JP2014201278A - Vehicle power consumption controller - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vehicle power consumption controller capable of controlling a vehicle using a motor that includes a grille device and an air conditioner as a traveling power source to consume electric power with optimum power consumption.SOLUTION: A total sum ΔWg+ΔWm-ΔWa of a fluctuation ΔWg in motor power consumption depending on a fluctuation in an air resistance Fa of a vehicle resulting from closing of a grill opening portion 302, a fluctuation ΔWm in motor power consumption depending on a fluctuation in motor efficiency of a motor resulting from the closing of the grill opening portion 302, and a fluctuation ΔWa in power consumption of an air conditioner 1 depending on a fluctuation in cooling capability of an outdoor heat exchanger 104 resulting from the closing of the grill opening portion 302 is determined. If this value is positive, the grill opening portion 302 is closed. If this value is either zero or negative, the grill opening portion 302 is opened.

Description

  The present invention relates to a vehicle power consumption control device that controls power consumption of a vehicle using a motor including a grill device and an air conditioner as a travel power source.

  Increase in power consumption due to reduction in the amount of air introduced into the heat exchanger when the grille opening formed at the vehicle front end is closed, and reduction in air resistance when the grille opening is closed Based on the decrease in power consumption according to the vehicle speed, the operating vehicle speed is determined so that the increase in power consumption when the grille opening is closed is within an allowable range, and the grill is determined based on the operating vehicle speed and the actual vehicle speed. A vehicular grill device that controls opening and closing of an opening is known (Patent Document 1).

JP 2011-31842 A

  However, in the above prior art, since only the increase in power consumption due to the reduction in the amount of air introduced into the heat exchanger and the decrease in power consumption due to the reduction in air resistance are taken into account, the motor is connected to the driving power source. However, there is a problem that the grille is not in an open / closed state for optimal power consumption.

  The problem to be solved by the present invention is to provide a vehicle power consumption control device capable of controlling the power consumption to be optimal for a vehicle using a motor including a grill device and an air conditioner as a travel power source.

  The present invention relates to an amount of change in motor power consumption due to a change in air resistance of a vehicle, a change in motor power consumption due to a change in motor efficiency, and a consumption of an air conditioner due to a change in refrigerant cooling capacity due to blockage of the grill opening. The above problem is solved by detecting the amount of change in power and closing the grill opening when the sum of these values is a positive value.

  When the grill opening is closed, the air resistance of the vehicle is reduced and the motor power consumption is reduced. Further, when the grill opening is closed and the motor temperature is lowered, the motor efficiency is improved and the motor power consumption is reduced. On the other hand, if the grill opening is closed, the cooling capacity of the refrigerant is reduced and the power consumption of the compressor of the air conditioner is increased. However, according to the present invention, the grill opening is closed when the sum of these becomes a positive value. Therefore, the total power consumption can be set to an optimum value.

It is a block diagram which shows the principal part of the electric vehicle to which the vehicle power consumption control apparatus which concerns on one embodiment of this invention is applied. It is a block diagram which shows an example of the control apparatus of the electric vehicle of FIG. It is a flowchart which shows the main operation | movement of the control apparatus of FIG. It is a graph which shows the relationship between the temperature of the passing air of an outdoor heat exchanger, and the power consumption of a compressor in the heat pump of FIG. It is a graph which shows the relationship between the vehicle speed and the amount of power consumption reduction of a motor in the state which closed the grill opening part. It is a graph which shows the relationship between the temperature of the motor unit 4 of FIG. 1, and magnetic flux. It is a figure which shows an example of the control map in step S9 of FIG. It is a figure which shows the other example of the control map in step S9 of FIG. It is a graph which shows the relationship between outside temperature and air density. It is a graph which shows the relationship between the vehicle speed and the amount of power consumption reduction of a motor in the state which closed the grill opening part and the half-closed state.

  FIG. 1 is a block diagram of an electric vehicle to which a vehicle power consumption control device of the present invention is applied. The electric vehicle of this example includes an air conditioner 1 that air-conditions a vehicle interior and a motor unit 4 that is a travel drive source. And a grill device 3 having a grill shutter 301 for opening and closing a grill opening 302 formed at the front end of the vehicle body.

  An air conditioner 1 shown in FIG. 1 includes a compressor 101, an indoor heat exchanger 102, a first expansion valve 103, an outdoor heat exchanger (condenser) 104, a switching valve 105 for switching between a cooling function and a heating function, and cooling. A second expansion valve 106, an evaporator (evaporator) 107, and an accumulator 108 used when used are provided with a heat pump cycle in which the refrigerant pipe 109 is connected in this order. Since the compressor 101 is driven by a motor (not shown), it is a control target of the power consumption control device of this example.

  An air conditioning unit case 110 is provided in the passenger compartment along the left-right direction of the dash panel, for example, and a blower 111 rotated by a fan motor 111M, an evaporator 107, and an indoor heat exchanger 102 are provided in the air conditioning unit case 110. It has been. An intake door 112 for switching between outdoor air and indoor air is rotatably provided at the air suction port of the blower 111, so that the mode of introduction of the inside air and the introduction of the outside air are switched.

  An evaporator 107 is provided downstream of the blower 111 of the air conditioning unit case 110, and all the outside air or the inside air introduced by the blower 111 passes through the evaporator 107. However, as will be described later, when the air-conditioning apparatus 1 of this example is used as a heating apparatus, the refrigerant does not circulate in the evaporator 107, so that the sucked air passes as it is without heat exchange.

  An indoor heat exchanger 102 is provided downstream of the evaporator 107 of the air conditioning unit case 110, and a temperature adjustment door 113 is rotatably provided on the front surface thereof. Further, a bypass 114 is provided on the side of the indoor heat exchanger 102 so that the air flowing down bypasses the indoor heat exchanger 102, and the indoor heat exchanger is adjusted by adjusting the opening degree of the temperature adjustment door 113. The ratio of the amount of air passing through 102 and the amount of air passing through detour 114 is adjusted, thereby adjusting the temperature of the conditioned air supplied into the passenger compartment.

  On the other hand, the main parts of the compressor 101, the first expansion valve 103, the outdoor heat exchanger 104, the switching valve 105, the second expansion valve 106, the accumulator 108 and the refrigerant pipe 109 are arranged in a motor room in front of the vehicle. Among these, the outdoor heat exchanger 104 is disposed at a rear portion of a grill shutter 301 of the grill device 3 described later, and a radiator 203 of the motor cooling device 2 described later is disposed at a rear portion thereof.

  When the air conditioner 1 of this example is used as a heating device, the switching valve 105 is opened, and the refrigerant from the outdoor heat exchanger 104 is guided to the accumulator 108 by bypassing the evaporator 107. The accumulator 108 stores excess refrigerant and gas-liquid separation and returns only the gas refrigerant to the compressor 101. Therefore, the gas refrigerant compressed to high temperature and high pressure by the rotation of the compressor 101 is sent to the indoor heat exchanger 102. .

  In the indoor heat exchanger 102, heat exchange is performed between the high-temperature and high-pressure gas refrigerant and the air introduced into the indoor heat exchanger 102 by the blower 111, and conditioned air for air-conditioning the vehicle interior is generated. At the same time, the gas refrigerant is cooled and liquefied. The liquefied refrigerant is rapidly decompressed by the first expansion valve 103 to be converted into a low-pressure mist refrigerant and sent to the outdoor heat exchanger 104, and is vaporized by exchanging heat with traveling wind or the like in the outdoor heat exchanger 104. After that, only the gas refrigerant is returned to the compressor 108 via the accumulator 108. In FIG. 1, the flow of the refrigerant | coolant in the case of using it as a heating apparatus is shown by the black arrow.

  Moreover, when using the air conditioning apparatus 1 of this example as a cooling device, the switching valve 105 is closed and the refrigerant | coolant from the outdoor heat exchanger 104 is guide | induced to the evaporator 107. FIG. Then, the gas refrigerant that has been compressed by the rotational drive of the compressor 101 to become high temperature and pressure passes through the indoor heat exchanger 102 and the first expansion valve 103 and is sent to the outdoor heat exchanger 104. However, by adjusting the temperature adjustment door 113, the intake air from the blower 111 is guided to the detour 114, and the temperature is adjusted to be a low target temperature.

  In the outdoor heat exchanger 104, heat exchange is performed between the low-pressure mist refrigerant that has passed through the first expansion valve 103 and the air (running wind or suction air from the fan 204) introduced into the outdoor heat exchanger 104. As a result, the mist refrigerant is cooled and liquefied. The liquefied refrigerant is abruptly reduced in pressure by the second expansion valve 112 to be sent to the evaporator 107 as a low-temperature and low-pressure mist refrigerant. The low-temperature and low-pressure mist refrigerant passing through the evaporator 107 and the blower 111 are passed to the evaporator 107. Heat exchange is performed with the introduced air, and the air passing through the evaporator 107 is cooled and dehumidified. The low-temperature and low-pressure mist refrigerant that has passed through the evaporator 107 is partially or entirely vaporized to become a gas refrigerant, and is returned to the accumulator 108. In FIG. 1, the flow of the refrigerant | coolant at the time of using it as a cooling device is shown by the white arrow.

  On the other hand, the motor cooling device 2 of this example cools a motor used as a driving source of a vehicle and an inverter (referred to as a motor unit 4) that supplies electric power to the motor. There is provided a cooling cycle in which a water jacket 201 in contact with the heat generating portion, a pump 202 for circulating cooling water through the water jacket 201, and a radiator 203 for cooling the cooling water are connected by a cooling water pipe 205. The cooling cycle further includes a fan 204 that promotes heat exchange of the radiator 203. The pump 202 and the fan 204 are each driven by a motor (not shown).

  In the motor cooling device 2 of the present example, the cooling water cooled by the radiator 203 is circulated through the water jacket 201 that contacts the heat generating part of the motor unit 4 that houses the motor and the inverter, so that the motor unit 4 that includes the motor and the inverter. The cooling water heated by exchanging heat with the heat generated in the motor unit 4 is sent to the radiator 203 by the pump 202, and between the running wind and / or the air passing through the radiator 203 by the fan 204. The cooling water is cooled by exchanging heat in step S3, and the cooled cooling water is returned to the water jacket 201 of the motor unit 4 again.

  The vehicle grill device 3 has a grill shutter 301 provided in a grill opening 302 at the front end of the vehicle body, and plate-like fins extending in the left-right direction of the vehicle body are arranged in the vertical direction of the vehicle body. By driving the configured grill shutter driving unit 303 (see FIG. 2), the grill shutter driving unit 303 is driven to a predetermined opening degree between the fully open position shown in the upper diagram of FIG. 1 and the fully closed position shown in the lower diagram.

  In a state where the grill shutter 301 is opened, air flows from the grill opening 302 to the rear of the vehicle body by running wind or suction air generated by driving the fan 204, and passes through the outdoor heat exchanger 104 and the radiator 203. Thereby, the refrigerant of the air conditioner 1 (heat pump cycle) and the cooling water of the motor cooling device 2 (cooling cycle) are cooled. However, when the grill shutter 301 is closed, this cooling action is reduced. Instead, the air resistance during vehicle travel is reduced by the amount of closing the grill shutter 301, and the power consumption (power consumption rate) of the motor unit 4 is improved.

  FIG. 2 is a block diagram showing a main part of the control device for the electric vehicle of this example. The electric vehicle of this example includes a vehicle controller 5 that controls the running state of the vehicle, and an air conditioner controller 115 that controls the air conditioning state of the room by the air conditioner 1. The vehicle controller 5 and the air conditioner controller 115 communicate with each other. While the calculated and read values are communicated to the other.

  The vehicle controller 5 includes a vehicle speed sensor 501 that detects the vehicle speed of the electric vehicle and an accelerator opening sensor 502 that detects the accelerator opening, and a target load corresponding to the actual vehicle speed and the accelerator opening is input. In addition, a predicted power calculation unit 503 that calculates the predicted power of the motor unit 4 with respect to a target load corresponding to the accelerator opening, a power calculation unit 504 that calculates the actual power of the motor unit 4, and the predicted power calculation unit 503, An operation control unit 505 that controls the motor unit 4 and the grill device 3 based on the calculation result of the power calculation unit 504 is provided. The calculation result of the operation control unit 505 is output to the motor controller 506 of the motor unit 4 and the grill shutter driving unit 303 of the grill device 3.

  On the other hand, the air conditioner controller 115 includes an outside air temperature sensor 116 that detects the temperature outside the vehicle (outside the room and outside the motor room), a temperature sensor 117 that detects the temperature inside the motor room, an indoor instrument panel, and the like. And an operation command such as the outside air temperature, the temperature in the motor room, and the target room temperature is input. The air conditioner controller 115 executes a predetermined calculation according to these input signals, and outputs the calculation result to the compressor 101, the fan motor 111M, the first expansion valve 103, the second expansion valve 106, and the drive unit 205 of the fan 204. .

Next, the control operation of this example will be described with reference to the flowchart of FIG.
In step S1, it is assumed that the vehicle is ready to travel and the grille shutter 301 is closed.

  In step S <b> 2, the outside air temperature To is detected by the outside air temperature sensor 116 and output to the air conditioner controller 115. In step S <b> 3, the motor room temperature sensor 117 detects the motor room temperature Tmr and outputs it to the air conditioner controller 115. In step S <b> 4, the vehicle speed V is detected by the vehicle speed sensor 501, the accelerator opening is detected by the accelerator opening sensor 502, and is output to the vehicle controller 5.

  In step S <b> 5, the predicted power calculation unit 503 calculates the requested motor torque Tm from the vehicle speed V and the accelerator opening read into the vehicle controller 501, and outputs a command signal for the requested motor torque Tm to the motor controller 506. Further, the actual motor rotation speed Nm detected by the motor controller 506 is output to the vehicle controller 5.

  In step S6, the air conditioner controller 115 sets the operating conditions such as the set temperature by an input operation of the operation switch 118 of the air conditioner 1 and instructs the start of the air conditioning operation. And air conditioning operation is performed based on the detected environmental conditions and operating conditions. The air conditioner controller 115 calculates a target blowing temperature of the conditioned air for maintaining the passenger compartment at a set temperature, and air-conditions the passenger compartment based on the calculated target blowing temperature and setting of operating conditions.

  When the air conditioner 1 operates as a heating device, there is a relationship shown in FIG. 4 between the air temperature passing through the outdoor heat exchanger 104 and the power consumption (air conditioner power consumption) of the compressor motor that drives the compressor 101. is there. That is, the higher the air temperature, the lower the power consumption of the compressor motor that drives the compressor 101, and the lower the air temperature, the higher the power consumption of the compressor. Therefore, the air conditioner power consumption Wao corresponding to the outside air temperature To read into the air conditioner controller 115 and the air conditioner power consumption Wamr corresponding to the motor room temperature Tmr similarly read into the air conditioner controller 115 are used using the control map shown in FIG. To calculate. Then, the difference ΔWa = Wamr−Wao of the air conditioner power consumption due to the difference between them, that is, the grille shutter 301 is closed is calculated. When the outside air temperature is higher than the temperature inside the motor room, ΔWa is a positive value, that is, power consumption increases. When the outside air temperature is lower than the temperature inside the motor room, ΔWa is a negative value, that is, power consumption. Will decrease.

In step S7, the reduction power ΔWg of the power consumption of the motor unit 4 by closing the grill shutter 301 is calculated. Here, the air resistance force Fa of the vehicle varies depending on the vehicle speed V, and is expressed by the following formula (1) when the air density ρ, the air resistance coefficient Cd, and the projected area A on the front surface of the vehicle are used.
[Equation 1]
Air resistance Fa = (1/2) · ρ · Cd · A · V ² (1)

  By closing the grille shutter 301, the air resistance coefficient Cd becomes Cd ′ (Cd ′ <Cd), and the relationship between the vehicle speed and the reduced power of the motor unit 4 due to closing the grille shutter 301 is as shown in FIG. That is, as the grille shutter 301 is closed, the air resistance of the vehicle decreases and the power consumption of the motor unit 4 decreases. However, as the vehicle speed V increases, the amount of power consumption reduction of the motor unit 4 increases. Therefore, referring to FIG. 5, in a vehicle traveling at vehicle speed V, power consumption reduction amount ΔWg due to closing grille shutter 301 is calculated as described above. Since the air density ρ in the above formula (1) varies depending on the outside air temperature as shown in FIG. 9, the outside air temperature detected by the outside air temperature sensor 116 is substituted into FIG. It may be calculated by taking into account the amount of change due to temperature.

In step S8, a lost work amount ΔWm due to a change in motor efficiency is calculated. The magnet used in the motor has a temperature characteristic as shown in FIG. That is, the magnetic flux Ψm increases as the motor unit 4 (correlated to the temperature in the motor room in this example) is lower. Further, when the motor torque Tm and the magnetic flux Ψm are the number of pole pairs Pn, the d-axis and q-axis components id and iq of the armature current, and the inductances Ld and Lq of the d-axis and q-axis, the following equation (2) There is a relationship.
[Equation 2]
Tm = Pn · Ψm · iq + Pn (Ld−Lq) id · iq (2)

In the above equation (2), the number of pole pairs Pn and the inductances Ld and Lq are constants depending on the motor. Therefore, from equation (2) and FIG. 6, the magnetic flux Ψm increases and the magnetic flux Ψm increases as the temperature of the motor unit 4 decreases. If so, the currents id and iq can be reduced when the same motor torque Tm is required. The motor power consumption Wm has the relationship of the following formula (3) when the motor torque Tm and the motor rotation speed Nm are used. Therefore, when the same torque and the same rotation speed are requested, the temperature of the motor unit 4 The lower the value, the lower the motor power consumption Wm.
[Equation 3]
Wm = Tm · Nm · (2π / 60) (3)

  For this reason, when there is a temperature difference between the outside air temperature To and the motor room internal temperature Tmr, the motor power consumption changes due to the change in the heat exchange amount in the radiator 203, so the loss work amount ΔWm due to this motor efficiency change is calculated. To do. The temperature of the motor unit 4 is detected by the temperature sensor 117 in the motor room, but a temperature sensor may be provided in the motor unit 4 and read from this temperature sensor.

In step S9, the relationship between the increase amount ΔWa of the air conditioner power consumption calculated in steps S6, S7, and S8, the decrease amount ΔWg of the power consumption of the motor unit 4 by the grille shutter 301, and the lost work amount ΔWm due to the motor efficiency change, The determination is made by the following equation (4).
[Equation 4]
ΔWg + ΔWm−ΔWa> 0 (4)

  If the left side of Expression (4) is 0, the sum of the two reduction amounts ΔWg and ΔWm becomes equal to one increase amount ΔWa, so that the power consumption of the entire vehicle can be reduced. Basically it may be 0, but can be changed according to the situation. In step S9, if ΔWg + ΔWm−ΔWa> 0, the process proceeds to step S10, and if ΔWg + ΔWm−ΔWa ≦ 0, the process proceeds to step S11.

  FIG. 7 shows a case where the horizontal axis represents the motor rotation speed Nm, the vertical axis represents the motor torque Tm, and a temperature difference occurs between the outside air temperature and the motor room temperature, and the motor room temperature falls below a certain temperature from the outside air temperature (in this case) , To = 5 ° C., Tmr = −5 ° C.), a loss work amount ΔWm due to a change in motor efficiency is calculated from To, Tmr, Tm, Nm, and a reduction amount ΔWg of power consumption due to a decrease in air resistance by the grille shutter 301 according to the vehicle speed. Is a graph in which the total reduction amount obtained by adding is shaded, and the value of ΔWm + ΔWg increases toward the right and upper sides of the graph. On the other hand, the increase amount ΔWa of the air-conditioner power consumption due to the difference between the outside air temperature To and the motor room internal temperature Tmr can be shown by line A in FIG. . That is, since ΔWg + ΔWm> ΔWa in the area on the upper right side of the A line indicating the increase amount ΔWa of the air conditioner power consumption, closing the grille shutter 301 reduces the overall power consumption, while the lower left side of the A line. Since ΔWg + ΔWm <ΔWa in the region, opening the grille shutter 301 reduces the overall power consumption.

  In step S10, since ΔWg + ΔWm−ΔWa> 0 in step S9, a command signal is output from the operation control unit 505 of the vehicle controller 5 to the grill shutter driving unit 303 so as to close the grill shutter 301. On the other hand, in step S11, since ΔWg + ΔWm−ΔWa ≦ 0 in step S9, a command signal is output from the operation control unit 505 of the vehicle controller 5 to the grill shutter driving unit 303 so as to open the grill shutter 301.

  In the electric vehicle of the present invention, when a reduction gear (power transmission device) is provided between a motor that is a driving source for driving and a drive wheel, the power consumption of the reduction gear may be taken into consideration. Lubricating oil circulates in the reduction gear, and power is consumed by the circulating actuator of this oil. However, since the lubricating oil increases in viscosity due to a decrease in temperature, the power consumption of the circulating actuator increases as the temperature decreases.

  FIG. 8 is a graph in which the viscosity of oil supplied to the speed reducer increases as the temperature in the speed reducer decreases, and the increase amount ΔWfg of the power consumption of the speed reducer is added to ΔWa in FIG. The B line is ΔWa + ΔWfg, and the amount of increase in power consumption is greater than that of the A line (only ΔWa) shown in FIG. 7, so that the threshold value for controlling the opening and closing of the grille shutter 301 is shifted to the upper right. In step S9 in FIG. 3, the line B may be compared with the sum of the power consumption reduction amounts ΔWm + ΔWg, that is, the opening / closing of the grille shutter 301 may be determined by the equation ΔWg + ΔWm−ΔWa−ΔWfg> 0.

In the embodiment described above, the increase / decrease amount of the power consumption when the grill shutter 301 is fully closed is determined. However, in the present invention, the grill opening 302 is not necessarily fully closed by the grill shutter 301. That is, as shown in FIG. 10, even when the grill shutter 301 is slightly opened, the air resistance is reduced, and the power consumption of the motor unit 4 is thereby reduced. Furthermore, by introducing outside air into the motor room, it is possible to bring the motor room temperature Tmr closer to the outside temperature To. Then, for example, by multiplying the reduction amount ΔWg of the motor power consumption when fully closed by an air resistance reduction allowance k ₀ (X) (where 0 <x <1) with respect to the aperture ratio X, power consumption by the grill opening 302 is obtained. Can be calculated by the following equation (5).
[Equation 5]
ΔWg ′ = ΔWg × k ₀ (x) (5)

  (1) As described above, according to the vehicle power consumption control device of this example, the amount of change ΔWg in the motor power consumption due to the variation in the air resistance Fa of the vehicle due to the blockage of the grill opening 302 and the grill opening 302. Change in power consumption of the air-conditioning apparatus 1 due to change in the cooling power of the outdoor heat exchanger 104 caused by blockage of the grille opening 302 and change amount ΔWm of the motor power consumption due to change in motor efficiency of the motor due to blockage of the motor The sum ΔWg + ΔWm−ΔWa of the amount ΔWa is obtained, and when this value becomes a positive value, the grill opening 302 is closed, and when it becomes 0 or a negative value, the grill opening 302 is opened. Therefore, it is possible to set the optimum power consumption in consideration of the fluctuation of the motor efficiency accompanying the temperature change of the motor unit 4, and the battery can be extended in life and the cruising distance can be extended.

  (2) Further, according to the vehicle power consumption control device of this example, the outside air temperature is detected by the outside air temperature sensor, and the air resistance of the vehicle is obtained from the air density corresponding to the temperature, so that the grill opening 302 is blocked. The change amount ΔWg of the motor power consumption due to the variation in the air resistance of the vehicle can be obtained more accurately.

  (3) Further, according to the vehicle power consumption control device of this example, the change amount ΔWg of the motor power consumption due to the fluctuation of the air resistance Fa of the vehicle, the change amount ΔWm of the motor power consumption due to the fluctuation of the motor efficiency of the motor, The sum ΔWg + ΔWm−ΔWa−ΔWfg is calculated by adding the amount of change ΔWfg of the power consumption of the speed reducer to the amount of change ΔWf of the power consumption of the air conditioner 1 due to the change in the cooling capacity of the outdoor heat exchanger 104, and this value is positive. When the value becomes, the grill opening 302 is closed, and when the value becomes 0 or negative, the grill opening 302 is opened. Therefore, it is possible to set the power consumption more optimally by adding the fluctuation of the viscosity of the lubricating oil of the speed reducer to the fluctuation of the motor efficiency due to the temperature change of the motor unit 4, and the battery can be extended in life and the cruising distance can be extended. it can.

  (4) Moreover, according to the vehicle power consumption control device of this example, since the control signal with an opening ratio of 0 to 100% is output to the grill device in addition to the fully closed or fully opened state, As a result, finer control can be executed.

  The outdoor heat exchanger 104 corresponds to a heat exchanger according to the present invention, and the vehicle controller 5 corresponds to a control unit according to the present invention.

DESCRIPTION OF SYMBOLS 1 ... Air conditioning apparatus 101 ... Compressor 102 ... Indoor heat exchanger 103 ... 1st expansion valve 104 ... Outdoor heat exchanger 105 ... Switching valve 106 ... 2nd expansion valve 107 ... Evaporator 108 ... Accumulator 109 ... Refrigerant piping 110 ... Air conditioning unit Case 111 ... Blower 111M ... Fan motor 112 ... Intake door 113 ... Temperature adjustment door 114 ... Bypass 115 ... Air conditioner controller 116 ... Outside air temperature sensor 117 ... Temperature sensor in motor room 118 ... Operation switch 2 ... Motor cooling device 201 ... Water jacket DESCRIPTION OF SYMBOLS 202 ... Pump 203 ... Radiator 204 ... Fan 205 ... Fan drive part 3 ... Grill apparatus 301 ... Grille shutter 302 ... Grille opening part 303 ... Grille shutter drive part 4 ... Motor unit 5 ... Vehicle controller 501 ... Vehicle speed sensor S502 ... Accelerator opening sensor 503 ... Predictive power calculation unit 504 ... Power calculation unit 505 ... Operation control unit 506 ... Motor controller

Claims (8)

Using a motor as a driving source,
An air conditioner including a heat exchanger disposed in a grill opening at a front end of the vehicle;
A grill device that opens and closes the grill opening, introduces air passing through the heat exchanger with the grill opening open, and reduces the air resistance of the vehicle with the grill opening closed;
In a vehicle provided with a motor cooling device for cooling the motor,
A vehicle power consumption control device for controlling power consumed in the vehicle,
The amount of change in motor power consumption due to fluctuations in the air resistance of the vehicle due to blockage of the grill opening, and the amount of change in motor power consumption due to fluctuations in motor efficiency of the motor due to blockage of the grill opening, Based on the sum total of the amount of change in power consumption of the air conditioner due to the change in the cooling capacity of the first heat exchanger due to the blockage of the grill opening, the grill apparatus opens and closes the grill opening. A vehicle power consumption control device comprising a control means for controlling.   2. The vehicle power consumption control device according to claim 1, wherein the air conditioner includes a heating function based on a heat pump cycle, and a motor room temperature sensor that detects a temperature of a motor room in which the motor is disposed.   The vehicle control device according to claim 1, wherein the control unit closes the grill opening when the sum is a positive value and opens the grill opening when the sum is a negative value. Power consumption control device. A vehicle speed sensor for detecting a traveling speed of the vehicle;
The said control means calculates the variation | change_quantity of the motor power consumption by the fluctuation | variation of the air resistance of the said vehicle resulting from obstruction | occlusion of the said grill opening part based on the running speed detected by the said vehicle speed sensor. The vehicle power consumption control device according to any one of the above. An outside air temperature sensor for detecting the outside air temperature of the vehicle;
The vehicle power consumption control device according to claim 4, wherein the control means calculates an air density based on an outside air temperature detected by the outside air temperature sensor, and calculates an air resistance of the vehicle based on the air density. A motor temperature sensor for directly or indirectly detecting the temperature of the motor;
The said control means calculates the variation | change_quantity of the motor power consumption by the fluctuation | variation of the motor efficiency of the said motor resulting from obstruction | occlusion of the said grill opening part based on the temperature of the said motor detected by the said motor temperature sensor. The power consumption control apparatus for vehicles as described in any one of -5. The vehicle includes a reduction gear connected to the output shaft of the motor, an electric actuator that supplies lubricating oil to the reduction gear, and an oil temperature sensor that directly or indirectly detects the temperature of the lubricating oil,
The control means includes
Based on the oil temperature detected by the oil temperature sensor, the amount of change in power consumption of the speed reducer is calculated,
The amount of change in motor power consumption due to fluctuations in the air resistance of the vehicle due to blockage of the grill opening, and the amount of change in motor power consumption due to fluctuations in motor efficiency of the motor due to blockage of the grill opening, Based on the sum of the amount of change in the power consumption of the air conditioner due to the change in the cooling capacity of the first heat exchanger due to the blockage of the grill opening, plus the amount of change in the power consumption of the speed reducer, The vehicular power consumption control device according to any one of claims 1 to 6, wherein opening and closing of the grill opening by the grill device is controlled.   The vehicle power consumption control device according to any one of claims 1 to 7, wherein the control means outputs a control signal for setting an opening ratio of the grill opening to 0 to 100% to the grill device. .