JP2501904B2 - Automotive air conditioner - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air conditioner for a vehicle, which operates a plurality of air conditioners with electric power from a vehicle-mounted power supply.

2. Description of the Related Art Japanese Patent Application Laid-Open No. 58-11
The ones disclosed in 6216 and JP-A-58-194612 have been proposed. That is, in the former case, the temperature of the seat is detected, and if the temperature is extremely low, the set temperature of the heating device arranged on the seat is set to a high temperature, and if it becomes a stable state, the set temperature of the heating device is originally set. By lowering the temperature to the set temperature, passenger comfort is improved. Also, in the latter case, when the engine cooling water temperature is low and heating by the air conditioner is difficult, when the outside temperature is low, the seat heating device is activated according to the seating position of the occupant, and thereby the immediate effect is achieved. To heat the room.

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention When a plurality of heating devices are selectively operated depending on the seating condition such as which seat an occupant is seated on and the temperature condition of the heating device, depending on the seating condition and the temperature condition, all the heating devices may be operated. May operate simultaneously, and the total amount of power consumption may exceed the allowable power amount of the vehicle-mounted power source, making it difficult to properly operate a plurality of heating devices.

Further, when a plurality of heating devices reach the set temperature, the ON / OFF operation frequency of each heating device increases. When each heating device is turned on and off, if the total amount of power consumption fluctuates greatly, the in-vehicle power supply is temporarily overloaded, and, for example, the light emission amount of the lamp fluctuates or the air conditioner However, there is a problem in that the operation of other functional parts that are powered by electric power may be hindered, such as that noise may increase due to fluctuations in the rotation of the blower fan.

Although the heating device has been described as an example here, the same problem occurs even if the device is a cooling device that is operated by electric power.

Means for Solving the Problem In an automobile air conditioner provided with a plurality of air conditioners that perform at least one of a heating operation and a cooling operation by electric power from an on-vehicle power supply, a priority order of use of the air conditioners and a reference fluctuation amount, Is preset, and the use priority is corrected according to the temperature information of each heating and cooling device itself,
The sum of the power consumptions added from the corrected priority of use becomes the closest value to the permissible power within the permissible power of the on-vehicle power supply, and the fluctuation amount of the sum of the power consumptions is a predetermined reference fluctuation amount. Sequentially calculate combinations that fit within,
A control device is provided which selectively operates a plurality of cooling and heating devices based on the result of this calculation.

Action The preset use priority of a plurality of heating and cooling devices is corrected according to the temperature information of each cooling and heating device itself, and the total power consumption is calculated from the corrected use priority of the cooling and heating devices. The total sum of this power consumption is the closest value to the permissible power amount within the permissible power amount of the vehicle-mounted power supply, and the combination of cooling and heating devices whose total fluctuation amount of the power consumption is within the standard fluctuation amount is sequentially obtained. It supplies and drives electric power to the cooling and heating equipment to be combined.

Example (see FIGS. 1 to 4 and Tables 1 and 2) In this example, a plurality of cooling / heating devices A are provided with a heating steering 1, a heating seat 2, a heating knee 3, a heating door 4, a heating carpet 5, and a heating panel 6. , Heating instrument panel 7,
It is composed of a heating ceiling 8 and a cooling sheet 9. Each of these cooling and heating devices 1 to 9 is connected to an in-vehicle power supply 11 via a control device 10.

The heating steering 1 is arranged on a steering wheel that is held by an occupant.

The heating seat 2 is divided into seats so as to warm the thighs of an occupant seated in the front and rear seats.

The heating knee 3 is divided and placed on the rear seat so that an occupant seated in the rear seat can hang it on the knee.

The heating door 4 is divided into the vehicle body side including the door corresponding to the left and right seats of the front and rear seats in the vehicle width direction side so as to prevent cold radiant heat from the outside of the vehicle from entering the vehicle interior. Has been done.

The heating carpet 5 is divided into left and right front floors and left and right rear floors so as to warm the feet of passengers.

The heating panel 6 is divided into left and right lower parts of the instrument panel so as to warm the knees of the front seat occupant.

The heating instrument panel 7 is divided into left and right parts above the instrument panel so as to prevent cold radiant heat from the outside of the vehicle from entering the vehicle interior.

The heating ceiling 8 is divided into front, rear, left and right of the vehicle body roof so as to prevent cold radiant heat from the outside of the vehicle from entering the vehicle interior.

The cooling seat 9 is divided and arranged below the seat action on the left and right of the front seat so as to prevent sweating of the thighs of the occupant.

Here, in each of the divided air-conditioning equipments 2 to 9, as shown in FIG. 3, the one corresponding to the right front seat (driver's seat) is, for example, the heating seat 2-1. An arithmetic number "1" with a hyphen is added after the arithmetic number. The number corresponding to the left of the front seat is, for example, like the heating sheet 2-2, an arithmetic number "2" with a hyphen added after the arithmetic number representing the air conditioning equipment. For example, the heating seat 2-
As shown in Fig. 3, the arithmetic number "3" with a hyphen is added after the arithmetic number representing the air conditioning equipment. For the one corresponding to the left rear seat, for example, like the heating sheet 2-4, an arithmetic numeral "4" with a hyphen after the arithmetic numeral representing the air conditioning equipment is attached.

The control device 10 is configured in a microcomputer, and the use priority order 12 is set in advance by being stored in the memory of the microcomputer as a system base. By turning on the main switch 16, the use priority order 12 is set to the set use priority order 12. temperature sensor 17 _1, 17 _2-1, ..., 17 the temperature of the heating and cooling devices each 1-9 detected by the _n T _1, T _2-1, ..., T _n
(Hereinafter, simply the detected temperature T ₁ , T _2-1 , ...
The temperature information indicating whether T _n has reached the set temperature T _s1 , T _s2-1 , ..., T _sn , the seat switch 18 ₁ on the front seat right side (driver's side), the front seat left side The seat switch 18 _{2 of} the rear seat, the seat switch 18 ₃ on the right side of the rear seat, and the seat switch 18 ₄ on the left side of the rear seat take into account the passenger seating position information, etc., which has detected where in the seat the passenger is seated. the preset program as a separate system based function of calculating the combination sum a _M of the power consumption of the heating and cooling devices 1-9 to be used is the nearest value within the permissible power in-vehicle power supply 11 In addition to the above, a function for calculating a combination in which the variation amount ΔA _M of the total power consumption of each cooling and heating device 1 to 9 falls within a preset reference variation amount ΔA _S is provided, and each cooling and heating device is based on the calculation result. 1 to
9 is selectively operated by the electric power of the vehicle-mounted power supply 11.

The on-vehicle power supply 11 is configured as a battery that charges electricity generated by a generator (not shown) by rotating the engine (not shown).

The operation of the above embodiment will be described in detail with reference to the flowchart shown in FIG.

First, step 101 is a preparatory work. Specifically, the use priority 12 and the reference variation amount ΔA _S as shown in Table 1 below are stored in the memory of the microcomputer as a system base. This usage priority 12 is "Each heating / cooling device 1
~ 9 are associated with part numbers "," association between each part number and power consumption ", and" association between passenger seating position and part number ".

Here, in the "correspondence between each air conditioner 1 to 9 and part number", the heating steering 1 is a part 1, the heating seat 2-1 is a part 2-1, the heating seat 2-2 is a part 2-2, and heating. The parts attached to the cooling / heating devices 1 to 9 are the parts 3-3 for the lap 3-3, the parts 3-4 for the heating lap 3-4, and the part 4-1 for the heating door 4-1. Therefore, it is assumed that the cooling and heating devices 1 to 9 are associated with the components 1 to 9. Further, the use priority order 12 of each of the components 1 to 9 set in the microcomputer is, for example, the component 1 as the first
Position, part 2-1 is second, part 2-2 is third, part 2
-3 is the fourth place, and it is determined from an empirical rule which part of the passenger compartment is warm and comfortable when the passenger gets on the board.

"Associating each part number with power consumption"
The power consumptions of 1, component 2-1, component 2-2, ... Are stored. In the following description, what is expressed by current instead of power is that the battery 11 normally has a voltage of 12V in a passenger car, and when expressing power, the value obtained by multiplying the voltage of 12V by the current is Since it is electric power, it is expressed by current for easy understanding. For example, if the current consumption A ₁ of the heating steering 1 8A, component 1 = 8, heated seat 2
If the consumed current amount A _{2-1 of} −1 is 5 A, it is stored as component 2-1 = 5.

In the "correspondence between occupant seating and part number", each of the parts 1 to 9 to be operated is determined according to the seated position of the occupant. For example, seat switches 18 ₁ , 18 ₂ , 18 ₃ , 18 ₄
When the occupant is seated in the driver's seat according to the occupant seating position information from, the parts 1 (heating steering) around the driver's seat, parts 2-1 (heating seat), parts 4-1 (heating door), parts 5 -1 (heating carpet), part 6-1 (heating panel), part 7-1 (heating instrument panel), and part 8-1 (heating ceiling) are selected.

In the next step 102, it is determined whether the main switch 16 for operating the vehicle air conditioner is set to ON, OFF, or AUTO. main switch
If 16 is on, go to step 104. If the main switch 16 is set to auto, the operation proceeds to step 103, and the operation mode of the air conditioner (not shown) that feeds the conditioned air is determined, and the operation mode is the ventilator mode VENT or the bilevel. If the mode is B / L, the process returns to step 102 without proceeding to the subsequent steps, and only if the mode is heat mode HEAT, step 104
Proceed to.

In step 104, the usage priority 12 is read from the system base of the microcomputer into the sub memory for temporary storage of the microcomputer.

In step 105, the terminal voltage of the battery 11 is 1 from the low voltage side.
When the voltage rises to 1.8V or more, it is defined as ON, and 1 from the high voltage side.
When the voltage drops below 1.6V, it is defined as off, and battery 11
The on / off state of is determined. Only when the battery 11 is on, proceed to the next step 106.

In step 106, the battery 1 that can be used in parts 1 to 9
Read the allowable current value A ₀ of 1. The allowable current amount A ₀ is a value obtained by subtracting the current consumption amount A _a currently used by the air conditioner, the lamp, the engine, etc. from the maximum allowable current amount A _MAX (rated current amount) of the battery 11 (A ₀ = A _MAX −A _a ). For example, assuming that the blower fan of the air conditioner is driven by the battery 11, first the maximum allowable current amount A _MAX of the battery 11 is calculated, and then the blower fan current consumption amount A applied to the blower fan A Calculate _FAN (A _a ),
Then, the allowable current amount A ₀ of the battery 11 is calculated as A ₀ = A _MAX −A _FAN , and this allowable current amount A ₀ is stored in the sub memory of the microcomputer.

In step 107, the seat switches 18 ₁ , 18 ₂ , 18 ₃ , 18
_The occupant seating position information is read from the detection state of ₄ . In other words, the seat switch 18 ₁ , 1 1
Seat switch 18 ₁ , 18 ₂ , 18 ₃ , 1 with 8 ₂ , 18 ₃ and 18 ₄ = 1 and turned off when the occupant is absent (not seated)
8 ₄ Each is set to 0 and stored in the sub memory of the microcomputer.

In step 108, the temperature information of each of the cooling and heating devices 1-9 is read. That is, each detected temperature _{T 1, T 2-1, ......,} T n is the set temperature T _s1, T _S2-1, ......, respectively, which has reached the T _sn = 1, respectively has not reached = 0, and stored in the sub memory of the microcomputer.

In step 109, on / off of each of the seat switches 18 ₁ , 18 ₂ , 18 ₃ , and 18 ₄ read in step 107, that is, based on the passenger seating position information “1” or “0”,
Correct usage priority 12. For example, if the occupant is seated in the driver's seat and the right rear seat, and the seat switches 18 ₁ and 18 ₃ are on and the seat switches 18 ₂ and 18 ₄ are off, the original use priority shown in Table 1 is used. From rank 12, parts 2-2, parts 2-4, ... marked with "x" in the remark 1 column of Table 1 are excluded, and parts 2 marked with "○" in the remark 1 column of table 1 The original use priority 12 shown in Table 1 is corrected by advancing 3, 3, 3 ...
Indicates that only the ones marked with "○" in the remarks column have been moved up in ranking.)

In step 110, the use priority order 12 is corrected based on the temperature information read in step 108. For example parts
The detected temperature T ₁ of the 1,4-1,4-2, T _4-1, T _4-2 is the set temperature
T _s1 , T _s4-1 , T _s4-2 have been reached, and parts 1,4-1,4-2
If the temperature information of "0" is "0", "x" is displayed in the remark 2 column of Table 1 from the use priority order 12 after correction in step 109.
In addition to the marked parts 1,4-1, remarks 2 in Table 1
The usage priority order 12 is corrected again by moving up the parts 2-3, 3-3, ... marked with "○" in the field (the usage priority order 12 after this re-correction is indicated as "○" in the remark 2 column). Only the marked ones will be advanced.

In step 111, the total sum A _M of the current consumption amounts A _{1 to} A ₉ of the respective parts 1 to 9 for which use is decided is calculated from the use priority order 12 recorrected in step 110, and this total sum A _M is calculated. Step
The combination having the closest value within the allowable current amount A ₀ of the battery 11 obtained in 106 is calculated.

For example, in detail based on the remark 2 column of Table 1, each of the first to seventh parts of the re-corrected use priority 12 is 2-
3,3-3,4-3,5-1,5-3,6-1,6-3 current consumption A _2-3 ,
_A3-3 , _A4-3 , _A5-1 , _A5-3 , _A6-1 , _A6-3 are sequentially read from the sub-memory by the function of the CPU of the microcomputer and added together, and this addition is made. Whether or not each of the components 1 to 9 is used / not used is determined by determining whether or not the total amount A _M is within the allowable current amount A ₀ . Specifically, the current consumption amounts A _2-3 and A _{3-3 of} the first-order component 2-3 and the second-order component 3-3 are added.

A _2-3 + A _3-3 = A _M-1 ……… Determine whether the sum A _M-1 of this formula is within the allowable current amount A ₀ , and the sum A _{M-1 of the} formula is the allowable current amount. When the amount is within the amount A ₀ , the calculation proceeds, and when the sum A _M-1 of the formula exceeds the allowable current amount A ₀ , the calculation is stopped and the first-ranked component 2-3
Only decide to use.

, In order for the above total sum A _M-1 to proceed within the allowable current amount A ₀ , the current consumption amount A _4-3 of the third-ranked component _4-3 is added to the total sum A _M-1 of the equation. .

A _M-1 + A _4-3 = A _M-2 ……… Determine whether the sum A _M-2 of this formula is within the allowable current amount A ₀ , and the sum A _{M-2 of the} formula is the allowable current amount. If it is within the amount A ₀ , the calculation proceeds, and if the total sum A _M-2 of the equation exceeds the allowable current amount A ₀ , the calculation is stopped and the first and second parts 2- Decide to use only 3,3-3.

, In order for the above-mentioned total sum A _M-2 to proceed within the allowable current amount A ₀ , the current consumption amount A _5-1 of the fourth-ranked component _5-1 is added to the total sum A _M-2 of the formula. .

A _M-2 + A _5-1 = A _M-3 ……… Determine whether the sum A _M-3 of this formula is within the allowable current amount A ₀ , and the sum A _{M-3 of the} formula is the allowable current When the amount is within the amount A ₀ , the calculation proceeds, and when the sum A _M-3 of the equation exceeds the allowable current amount A ₀ , the calculation is stopped and the first to third parts 2-3 , 3-3,4-3 are used only.

, In order for the above-mentioned total sum A _M-3 to proceed within the allowable current amount A ₀ , the current consumption amount A _5-3 of the fifth-ranked component _5-3 is added to the total sum A _M-3 of the formula. .

A _M-3 + A _5-3 = A _M-4 ……… Determines whether the sum A _M-4 of this formula is within the allowable current amount A ₀ , and the sum A _{M-4 of the} formula is the allowable current amount. If it is within the amount A ₀ , the calculation proceeds, and if the sum A _M-4 of the equation exceeds the allowable current amount A ₀ , the calculation is stopped and the first to fourth parts 2-3 , 3-3,4-3,5-1 are decided to be used.

, In order for the above-mentioned total sum A _M-4 to proceed within the allowable current amount A ₀ , the current consumption amount A _6-1 of the sixth-ranked component _6-1 is added to the total sum A _M-4 of the formula. .

A _M-4 + A _6-1 = A _M-5 ……… Determines whether the sum A _M-5 of this formula is within the allowable current amount A ₀ , and the sum A _{M-5 of the} formula is the allowable current amount. If it is within the amount A ₀ , the calculation proceeds, and if the sum A _M-5 of the formula exceeds the allowable current amount A ₀ , the calculation is stopped and the first to fifth parts 2-3 , 3-3,4-3,5-1,5-3 are used only.

, In order to allow the above-mentioned total sum A _M-5 to proceed within the allowable current amount A ₀ , add the current consumption amount A _6-3 of the seventh-ranked component 6-3 to the total sum A _M-5 of the formula. .

A _M-5 + A _6-3 = A _M-6 ……… Determine whether the sum A _M-6 of this formula is within the allowable current amount A ₀ , and the sum A _{M-6 of the} formula is the allowable current If it is within the quantity A ₀ , the first to seventh parts 2-3,3-3,4-3,5-1,5-3,6
-1,6-3 decides to use all, and when the sum A _M-6 of the formula exceeds the allowable current amount A ₀ , the first to sixth parts 2-3,
Decide to use only 3-3, 4-3, 5-1, 5-3, 6-1.

In step 112, a combination is calculated in which the variation amount ΔA _M of the total current consumption amount A _M calculated in step 110 is within the reference variation amount ΔA _S set in step 101. That is, the total current consumption at step 110 is A _{M (n + 1)}
And the total amount of current consumption at a certain time before this point
When A _{M (n),} the variation amount ΔA _M ΔA _M = | calculated from that required as, first, a variation amount _{ΔA M, | A M (n} + 1) -A M (n)
It is determined whether or not the variation amount ΔA _M is within the reference variation amount ΔA _S , and the use / non-use of each of the components 1 to 9 is determined.

In step 113, seat equalization processing is performed. For example, when the heating carpet 5-1 on the driver's side is selected from the calculation in steps 111 and 112, but the heating carpet 5-3 on the right side of the rear seat is not selected, When the occupant is seated both on the right side of the rear seat, only the occupant in the driver's seat can get a feeling of heating by the heating carpet 5-1 and it becomes unfair.

Therefore, if only one of the same parts corresponding to each seat is selected in step 111 by the seat equalization process and the occupant is seated on both seats, Both the same parts corresponding to the battery
The time is divided so as to be within the permissible current amount A _{0 of} 11, and the power is alternately turned on / off so that each occupant can evenly get a feeling of heating.

In step 114, the control device 10 controls the heating and cooling equipment 1 corresponding to the components 1 to 9 selected in the processing of steps 101 to 113.
A current (electric power) is supplied from the battery 11 to 9 to 9 to selectively operate the cooling and heating devices 1 to 9 in the seated portion of the occupant.

Here, steps 102 to 114 are always repeated while the main switch 16 is set to ON or auto, and therefore the processing in step 112 will be described in detail with reference to Table 2 below. Up to now, the parts 2 to 9 associated with the divided air-conditioning equipment 2 to 9 have been explained with the addition of a hyphen, but in Table 2, they are divided for the sake of simplicity. Assuming that each of the heating and cooling devices 2 to 9 that are connected together is one,
Parts 1 to 6 are shown and parts 7 to 9 are omitted.

(1) In the state where the parts 1 and 2 marked with "○" in the n-th time in the control number column of Table 2 are in the ON operation, the table is displayed according to the processing of steps 102 to 111 in FIG. Parts 2, 3, 4, which are marked with "○" in the (a) -th row of the n + 1th control column
Assuming that 5 is selected, in step 112 of FIG. 4, the CPU of the microcomputer works, as shown in the remarks column of Table 2, the current consumption amounts A ₂ , A ₃ , of the components 2, 3, 4, and 5. The sum A _{M (n + 1) a} of A ₄ and A ₅ is calculated, and the sum A _{M (n) of} the n-th current consumption amounts A ₁ and A ₂ shown in the remarks column of Table 2 from the sub memory
And the amount of fluctuation ΔA, which is the difference between these two sums.
_M a _{(n + 1) a, ΔA} M (n + 1) a = | A M (n + 1) a -A M (n) | is calculated as.

This variation amount ΔA _{M (n + 1) a} is compared with the reference variation amount ΔA _S extracted from the sub memory, and the variation amount ΔA _{M (n + 1) a} is compared with the reference variation amount ΔA _S.
If it is larger than A _S, it is judged as “unsatisfactory” and the variation Δ
When A _{M (n + 1) a} is equal to or smaller than the reference variation amount ΔA _S , it is determined as “satisfied”.

If the above judgment is “satisfied”, the parts 2, 3, 4, 5
Air-conditioning equipment that is decided to be used and corresponds to parts 2, 3, 4, 5
2,3,4,5 go to the battery 11 through steps 113 and 114 in FIG.
It is driven selectively with the power of.

(2) Parts 2, 3, 4, 5 when the above judgment is “not satisfied”
Large amount of current consumption of the most value in the middle, for example parts 3 with A ₃
Is determined not to be used, and the current consumption amount A ₂ , A of the components 2, 4 and 5 marked with a circle in the n + 1th column b of the control count column of Table 2
_4, A ₅ of total A _{M (n + 1) b} is calculated, and the sum A _{M (n + 1) b} and variation is a difference between the n-th sum _{A M (n) ΔA M (} n the _{+1) b, ΔA M (n} + 1) b = | a M (n + 1) b -A M (n) | is calculated as.

This fluctuation amount ΔA _{M (n + 1) b} is compared with the reference fluctuation amount ΔA _S extracted from the sub-memory, and the fluctuation amount ΔA _{M (n + 1) b} is compared with the reference fluctuation amount ΔA _{M (n + 1) b.}
If it is larger than A _S, it is judged as “unsatisfactory” and the variation Δ
If A _{M (n + 1) b} is less than or equal to the reference variation ΔA _S , it is determined as “satisfied”.

When the above determination is “satisfied”, the use of the components 2, 4, 5 is decided, and the cooling / heating equipment 2, 4, 5 corresponding to the components 2, 4, 5 is determined.
Is selectively driven by the power of the battery 11 through steps 113 and 114 in FIG.

(3) If the above determination is “not satisfied”, it is determined that the component 4 having the largest current consumption amount among the components 2, 4 and 5, for example, the component 4 having A ₄ , is not used, and the control frequency column of Table 2 is selected. N + 1th c
The sum A _{M (n + 1) c} of the current consumptions A ₂ and A ₅ of the components 2 and 5 marked with “○” in the column is calculated, and this sum A _{M (n + 1) c} and the nth The variation amount ΔA _{M (n + 1) c} , which is the difference from the total sum A _{M (n)} at the second time, is _calculated as ΔA _{M (n + 1) c} = ｜ A _{M (n + 1) c} −A _{M (n)} Calculate as

This variation amount ΔA _{M (n + 1) c} is compared with the reference variation amount ΔA _S extracted from the sub-memory, and the variation amount ΔA _{M (n + 1) c} is compared with the reference variation amount ΔA _S.
If it is larger than A _S, it is judged as “unsatisfactory” and the variation Δ
If A _{M (n + 1) c} is less than or equal to the reference variation ΔA _S , it is determined as “satisfied”.

If the above determination is “satisfied”, it is decided to use the components 2 and 5, and the cooling and heating devices 2 and 5 corresponding to the components 2 and 5 are the fourth
Since the battery 11 is selectively driven by the electric power of the battery 11 through steps 113 and 114 in the figure, the variation amount ΔAM of the total current consumption of the components selected in step 111 in FIG. 4 is equal to or less than the reference variation amount ΔAS. Step 11 until you are satisfied
2 is continued, and when the judgment in step 112 is “satisfied”, the use of the part is decided, and the heating and cooling equipment corresponding to the part decided to be used is subjected to steps 113 and 114 shown in FIG. After that, the power of the battery 11 is selectively driven.

However, it is assumed that the amount of current consumption is A ₆ <A ₅ <A ₁ <A ₂ <A ₄ <A ₃ .

The present invention is not limited to the above embodiment,
Although illustration is omitted, for example, the structure or control function shown in (a) to (e) below can be added to further improve the comfort of the occupant.

(B) When calculating the allowable current amount A ₀ of the battery in step 106 shown in FIG. 4, calculate the amount of current A _D generated by the generator, and add this amount of current A _D By calculating A ₀ as A ₀ = A _MAX + A _D −Aa
The permissible current amount A ₀ directed to 9 can be brought close to an accurate value in real time.

(B) As the cooling and heating device A, a device that only performs cooling operation,
Alternatively, the device is configured to perform both heating operation and cooling operation.

(C) The heat load state in the passenger compartment is detected from the temperature difference between the room temperature and the set temperature, and the use priority order 12 is changed accordingly during the control.

(D) It is also possible to use a heating and cooling device capable of analog control. That is, the cooling / heating equipment is selectively operated within the allowable current amount A ₀ while automatically correcting the use priority order 12 according to the temperature difference between the detected temperature of each cooling / heating equipment and the set temperature. Since this control becomes very complicated, depending on the temperature difference, "good", "somewhat good", "somewhat bad",
A method is used in which a rough evaluation value for comfort such as "bad" is given, and the use priority 12 is corrected by this evaluation value. With this method, it is possible to obtain a sufficiently practical control law without presetting a very complicated use priority order 12.

(E) The occupant's satisfaction or dissatisfaction degree is input to the preset use priority order 12, and the use priority order 12 is corrected according to this satisfaction / dissatisfaction degree. This is the so-called "learning control". By using this control, it is possible to make the control that sufficiently reflects the individual difference even if the temperature is perceived as being difficult to optimally control due to individual difference. Become. For example, if a hand switch is provided in the heating knee 3 and the heating knee 3 is turned off by the control device 10, if the passenger turns on the hand switch, the heating knee 3
Correct the set temperature of lower than before. As a result, it becomes possible to control the temperature according to the individual difference due to the frequency with which the heating lounger 3 is turned on.

EFFECTS OF THE INVENTION As described above, according to the present invention, the preset use priorities of a plurality of cooling / heating equipments are corrected according to the temperature information of each of the cooling / heating equipments themselves, and added from the corrected use priority rankings. The sum of the power consumption is the value that is the closest to the permissible power within the permissible power of the vehicle-mounted power supply, and the total variation of the power consumption is sequentially calculated in such a way that the variation falls within a preset reference variation, Since multiple cooling / heating equipments are selectively operated based on this calculation result, even if the allowable power value of the on-vehicle power supply fluctuates due to the power operation of parts other than the cooling / heating equipments, Not only can a plurality of cooling and heating devices be operated selectively and appropriately within the range of the amount, but also an on-vehicle power supply can be prevented from being overloaded when the cooling and heating devices are turned on and off. Therefore, the cooling and heating capacities of a plurality of cooling and heating devices can be effectively utilized to the maximum extent, and the comfort of the occupant can be improved.

[Brief description of drawings]

FIG. 1 is a schematic configuration diagram showing an embodiment of the present invention, FIG. 2 is a side view showing an arrangement example of the cooling / heating equipment of the embodiment, and FIG. 3 is a plan view showing an arrangement example of the cooling / heating equipment of the embodiment. FIG. 4 and FIG. 4 are flowcharts of the same embodiment. B ... Air-conditioning equipment, 10 ... Control device, 11 ... In-vehicle power supply, 12, 12A
… Priority of use, ΔA _S … Reference fluctuation amount.

Claims (1)

(57) [Claims] 1. An automotive air conditioner provided with a plurality of air conditioners that perform at least one of a heating operation and a cooling operation by electric power from an on-vehicle power supply, wherein a priority of use of the air conditioners and a reference variation amount are set in advance. Set and correct the usage priority according to the temperature information of each heating and cooling device itself, and the sum of the power consumption added from the modified usage priority is the allowable power amount within the allowable power amount of the vehicle-mounted power supply. A combination that has a value closest to and a variation in the total amount of power consumption within a preset reference variation is sequentially calculated, and a control device that selectively operates a plurality of cooling and heating devices based on the calculation result is set. An air conditioner for a vehicle, characterized by being provided.