JP2005082093A - Blower motor control device for vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a blower motor control device for a vehicle capable of not only blowing out cooled air or warm air into a compartment of the vehicle simply but also exhausting air in the compartment of the vehicle. <P>SOLUTION: The blower motor control device for the vehicle is provided with a blower motor rotation control means for controlling rotation of a D.C. motor device 110 for driving a blower device for blowing air into the compartment of the vehicle through an air passage having a heat exchanger for air conditioning. The blower motor rotation control means 120 is constituted so as to normally/reversely switch the rotation of the D.C. motor device 110 in response to predetermined timing. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a vehicle blower motor control device.

In a vehicle, an air conditioner, specifically, a blower device that blows air into the vehicle riding space via an air passage having an air conditioner heat exchanger, and a DC motor device (blower motor device) that drives the blower device Is provided. As the blower device is driven, cold air (cold air) or warm air (warm air, hot air) is blown out from the air outlet 520 in the vehicle riding space 1010 shown in FIG. Conventionally, various inventions characterized by the configuration of a blower motor rotation control device that controls the rotation of the DC motor device have been made (see Patent Documents 1 to 3).
JP-A-5-169963 Japanese Patent Laid-Open No. 5-201232 JP 2000-219022 A

  Incidentally, the vehicle window is normally closed during operation of the air conditioner, that is, during operation of the blower device. In this state, smoking a cigarette is not preferable when the vehicle boarding space is full of smoke and a person who does not smoke is on board.

  Also, even if the blower device is operated on a hot summer day, just after the operation, only hot air flows out, and cold air does not flow out. The inside of the boarding space was cooled.

  Here, any of the conventional blower motor rotation control devices described in the above-mentioned patent document, which can rotate only in one direction, has a problem that the inconvenience cannot be solved.

  On the other hand, the vehicle is provided with an air conditioner separately from the air conditioner, but there is also a problem that the vehicle cannot cope with the air conditioner alone.

  The present invention has been devised to solve the above problems, and the present invention can not only blow cool air or warm air into the vehicle boarding space, but also exhaust air in the vehicle boarding space. An object of the present invention is to provide a vehicle blower motor control device.

(Claim 1)
In order to achieve this object, a vehicle blower motor control device according to claim 1 is a rotation of a DC motor device that drives a blower device that blows air into the vehicle riding space through an air passage having an air conditioning heat exchanger. The blower motor rotation control means controls the rotation of the DC motor device according to a predetermined trigger.
(Claim 2)
The vehicle blower motor control device according to claim 2 is the vehicle blower motor control device according to claim 1, wherein the blower motor rotation control means has a bridge side portion of a feed line (feed line member) assembled in a bridge circuit shape. A DC motor device is provided, and switching means are provided on each non-bridge side portion of the feeder line. By switching the switching means, the direction of rotation of the DC motor device can be switched between forward and reverse. It is what.
(Claim 3)
A vehicle blower motor control device according to claim 3 is the vehicle blower motor control device according to claim 1 or 2, further comprising a cleanness measuring means for measuring a cleanness in the vehicle riding space, and a blower motor rotation control means. Is configured to reverse the direction of rotation of the DC motor device when the measured value of the cleanness measuring means is larger than a predetermined cleanness threshold (threshold value).
(Claim 4)
The vehicle blower motor control device according to claim 4 is the vehicle blower motor control device according to any one of claims 1 to 3, further comprising temperature measuring means for measuring the temperature in the vehicle boarding space, and blower motor rotation control. The means is configured to reverse the rotation direction of the DC motor device when the measured value of the temperature measuring means is larger than a predetermined temperature threshold.
(Claim 5)
The vehicle blower motor control device according to claim 5 is the vehicle blower motor control device according to any one of claims 1 to 4, wherein the blower motor rotation control means performs PWM control (pulse control) of the current flowing through the power supply line. Control means is provided, and the PWM control means changes the duty ratio based on the measured value of the cleanness measuring means or the temperature measuring means.
(Claim 6)
The vehicle blower motor control device according to claim 6 is the vehicle blower motor control device according to claim 5, wherein the PWM control means includes an intelligent power switch device having a current detection sensor and a semiconductor switching element, and the semiconductor The PWM control is performed by repeatedly switching the ON state or the OFF state of the switching element.

(Claim 1)
According to the blower motor control device for a vehicle according to claim 1, since the rotation of the DC motor device is switched between forward and reverse according to a predetermined trigger by the blower motor rotation control means, the cool air or the warm air is simply blown out into the vehicle boarding space. In addition, the air in the vehicle boarding space can be discharged.
(Claim 2)
According to the vehicle blower motor control device of the second aspect, in addition to the effect exhibited by the vehicle blower motor control device of the first aspect, the DC motor device is disposed on the bridge side portion of the feeder line assembled in a bridge circuit shape. In addition, a switching means is provided on each non-bridge side portion of the feeder line, and the switching direction of the DC motor device is switched between forward and reverse by switching the switching means. There is an effect that can be simplified.
(Claim 3)
According to the vehicle blower motor control device according to claim 3, in addition to the effect exhibited by the vehicle blower motor control device according to claim 1 or 2, when the measured value of the cleanness measuring means is larger than a predetermined cleanness threshold value. Since the rotation direction of the DC motor device is reversed by the blower motor rotation control means, there is an effect that the smoke in the vehicle riding space can be positively discharged.
(Claim 4)
According to the vehicle blower motor control device of the fourth aspect, in addition to the effect exhibited by the vehicle blower motor control device according to any one of the first to third aspects, the measured value of the temperature measuring means is larger than a predetermined temperature threshold value. Since the rotation direction of the DC motor device is reversed by the blower motor rotation control means, there is an effect that the hot air in the vehicle boarding space can be positively exhausted.
(Claim 5)
According to the vehicle blower motor control device of the fifth aspect, in addition to the effect exhibited by the vehicle blower motor control device according to any one of the first to fourth aspects, the PWM control means constituting the blower motor rotation control means provides a degree of cleanliness. Since the duty ratio is changed based on the measurement value of the measurement means or the temperature measurement means, there is an effect that exhaust processing according to the situation in the vehicle boarding space can be performed.
(Claim 6)
According to the vehicle blower motor control device of the sixth aspect, in addition to the effect exhibited by the vehicle blower motor control device according to the fifth aspect, the PWM control means is constituted by an intelligent power switch device having a current detection sensor and a semiconductor switching element. In addition, since the PWM control is performed by repeatedly switching the semiconductor switching element between the on state and the off state, the value of the current flowing through the power supply line when the rotation direction of the DC motor device is switched can be reduced. There is an effect that it is possible to ensure the durability (aging deterioration resistance) against the repetition of. In addition, there is an effect that feedback control can be executed by simultaneously detecting the current. Further, since the current detection sensor and the semiconductor switching element are integrated, there is an effect that the assembling work can be simplified.

  DESCRIPTION OF EMBODIMENTS Hereinafter, examples (examples) of preferred embodiments of the present invention will be described with reference to the accompanying drawings. Of course, since the following examples are only preferred examples of the present invention, the technical scope of the present invention is not limited to the following examples.

  FIG. 1 is a schematic configuration diagram of a vehicle blower motor control device (hereinafter simply referred to as “blower motor control device”) 100 according to an embodiment of the present invention. FIG. 2 is a schematic diagram of a vehicle 1000 in which the blower motor control device 100 is disposed. As shown in FIG. 1, the blower motor control device 100 includes a blower motor device 110, a blower motor rotation control device 120, and a power supply line 130.

  The blower motor device 110 rotates the blower device 510 and is constituted by a direct current motor. The blower motor rotation control device 120 is for controlling the rotation of the blower motor device 110, and the power supply line 130 is assembled in a bridge circuit shape for supplying power to the blower motor device 110.

  In the blower motor rotation control device 120, the blower motor device 110 is disposed on the bridge side 131 of the power supply line 130, and an intelligent power switch device (hereinafter simply referred to as “ (Referred to as “IPS”) 121, 122, 123, and 124 (herein, as prior art documents related to IPS, JP 2002-353404 A and JP 2000-312142 A). In addition, the blower motor rotation control device 120 is connected to each IPS 121, 122, 123, 124 via a signal line 126 and is an electric control system (hereinafter referred to as “ECS for convenience”). 125) and the vehicle riding space 1010. And a cleanliness sensor 140 for measuring the cleanliness.

All of the IPS, specifically, IPS ₍₁₎ 121, IPS ₍₂₎ 122, IPS ₍₃₎ 123, and IPS ₍₄₎ 124, are each a current detection sensor 121a which is a kind of current detection means, and switching means. It is comprised with the semiconductor switching element 121b which is 1 type. The current detection sensor 121a is for detecting a current value flowing through each non-bridge side portion 132 of the feeder 130, and the semiconductor switching element 121b is for switching each non-bridge side portion 132 to a connected state or a disconnected state. For example, it is comprised by semiconductor elements, such as MOSFET. As described above, since the current detection sensor 121a and the semiconductor switching element 121b are configured by an intelligent power switch device, that is, an integrated configuration, the current detection means and the switching means are connected to the feeder line 130. The work (attachment work) disposed on each non-bridge side portion 132 can be simplified.

The ECS 125 is for controlling (controlling) the vehicle blower motor control device, and includes an A / D converter, a memory, a CPU, a D / A converter, and the like (not shown). As such a process, a process of switching the on state or the off state of the semiconductor switching element 121b constituting each IPS 121, 122, 123, 124 is executed according to a predetermined trigger. Specifically, when the measured value of the cleanness sensor 140 is larger than a predetermined cleanness threshold value, the IPS ₍₁₎ that was turned on before the cleanness exceeded the threshold value via the operation signal transmission line 126a. _{) And} IPS ₍₄₎ semiconductor switching element 121b is turned off. As a result, even when hot air or smoke is filled in the vehicle boarding space 1010, the blower device 510 is reversed so that the air cooler or warm air is originally blown out through the air outlet 520 (see FIG. 10). ), And can exhaust such hot air and smoke positively.

  Further, since the switching means is constituted by the semiconductor switching element 121b, the value of the current flowing through the power supply line 130 when the rotation direction of the blower motor device 110 is switched can be reduced, and as a result, durability against repeated switching (aging degradation) Property).

  In addition, the trigger (timing) of the reverse rotation of the blower motor device 110 is set to be a case where the measured value of the cleanness sensor 140 is smaller than the predetermined temperature threshold, but may be a case where the measured value is equal to or less than the predetermined cleanness threshold. That is, the reverse rotation of the blower motor device 110 is executed based on the correlation between the measured value of the cleanness sensor 140 and the predetermined cleanness threshold value.

Next, the operation of the blower motor control apparatus 100 configured as described above (blower motor rotation control process S100) will be described with reference to FIG. As shown in FIG. 3, it waits until the measured value of the cleanness sensor 140 becomes larger than the predetermined cleanness threshold value (S1: No), and when the measured value becomes larger than the predetermined cleanness threshold value (S1: Yes). The semiconductor switching element 121b of the IPS ₍₁₎ 121 and the IPS ₍₄₎ 124 is turned off by the ECS 125 so that the blower motor device 110 is reversed (reversed), and the IPS ₍₂₎ 122 and IPS ₍₃₎ 123 are turned off. The semiconductor switching element 121b is turned on (S2). Therefore, the hot air and smoke that are filled in the vehicle boarding space 1010 can be positively discharged through the air outlet 520 originally for blowing out cool air or warm air.

After the reverse rotation of the blower motor device 110 (S2), the process of S2 is continued until the measured value of the cleanness sensor 140 becomes equal to or less than the predetermined cleanness threshold (S3: Yes). When the measured value is equal to or less than the predetermined cleanness threshold value (S3: No), the semiconductor switching element 121b of IPS ₍₂₎ 122 and IPS ₍₃₎ 123 is switched by ECS 125 so that the blower motor device 110 returns to normal rotation. On the other hand, the semiconductor switching element 121b of IPS ₍₁₎ 121 and IPS ₍₄₎ 124 is turned on (S4), and then the process S100 is terminated.

  Note that the processing of S2 corresponds to the software portion of the blower motor rotation control means described in the claims (the hardware portion corresponds to IPS 121 to 124 and ECS 125).

(Second embodiment)
Next, another embodiment (second embodiment) different from the above-described embodiment (first embodiment) will be described with reference to FIGS. In the description of the blower motor control apparatus 200 of the second embodiment, the same parts as those of the first embodiment are denoted by the same reference numerals, the description thereof is omitted, and different parts are described.

  The blower motor control device 200 is different from the blower motor control device 100 of the first embodiment in the trigger (timing) of reversal of the blower motor device 110. More specifically, as shown in FIG. 4, the blower motor control device 200 includes a temperature sensor 240 that measures the temperature in the vehicle boarding space 1010, and executes a blower motor rotation control process S <b> 200 shown in FIG. 5.

As shown in FIG. 5, when the measured value of the temperature sensor 240 is larger than the predetermined temperature threshold (S21: Yes), the blower motor device 110 is used until the measured value becomes equal to or lower than the predetermined temperature threshold (S21: No). It is designed to reverse (invert) ₍₂₎ . As with the blower motor control apparatus 100 of the first embodiment, the reverse rotation means (method) is such that the semiconductor switching element 121b of IPS ₍₁₎ 121 and IPS ₍₄₎ 124 is turned off by ECS 125, and IPS _{(2 )} 122 and IPS ₍₃₎ 123 semiconductor switching element 121b is turned on. Accordingly, even if the passenger does not press the button 127 (or does not have the button 127), when the temperature becomes high, the passenger goes through the air outlet 520 for blowing out cold air or warm air. Thus, the hot air filled in the vehicle boarding space 1010 can be positively (rapidly) exhausted.

  Here, during the heating operation mode, the measurement by the temperature sensor 240 is stopped, or even if the measurement value exceeds a predetermined temperature threshold value (even if it becomes larger than the predetermined temperature threshold value), it is ignored. Is preferred. Further, the temperature measurement of the temperature sensor 240 may be performed at the timing (timing) when the automobile cell motor is turned and the automobile engine is operated.

  In addition, the trigger (timing) of the reverse rotation of the blower motor device 110 is set to be a case where the measured value of the temperature sensor 240 is smaller than the predetermined temperature threshold, but may be a case where the measured value is equal to or lower than the predetermined temperature threshold. That is, the reverse rotation of the blower motor device 110 is executed based on the correlation between the measured value of the temperature sensor 240 and the predetermined cleanness threshold value.

(Third embodiment)
Next, with reference to FIG. 6, another embodiment (third embodiment) different from the above-described embodiments (first embodiment and second embodiment) will be described. In describing the blower motor control device 300 of the third embodiment, the same reference numerals are given to the same parts as those of the first and second embodiments in describing the blower motor control device 300 of the third embodiment. Therefore, the description thereof is omitted, and different portions will be described.

  As shown in FIG. 7, the blower motor control device 500 of the third embodiment is a combination of the blower motor control device 100 and the blower motor control device 200. That is, the blower motor control device 300 of the third embodiment includes both the cleanness sensor 140 and the temperature sensor 240. The blower motor control device 300 configured as described above executes the processing shown in FIGS. 3 and 5.

(Fourth embodiment)
Next, another embodiment (fourth embodiment) different from the above-described embodiments (first to third embodiments) will be described with reference to FIGS. 1 and 6 to 9. In describing the blower motor control apparatus of the fourth embodiment, the same parts as those in the first to third embodiments are denoted by the same reference numerals, the description thereof is omitted, and different parts are described.

  The blower motor control device of the fourth embodiment has the configuration shown in FIGS. 1 and 6 as in the third embodiment. However, when the cleanness sensor 140 exceeds a predetermined cleanness threshold or the temperature When the sensor 240 exceeds the predetermined temperature threshold, PWM control with a duty ratio of 50% is performed, and when the cleanness sensor 140 exceeds the second predetermined cleanness threshold, or the temperature sensor 240 is the second predetermined temperature threshold. Is exceeded, PWM control with a duty ratio of 70% is performed (of course, another program can be executed because the programs and data stored in the ECS 125 are different). In other words, when the cleanness is larger than the first threshold, PWM control with a small duty ratio is performed, and when the degree of cleanliness is further larger than the second threshold larger than the first threshold, PWM control is performed. The control for increasing the duty ratio is executed (see FIGS. 7 to 9).

  Here, since the PWM control is executed by switching between the connection state and the cutoff state (on / off) of the semiconductor switching element 121b, that is, the on / off switching means is constituted by the semiconductor switching means, so it is necessary even if the on / off switching is repeated. Sufficient durability (aging resistance) can be ensured. Further, since current is detected by the current detection sensor 121a, feedback control can be performed. Further, the switching means (switching means) and the current detection means are configured by IPS that originally (essentially) includes both the configuration of the semiconductor switching element 121b and the current detection sensor 121a.

  Note that the trigger (timing) of the duty ratio change start in the PWM control of the blower motor device 110 is a case where the measured value of the coolant temperature sensor 310 is higher than the second predetermined temperature threshold, but is equal to or higher than the second predetermined temperature threshold. When it becomes, it should just be made to be performed based on the correlation with the second predetermined temperature threshold value.

  The present invention has been described based on the embodiments. However, it goes without saying that the above embodiments can be variously improved and modified without departing from the gist of the present invention. These modifications are also included.

  For example, in the above-described embodiment, the blower motor control device 400 of the fourth embodiment is configured by combining the blower motor control device 300 and the blower motor control device 400, but the blower motor control device 100 and the blower motor control device 400 are different from each other. The blower motor control device 100 or 200 may be combined.

  In the above-described embodiment, the trigger (timing) for forward / reverse switching of the blower motor device 110 is determined based on the correlation between the temperature or the cleanness value and the threshold value. It goes without saying that a button may be installed and executed when this button is pressed. The same applies to the start of PWM control.

  It should be noted that, in order to avoid doubts in the interpretation of the scope of claims, the DC motor device disposed on the bridge side of the feeder line includes not only the DC motor device itself but also the motor. A driver (drive) device may be used. In addition, various processes (control) are executed when the threshold value is larger than the predetermined threshold value, but various processes are executed when the value of the cleanness or the like is equal to or larger than the predetermined threshold value. Needless to say, it is included in the technical scope.

1 is a basic block diagram (wiring diagram) of a vehicle blower motor control device according to an embodiment of the present invention (of the first embodiment). FIG. It is a block diagram of the blower motor control apparatus for vehicles which is one Example of this invention. It is a flowchart which shows the blower motor rotation control process performed with the said blower motor control apparatus. It is a block diagram of the blower motor control apparatus for vehicles of 2nd Example. It is a flowchart which shows the blower motor rotation control process performed with the blower motor control apparatus of 2nd Example. It is a block diagram of the blower motor control apparatus for vehicles of 3rd Example. It is a timing chart of operation | movement of the semiconductor switching element which comprises the blower motor control apparatus for vehicles of 4th Example. It is a flowchart which shows the blower motor rotation control process performed with the blower motor control apparatus of 4th Example. It is a flowchart which shows the blower motor rotation control process performed with the blower motor control apparatus of 4th Example. It is a figure which shows the dashboard part (especially air blower outlet) in vehicle boarding space.

Explanation of symbols

100 Vehicle blower motor control device 110 DC motor device (blower motor device)
120 Blower motor rotation control device 121 Intelligent power switch device (IPS) ₍₁₎
121a Current detection sensor 121b Semiconductor switching element 122 IPS ₍₂₎
123 IPS ₍₃₎
124 IPS ₍₄₎
125 Electric Control System (ECS)
126 Signal line 126a Operation signal transmission line 126b Current signal line 130 Feed line 131 Bridge side 132 Non-bridge side 200 Vehicle blower motor controller 210 Cooling outside air inlet temperature sensor 300 Vehicle blower motor controller 310 Coolant fluid temperature sensor 400 Blower motor control device for vehicle 510 Blower device 520 Air outlet 1000 Vehicle 1010 Vehicle riding space

Claims (6)

In a vehicle blower motor control device comprising blower motor rotation control means for controlling rotation of a DC motor device that drives a blower device that blows air into the vehicle boarding space through an air passage having an air conditioning heat exchanger,
The blower motor rotation control means for a vehicle is characterized in that the rotation of the DC motor device is switched between forward and reverse according to a predetermined trigger.   The blower motor rotation control means is configured by a DC motor device being disposed on the bridge side of the power supply line assembled in a bridge circuit shape, and a switching means being disposed on each non-bridge side of the power supply line. 2. The vehicle blower motor control device according to claim 1, wherein the direction of rotation of the DC motor device can be switched between forward and reverse by switching the switching means. It has a cleanness measuring means to measure the cleanliness in the vehicle boarding space,
The blower motor rotation control means is configured to reverse the direction of rotation of the DC motor device when the measured value of the cleanness measuring means is larger than a predetermined cleanness threshold value. The blower motor control device for vehicles described in 2. Equipped with temperature measuring means for measuring the temperature in the vehicle boarding space,
4. The blower motor rotation control means is configured to reverse the direction of rotation of the DC motor device when the measured value of the temperature measuring means is larger than a predetermined temperature threshold value. The vehicle blower motor control device according to claim 1. The blower motor rotation control means includes PWM control means for performing PWM control on the current flowing through the power supply line.
5. The vehicle blower motor control according to claim 1, wherein the PWM control unit is configured to change a duty ratio based on a measurement value of a cleanness measurement unit or a temperature measurement unit. apparatus.   The PWM control means is composed of an intelligent power switch device having a current detection sensor and a semiconductor switching element, and PWM control is performed by repeatedly switching the semiconductor switching element between an on state and an off state. 6. The vehicle blower motor control device according to claim 5, wherein

Images