JP7089694B2 - Vehicle temperature control device - Google Patents

Description

The present invention relates to a vehicle temperature control device.

As the temperature control device for a vehicle, those shown in Patent Document 1 and Patent Document 2 have been proposed. Patent Document 1 is provided with a seat heater that warms the seat that comes into direct contact with the occupant in order to quickly warm up the in-vehicle device while not impairing the heating feeling of the occupant, while the seat heater is ON and the engine. At the time of warming up, it is shown that the blower capacity of the blower in the air conditioner is lowered, and Patent Document 2 energizes in order to suppress an increase in power consumption due to the operation of the seat heater while the air conditioner is operating. It is disclosed that the air volume of the air conditioner is reduced as the number of seat heaters is larger.

By the way, in general, when the occupant feels cold in the vehicle interior, if the occupant raises the vehicle interior set temperature of the air conditioning means (air conditioning device), the actual temperature in the vehicle interior is raised to the vehicle interior set temperature by the air conditioning wind. The occupants can ensure thermal comfort.

Japanese Unexamined Patent Publication No. 2017-132412 Japanese Unexamined Patent Publication No. 2010-143468

However, when the engine cooling water temperature is low, when the engine is warmed up, or when the heating heater for warming the conditioned air is operated by the battery, and the battery level is low even though the outside air is low. The occupants must put up with the cold while the warm air-conditioning air is less likely to be blown out from the air-conditioning means outlet and the air-conditioning means cannot blow out the warm air-conditioning air.

The present invention has been made in view of the above circumstances, and an object of the present invention is to adjust the temperature for a vehicle, which can efficiently improve the thermal comfort of an occupant even in a situation where the air conditioning means cannot blow out warm air conditioning air. To provide the equipment.

In order to achieve the above object, the present invention has the following configurations (1) to (3) .
(1) In a vehicle temperature control device equipped with an air-conditioning means for adjusting the vehicle interior temperature using air-conditioning air.
Of the interiors, an interior temperature raising means that heats the interior that does not come into direct contact with the occupants from the inside side of the interior to raise the surface temperature of the interior.
The related factor status detecting means for detecting the related factor status related to the temperature raising operation of the air conditioning means, and the related factor status detecting means.
When it is determined that the related factor status is in a predetermined state which is lower than the normal state based on the information from the related factor status detecting means, the interior temperature raising means and the air conditioning means are controlled. A control means for warming the vehicle interior by giving priority to heating by the interior temperature raising means over heating by the air conditioning means.
Is provided,
The air-conditioning means is provided with a heating heater for using the air-conditioning air as warm air.
The related factor status detecting means is set to detect the operating factor status of the heating heater as the related factor status.
When the control means determines that the heating heater is in a difficult state to operate based on the operating factor status of the heating heater detected by the related factor status detecting means, it determines that the heating heater is in the predetermined state. Set to
The heating heater is supposed to use a battery as a heat source.
The related factor status detecting means is set to detect the remaining battery level of the battery and the outside air temperature outside the vehicle interior.
Based on the information from the related factor status detecting means, the control means determines that the battery is in the predetermined state when it is determined that the remaining battery level is equal to or less than the predetermined amount and the outside air temperature is equal to or less than the predetermined temperature. The configuration is set to .

According to this configuration, when the air-conditioning means cannot blow out warm air-conditioning air, the air-conditioning air is suppressed from being blown out, while the interior temperature raising means dissipates heat to the vehicle interior space through the interior around the occupants (convection transmission). It can generate heat) and can provide the heat radiated from the interior to the occupants. Moreover, at that time, in order to prevent the occupant from feeling the cold, it is sufficient to dissipate heat only to the surrounding environment near the occupant, so that the amount of energy required by the interior temperature raising means can be suppressed as much as possible.

Furthermore, the interior temperature raising means raises the temperature of the interior that does not come into contact with the occupant, quickly and appropriately raises the interior surface temperature, and promptly suppresses the clothing radiation loss, which is the heat transfer between the occupant's clothing and the interior. It will be. Therefore, it is possible to suppress the decrease in the occupant's clothing temperature at an early stage, and by reducing the difference between the occupant's skin temperature (human body temperature) and the occupant's clothing temperature, the space between the skin surface and the clothing is reduced. The skin loss, which is the heat transfer in, can be quickly reduced. As a result, it is possible to quickly suppress the occupant from feeling cold based on the low temperature state of the interior.

Therefore, even in a situation where the air conditioning means cannot blow out warm air conditioning air, the thermal comfort of the occupant can be efficiently improved.

Further , the air conditioning means is provided with a heating heater for using the air conditioning air as warm air, and the related factor status detecting means detects the operating factor status of the heating heater as the related factor status. When the control means determines that the heating heater is in a state in which it is difficult to operate based on the operating factor status of the heating heater detected by the related factor status detecting means, the predetermined state is set. The configuration is set so that it is determined to be in.
For this reason, even if the heating heater is in a state where it is difficult to operate, even if the occupant cannot create an air-conditioning air that feels warm, the predetermined state can be accurately detected by the operating factor status of the heating heater, and the interior is installed. By giving priority to the heating means to heat the interior, the temperature of the interior can be increased. Therefore, even if the air-conditioning means cannot blow warm air-conditioning air due to the fact that the heating heater is difficult to operate, the thermal comfort of the occupant can be improved through the heated interior. ..

Further, the heating heater is assumed to utilize the battery as a heat source, and the related factor status detecting means is set to detect the remaining battery level of the battery and the outside air temperature outside the vehicle interior, and the control thereof is performed. The means is set to determine that the battery is in the predetermined state when it is determined that the remaining battery level is equal to or less than the predetermined amount and the outside air temperature is equal to or less than the predetermined temperature based on the information from the related factor status detecting means. It is said that it is configured.
Therefore, when the heating heater uses the battery as a heat source and the remaining battery level is low and the outside air temperature is low, the heating heater becomes difficult to operate and warms the occupants. Although it is not possible to create an air-conditioned air that makes you feel, the situation is accurately judged by detecting the remaining battery level and the outside air temperature, and the interior heating means gives priority to heating the interior to heat the interior. Can be made to. Therefore, even in a situation where the air-conditioning means cannot blow out warm air-conditioning air based on the remaining battery level and the outside air temperature, the thermal comfort of the occupant can be improved through the heated interior.

Moreover, in a predetermined state, the interior heating means that consumes less energy is used, and the thermal comfort of the occupant can be efficiently improved while the battery consumption can be suppressed as much as possible. Therefore, in the case of an electric vehicle, the traveling power can be secured as much as possible.

(2) Under the configuration of (1) above,
The control means is adapted to control the rate of temperature rise by the interior temperature raising means and the rate of temperature rise by the air conditioning means with respect to the target vehicle interior temperature, and when it is determined that the state is in the predetermined state, the interior temperature rise. The temperature rise rate by the heating means is set to be higher than the temperature rising rate by the air conditioning means.
According to this configuration, in a predetermined state, the rate of temperature rise by the interior temperature raising means with respect to the target vehicle interior temperature is higher than the rate of temperature rise by the air conditioning means, and the temperature rise by the interior temperature raising means effective in the predetermined state is added. By specifically utilizing the temperature, the thermal comfort of the occupants can be efficiently improved.

(3) Under the configuration of (1) or (2) above.
The control means is configured to operate only the interior temperature raising means when it is determined that the control means is in the predetermined state.
According to this configuration, when the vehicle is in a predetermined state, the heating by the interior heating means can be centrally used, and the function can be effectively related to the improvement of the thermal comfort of the occupant.

According to the present invention, it is possible to provide a temperature control device for a vehicle that can efficiently improve the thermal comfort of an occupant even in a situation where the air conditioning means cannot blow out warm air conditioning air.

Explanatory drawing explaining the vehicle interior which concerns on 1st Embodiment. The explanatory view explaining the arrangement position and the blowing direction of the outlet of the air-conditioning air sent out from the air-conditioning apparatus in the vehicle interior which concerns on 1st Embodiment. Explanatory drawing explaining the interior structure which concerns on 1st Embodiment. Explanatory drawing explaining an example of the air-conditioning apparatus which concerns on 1st Embodiment. An explanatory diagram illustrating a situation in which radiant heat (radiant heat) is radiated from the occupant to the interior and radiated from the occupant to the interior space of the vehicle. The figure which shows how the surface temperature of an interior affects the heat energy consumption of an occupant under various car interior temperatures. The figure which shows the example of the control system which concerns on 1st Embodiment. Explanatory drawing explaining the outline of the control which concerns on 1st Embodiment. The flowchart which shows the control example which concerns on 1st Embodiment. The flowchart which shows the control example which concerns on 2nd Embodiment. The figure which shows the example of the control system which concerns on 3rd Embodiment. The flowchart which shows the control example which concerns on 3rd Embodiment. Explanatory drawing explaining an example of the air-conditioning apparatus which concerns on 3rd Embodiment.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

1 to 9 show the first embodiment. In FIGS. 1 and 2, reference numeral 1 indicates an automobile as a vehicle equipped with an internal combustion engine (engine). On the front seat side, the passenger compartment 2 of the automobile 1 has an instrument panel 3 extending over the entire length in the vehicle width direction, and left and right arranged so as to extend from both left and right sides of the instrument panel 3 to the rear of the vehicle body. It is partitioned by a door 4 (the left door is not shown). In the vehicle interior 2, a console 5 is provided so as to extend in the front-rear direction of the vehicle body at the center in the vehicle width direction, and the front end of the console 5 reaches the instrument panel 3. Therefore, the passenger compartment 2 is divided into a driver's seat space 6 and a passenger seat space 7 on the left and right with the console 5 as the center, and the driver's seat 8 is arranged in the driver's seat space 6 and the driver's seat space 6 thereof. A steering handle 9 is arranged in front of the vehicle body of the driver's seat 8 and on the rear side of the vehicle body of the instrument panel 3, and a passenger seat (not shown) is arranged in the passenger seat space 7. Of course, in this case, the driver's seat 8 and the passenger seat are composed of a seat seat 11 (seat portion) and a seat back portion 12 standing up from the rear portion of the seat seat portion 11.

As shown in FIG. 7, the automobile 1 incorporates a vehicle temperature adjusting device 13. The vehicle temperature control device 13 is provided with an interior temperature riser heater 14 as an interior temperature riser means and an air conditioner 15 as an air conditioner means to configure the temperature control device 13. The configuration of the interior temperature riser 14 and the air conditioner 15 regarding the blowing of air conditioning air is the same in the driver's seat and the passenger seat. Therefore, in the following description, only the driver's seat side configuration will be described in order to avoid duplicate explanations.

As shown in FIG. 3, the interior temperature riser 14 obtains electric power from a battery (not shown) in order to raise the surface temperature of the interior 16 (interior skin 21) in the passenger compartment 2, and the interior 16 has the power. It supplies heat. As the interior temperature riser 14, various types can be used, and in the present embodiment, as the interior temperature riser 14, the film heater 14A is used as the interior temperature riser 21 with the interior skin 21 and the heat shield 22 as shown in FIG. A structure that is laminated and sandwiched is used, and it is attached to the structural base material 23 of the interior 16 to be arranged. In this case, as the interior skin 21, a low heat capacity skin having a sufficiently thin thickness is used so that the temperature can be changed with a high response to heat input to control heat radiation, and the heat shield 22 is a heat shield material 22. A high heat shield is used to support high response temperature changes in the epidermis.

The interior temperature riser 14 having such a structure is incorporated in a region of the interior 16 that partitions the driver's seat space 6 (cabin 2) so as not to come into direct contact with the driver seated in the driver's seat 8. ing. In the present embodiment, from the viewpoint of so-called head cold foot heat, the interior temperature riser heater 14 is incorporated in the region of the interior 16 facing the lower limbs of the driver seated in the driver's seat 8, and the lower limbs of the lower limbs. It is more preferable to incorporate it in the facing area. More specifically, in the interior 16, the region in which the interior heating heater 14 is incorporated is the side wall region 17 of the console 5, the instrument panel 3 behind the steering handle 9 (front side of the vehicle body), as shown in FIG. It is set in the lower surface region 18 of the door 4 and the door panel region 19 of the door 4, which is supposed to surround the driver's lower limbs.

In addition, in FIG. 1, each area 17 to 19 of the interior 16 is shown separately from other areas, but it is for convenience to clearly grasp the existence area of each area 17 to 20 of the interior 16. , And the areas 17 to 19 of the interior 16 and the surrounding areas thereof are indistinguishable from each other in appearance.

The air conditioner 15 is incorporated inside the instrument panel 3. As shown in FIG. 4, the air conditioner 15 includes a casing 41 that forms an air passage for flowing air. An outside air introduction port 42 for introducing outside air and an inside air introduction port 43 for introducing inside air are formed on the upstream side of the casing 41 in the air flow direction as air inlets, and on the downstream side of the casing 41 in the air flow direction. Is formed with a plurality of outlets 44 to 48 including on-off valves 44a to 48a. A duct (not shown) forming an air passage is connected to each of the outlets 44 to 48, and each duct is connected to a dedicated outlet (for example, the occupant's upper body side, foot side, etc.) in the passenger compartment 2. It is connected to the one that is aimed at).

Inside the casing 41 is a switching damper 49 that switches between inside and outside air in order from the upstream side to the downstream side in the air flow direction, a blower 50 that sends air from the inlet to the outlet of the casing 41, and a heat pump. An evaporator 51 that cools the air sent out by the blower 50 and a heater core 52 as a heating heater that heats the air that has passed through the evaporator 51 are arranged between the heater core 52 and the evaporator 51. The air mix door 53 is arranged. In this case, in the heater core 52, engine cooling water for cooling the engine is used as a heat source for heating the air, and therefore, engine cooling water is circulated between the heater core 52 and the engine EG. A circulation path 54 is formed for the circulation, and a circulation pump 55 for adjusting the flow rate is interposed in the circulation path 54. Further, the air mix door 53 is supposed to adjust the ratio of the air passing through the bypass passage 56 arranged adjacent to the heater core 52 in the casing 41 and the heater core 52 by adjusting the opening degree thereof. This adjusted air is supplied as air-conditioned air into the casing 2 via the outlets 44 to 48 and the outlets. Reference numeral 24 shown in FIG. 2 is provided on the front side wall of the console 5 as one of the plurality of outlets, and the air-conditioning air is directed by the outlet 24 as shown by the arrow in FIG. It is set to be blown out toward the driver sitting on the driver's seat 8.

In such an air conditioner 15, as is known, a blower 50, an air mix door 53, a circulation pump 55, and an on-off valve 44a are used to blow out a desired (suitable for purpose) air conditioning air and air conditioning air volume into the vehicle interior. ~ 48a and the like are to be optimally controlled. Therefore, for the sake of convenience of explanation, the control of the air conditioner 15 will be collectively referred to as performing these optimum controls.

As shown in FIG. 7, the vehicle temperature control device 13 includes an electronic control unit ECU as a control means configured by using a microcomputer to control the internal temperature riser heater 14 and the air conditioner 15. Has been done. Therefore, control signals are output from the electronic control unit ECU to the internal temperature riser 14 (drive circuit) and the air conditioner 15 (drive circuit), respectively, while the sensors D1, D8, and devices are output to the electronic control unit ECU. The signal from D4 is input. D1 is a vehicle interior air temperature detection sensor that detects the vehicle interior air temperature. D8 is an engine cooling water temperature detection sensor that detects the temperature of the engine cooling water that is the heat source of the air conditioner 15. D4 is a vehicle interior set temperature input switch that sets the temperature inside the vehicle interior 2 by an input operation of a occupant (user), and the vehicle interior set temperature input switch D4 is provided on the front upper wall of the console 5. There is.

As shown in FIG. 7, the electronic control unit ECU is provided with a storage unit 38 and an output setting unit 39 in order to secure a function as a computer.

The storage unit 38 is composed of storage elements such as a ROM (Read Only Memory) and a RAM (Random Access Memory), and the storage unit 38 is necessary for controlling the operation of the internal temperature riser heater 14 and the air conditioner 15. Various programs, setting information such as coefficients α1, β1, α2, β2, warm-up completed engine cooling water temperature αT (40 degrees), which will be described later, are stored. These various programs and the like are read out by the output setting unit 39 as needed, and necessary information is appropriately stored in the storage unit 38.

The output setting unit 39 includes a CPU (Central Processing Unit), and the output setting unit 39 is provided for each internal temperature riser heater 14 and an air conditioner 15 under a program read from a storage unit 38. And outputs a predetermined control signal.

The control performed by the electronic control unit ECU reflects the points of interest that the present inventor has focused on. Therefore, first, the point of interest will be described, and then the outline of the control in which the point of interest is reflected will be described.
(1) Points of interest that the present inventor paid attention to
(i) In an automobile equipped with an internal combustion engine (engine) EG, when the engine cooling water is used as a heat source for the heater core 52 in the air conditioner 15, the engine cooling water temperature gradually changes after the engine is started, as shown in FIG. When the engine warms up (especially in the initial stage), the engine cooling water temperature is lower than after the engine warm-up is completed. It's not warm. For this reason, the occupants must put up with the cold while the engine cooling water temperature is too low to blow warm air conditioning air.

(ii) Further, in general, when the outside air temperature outside the vehicle interior is low, even if the inside of the vehicle interior 2 is heated by the air-conditioned air, it is experienced that the warmth is not quickly felt. Regarding this phenomenon, as shown in FIG. 5, when the surface temperature of the interior 16 (instrument panel 3 facing the occupant P in FIG. 5) decreases as the outside air temperature decreases, the occupant P wears clothes. Since the difference between the temperature of Pcl (clothing temperature of occupant P> surface temperature of interior 16) and the surface temperature of interior 16 becomes large, clothing radiation loss due to heat transfer between occupant P's clothing Pcl and interior 16 increases. It is believed that the temperature of the occupant's clothing decreases due to the loss of clothing radiation, and as a result, the heat transfer of the occupant P from the human body (skin) Psk to the clothing Pcl is promoted.

FIG. 6 confirms this. FIG. 6 shows the result of the present inventor's evaluation of thermal comfort by human body exergy loss in order to perform vehicle interior thermal control based on a human thermal mechanism. In FIG. 6, the human body excelgie loss is an energy loss caused by heat transfer of heat energy in the deep part of the human body produced in the process of consuming food ingested by the human body from the deep part of the human body to the surface of the human body and eventually to the periphery of the human body. The human body energy loss can be specified by the definition consisting of four elements: core loss, skin loss, clothing heat conduction loss, and clothing radiation loss, considering the process of heat transfer. ..

Here, the core loss is a human body exergy loss due to heat transfer inside the human body such as metabolic heat, exhalation / inspiration, and blood circulation. Skin loss is a loss of human exergy associated with heat transfer between clothing and the surface of the skin, which is caused by heat conduction from the deep part of the human body to the skin, blood circulation, and evaporation of sweat. Clothes heat conduction loss is a human body exergy loss due to heat transfer (heat conduction) between the air around the human body and clothes. The clothing radiation loss is a human body exergy loss due to heat transfer (radiation) between the interior and clothing around the air.

(ii-1) FIG. 6 will be specifically described.

According to FIG. 6, when the interior 16 is at a low temperature (low temperature wall 10 ° C.), the clothing radiation loss of the occupant is larger than when the interior 16 is at a high temperature (high temperature wall 20 ° C.). In addition to the above (see the vertical length in the region of large radiation loss in the left figure in FIG. 6), it is shown that the heat conduction loss of clothing based on the heat transfer from the human body (skin) Psk of the occupant P to the clothing Pcl increases. (Refer to the vertical length in the region of large heat conduction loss in the left figure in FIG. 6). This is because, as described above, the lower the surface temperature of the interior 16 (interior 16 surface temperature <occupant clothing temperature), the greater the clothing radiation loss due to heat transfer between the clothing Pcl of the occupant P and the interior 16. The clothing temperature of the occupant P decreases, and the difference between the skin temperature of the occupant P (human body temperature) and the clothing temperature of the occupant P increases accordingly, so that heat is transferred between the skin surface and the clothing Pcl. It is probable that the skin loss became large.

(ii-2) On the other hand, when the interior 16 is heated to a high temperature (high temperature wall 20 ° C.), it is shown that the clothing radiation loss of the occupant P is considerably small (in FIG. 6, the radiation loss in the right figure is small). (Refer to the region), and it was shown that the clothing heat conduction loss of the occupant P becomes small (see the region of small heat conduction loss in the right figure in FIG. 6). Contrary to the above description, the higher the surface temperature of the interior 16, the smaller the clothing radiation loss of the occupant P, so that the decrease in the clothing temperature of the occupant P is suppressed, and the occupant P's clothing radiation loss is suppressed accordingly. It is considered that this is because the skin loss is reduced by reducing the difference between the skin temperature (human body temperature) and the clothing temperature of the occupant P. In this case, the temperature condition of the vehicle interior air temperature between the interior 16 and the occupant P had almost no effect on the above basic relationship regardless of whether the interior 16 was in a low temperature or a high temperature state (radiation in FIG. 6). See the vertical length of heat conduction loss over the entire horizontal axis).

(ii-3) From this, the present inventor pays attention to the following regarding the low temperature state of the interior 16.

(ii-3-1) If the interior 16 is heated to raise the interior surface temperature to the temperature inside the cabin 2 or higher, the interior of the cabin 2 can be heated by convection heat transfer, and the interior surface temperature can be adjusted to the occupant. If the temperature is raised above the clothing temperature of the occupant, the interior 16 does not take radiant heat (radiant heat) from the occupant's clothing, and the decrease in the occupant's clothing temperature can be suppressed. Therefore, raising the interior surface temperature of the interior 16 is effective for preventing the occupants from feeling the cold.

(ii-3-2) In this case, the region where the interior 16 makes the occupant P feel cold based on the low temperature state is the region of the interior 16 facing the occupant's clothing Pcl, and the occupant's clothing Pcl. If only a part of the interior 16 facing the area (corresponding area) is locally and directly heated and the surface temperature of the interior is set to be equal to or higher than the occupant's clothing temperature, the radiant heat from the occupant's clothing Pcl by the interior 16 can be generated. Absorption can be suppressed or prevented. Therefore, the case where a part of the interior 16 itself is directly heated is compared with the case where the surface temperature of the interior 16 is raised by heating the entire interior 2 with the air-conditioned air. The surface temperature of the corresponding region can be quickly reached to a desired temperature, and the occupant's feeling of cold can be quickly eliminated based on the low temperature state of the interior 16.
(2) Outline of control of the electronic control unit ECU In consideration of the above points of interest, the electronic control unit ECU performs the following control.

As shown in FIG. 8, the electronic control unit ECU has a predetermined engine cooling water temperature (basically, one that warms the conditioned air) so that the engine cooling water temperature can raise the temperature of the conditioned air sent from the air conditioning device 15. The set temperature is used, not only after the engine warm-up is completed, but also in the engine warm-up stage) (predetermined state), the interior is air-conditioned by the interior temperature riser 14. The temperature (internal temperature rise) is prioritized over the heating (heat rise) of the space inside the vehicle interior 2 by the conditioned air sent from the air conditioning device 15. In order to give priority to the interior heating by the interior heating heater 14, not only the interior heating by the interior heating heater 14 is performed, but also the amount of heat supplied based on the interior heating by the interior heating heater 14 is set to the air conditioning air. Including the case where the amount of heat supplied is larger than the amount of heat supplied based on the heating by. Of course, in this case, the air conditioner 15 performs optimum control and sends out a desired air conditioner air into the vehicle interior 2.

On the other hand, when the engine cooling water temperature exceeds a predetermined engine cooling water temperature (predetermined state) that can make the conditioned air feel warm to the occupants (normal state), the electronic control unit ECU determines that the electronic control unit ECU is as shown in FIG. The heating (heating) by the air-conditioning air is prioritized over the interior heating by the interior heating heater 14. In this case, in order to give priority to heating by the air-conditioned air, not only the heating by the air-conditioned air is performed, but also the amount of heat supplied based on the heating by the air-conditioned air is supplied based on the internal heating by the internal heating heater 14. Including cases where the amount of heat is larger than the amount of heat.

In the upper part of FIG. 8, only the heating means or the heating means that should be prioritized are described for easy understanding.

The control contents of the electronic control unit ECU will be specifically described with reference to the flowchart shown in FIG. In addition, V indicates a step. Further, each interior area 17 to 20 is individually heated and controlled by each interior temperature riser 14, but for convenience of explanation, the interior applicable area 16A is used as a representative of the interior areas 17 to 20, and the interior corresponding area 17 to 20 is used. It will be described as assuming that the region 16A is heated and controlled by the internal temperature rising heater 14.

When the electronic control unit ECU is activated, first, the initial setting is performed in V1. As this initial setting, the warm-up completed engine cooling water temperature αT (40 degrees), coefficients α1, β1 (α1> β1, α1 + β1 = 1), coefficients α2, β2 (α2 <β2, α2 + β2 = 1), etc. are set information. Set. In the next V2, various information is read. Specifically, the user-set temperature Tctt, the vehicle interior air temperature Tref, and the engine cooling water temperature Tew input by the input operation of the occupant (user) are read.

When various information is read, the heating target H in the vehicle interior 2 is calculated in V3 based on the information of V2. The internal heating target H is obtained by the difference (Tctt-Tref) between the user-set temperature Tctt and the vehicle interior air temperature Tref.

When the heating target H is calculated, it is determined whether or not the engine cooling water temperature Tew is equal to or lower than the warm-up completed engine cooling water temperature αT (40 degrees). This is to determine whether or not the engine cooling water is in a state (normal state) that can be used as a heat source for the air conditioner 15. Therefore, when V4 is YES, it is assumed that the engine cooling water has not reached a state where it can be used as a heat source for the air conditioner 15, and it is effective to heat the inside of the vehicle interior 2 with the interior temperature riser heater 14. Proceeding to V5, in order to give priority to the heating by the interior heating heater 14 over the heating by the air conditioner 15, in the V5, the heating target burden value of the interior heating heater 14 is set to the vehicle interior heating target H. The × coefficient α1 is set, and the heating target burden value of the air conditioner 15 is set to the vehicle interior heating target H × coefficient β1. In this case, since α1 and β1 have a relationship of α1> β1 and α1 + β1 = 1, the heating target load value H × α1 of the internal temperature riser heater 14 is the heating target load value H × β1 of the air conditioner 15. The amount of heat corresponding to each heating target burden value is supplied by the internal temperature riser heater 14 and the air conditioner 15, respectively.

As a result, at this time, it cannot be expected that the interior space of the vehicle interior 2 is heated by the air-conditioned air, but the interior temperature riser 14 raises the interior surface temperature of the interior applicable area 16A to heat the interior space of the vehicle interior 2 ( In addition to convection heat transfer), it is possible to quickly suppress the clothing radiation loss of the occupants and quickly eliminate the occupants from feeling cold.

On the other hand, when V4 is NO, it is assumed that the engine cooling water has reached a state where it can be sufficiently used as a heat source for the air conditioner 15, and the heating by the air conditioning air sent by the air conditioner 15 is used as the internal temperature riser heater 14. In V6, the heating target burden value of the interior heating heater 14 is set to the vehicle interior heating target H × coefficient α2, and the heating target burden value of the air conditioner 15 is set to the vehicle interior heating target in order to give priority to the heating by the above. The temperature target is H × the coefficient β2. In this case, since α2 and β2 have a relationship of α2 <β2, α2 + β2 = 1, the heating target load value H × β2 of the air conditioner 15 is the heating target load value H × α2 of the internal heating heater 14. The amount of heat corresponding to each heating target burden value is supplied by the air conditioner 15 and the interior heating heater 14, respectively.

10 shows a second embodiment, and FIGS. 11 to 13 show a third embodiment. In each of the embodiments, the same components as those in the first embodiment are designated by the same reference numerals and the description thereof will be omitted.

The second embodiment shown in FIG. 10 shows a modification of the first embodiment. In this second embodiment, when the warm-up of the engine is completed, the engine cooling water temperature Tew (to be exact, the difference between the engine cooling water temperature Tew and the vehicle interior air temperature Tref) changes to the temperature rising temperature in the vehicle interior 2. Focusing on the fact that the difference between the user-set temperature Tctt and the vehicle interior air temperature Tref as (heating target H) is higher than Tct-Tref, the interior temperature rise is based on the comparison result between Tew-Tref and Tct-Tref. It is decided whether to prioritize the heating by the heater 14 or the heating by the air conditioner 15.

The control contents of the electronic control unit ECU according to the second embodiment will be specifically described with reference to the flowchart shown in FIG.

When the electronic control unit ECU is activated, first, the initial setting is performed in W1. As this initial setting, coefficients α1, β1 (α1> β1, α1 + β1 = 1), coefficients α2, β2 (α2 <β2, α2 + β2 = 1) and the like are set as setting information. In the next W2, various information is read. Specifically, the user-set temperature Tctt, the vehicle interior air temperature Tref, and the engine cooling water temperature Tew input by the input operation of the occupant (user) are read.

When various information is read, in W3, the heating target (heating temperature) H in the vehicle interior 2 is calculated based on the information in W2, and in the subsequent W4, the engine cooling water temperature Tew and the vehicle interior air temperature. ΑP, which is the difference from Tref, is calculated. The heating target H of W3 is obtained by the difference Tct-TVref between the user-set temperature Tctnt and the vehicle interior air temperature Tref.

In the next W5, it is determined whether or not the αP of W4 is H or less of W3. When the warm-up of the engine is completed, αP, which is the difference between the engine cooling water temperature Tew and the vehicle interior air temperature Tref, becomes higher than H = Tct-Tref, which is the heating target (heating temperature). Focusing on this, when the αP of W4 is H or less of W3, it is considered that it is insufficient to use the engine cooling water as a heat source, and the heating by the internal temperature riser heater 14 is prioritized. Therefore, when W5 is YES, the process proceeds to W6 showing the same content as V5 of FIG. 9 in the first embodiment, and when W5 is NO, W7 showing the same content as V6 of FIG. 9 also in the first embodiment. Proceed to.

In this second embodiment, as described above, the user-set temperature Tctnt is involved in the determination criteria. Therefore, the lower the user-set temperature Tctnt is set, the lower the engine cooling water temperature Tew is added by the air conditioner 15. Temperature will be prioritized.

The third embodiment shown in FIGS. 11 to 13 assumes that the battery BA is used as the heat source of the heating heater (electric type) 52 of the air conditioner 15 and the internal temperature riser heater 14, and the balance of the battery BA. It shows the response when the amount is small and the outside air temperature outside the vehicle is low.

As an operating factor of the heating heater 52, when the remaining amount of the battery BA becomes low and the outside air temperature outside the vehicle becomes low, the heating heater 52 becomes difficult to heat. Therefore, in the third embodiment, as shown in FIG. 11, in order to control the interior temperature riser heater 14 and the air conditioner 15 to solve the above problems, the electronic control unit ECU is provided with the vehicle interior air temperature. In addition to each information from the detection sensor D1 and the vehicle interior set temperature input switch D4, the remaining amount information of the battery BA from the battery remaining amount detection sensor D6 and the outside air temperature information outside the vehicle from the outside air temperature detection sensor D7 are input. ..

Then, the electronic control unit ECU determines whether or not the battery remaining amount is low and whether or not the outside air temperature is in a low temperature state based on the detection information of the battery remaining amount and the outside air temperature, and the battery remaining amount. When it is determined that the temperature is low and the outside air temperature is in a low temperature state, it is determined that the heating heater 52 is in a state where it is difficult to operate, and that the state is in a predetermined state. As a result, the interior heating heater 14 with low energy consumption is preferentially used in a predetermined state, and the consumption of the battery BA can be suppressed as much as possible while efficiently improving the thermal comfort of the occupant. Become. Therefore, particularly when the automobile 1 is an electric vehicle, the traveling power can be secured as much as possible.

The control contents of the electronic control unit ECU according to the third embodiment will be specifically described with reference to the flowchart shown in FIG. In addition, X indicates a step.

When the electronic control unit ECU is activated, first, the initial setting is performed in X1. As this initial setting, the reference battery remaining amount Vst, the reference outside air temperature Tst, the coefficients α1, β1 (α1> β1, α1 + β1 = 1), the coefficients α2, β2 (α2 <β2, α2 + β2 = 1), etc. are set as setting information. Will be done. In the next X2, various information is read. Specifically, the user-set temperature Tctt, the vehicle interior air temperature Tref, the battery remaining amount Vs, and the outside air temperature Tout input by the input operation of the occupant (user) are read.

When various information is read, the heating target H in the vehicle interior 2 is calculated in X3 based on the information of X2. The heating target H is obtained by the difference Tct-Tref between the user-set temperature Tctnt and the vehicle interior air temperature Trf.

In the next X4, it is determined whether or not the remaining battery amount Vs of X2 is equal to or less than the reference battery remaining amount Vst of X1, and when the X4 is YES, whether or not the outside air temperature Tout is equal to or less than the reference outside air temperature Tst in the following X5. Is determined. This is to determine whether or not the heating heater 52 is difficult to operate depending on the remaining battery level and the outside air temperature. In this case, the reference battery remaining amount Vst is a judgment reference value for determining that the battery remaining amount is low below that from the viewpoint that the heating heater 52 becomes difficult to operate, and the reference outside air temperature Tst is the heating. From the viewpoint that the heater 52 is difficult to operate, it is a determination reference value below which the outside air temperature is considered to be low. Therefore, when both X4 and X5 are YES, it is considered that the heating heater is difficult to operate because the remaining battery level is low and the outside air temperature is low, which is the same as V5 in FIG. 9 in the first embodiment. Proceeding to X6 showing the contents, the heating by the interior heating heater 14 is prioritized over the heating by the conditioned air. As a result, not only can the thermal comfort of the occupant be efficiently improved by heating with the interior heating heater 14, but also the consumption of the battery BA can be suppressed as much as possible by using the interior heating heater 14 which consumes less energy. can. Therefore, when the automobile 1 is an electric vehicle, it is possible to secure as much running power as possible while efficiently improving the thermal comfort of the occupants.

When either X4 or X5 is NO, it is not in a predetermined state. Therefore, the process proceeds to X7, which has the same contents as V6 in FIG. Priority is given to heating.

Although the embodiments have been described above, the present invention includes the following aspects.
(1) Uniformly control each interior temperature riser 14 in each interior area 17 to 20 (for example, heating control is performed based on the lowest temperature of each interior area 17 to 20).
(2) The surface temperature of each area 17 to 20 of the interior is controlled by the interior temperature riser 14 so that the difference between the occupant's clothing temperature and the interior surface temperature thereof becomes small (the difference includes 0 or a negative state). ).

The present invention can be used to improve the thermal comfort of the occupant in the passenger compartment 2.

1 car 2 cabin 3 instrument panel (interior 16)
4 doors (interior 16)
5 console (interior 16)
8 Driver's seat (interior 16)
13 Vehicle temperature control device 14 Interior temperature riser heater (interior temperature riser)
14A film heater (interior temperature rise means)
15 Air conditioner (air conditioner)
16 Interior 16A Interior Applicable area 17 Side wall area of console 5 18 Bottom area of instrument panel behind steering wheel 19 Door door panel area 52 Heater core (heater for heating)
BA battery D6 battery level detection sensor (related factor status detection means)
D7 outside air temperature detection sensor (related factor status detection means)
D8 engine cooling water temperature detection sensor (related factor status detection means)
ECU electronic control unit (control means)
Tew Engine cooling water temperature αT warm-up completed Engine cooling water temperature Vst standard Battery level Tst standard Outside air temperature P Crew (driver)

Claims (3)

In a vehicle temperature control device equipped with an air conditioning means that adjusts the temperature inside the vehicle using air conditioning air.
Of the interiors, an interior temperature raising means that heats the interior that does not come into direct contact with the occupants from the inside side of the interior to raise the surface temperature of the interior.
The related factor status detecting means for detecting the related factor status related to the temperature raising operation of the air conditioning means, and the related factor status detecting means.
When it is determined that the related factor status is in a predetermined state which is lower than the normal state based on the information from the related factor status detecting means, the interior temperature raising means and the air conditioning means are controlled. A control means for warming the vehicle interior by giving priority to heating by the interior temperature raising means over heating by the air conditioning means.
Is provided,
The air-conditioning means is provided with a heating heater for using the air-conditioning air as warm air.
The related factor status detecting means is set to detect the operating factor status of the heating heater as the related factor status.
When the control means determines that the heating heater is in a difficult state to operate based on the operating factor status of the heating heater detected by the related factor status detecting means, it determines that the heating heater is in the predetermined state. Set to
The heating heater is supposed to use a battery as a heat source.
The related factor status detecting means is set to detect the remaining battery level of the battery and the outside air temperature outside the vehicle interior.
Based on the information from the related factor status detecting means, the control means determines that the battery is in the predetermined state when it is determined that the remaining battery level is equal to or less than the predetermined amount and the outside air temperature is equal to or less than the predetermined temperature. Is set to,
A temperature control device for vehicles characterized by this. In claim 1,
The control means is adapted to control the rate of temperature increase by the interior temperature riser and the rate of temperature increase by the air conditioner with respect to the target vehicle interior temperature, and when it is determined that the condition is in the predetermined state, the interior temperature rise is increased. The rate of temperature rise by the heating means is set to be higher than the rate of temperature rise by the air conditioning means.
A temperature control device for vehicles characterized by this. In claim 1 or 2,
The control means is set to operate only the interior temperature raising means when it is determined that the control means is in the predetermined state.
A temperature control device for vehicles characterized by this.

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