment of the intelligent control fan drive circuit of the utility model.

[0021] Reference signs:

[0022] Temperature control switch module 100, temperature detection piece 110, comparison unit 120, first switch piece 130, reference assembly 140, time control switch module 200, fan body 300, power supply body 400, rectification filter module 500. DETAILED DESCRIPTION

[0023] The embodiments of the present application are described below in detail, examples of which are shown in the drawings, wherein the same or similar notations represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary only, for the purpose of explanation, and are not to be understood as a limitation of the present application.

[0024] In the description of the present application, it is to be understood that, in relation to the orientation description, for example, the orientation or position relationship indicated by the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is based on the orientation or position relationship shown in the drawings, and is only for the purpose of facilitating the description of the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0025] In the description of the present application, the meaning of several is one or more, the meaning of multiple is two or more, greater than, less than, more than, etc. are understood as not including the number, above, below, etc. are understood as including the number. If the first, second is described, it is only for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or the order of technical features indicated.

[0026] In the description of the present application, it should be noted that, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connection" should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication inside two elements. For ordinary skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0027] As Figure 1 , 2As shown, according to the first aspect embodiment of the utility model discloses a kind of intelligent control fan drive circuits, including temperature control switch module 100, time control switch module 200 and fan body 300, temperature control switch module 100 is used to detect temperature, and when temperature is higher than temperature threshold, the temperature control switch module 100 is turned on, time control switch module 200 is used to record running time, and when running time reaches time threshold, the time control switch module 200 is turned on, wherein the temperature control switch module 100 and the time control switch module 200 are parallel to each other to constitute at least part of intelligent control component, the intelligent control component and the fan body 300 are connected in series to constitute at least part of power supply drive branch, and the power supply drive branch is used to be connected with power supply.

[0028] Wherein, fan body 300 can be selected in conventional fan motor, fan motor drives fan blade rotation, to guide wind flow to blow and radiate heat, the design fan body 300 can be installed on power supply body 400, to blow and radiate heat to power supply body 400 when power supply body 400 temperature is higher or running aging time is longer.

[0029] The utility model discloses intelligent control fan drive circuit, temperature control switch module 100 can detect temperature, and time control switch module 200 records running time, and the temperature control switch module 100 and the time control switch module 200 are parallel to each other, and at least part of intelligent control component and fan body 300 are connected in series to constitute at least part of power supply drive branch, and power supply is powered for power supply drive branch, when temperature is higher than temperature threshold or running time reaches time threshold, any one of temperature control switch module 100 and time control switch module 200 is turned on, and fan body 300 can be powered and starts to operate, the design does not need to set controller chip, and structure is simple, and cost is lower, and logic control intelligent is reasonable, and convenient and reliable are used.

[0030] In some embodiments of the utility model, as shown in Figure 2 As shown, the temperature control switch module 100 includes a temperature detection element 110, a comparison unit 120, and a first switch element 130, the temperature detection element 110 is used to detect temperature, the first switch element 130 is connected in parallel with the time control switch module 200, the input end of the comparison unit 120 is connected with the temperature detection element 110, the comparison unit 120 is used to compare temperature and temperature threshold, and the output end of the comparison unit 120 is connected with the controlled end of the first switch element 130 to control the on-off of the first switch element 130.

[0031] Wherein, the first switch element 130 can be a triode, a MOS tube, or other semiconductor switch tube, and the output end of the comparison unit 120 outputs a level signal according to the comparison result of temperature and temperature threshold, thereby controlling the on-off of the first switch element 130.

[0032] In some embodiments of the utility model, the comparison unit 120 includes comparator U603 and reference component 140, the first input of comparison unit 120 is connected with temperature detection piece 110, temperature detection piece 110 detects temperature to form the first voltage of temperature characteristic, the second input of comparison unit 120 is connected with reference component 140, reference component 140 provides the second voltage of temperature threshold characteristic, and the output of comparison unit 120 is connected with the controlled end of first switch piece 130.

[0033] Reference component 140 provides the second voltage of temperature threshold characteristic as reference voltage for the second input of comparison unit 120, and comparison unit 120 switches output level according to the height of first voltage and second voltage, controls first switch piece 130 switching on-off.

[0034] In some embodiments of the utility model, reference component 140 includes resistance R642, resistance R643 and resistance R644, one end of resistance R644 is connected with power supply, the other end of resistance R644 is connected with the one end of resistance R642, the second input of comparison unit 603 and the one end of resistance R642 respectively, the other end of resistance R642 is connected with the output of comparison unit 603, and the other end of resistance R642 is grounded.

[0035] Specifically, power supply can form supply voltage by step-down chip, and supply voltage is applied to one end of resistance R644, so as to form reference voltage at the second input of comparison unit 603.

[0036] In some embodiments of the utility model, temperature detection piece 110 includes temperature-sensitive resistance RT603 and resistance R645, one end of resistance R645 is connected with power supply, the other end of resistance R645 is connected with the one end of temperature-sensitive resistance RT603 and the first input of comparison unit 603 respectively, and the other end of temperature-sensitive resistance RT603 is grounded.

[0037] Temperature-sensitive resistance RT603 can be PTC resistance or NTC resistance, and the change of temperature makes the resistance value of temperature-sensitive resistance RT603 change, so that the first voltage of the first input of comparison unit 603 changes, comparison unit 603 switches output level according to the height of first voltage and second voltage, and controls first switch piece 130 switching on-off.

[0038] In some embodiments of the utility model, the time control switch module 200 includes timing unit and second switch piece, the second switch piece and the first switch piece 130 are parallelly connected to constitute at least partial intelligent control assembly, the timing unit is used for recording time, the output end of the timing unit is connected with the controlled end of the second switch piece to control the second switch piece to be turned on when recording time reaches time threshold.

[0039] Timing unit can be selected in conventional timer, when detecting running time of power supply body 400, the trigger end of timing unit can be connected with the output end of power supply body 400, when power supply body 400 runs and outputs power supply voltage, timing unit is triggered to start timing, when running time reaches time threshold, timing unit controls second switch piece to switch on-off, wherein, second switch piece can be semiconductor switch tube such as triode, MOS tube.

[0040] In some embodiments of the utility model, time control switch module 200 can also adopt integrated timing switch, triggered timing by power supply body 400 starting operation, timing switch is triggered to be turned on after running time reaches time threshold.

[0041] In some embodiments of the utility model, as shown in Figure 1 、 2 Intelligent control fan drive circuit further includes rectification filter module 500, the input end of rectification filter module 500 is connected with the power supply, and the output end of rectification filter module 500 is connected with the power supply drive branch.

[0042] Wherein, rectification filter module 500 can include diode D905 and capacitor EC904, the positive pole of diode D905 is connected with power supply, and the negative pole of diode D905 is connected with one end of capacitor EC904 and power supply drive branch respectively.

[0043] According to the power supply device of the second aspect embodiment of the utility model, including power supply body 400 and the intelligent control fan drive circuit disclosed by any one of the above embodiments, the temperature control switch module 100 is used to detect the temperature of the power supply body 400, the time control switch module 200 is connected with the power supply body 400 to record the running time of the power supply body 400, and the fan body 300 is used to blow and heat dissipate the power supply body 400.

[0044] The utility model discloses a power supply device, which applies the intelligent control fan drive circuit disclosed by any one of the above embodiments to drive the fan body 300 to dissipate heat for the power supply body 400, does not need to set a controller chip, has simple structure, low cost, reasonable logic control and intelligent, and is convenient, reliable and easy to use.

[0045] Any technical features in the above-described embodiments can be combined, and for the sake of brevity, not all possible combinations are described, however, any combination of the technical features is considered to be within the scope of the present specification.

[0046] Although the embodiments of the present application have been shown and described, it should be understood by those ordinary skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the claims and their equivalents.

Claims

1. A smart control fan drive circuit, characterized in that, The application relates to a smart fan driving circuit, which comprises the following parts: a temperature control switch module for detecting temperature and being turned on when the temperature is higher than a temperature threshold value; a time control switch module for recording running time and being turned on when the running time reaches a time threshold value, wherein the temperature control switch module and the time control switch module are connected in parallel to form at least part of a smart control component; a fan body, the smart control component and the fan body being connected in series to form at least part of a power supply driving branch for being connected with a power supply source.

2. The intelligent control fan driving circuit according to claim 1, wherein: The temperature control switch module comprises a temperature detecting part for detecting temperature, a comparison unit and a first switch part, the first switch part being connected in parallel with the time control switch module, the input end of the comparison unit being connected with the temperature detecting part, the comparison unit being used for comparing the temperature with the temperature threshold value, and the output end of the comparison unit being connected with the controlled end of the first switch part to control the on-off of the first switch part.

3. The intelligent control fan driving circuit according to claim 2, characterized in that: The comparison unit comprises a comparator U603 and a reference component, the first input end of the comparator U603 being connected with the temperature detecting part, the temperature detecting part detecting temperature to form a first voltage representing the temperature, the second input end of the comparator U603 being connected with the reference component, the reference component providing a second voltage representing the temperature threshold value, and the output end of the comparator U603 being connected with the controlled end of the first switch part.

4. The intelligent control fan driving circuit according to claim 3, characterized in that: The reference component comprises resistors R642, R643 and R644, one end of the resistor R644 being connected with the power supply source, the other end of the resistor R644 being connected with one end of the resistor R642, the second input end of the comparator U603 and one end of the resistor R642 respectively, the other end of the resistor R642 being connected with the output end of the comparator U603, and the other end of the resistor R642 being grounded.

5. The intelligent control fan driving circuit according to claim 3, characterized in that: The temperature detecting part comprises a temperature-sensitive resistor RT603 and a resistor R645, one end of the resistor R645 being connected with the power supply source, the other end of the resistor R645 being connected with one end of the temperature-sensitive resistor RT603 and the first input end of the comparator U603 respectively, and the other end of the temperature-sensitive resistor RT603 being grounded.

6. The intelligent control fan driving circuit according to claim 2, characterized in that: The time control switch module comprises a timing unit and a second switch part, the second switch part and the first switch part being connected in parallel to form at least part of the smart control component, the timing unit being used for recording time, and the output end of the timing unit being connected with the controlled end of the second switch part to control the second switch part to be turned on when the recorded time reaches the time threshold value.

7. The intelligent control fan drive circuit according to claim 1, wherein, The application further comprises a rectification and filtering module, the input end of the rectification and filtering module being connected with the power supply source, and the output end of the rectification and filtering module being connected with the power supply driving branch.

8. A power supply device characterized by comprising: The application further comprises a power source body and the smart fan driving circuit according to any one of claims 1 to 7, the temperature control switch module being used for detecting the temperature of the power source body, the time control switch module being connected with the power source body to record the running time of the power source body, and the fan body being used for blowing air to dissipate heat of the power source body.

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