CN203098341U - Vehicle-mounted fan control system and vehicle-mounted fan - Google Patents
Vehicle-mounted fan control system and vehicle-mounted fan Download PDFInfo
- Publication number
- CN203098341U CN203098341U CN 201220746502 CN201220746502U CN203098341U CN 203098341 U CN203098341 U CN 203098341U CN 201220746502 CN201220746502 CN 201220746502 CN 201220746502 U CN201220746502 U CN 201220746502U CN 203098341 U CN203098341 U CN 203098341U
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- vehicle
- resistance
- switching tube
- switch pipe
- mounted fan
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Abstract
The utility model discloses a vehicle-mounted fan control system which comprises a first switch pipe, a second switch pipe, a negative temperature coefficient thermistor, a first resistor, a second resistor, a third resistor, a fourth resistor, a first diode and a second diode. Temperature around vehicle-mounted electronic equipment is sensed in real time through the negative temperature coefficient thermistor. When the temperature around the vehicle-mounted electronic equipment is increased to a certain value, a vehicle-mounted fan is started automatically. When the temperature around the vehicle-mounted electronic equipment is decreased to a certain value, vehicle-mounted equipment is closed automatically. Accordingly, the vehicle-mounted fan is automatically started or closed based on the temperature around the vehicle-mounted electronic equipment, the phenomenon that the temperature around the vehicle-mounted electronic equipment is continuously increased because the vehicle-mounted fan is not started is avoided, and the phenomenon that the vehicle-mounted fan operates for a long time because the vehicle-mounted fan cannot be closed after the vehicle-mounted electronic equipment is cooled is avoided. The utility model further discloses the vehicle-mounted fan.
Description
Technical field
The utility model belongs to the mobile unit technical field, relates in particular to a kind of control system of vehicle-mounted fan.
Background technique
Along with the sustainable development of automotive industry, increasing vehicle electronics product is applied in the vehicle, vehicle electronics product a large amount of heat that can shed when operation.In order to guarantee the stable operation of vehicle electronic device, and prolong its working life, manyly at present lower the temperature for each vehicle electronic device by vehicle-mounted fan.
Present vehicle-mounted fan all is to realize opening and closing by controller, after controller powers on, opens vehicle-mounted fan, after the controller outage, closes vehicle-mounted fan.
But there is drawback in the control mode of present vehicle-mounted fan: when in time opening vehicle-mounted fan, will cause the temperature of vehicle electronic device to continue to raise, to having a negative impact in the stable operation and working life of vehicle electronic device; When controller does not cut off the power supply, even if the temperature of vehicle electronic device reduces, also can't close vehicle-mounted fan, make its long-play, can shorten the working life of vehicle-mounted fan.
The model utility content
In view of this, the purpose of this utility model is to provide a kind of control system of vehicle-mounted fan, by the temperature around the real-time detection vehicle electronic device, controls the opening and closing of vehicle-mounted fan automatically.Simultaneously, the invention also discloses a kind of vehicle-mounted fan, can detect vehicle electronic device temperature on every side in real time, realize opening and closing automatically.
For achieving the above object, the utility model provides following technological scheme:
A kind of control system of vehicle-mounted fan comprises first switching tube, second switch pipe, negative tempperature coefficient thermistor, first resistance, second resistance, the 3rd resistance, the 4th resistance, first diode and second diode;
First end of described second switch pipe is successively by described second resistance and first resistance eutral grounding, second end of described second switch pipe is connected to bias supply, and the control end of described second switch pipe is connected to the anode of described first diode by described the 4th resistance;
The negative electrode of described first diode is connected to the power-input end of described vehicle-mounted fan;
Control end, the other end that one end of described the 3rd resistance is connected to described second switch pipe is connected to second end of described switching tube;
Second end, the other end that one end of described negative tempperature coefficient thermistor is connected to described second switch pipe is connected to the common port of described first resistance and second resistance;
First end of described first switching tube is connected to the negative electrode of described first diode, the second end ground connection of described first switching tube, and described first control end of switching tube is connected to the common port of described first resistance and second resistance;
The anode of described second diode is connected to the power-input end of described vehicle-mounted fan, power supply positive input terminal and the power supply that negative electrode is connected to described vehicle-mounted fan simultaneously.
Preferably, in the control system of above-mentioned vehicle-mounted fan, described first switching tube is a NPN type triode, described second switch pipe is the positive-negative-positive triode, first end of described first switching tube is the collector electrode of described NPN type triode, second end of described first switching tube is the emitter of described NPN type triode, described first control end of switching tube is the base stage of described NPN type triode, first end of described second switch pipe is the collector electrode of described PNP triode, second end of described second switch pipe is the emitter of described positive-negative-positive triode, and the control end of described second switch pipe is the base stage of described positive-negative-positive triode.
Preferably, in the control system of above-mentioned vehicle-mounted fan, described first switching tube is a N channel field-effect pipe, described second switch pipe is the P-channel field-effect transistor (PEFT) pipe, first end of described first switching tube is the drain electrode of described N channel field-effect pipe, second end of described first switching tube is the source electrode of described N channel field-effect pipe, described first control end of switching tube is the grid of described N channel field-effect pipe, first end of described second switch pipe is the drain electrode of described P-channel field-effect transistor (PEFT) pipe, second end of described second switch pipe is the source electrode of described P-channel field-effect transistor (PEFT) pipe, and the control end of described second switch pipe is the grid of described P-channel field-effect transistor (PEFT) pipe.
Preferably, in the control system of above-mentioned vehicle-mounted fan, described first resistance is adjustable resistance.
Preferably, in the control system of above-mentioned vehicle-mounted fan, described second resistance is adjustable resistance.
On the other hand, the invention also discloses a kind of vehicle-mounted fan, comprise fan main body and above-mentioned any one control system.
This shows, the beneficial effects of the utility model are: the control system of the disclosed vehicle-mounted fan of the utility model, by the temperature around the real-time sensing vehicle electronic device of negative tempperature coefficient thermistor, when the temperature around the vehicle electronic device rises to certain value, automatically open vehicle-mounted fan, when the temperature of vehicle electronic device is reduced to certain certain value, automatically close mobile unit, thereby realize opening or close vehicle-mounted fan automatically based on the temperature around the vehicle electronic device, avoid taking place not opening the temperature that causes vehicle electronic device and continuing situation about raising, also avoid occurring in and to close vehicle-mounted fan after the vehicle electronic device cooling and cause the long playing situation of vehicle-mounted fan owing to vehicle-mounted fan.
Description of drawings
In order to be illustrated more clearly in the utility model embodiment or technological scheme of the prior art, to do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below, apparently, accompanying drawing in describing below is embodiments more of the present utility model, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the circuit diagram of the control system of the disclosed a kind of vehicle-mounted fan of the utility model.
Embodiment
For the purpose, technological scheme and the advantage that make the utility model embodiment clearer, below in conjunction with the accompanying drawing among the utility model embodiment, technological scheme among the utility model embodiment is clearly and completely described, obviously, described embodiment is the utility model part embodiment, rather than whole embodiments.Based on the embodiment in the utility model, those of ordinary skills are not making the every other embodiment who is obtained under the creative work prerequisite, all belong to the scope of the utility model protection.
The utility model discloses a kind of control system of vehicle-mounted fan,, control the opening and closing of vehicle-mounted fan automatically by the temperature around the real-time detection vehicle electronic device.
Referring to Fig. 1, Fig. 1 is the circuit diagram of the control system of the disclosed a kind of vehicle-mounted fan of the utility model.This year, the control system of fan comprised the first switching tube Q1, second switch pipe Q2, negative tempperature coefficient thermistor RT, first resistance R 1, second resistance R 2, the 3rd resistance R 3, the 4th resistance R 4, the first diode D1 and the second diode D2.
Wherein:
By second resistance R 2 and first resistance R, 1 ground connection, second end of second switch pipe Q2 is connected to bias supply to first end of second switch pipe Q2 successively, and the control end of second switch pipe Q2 is connected to the anode of the first diode D1 by the 4th resistance R 4.
The negative electrode of the first diode D1 is connected to the power-input end of vehicle-mounted fan FAN.
Control end, the other end that one end of the 3rd resistance R 3 is connected to second switch pipe Q2 is connected to second end of switching tube.
Second end, the other end that the end of negative tempperature coefficient thermistor RT is connected to second switch pipe Q2 is connected to the common port of first resistance R 1 and second resistance R 2.Because vehicle-mounted fan is used to vehicle electronic device to lower the temperature, therefore the distance between vehicle-mounted fan and the vehicle electronic device is very little, this has determined negative tempperature coefficient thermistor RT very near apart from vehicle electronic device, and the resistance of negative tempperature coefficient thermistor RT can change with the variation of vehicle electronic device environment temperature.
First end of the first switching tube Q1 is connected to the negative electrode of the first diode D1, the second end ground connection of the first switching tube Q1, and the control end of the first switching tube Q1 is connected to the common port of first resistance R 1 and second resistance R 2.
The anode of the second diode D2 is connected to the power-input end of vehicle-mounted fan FAN, and the negative electrode of the second diode D2 is connected to power supply positive input terminal and the power supply of vehicle-mounted fan FAN simultaneously.
In the enforcement, the first switching tube Q1 and second switch pipe Q2 can adopt triode, and be concrete: the first switching tube Q1 is a NPN type triode, and second switch pipe Q2 is the positive-negative-positive triode, as shown in fig. 1.At this moment, first end of the first switching tube Q1 is the collector electrode of NPN type triode, second end of the first switching tube Q1 is the emitter of NPN type triode, the control end of the first switching tube Q1 is the base stage of NPN type triode, first end of second switch pipe Q2 is the collector electrode of PNP triode, second end of second switch pipe Q2 is the emitter of positive-negative-positive triode, and the control end of second switch pipe Q2 is the base stage of positive-negative-positive triode.
In addition, the first switching tube Q1 and second switch pipe Q2 also can adopt field effect transistor, and be concrete: the first switching tube Q1 is a N channel field-effect pipe, and second switch pipe Q2 is the P-channel field-effect transistor (PEFT) pipe.At this moment, first end of the first switching tube Q1 is the drain electrode of N channel field-effect pipe, second end of the first switching tube Q1 is the source electrode of N channel field-effect pipe, the control end of the first switching tube Q1 is the grid of N channel field-effect pipe, first end of second switch pipe Q2 is the drain electrode of P-channel field-effect transistor (PEFT) pipe, second end of second switch pipe Q2 is the source electrode of P-channel field-effect transistor (PEFT) pipe, and the control end of second switch pipe Q2 is the grid of P-channel field-effect transistor (PEFT) pipe.
Because the cost of triode is lower than the cost of field effect transistor, therefore, the first switching tube Q1 is preferably NPN type triode in implementation process, and second switch pipe Q2 is preferably the positive-negative-positive triode.
Control procedure to the control system of vehicle-mounted fan shown in Figure 1 describes below.
In the starting stage that the user opens vehicle electronic device, the temperature around the vehicle electronic device is lower, does not reach the setting temperature of opening vehicle-mounted fan FAN.At this moment, the resistance deficiency after negative tempperature coefficient thermistor RT and first resistance R, 1 dividing potential drop is so that NPN triode Q1 conducting, and this moment, vehicle-mounted fan FAN was in not opening state.
Along with the continuous service of vehicle electronic device, its heat that gives out is also more and more, and the temperature around the vehicle electronic device also rises gradually.In this process, the resistance of negative tempperature coefficient thermistor RT progressively descends along with the rising of temperature.After the resistance of negative tempperature coefficient thermistor RT drops to certain value, NPN type triode Q1 conducting, the collector voltage of NPN type triode Q1 descends, and the base voltage of positive-negative-positive triode Q2 also descends thereupon, positive-negative-positive triode Q2 conducting afterwards.After positive-negative-positive triode Q2 conducting, the forward bias voltage of base stage by second resistance R 2 is given NPN type triode Q1 makes NPN type triode Q1 enter saturation state rapidly, and vehicle-mounted fan FAN begins to rotate.
Along with the rotation of vehicle-mounted fan FAN, the temperature around the vehicle electronic device begins to descend, and the resistance of negative tempperature coefficient thermistor RT also raises along with decrease of temperature.When the resistance of negative tempperature coefficient thermistor RT was increased to certain certain value, NPN type triode Q1 withdrawed from saturation state, and the voltage of its collector electrode rises, and the base voltage of positive-negative-positive triode Q2 also rises thereupon.Afterwards, positive-negative-positive triode Q2 enters cut-off state, after NPN type triode Q1 loses forward bias voltage, enters cut-off state rapidly, and fan FAN stops operating.
Need to prove that when the first switching tube Q1 is a N channel field-effect pipe, when second switch pipe Q2 was the P-channel field-effect transistor (PEFT) pipe, control procedure was similar, no longer gives unnecessary details here.
The control system of the above-mentioned disclosed vehicle-mounted fan of the utility model, by the temperature around the real-time sensing vehicle electronic device of negative tempperature coefficient thermistor, when the temperature around the vehicle electronic device rises to certain value, automatically open vehicle-mounted fan, when the temperature of vehicle electronic device is reduced to certain certain value, automatically close mobile unit, thereby realize opening or close vehicle-mounted fan automatically based on the temperature around the vehicle electronic device, avoid taking place not opening the temperature that causes vehicle electronic device and continuing situation about raising, also avoid occurring in and to close vehicle-mounted fan after the vehicle electronic device cooling and cause the long playing situation of vehicle-mounted fan owing to vehicle-mounted fan.
In the control system of above-mentioned disclosed vehicle-mounted fan, open of the resistance decision of the setting temperature of vehicle-mounted fan FAN, and close of the resistance decision of the setting temperature of vehicle-mounted fan FAN by second resistance R 2 by first resistance R 1.In the enforcement, can determine the startup stall temperature range of vehicle-mounted fan FAN, avoid taking place vehicle-mounted fan FAN and set the problem that the transition point stall is changeed in temperature by setting the resistance of first resistance R 1 and second resistance R 2.
In the enforcement, first resistance R 1 can be set to adjustable resistance, this moment, the user can adjust the setting temperature of opening vehicle-mounted fan FAN flexibly.
Certainly, can also further second resistance R 2 be set to adjustable resistance, this moment, the user can adjust the setting temperature that closes vehicle-mounted fan FAN flexibly.
In addition, the invention also discloses a kind of vehicle-mounted fan, this vehicle-mounted fan is used to the vehicle electronic device in the automobile to lower the temperature.This vehicle-mounted fan comprises fan main body, and comprises above-mentioned disclosed any one control system of the utility model.The disclosed vehicle-mounted fan of the utility model can detect vehicle electronic device temperature on every side in real time, realizes opening and closing automatically.
Each embodiment adopts the mode of going forward one by one to describe in this specification, and what each embodiment stressed all is and other embodiments' difference that identical similar part is mutually referring to getting final product between each embodiment.
To the above-mentioned explanation of the disclosed embodiments, make related domain professional and technical personnel can realize or use the utility model.Multiple modification to these embodiments will be conspicuous concerning those skilled in the art, and defined herein General Principle can realize under the situation that does not break away from spirit or scope of the present utility model in other embodiments.Therefore, the utility model will can not be restricted to these embodiments shown in this article, but will meet and principle disclosed herein and features of novelty the wideest corresponding to scope.
Claims (6)
1. the control system of a vehicle-mounted fan is characterized in that, comprises first switching tube, second switch pipe, negative tempperature coefficient thermistor, first resistance, second resistance, the 3rd resistance, the 4th resistance, first diode and second diode;
First end of described second switch pipe is successively by described second resistance and first resistance eutral grounding, second end of described second switch pipe is connected to bias supply, and the control end of described second switch pipe is connected to the anode of described first diode by described the 4th resistance;
The negative electrode of described first diode is connected to the power-input end of described vehicle-mounted fan;
Control end, the other end that one end of described the 3rd resistance is connected to described second switch pipe is connected to second end of described switching tube;
Second end, the other end that one end of described negative tempperature coefficient thermistor is connected to described second switch pipe is connected to the common port of described first resistance and second resistance;
First end of described first switching tube is connected to the negative electrode of described first diode, the second end ground connection of described first switching tube, and described first control end of switching tube is connected to the common port of described first resistance and second resistance;
The anode of described second diode is connected to the power-input end of described vehicle-mounted fan, power supply positive input terminal and the power supply that negative electrode is connected to described vehicle-mounted fan simultaneously.
2. the control system of vehicle-mounted fan according to claim 1, it is characterized in that, described first switching tube is a NPN type triode, described second switch pipe is the positive-negative-positive triode, first end of described first switching tube is the collector electrode of described NPN type triode, second end of described first switching tube is the emitter of described NPN type triode, described first control end of switching tube is the base stage of described NPN type triode, first end of described second switch pipe is the collector electrode of described PNP triode, second end of described second switch pipe is the emitter of described positive-negative-positive triode, and the control end of described second switch pipe is the base stage of described positive-negative-positive triode.
3. the control system of vehicle-mounted fan according to claim 1, it is characterized in that, described first switching tube is a N channel field-effect pipe, described second switch pipe is the P-channel field-effect transistor (PEFT) pipe, first end of described first switching tube is the drain electrode of described N channel field-effect pipe, second end of described first switching tube is the source electrode of described N channel field-effect pipe, described first control end of switching tube is the grid of described N channel field-effect pipe, first end of described second switch pipe is the drain electrode of described P-channel field-effect transistor (PEFT) pipe, second end of described second switch pipe is the source electrode of described P-channel field-effect transistor (PEFT) pipe, and the control end of described second switch pipe is the grid of described P-channel field-effect transistor (PEFT) pipe.
4. according to the control system of claim 1,2 or 3 described vehicle-mounted fans, it is characterized in that described first resistance is adjustable resistance.
5. the control system of vehicle-mounted fan according to claim 4 is characterized in that, described second resistance is adjustable resistance.
6. a vehicle-mounted fan comprises fan main body, it is characterized in that, also comprises as each described control system in the claim 1 to 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220746502 CN203098341U (en) | 2012-12-31 | 2012-12-31 | Vehicle-mounted fan control system and vehicle-mounted fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220746502 CN203098341U (en) | 2012-12-31 | 2012-12-31 | Vehicle-mounted fan control system and vehicle-mounted fan |
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| Publication Number | Publication Date |
|---|---|
| CN203098341U true CN203098341U (en) | 2013-07-31 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201220746502 Expired - Lifetime CN203098341U (en) | 2012-12-31 | 2012-12-31 | Vehicle-mounted fan control system and vehicle-mounted fan |
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| CN (1) | CN203098341U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106739956A (en) * | 2016-11-22 | 2017-05-31 | 孙夏芬 | A kind of new-energy automobile automatic cooling system of low-coumption |
| CN110798325A (en) * | 2019-10-21 | 2020-02-14 | 普联技术有限公司 | Power supply circuit capable of automatically adjusting power supply voltage |
-
2012
- 2012-12-31 CN CN 201220746502 patent/CN203098341U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106739956A (en) * | 2016-11-22 | 2017-05-31 | 孙夏芬 | A kind of new-energy automobile automatic cooling system of low-coumption |
| CN106739956B (en) * | 2016-11-22 | 2019-05-24 | 新昌县鼎瑞科技有限公司 | A kind of automatic cooling system of new-energy automobile low-coumption |
| CN110798325A (en) * | 2019-10-21 | 2020-02-14 | 普联技术有限公司 | Power supply circuit capable of automatically adjusting power supply voltage |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130731 |
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| CX01 | Expiry of patent term |