CN111535915A - Control circuit for cooling fan controller - Google Patents
Control circuit for cooling fan controller Download PDFInfo
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- CN111535915A CN111535915A CN202010494588.6A CN202010494588A CN111535915A CN 111535915 A CN111535915 A CN 111535915A CN 202010494588 A CN202010494588 A CN 202010494588A CN 111535915 A CN111535915 A CN 111535915A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P7/00—Controlling of coolant flow
- F01P7/02—Controlling of coolant flow the coolant being cooling-air
- F01P7/08—Controlling of coolant flow the coolant being cooling-air by cutting in or out of pumps
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Abstract
The invention relates to the field of automobile cooling fans, in particular to a control circuit for a cooling fan controller, wherein when no pulse width signal is input from a connector J1 port, triodes Q1 and Q3 are in an open circuit state, at the moment, a diode D1 does not supply power to a rear end module, if a system is in a normal power supply state to realize low power consumption, only the MCU-IO port needs to be pulled down to turn off the triode Q3, then the triode Q1 is turned off, the whole circuit stops supplying power to subsequent circuit modules, the suicide of a single chip microcomputer is realized, namely the power of the single chip microcomputer is cut off, and the low power consumption is realized.
Description
Technical Field
The invention relates to the field of automobile cooling fans, in particular to a control circuit for a cooling fan controller.
Background
The automobile engine cooling fan controller is mainly controlled through analog signals, the state of a cooling fan can be adjusted through the analog signals, and the automobile engine cooling fan controller is a huge energy waste for a vehicle-mounted storage battery, at present, the whole automobile, particularly a new energy automobile, pursues low quiescent current, the quiescent current of an electronic product reaches 20 mA-100 mA, and a plurality of devices can reach ampere-level loss; particularly, under the condition that a vehicle is flamed out, the static current is relatively large, the feeding of the vehicle-mounted storage battery is easily caused, and meanwhile, the analog signal is easily interfered by other signals, so that the state of the cooling fan is out of control.
Disclosure of Invention
The invention aims to solve the problem of high energy consumption of a vehicle-mounted storage battery, and provides a control circuit for a cooling fan controller, when no pulse width signal is input from a connector J1 port, triodes Q1 and Q3 are in an open circuit state, at the moment, a diode D1 does not supply power to a rear end module, if the system is in a normal power supply state to realize low power consumption, only the MCU-IO port needs to be pulled down to turn off the triode Q3, then the triode Q1 is turned off, the whole circuit stops supplying power to a subsequent circuit module to realize suicide of a singlechip, namely the singlechip is powered off, after suicide, the static current can be 0, and no loss exists at all, so that the low power consumption is realized.
The invention provides a control circuit for a cooling fan controller, which comprises a low-power consumption control unit,
the low-power consumption control unit is used for converting the analog signal into a pulse width signal; and stops supplying power to the subsequent circuit module when the vehicle is in a stopped state.
The low-power consumption control unit comprises a pulse width signal (PWM _ IN) input end J1, a diode D21, a double diode D3, a resistor R3, a resistor R5, a resistor R7, a resistor R8, a resistor R11, a resistor R14, a triode Q1, a triode Q3, a capacitor C1 and a capacitor C3;
the pulse width signal (PWM _ IN) input terminal J1 is connected with the negative terminal of the diode D21; the positive end of the diode D21 is respectively connected with the collector of the triode Q3 and one pin of the resistor R8;
the other pin of the resistor R8 is respectively connected with one pin of a resistor R3, one pin of a capacitor C1 and the base electrode of the triode Q1, and the other pin of the resistor R3, the other pin of the capacitor C1 and the emitter electrode of the triode Q1 are connected with a power supply signal;
a collector of the triode Q1 is respectively connected with one pin of a resistor R7 and a positive terminal of a double diode D3 through a resistor R5, the other pin of the resistor R7 is grounded, and a first negative terminal of the double diode D3 is connected with an input/output interface (MCU-IO) of a micro control unit; a second negative terminal of the double diode D3 is respectively connected with one pin of a capacitor C3 and one pin of a resistor R11, and the other pin of the capacitor C3 is grounded; the other pin of the resistor R11 is respectively connected with the base of the triode Q3 and one pin of the resistor R14, and the other pin of the resistor R14 is grounded; the emitter of the transistor Q3 is grounded.
The invention provides a control circuit for a cooling fan controller, which further comprises a diode D1, wherein the positive end of the diode D1 is connected with the collector of a triode Q1, the negative end of the diode D1 is provided with a voltage output end (V _ OUT), a power supply KL30_12V is connected with one of a resistor R3, a resistor R8 and a double diode D2 and a resistor R4, the voltage of the power supply KL30_12V is divided, and is connected with the triode Q1 after being divided, and then is connected with a diode D1 to serve as the input end of a rear circuit.
The invention provides a control circuit for a cooling fan controller, which also comprises a signal acquisition unit,
the signal acquisition unit comprises a resistor R1, a resistor R2, a resistor R4, a resistor R10, a resistor R12, a resistor R13, a resistor R15, a capacitor C2, a capacitor C4, a capacitor C5, a diode D22 and a triode Q4;
one pin of the resistor R4 is connected with a pulse width signal (PWM _ IN) input end J1, and the other pin is respectively connected with one pin of the resistor R1, one pin of the resistor R2, one pin of the capacitor C2 and the negative end of the diode D22;
the resistor R1 is connected with the resistor R2 in parallel and then is connected with a power supply signal; the other pin of the capacitor C2 is grounded, and the positive terminal of the diode D22 is connected with one pin of the resistor R10; the other pin of the resistor R10 is respectively connected with a pin of the capacitor C4, a pin of the resistor R12 and the base electrode of the triode Q4;
the emitter of the triode Q4 and the other pin of the resistor R12 are respectively connected with a power supply (VCC _ 5V); the collector of the triode Q4 is respectively connected with one pin of a resistor R15, one pin of R13 and one pin of a capacitor C15, the other pin of the capacitor C4 and the other pin of C15 are connected with the other pin of a resistor R15 and grounded, and the other pin of the R13 is connected with a signal PWM _ INPUT. The signal acquisition unit enables the single chip microcomputer to identify and acquire INPUT signals of pulse width signals, the double diode D2 is not conducted when the pulse width signals are high level, the triode Q4 is not conducted at the moment, and the signals PWM _ INPUT INPUT to the single chip microcomputer are low level signals identifiable by the single chip microcomputer; when the pulse width signal is at low level, the double diode D2 is conducted, the triode Q4 is also conducted, and the signal PWM _ INPUT INPUT to the singlechip is a high level signal which can be recognized by the singlechip;
the invention provides a control circuit for a cooling fan controller, which comprises a double diode D2;
the dual diode D2 replaces diode D21 and diode D22;
the other pin of the resistor R4 is connected with the negative terminal of a double diode D2, the first positive terminal of the double diode D2 is connected with one pin of a resistor R10, and the second positive terminal of the double diode D2 is respectively connected with the collector of the triode Q3 and one pin of a resistor R8.
The invention provides a control circuit for a cooling fan controller, which also comprises a signal feedback unit;
the signal feedback unit comprises a resistor R6, a resistor R9 and a triode Q2;
the collector of the triode Q2 is connected with the other pin of the resistor R4, the emitter of the triode Q2 is grounded, the base of the triode Q2 is respectively connected with one pin of the resistor R6 and one pin of the resistor R9, and the other pin of the resistor R6 is connected with DIAG _ OUTPUT; the other pin of the resistor R9 is connected to ground. When the single chip microcomputer detects the fault of the cooling fan system, a high level is OUTPUT through the DIAG _ OUTPUT so that the triode Q2 is opened, and therefore the external pulse width signal PWM _ IN is pulled down, and the purpose of feeding back signals is achieved.
Compared with the prior art, the embodiment of the invention has the following beneficial effects:
the embodiment of the invention provides a control circuit for a cooling fan controller, when no pulse width signal is input from a connector J1 port, triodes Q1 and Q3 are both in an open circuit state, at the moment, a diode D1 does not supply power to a rear-end module, if a system is in a normal power supply state to realize low power consumption, only an MCU-IO port needs to be pulled down to turn off the triode Q3, then the triode Q1 is turned off, the whole circuit stops supplying power to a subsequent circuit module to realize suicide of a singlechip, namely the singlechip is powered off, after suicide, the static current can be 0, and no loss exists, so that low power consumption is realized;
the analog signal is a continuous electric signal, the voltage amplitude output by the vehicle is identified as a product operation and stop instruction, the analog signal needs to be output in the vehicle operation and stop process, the circuit receiving the analog signal has power consumption of 20 mA-100 mA, the motor stops working in the vehicle stop state and consumes the energy of a storage battery, and the digital signal can achieve the uA level and achieve the purpose of reducing the power consumption;
the signal acquisition unit enables the single chip microcomputer to identify and acquire INPUT signals of pulse width signals, the double diode D2 is not conducted when the pulse width signals are high level, the triode Q4 is not conducted at the moment, and the signals PWM _ INPUT INPUT to the single chip microcomputer are low level signals identifiable by the single chip microcomputer; when the pulse width signal is at low level, the double diode D2 is conducted, the triode Q4 is also conducted, and the signal PWM _ INPUT INPUT to the singlechip is a high level signal which can be recognized by the singlechip;
when the single chip microcomputer detects the fault of the cooling fan system, the signal feedback circuit can pass through the DIAG
OUTPUT OUTPUTs high level to open the triode Q2, so as to pull down the external pulse width signal PWM _ IN and achieve the purpose of feeding back the signal;
this design does not adopt traditional analog signal to come as the control signal of control cooling fan, but adopts the pulse width signal as the control signal of input, and the method of relative analog signal control need not to consume too big energy, and pulse width signal control in this embodiment only needs very weak signal input just can realize cooling fan control circuit's operation to required energy consumption is lower, has certain benefit to the life-span of extension car storage battery, and the reaction is more nimble in actual control moreover.
Drawings
The invention is further illustrated with reference to the following figures and examples.
FIG. 1 is a system diagram of a single pin dual signal cooling fan control apparatus provided by the present invention;
FIG. 2 is a circuit diagram of a pulse width signal control unit and a fault feedback signal control unit;
FIG. 3 is a schematic diagram of a single pin dual signal cooling fan control arrangement provided by the present invention;
FIG. 4 is a schematic diagram of the connection between the microprocessor and the signal input/output terminal.
Detailed Description
The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic views illustrating only the basic structure of the present invention in a schematic manner, and thus show only the constitution related to the present invention.
Examples
Referring to fig. 1 and 4, an embodiment of the present invention provides a control circuit for a cooling fan controller, including a low power consumption control unit, where the low power consumption control unit includes a pulse width signal (PWM _ IN) input terminal J1, a diode D21, a dual diode D3, a resistor R3, a resistor R5, a resistor R7, a resistor R8, a resistor R11, a resistor R14, a transistor Q1, a transistor Q3, a capacitor C1, and a capacitor C3; referring to fig. 4, the PWM _ IN pin of the microcontroller is connected to the input terminal J1 of the pulse width signal (PWM _ IN), and the input terminal J1 of the pulse width signal (PWM _ IN) is connected to the negative terminal of the diode D21; the positive end of the diode D21 is respectively connected with the collector of the triode Q3 and one pin of the resistor R8; the other pin of the resistor R8 is respectively connected with one pin of a resistor R3, one pin of a capacitor C1 and the base electrode of the triode Q1, and the other pin of the resistor R3, the other pin of the capacitor C1 and the emitter electrode of the triode Q1 are connected with a power supply (KL30_ 12V); a collector of the triode Q1 is respectively connected with one pin of a resistor R7 and a positive terminal of a double diode D3 through a resistor R5, the other pin of the resistor R7 is grounded, and a first negative terminal of the double diode D3 is connected with an input/output interface (MCU-IO) of a micro control unit; a second negative terminal of the double diode D3 is respectively connected with one pin of a capacitor C3 and one pin of a resistor R11, and the other pin of the capacitor C3 is grounded; the other pin of the resistor R11 is respectively connected with the base of the triode Q3 and one pin of the resistor R14, and the other pin of the resistor R14 is grounded; the emitter of the transistor Q3 is grounded. Realize the low-power consumption, when connector J1 mouth no pulse width signal input, triode Q1, Q3 are all in the open circuit state, diode D1 does not have the power supply to the rear end module this moment, thereby if the system is in normal power supply state and realizes the low-power consumption and only need to make triode Q3 turn-off with pulling down of MCU-IO mouth, triode Q1 turns off afterwards, whole circuit stops to follow-up circuit module power supply, thereby realize the "suicide" of singlechip and realize the low-power consumption, thereby realize the singlechip auto-power-off promptly. The low-power consumption control unit is used for converting the analog signal into a pulse width signal; and stops supplying power to the subsequent circuit module when the vehicle is in a stopped state.
In an embodiment, please refer to fig. 2 and 4, the apparatus further includes a signal acquisition unit, where the signal acquisition unit includes a resistor R1, a resistor R2, a resistor R4, a resistor R10, a resistor R12, a resistor R13, a resistor R15, a capacitor C2, a capacitor C4, a capacitor C5, a diode D22, and a transistor Q4; one pin of the resistor R4 is connected with a pulse width signal (PWM _ IN) input end J1, and the other pin is respectively connected with one pin of the resistor R1, one pin of the resistor R2, one pin of the capacitor C2 and the negative end of the diode D22; the resistor R1 is connected with the resistor R2 in parallel and then is connected with a power supply (KL 30-12V); the other pin of the capacitor C2 is grounded, and the positive terminal of the diode D22 is connected with one pin of the resistor R10; the other pin of the resistor R10 is respectively connected with a pin of the capacitor C4, a pin of the resistor R12 and the base electrode of the triode Q4; the emitter of the triode Q4 and the other pin of the resistor R12 are respectively connected with a power supply (VCC _ 5V); the collector of the triode Q4 is respectively connected with one pin of a resistor R15, one pin of R13 and one pin of a capacitor C15, the other pin of the capacitor C4 and the other pin of C15 are connected with the other pin of a resistor R15 and grounded, and the other pin of the R13 is connected with a signal PWM _ INPUT.
The signal acquisition aims to enable the single chip microcomputer to identify and acquire INPUT signals of pulse width signals, the double diode D2 is not conducted when the pulse width signals are high level, the triode Q4 is not conducted at the moment, and the signals PWM _ INPUT INPUT into the single chip microcomputer are low level signals which can be identified by the single chip microcomputer. When the pulse width signal is at low level, the double diode D2 is conducted, the triode Q4 is also conducted at the moment, and the signal PWM _ INPUT INPUT to the singlechip is a high level signal which can be recognized by the singlechip.
In one embodiment, referring to fig. 3, a dual diode D2 is included;
the dual diode D2 replaces diode D21 and diode D22;
the other pin of the resistor R4 is connected with the negative terminal of a double diode D2, the first positive terminal of the double diode D2 is connected with one pin of a resistor R10, and the second positive terminal of the double diode D2 is respectively connected with the collector of the triode Q3 and one pin of a resistor R8. And one element is adopted to replace two elements, so that the cost is reduced, and the fault point can be found when one element is more convenient to maintain.
In one embodiment, please refer to fig. 2, 3 and 4, further comprising a signal feedback unit; the signal feedback unit comprises a resistor R6, a resistor R9 and a triode Q2; the collector of the triode Q2 is connected with the other pin of the resistor R4, the emitter of the triode Q2 is grounded, the base of the triode Q2 is respectively connected with one pin of the resistor R6 and one pin of the resistor R9, and the other pin of the resistor R6 is connected with the pin DIAG _ OUTPUT of the microcontroller; the other pin of the resistor R9 is connected to ground.
And when the single chip microcomputer detects that the cooling fan system has a fault, the signal feedback circuit OUTPUTs high level through the microcontroller DIAG _ OUTPUT so as to open the triode Q2, thereby pulling down the external pulse width signal PWM _ IN and achieving the purpose of feeding back signals.
In an embodiment, referring to fig. 3, the device further includes a diode D1, the positive terminal of the diode D1 is connected to the collector of the transistor Q1, and the negative terminal of the diode D1 is provided with a voltage output terminal (V _ OUT); the power supply KL 30-12V is connected with one diode of the resistor R3, the resistor R8 and the double diode D2 and the resistor R4, divides the voltage of the power supply KL 30-12V, is connected with the triode Q1 after voltage division, and is connected with the diode D1 to serve as an input end of a rear circuit; the resistor R5 and the resistor R7 are connected with the double diode D3 after voltage division, two diodes of the double diode D3 are respectively connected with the resistor R11 and the MCU-IO port, the resistor R11 and the resistor R14 are connected with the base of the triode Q3 after voltage division, when the triode Q3 is connected with the ground, the triode Q1 is also connected with the ground, and at the moment, interlocking is formed to always supply power to the rear-end circuit.
Fig. 1 is a circuit diagram illustrating an integrated design of a low power consumption control circuit and a signal acquisition and feedback circuit in a cooling fan controller, where the low power consumption control unit includes one of a resistor R3, a capacitor C1, a transistor Q1, a resistor D1, a resistor R5, a resistor R7, a diode D3, a resistor R8, a transistor Q3, a resistor R11, a resistor R14, a capacitor C3, and a diode D2. The low-power-consumption control unit can enable the system to enter a low-power-consumption mode according to the state of the pulse width input signal and the MCU _ IO, and can also supply power to subsequent units according to the state of the pulse width signal. The power supply KL30_12V is connected with one diode of the resistor R3, the resistor R8 and the double diode D2 and the resistor R4, divides the voltage of the power supply KL30_12V, is connected with the triode Q1 after voltage division, and is connected with the diode D1 to serve as an input end of a rear circuit. The resistor R5 and the resistor R7 are connected with the double diode D3 after voltage division, two diodes of the double diode D3 are respectively connected with the resistor R11 and the MCU-IO port, the resistor R11 and the resistor R14 are connected with the base of the triode Q3 after voltage division, when the triode Q3 is connected with the ground, the triode Q1 is also connected with the ground, and at the moment, interlocking is formed to always supply power to the rear-end circuit. When no pulse width signal is input from the J1 port of the connector, the triodes Q1 and Q3 are both in an open circuit state, at the moment, the diode D1 does not supply power to the rear-end module, if the system is in a normal power supply state to realize low power consumption, only the MCU-IO port needs to be pulled down to turn off the triode Q3, then the triode Q1 is turned off, the whole circuit stops supplying power to the subsequent circuit module, and the self-killing of the single chip microcomputer is realized, so that the low power consumption is realized.
Fig. 2 illustrates a schematic circuit diagram of the signal acquisition and feedback circuit according to the present invention, where the signal acquisition and feedback circuit includes a resistor R1, a resistor R2, a resistor R4, a capacitor C2, a resistor R6, a resistor R9, a transistor Q2, another diode of the dual diode D2, a resistor R10, a resistor R12, a transistor Q4, a resistor R13, a resistor R15, a capacitor C4, and a capacitor C5. The signal acquisition aims to enable the single chip microcomputer to identify and acquire INPUT signals of pulse width signals, the double diode D2 is not conducted when the pulse width signals are high level, the triode Q4 is not conducted at the moment, and the signals PWM _ INPUT INPUT into the single chip microcomputer are low level signals which can be identified by the single chip microcomputer.
When the pulse width signal is at low level, the double diode D2 is conducted, the triode Q4 is also conducted at the moment, and the signal PWM _ INPUT INPUT to the singlechip is a high level signal which can be recognized by the singlechip. And when the single chip microcomputer detects the fault of the cooling fan system, the signal feedback circuit OUTPUTs high level through the DIAG _ OUTPUT so as to open the triode Q2, thereby pulling down the external pulse width signal PWM _ IN and achieving the purpose of feeding back signals.
In the embodiment, a traditional analog signal is not used as a control signal for controlling the cooling fan, but a pulse width signal is used as an input control signal, so that compared with an analog signal control method, too much energy is not consumed.
In light of the foregoing description of the preferred embodiment of the present invention, many modifications and variations will be apparent to those skilled in the art without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.
Claims (6)
1. A control circuit for a cooling fan controller, characterized in that: comprises that
A low power consumption control unit for converting an analog signal into a pulse width signal; and stops supplying power to the subsequent circuit module when the vehicle is in a stopped state.
2. The control circuit for a cooling fan controller according to claim 1,
the low-power consumption control unit comprises a pulse width signal input end J1, a diode D21, a double diode D3, a resistor R3, a resistor R5, a resistor R7, a resistor R8, a resistor R11, a resistor R14, a triode Q1, a triode Q3, a capacitor C1 and a capacitor C3;
the pulse width signal input end J1 is connected with the negative end of a diode D21; the positive end of the diode D21 is respectively connected with the collector of the triode Q3 and one pin of the resistor R8;
the other pin of the resistor R8 is respectively connected with one pin of a resistor R3, one pin of a capacitor C1 and the base electrode of the triode Q1, and the other pin of the resistor R3, the other pin of the capacitor C1 and the emitter electrode of the triode Q1 are connected with a power supply signal;
a collector of the triode Q1 is respectively connected with one pin of a resistor R7 and a positive terminal of a double diode D3 through a resistor R5, the other pin of the resistor R7 is grounded, and a first negative terminal of the double diode D3 is connected with an input/output interface of the micro control unit; a second negative terminal of the double diode D3 is respectively connected with one pin of a capacitor C3 and one pin of a resistor R11, and the other pin of the capacitor C3 is grounded; the other pin of the resistor R11 is respectively connected with the base of the triode Q3 and one pin of the resistor R14, and the other pin of the resistor R14 is grounded; the emitter of the transistor Q3 is grounded.
3. The control circuit for a cooling fan controller according to claim 1,
the high-voltage LED lamp further comprises a diode D1, wherein the positive end of the diode D1 is connected with the collector of the triode Q1, and the negative end of the diode D1 is provided with a voltage output end.
4. The control circuit for a cooling fan controller according to claim 1, wherein: also comprises a signal acquisition unit which is used for acquiring signals,
the signal acquisition unit comprises a resistor R1, a resistor R2, a resistor R4, a resistor R10, a resistor R12, a resistor R13, a resistor R15, a capacitor C2, a capacitor C4, a capacitor C5, a diode D22 and a triode Q4;
one pin of the resistor R4 is connected with the pulse width signal input end J1, and the other pin of the resistor R4 is respectively connected with one pin of the resistor R1, one pin of the resistor R2, one pin of the capacitor C2 and the negative electrode end of the diode D22;
the resistor R1 is connected with the resistor R2 in parallel and then is connected with a power supply signal; the other pin of the capacitor C2 is grounded, and the positive terminal of the diode D22 is connected with one pin of the resistor R10; the other pin of the resistor R10 is respectively connected with a pin of the capacitor C4, a pin of the resistor R12 and the base electrode of the triode Q4;
the emitter of the triode Q4 and the other pin of the resistor R12 are respectively connected with a power supply; the collector of the triode Q4 is respectively connected with one pin of a resistor R15, one pin of R13 and one pin of a capacitor C15, the other pin of the capacitor C4 and the other pin of C15 are connected with the other pin of a resistor R15 and grounded, and the other pin of the R13 is connected with a signal PWM _ INPUT.
5. The control circuit for a cooling fan controller according to claim 4, comprising a double diode D2;
the dual diode D2 replaces diode D21 and diode D22;
the other pin of the resistor R4 is connected with the negative terminal of a double diode D2, the first positive terminal of the double diode D2 is connected with one pin of a resistor R10, and the second positive terminal of the double diode D2 is respectively connected with the collector of the triode Q3 and one pin of a resistor R8.
6. The control circuit for a cooling fan controller according to claim 4, further comprising a signal feedback unit;
the signal feedback unit comprises a resistor R6, a resistor R9 and a triode Q2;
the collector of the triode Q2 is connected with the other pin of the resistor R4, the emitter of the triode Q2 is grounded, the base of the triode Q2 is respectively connected with one pin of the resistor R6 and one pin of the resistor R9, and the other pin of the resistor R6 is connected with DIAG _ OUTPUT; the other pin of the resistor R9 is connected to ground.
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| US6125798A (en) * | 1997-11-26 | 2000-10-03 | Denso Corporation | Motor vehicle cooling apparatus with electric motor surge current inhibitor |
| CN2630715Y (en) * | 2003-06-24 | 2004-08-04 | 黄加玉 | Energy-saving air-conditioner and air-exhaust fan control device |
| CN1673545A (en) * | 2004-03-23 | 2005-09-28 | 台达电子工业股份有限公司 | Method for stopping fan immediately after power-off and structure thereof |
| CN2708010Y (en) * | 2004-04-01 | 2005-07-06 | 周青麟 | Fan control device |
| CN1571231A (en) * | 2004-05-11 | 2005-01-26 | 北京理工大学 | Excess temperature protector for driving motor of electric automobile |
| KR20060109039A (en) * | 2005-04-15 | 2006-10-19 | 주식회사 현대오토넷 | Pan driver circuit using temperature sensor |
| CN201355802Y (en) * | 2008-12-25 | 2009-12-02 | 上海航天汽车机电股份有限公司传感器分公司 | Drive circuit for automotive DC fan electromotor |
| CN101710694A (en) * | 2009-11-26 | 2010-05-19 | 上海大学 | Car engine cooling fan blocking/overcurrent protection system and method |
| CN102889229A (en) * | 2012-10-31 | 2013-01-23 | 无锡商业职业技术学院 | Automobile cooling fan control circuit |
| CN204003548U (en) * | 2014-07-04 | 2014-12-10 | 深圳市金威源科技股份有限公司 | A kind of fan control circuitry of temperature regulate speed |
| CN204327552U (en) * | 2014-11-25 | 2015-05-13 | 上海金脉电子科技有限公司 | Vehicle cooling fan controller |
| CN108594733A (en) * | 2018-07-18 | 2018-09-28 | 龙城电装（常州）有限公司 | Single pin multi signal cooling fan controller and its control method |
| CN209604296U (en) * | 2018-11-29 | 2019-11-08 | 广州龙辉电子科技有限公司 | A kind of the instruction control circuit and cabinet of fan cabinet |
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| CN111535915B (en) | 2021-11-26 |
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