JP5385041B2 - Electric vehicle air conditioner - Google Patents

Description

  The present invention relates to an air conditioner for an electric vehicle that is mounted on an electric vehicle equipped with a battery that can be charged by an external power source and performs air conditioning in the vehicle interior.

  Conventionally, as an electric vehicle provided with a rechargeable battery (secondary battery) and an electric motor driven by the battery, there are EV (Electric Vehicle) and PHEV (Plug-in Hybrid Electric Vehicle). In any type of electric vehicle, when the remaining capacity (SOC) of the battery decreases, the battery is charged using a commercial power source for home use or a charging device (external power source) of a quick charging stand. Yes. In PHEV, the battery is normally charged by driving the engine. However, depending on the remaining capacity of the battery, the battery may be charged by using a charging device or the like without driving the engine.

  In such an electric vehicle, the air conditioner can be driven using the external power source when the battery is charged by the external power source. That is, it is possible to cover the driving power of the air conditioner from an external power source during charging, to cool or heat the air conditioner before boarding, and to adjust the temperature in the vehicle interior to an appropriate temperature according to the departure time. As an electric vehicle having such an air conditioning function, a so-called pre-air conditioning function, for example, a technique described in Patent Document 1 is known.

  The technology described in Patent Document 1 aims to reduce energy consumption before boarding, and is a fully automatic air conditioner that can automatically control all of temperature adjustment, air volume adjustment, air outlet switching, inside / outside air switching, and the like. Pre-conditioning function is added. Thereby, at the time of operation | movement of the pre air conditioning function, in order to improve air-conditioning efficiency, it can switch to an inside air circulation mode automatically.

JP-A-5-147420

  However, according to the technique described in the above-mentioned Patent Document 1, since the pre-air conditioning function is added to the fully automatic air conditioner, the entire air conditioner is very expensive and can be applied to a less expensive commercial vehicle or the like. Is difficult. On the other hand, in commercial vehicles and the like, since there are many opportunities to be exposed to hot weather during work, the addition of a pre-air conditioning function is desired.

  In order to apply the pre-air conditioning function to a commercial vehicle or the like, it is necessary to devise so that the pre-air conditioning function can be added to a cheaper air conditioner. As an air conditioner mounted on commercial vehicles, etc., many manual air conditioners that manually operate all of temperature adjustment, air volume adjustment, air outlet switching, and inside / outside air switching, etc. are adopted, for example, automatic switching between inside and outside air I can't. If the pre-air conditioning function is operated with the outside air introduced, the vehicle interior cannot be kept at the appropriate time at the departure time in environments where the outside air temperature is high and the sunlight is strong (such as under hot weather). Useless power is consumed.

  An object of the present invention is to provide an air conditioner for an electric vehicle that can suppress wasteful power consumption while adding a pre-air conditioning function to an inexpensive air conditioner.

  An air conditioner for an electric vehicle according to the present invention is an air conditioner for an electric vehicle that is mounted on an electric vehicle equipped with a battery that can be charged by an external power source, and that performs air conditioning of the vehicle interior. The air conditioner is turned on / off. An air-conditioning control means for controlling, an air-conditioning state switching means provided on the operation panel in the passenger compartment and manually operated by an operator, and an on / off switch connected to the air-conditioning control means for turning on / off the air-conditioning apparatus. A wireless reception means for receiving an off signal, a wireless transmission means for transmitting the on / off signal to the wireless reception means, and a temperature of air flowing through the air outlet of the air conditioner connected to the air conditioning control means The air-conditioning control means turns on the power supply of the air conditioner based on the ON signal, and the change state of the temperature detected by the air-outlet temperature detection means Depending characterized by off control the power of the air-conditioning apparatus.

  In the air conditioner for an electric vehicle according to the present invention, the air conditioning control means is configured such that the air outlet temperature detected by the air outlet temperature detecting means after the elapse of a predetermined time after the power of the air conditioner is turned on is The power supply of the air conditioner is controlled to be off when the temperature is outside a predetermined temperature range set according to the outlet temperature detected by the outlet temperature detecting means when the power is turned on.

  In the air conditioner for an electric vehicle according to the present invention, the air conditioning control means is configured such that when the air outlet temperature detected by the air outlet temperature detecting means when the air conditioner is powered on is within a suitable temperature range in the vehicle interior based on the ON signal. The power supply of the air conditioner is controlled to be turned off.

  The air conditioner for an electric vehicle according to the present invention is characterized in that the air conditioning control means controls the power supply of the air conditioner to be on when the external power source is connected to the electric vehicle.

Air conditioning system for an electric vehicle according to the present invention, the air conditioning state switching means air volume adjustment switch, outlet switching switch, outside air switching switch, temperature adjustment switch, wherein Rukoto consist A / C switch.

  According to the air conditioning apparatus for an electric vehicle of the present invention, the air conditioning control means for controlling on / off of the power supply of the air conditioning apparatus, the air conditioning state switching means provided on the operation panel in the passenger compartment and manually operated by the operator, Connected to the control means, connected to the air conditioning control means, wireless receiving means for receiving an on / off signal for turning on / off the air conditioner, wireless transmitting means for transmitting the on / off signal to the wireless receiving means, An air outlet temperature detecting means for detecting the temperature of the air flowing through the air outlet of the air conditioner, and the air conditioning control means controls the power supply of the air conditioner on based on the ON signal, and the temperature detected by the air outlet temperature detecting means. The power supply of the air conditioner is turned off according to the change state. Therefore, for example, when the state of the air conditioning state switching means is appropriate and the change state of the detected temperature is normal, the air conditioner power supply is continuously turned on, and the temperature in the passenger compartment is adjusted to the appropriate temperature according to the departure time. be able to. On the other hand, when the state of the air conditioning state switching means is inappropriate and the change state of the detected temperature is abnormal, the power of the air conditioner can be turned off. Therefore, wasteful power consumption can be suppressed while adding a pre-air conditioning function to an inexpensive air conditioner.

  According to the air conditioner for an electric vehicle of the present invention, the air conditioning control means is configured such that the air outlet temperature detected by the air outlet temperature detecting means after the elapse of a predetermined time after the power on of the air conditioner is turned on is the power on of the air conditioner. When the air temperature is outside a predetermined temperature range set according to the air outlet temperature detected by the air outlet temperature detecting means, the air conditioner is turned off. Therefore, the change state of the detected temperature by the outlet temperature detecting means can be managed by the preset time and temperature, and more wasteful power consumption can be suppressed.

  According to the air conditioner for an electric vehicle of the present invention, the air conditioner control means is configured such that when the air outlet temperature detected by the air outlet temperature detecting means when the air conditioner is powered on is within an appropriate temperature range in the vehicle interior based on the ON signal. Turn off the power. Therefore, when the passenger compartment is at a suitable temperature, the air conditioner is not continuously operated, so that wasteful power consumption can be suppressed.

  According to the air conditioning apparatus for an electric vehicle of the present invention, the air conditioning control means turns on the power of the air conditioning apparatus when an external power source is connected to the electric vehicle. Therefore, since the remaining capacity of the battery is not reduced, the travel distance of the electric vehicle can be extended. Further, it is possible to prevent the battery charging time from being prolonged or the battery life from being shortened.

According to the air conditioning apparatus for an electric vehicle of the present invention, the air conditioning state switching means, the air volume adjustment switch, outlet switching switch, outside air switching switch, temperature adjustment switch, Runode consist A / C switch, manual air conditioning of the basic A pre-air conditioning function can be added with almost no change in structure. Therefore, the cost increase of the entire air conditioner can be minimized.

It is the schematic which shows the electric vehicle carrying the air conditioner which concerns on this invention. It is explanatory drawing explaining the structure of the air conditioner of FIG. It is a flowchart figure which shows the control content of the air-conditioning controller which concerns on 1st Embodiment. It is a table | surface which shows the example of the operation pattern of each switch, and the vehicle interior temperature after predetermined time. (A), (b) is a graph which shows the relationship between vehicle interior temperature [degreeC] and time [t] based on FIG. It is a flowchart figure which shows the control content of the air-conditioning controller which concerns on 2nd Embodiment.

  Hereinafter, a first embodiment of the present invention will be described in detail with reference to the drawings. FIG. 1 is a schematic view showing an electric vehicle equipped with an air conditioner according to the present invention, and FIG. 2 is an explanatory diagram for explaining the structure of the air conditioner shown in FIG.

  As shown in FIG. 1, the electric vehicle 10 includes a pair of front wheels 11 and a pair of rear wheels 12. Each front wheel 11 is a drive wheel, and a motor generator (electric motor) 15 is connected to a drive shaft 13 that drives each front wheel 11 via a gear train 14 having a constant reduction ratio. Thus, the electric vehicle 10 is a front-wheel drive vehicle that drives each front wheel 11.

  The motor generator 15 is formed by a three-phase AC type synchronous motor. The motor generator 15 is rotationally driven by the supply of electric power from a high voltage battery (battery) 16 mounted on the lower part of the rear seat (not shown) of the electric vehicle 10. Here, as the high voltage battery 16, a lithium ion battery which is a secondary battery is adopted, and the high voltage battery 16 outputs DC power of 400V, for example.

  An inverter 18 is connected between the motor generator 15 and the high voltage battery 16 via a pair of power supply lines 17a and 17b. Inverter 18 converts a direct current from high-voltage battery 16 into a three-phase alternating current and supplies electric power to motor generator 15. On the other hand, the motor generator 15 functions as a generator during braking of the electric vehicle 10, collects the kinetic energy of the electric vehicle 10 as electric energy, and charges the high voltage battery 16.

  In addition to the high voltage battery 16, a low voltage battery 19 is mounted on the electric vehicle 10. The low voltage battery 19 supplies, for example, DC 12V power to drive an audio device (not shown) mounted on the electric vehicle 10, a blower fan 38 of the manual air conditioner 30, and the like. The low voltage battery 19 is charged by the power of the high voltage battery 16 stepped down by the DC / DC converter 20.

  A pair of main relays 21a and 21b are provided between the high voltage battery 16 and the inverter 18 of each of the power supply lines 17a and 17b. The main relays 21 a and 21 b are configured to switch between the high voltage battery 16 and the inverter 18 to a connected state or a disconnected state, and the main relays 21 a and 21 b are driven from an EVCU (vehicle controller) 22. Driven by the signal.

  The on-vehicle charger 23 is mounted on the electric vehicle 10, and the on-vehicle charger 23 boosts an external power source (100 V / 200 V) such as a commercial power source and converts it into a DC current of 400 V, for example. A pair of charging lines 24a and 24b are connected to the output side of the in-vehicle charger 23, and the charging lines 24a and 24b are connected to the power supply lines 17a and 17b, respectively. Each charging line 24a, 24b is provided with a pair of charging relays 25a, 25b, and each charging relay 25a, 25b is driven by a drive signal from the EVCU 22. Thus, the high voltage battery 16 can be charged from the external power source via the in-vehicle charger 23 by driving the charging relays 25 a and 25 b by the EVCU 22.

  One end side (left side in the figure) of the charging cable 26 can be electrically connected to the input side of the in-vehicle charger 23. A power supply connector 26a that can be attached to the power receiving connector 10a of the electric vehicle 10 is provided on one end side of the charging cable 26, and a plug receiver such as a household outlet is provided on the other end side (right side in the figure) of the charging cable 26. A plug 26b that can be plugged into (not shown) is provided.

  A BCU (battery controller) 27 is connected to the high voltage battery 16, and the BCU 27 monitors / manages the charge / discharge state of the high voltage battery 16. The BCU 27, the in-vehicle charger 23, the inverter 18, the EVCU 22, and the DC / DC converter 20 can communicate information with each other via a communication network (CAN) 28. For example, information such as the remaining capacity of the high voltage battery 16 is transmitted to the EVCU 22 via the communication network 28. Here, the EVCU 22 and the BCU 27 include a CPU that calculates a control signal, and also includes a ROM that stores a control program, an arithmetic expression, map data, and a RAM that temporarily stores data.

  As shown in FIG. 2, the electric vehicle 10 is equipped with a manual air conditioner 30 as an air conditioner. The manual air conditioner 30 performs air conditioning of the passenger compartment (not shown), and the passenger compartment is comfortably operated by a cooling operation in the summer and a heating operation in the winter, for example, by the operation of the operator (driver). Can be kept at temperature / humidity.

  The manual air conditioner 30 has an operation panel 31 provided on a center console or the like (not shown) in the passenger compartment. The operation panel 31 is provided with an air volume adjustment switch 32, an air outlet changeover switch 33, an inside / outside air changeover switch 34, a temperature adjustment switch 35, and an A / C switch 36 as air conditioning state switching means. The air volume adjustment switch 32, the air outlet changeover switch 33 and the temperature adjustment switch 35 are dial type switches, the inside / outside air changeover switch 34 is a lever type switch, and the A / C switch 36 is a push type switch. Each of the switches 32 to 36 is manually operated by an operator.

  The manual air conditioner 30 includes a hollow air duct 37 provided inside a dashboard or the like (not shown). Air flows in the air duct 37, and a blower fan 38 is provided on the inlet side (left side in the figure) of the air duct 37. Further, an air outlet 39 is provided on the outlet side (right side in the figure) of the air duct 37, and the outlet side of the air outlet 39 is branched toward a plurality of air outlets.

  The blower fan 38 is electrically connected to the air volume adjustment switch 32 of the operation panel 31. The blower fan 38 is rotationally driven by the electric power from the low voltage battery 19 (see FIG. 1) by operating the air volume adjustment switch 32, and has five levels (dial positions 1 to 5) in the direction indicated by the arrow (1) in the figure. To adjust the rotation speed. Thereby, the air volume by the blower fan 38 is adjusted in five stages.

  In the vicinity of the blower fan 38 of the air duct 37, there is provided an inside / outside air switching door 40 for switching between the inside air circulation for circulating the air in the vehicle interior into the air duct 37 and the outside air introduction for introducing the air outside the vehicle interior into the air duct 37. ing. The inside / outside air switching door 40 is connected to the inside / outside air switching switch 34 of the operation panel 31 via, for example, a link mechanism (not shown). As a result, as shown by the arrow (2) in the figure, the inside / outside air switching door 40 is swung by operating the inside / outside air switching switch 34, and the inside air circulation (solid arrow in the figure) and outside air introduction (broken arrow in the figure). ) And can be switched.

  An evaporator (evaporator) 41 is provided near the blower fan 38 in the air duct 37 so as to close the air duct 37. The evaporator 41 cools the air from the blower fan 38 and dehumidifies moisture contained in the air during the cooling operation of the manual air conditioner 30. An expansion valve (expansion valve) 43, a condenser (condenser) 44, and an electric compressor 45 are connected to the evaporator 41 via a steel pipe 42. The evaporator 41, the pipe 42, the expansion valve 43, the condenser 44, and the electric compressor 45 each form a closed circuit, and a predetermined amount of refrigerant gas (for example, HFC 134a) is sealed inside.

  The electric compressor 45 is electrically connected to the A / C switch 36 of the operation panel 31. The electric compressor 45 is rotationally driven by the electric power from the high voltage battery 16 (see FIG. 1) by turning on the A / C switch 36, whereby the refrigerant gas circulates in the closed circuit and passes through the evaporator 41. The air to be cooled / dehumidified. Thus, the cooling device of the manual air conditioner 30 is a so-called vapor compression type cooling device.

  An electric heater 46 is provided at a substantially central portion in the air duct 37 so as to close substantially half of the air duct 37. The electric heater 46 heats the air from the blower fan 38 during the heating operation of the manual air conditioner 30. The electric heater 46 is formed by electric resistance (not shown), and generates heat when the air conditioner controller 50 turns on the power supply of the manual air conditioner 30. Thus, the heating device of the manual air conditioner 30 is a so-called electric heating device.

  In the vicinity of the electric heater 46, the air that has passed through only the evaporator 41 and the air that has passed through both the evaporator 41 and the electric heater 46 are mixed (see the shaded arrows in the figure), and the temperature of the air downstream is adjusted. A mix door 47 is provided. The mix door 47 is connected to the temperature adjustment switch 35 of the operation panel 31 through, for example, a link mechanism (not shown). As a result, as shown by an arrow (3) in the figure, the mix door 47 is swung by operating the temperature adjustment switch 35, and the degree of air mixing, that is, the temperature of the air is adjusted.

  In the vicinity of the air outlet 39 in the air duct 37, a plurality of air outlet switching doors 48 (only two are shown in the figure) are provided for switching the locations of the air flowing through the air outlet 39. For example, there are a foot (FOOT), a front (FACE), a windshield (DEF), etc. Each outlet switching door 48 is connected to the outlet switching switch 33 of the operation panel 31 through, for example, a link mechanism (not shown). As a result, as shown by an arrow (4) in the figure, by operating the air outlet changeover switch 33, each air outlet changeover door 48 swings, and the air blowing location is located at the foot, front, Set to any position.

  In the vicinity of the air outlet 39, an air outlet temperature sensor (air outlet temperature detecting means) 49 for detecting the temperature of the air (blowing air) flowing through the air outlet 39 is provided. The outlet temperature sensor 49 is fixed to the air duct 37 and is formed by, for example, a thermistor. The air outlet temperature sensor 49 is connected to the air conditioning controller 50, and the temperature detected by the air outlet temperature sensor 49 (air outlet temperature) is output to the air conditioning controller 50.

  The manual air conditioner 30 has a pre-air conditioning function that allows the temperature in the passenger compartment to reach an appropriate temperature before boarding. The pre-air conditioning function is operated by an air-conditioning controller (air-conditioning control means) 50, and the air-conditioning controller 50 controls the power supply of the manual air-conditioner 30 on / off. A reception antenna (wireless reception means) 51 is connected to the air conditioning controller 50 via the communication network 28. The receiving antenna 51 receives an on / off signal for turning on / off the power supply of the manual air conditioner 30 from the air conditioner remote control (wireless transmission means) 52.

  The air-conditioning remote controller 52 is formed in a small size so that it can be carried by an operator. For example, the air-conditioning remote controller 52 transmits an on / off signal for turning on / off the manual air conditioner 30 to the receiving antenna 51 by operating from outside the passenger compartment. . Thereby, the power supply of the manual air conditioner 30 can be remotely controlled using the air conditioner remote controller 52.

  The air conditioning controller 50 is provided with a timer unit 53. The timer unit 53 has a clock function. By operating the air-conditioning remote controller 52 and setting the time when the pre-air conditioning function is desired to operate, the vehicle interior is automatically set to a suitable temperature at a desired time (departure time, etc.). can do. In addition, the timer unit 53 is provided with a counter function that counts the time during which the pre-air conditioning function is operated. The counter function is to forcibly stop the operation of the pre-air conditioning function when the pre-air conditioning function is not operating normally, thereby suppressing wasteful power consumption.

  The air conditioning remote controller 52 is provided with an operation button 54 and a display 55. By operating the operation button 54, an on / off signal is transmitted to the receiving antenna 51, or the clock function of the timer unit 53 is set. In addition, the display 55 displays the operation status (ON / OFF state, vehicle interior temperature, operation time, error information, etc.) of the pre-air conditioning function in real time.

  Next, the operation of the manual air conditioner 30 according to the first embodiment formed as described above will be described in detail with reference to the drawings. FIG. 3 is a flowchart showing the control contents of the air conditioning controller according to the first embodiment.

  As shown in FIG. 3, in step S1, it is determined whether or not the power supply of the manual air conditioner 30 is in an off state (whether F = 0) before the pre-air conditioning function is activated. If it is determined in step S1 that the manual air conditioner 30 is powered off (determined as yes), the process proceeds to step S2, and it is determined that the manual air conditioner 30 is powered on (determined as no). If so, the process proceeds to step S3.

  In step S <b> 2, it is determined whether or not the air conditioner remote controller 52 is turned on by the operator and an on signal is transmitted from the air conditioner remote controller 52, that is, whether or not the on signal is received by the receiving antenna 51. If it is determined in step S2 that the ON signal has been received by the receiving antenna 51 (yes determination), the process proceeds to step S4, and if it is determined that the ON signal has not been received by the receiving antenna 51 (no determination), the process proceeds to step S4. Proceed to S5.

  In step S4, based on the fact that the receiving antenna 51 has received the ON signal, the remaining capacity of the high voltage battery 16 is confirmed, and it is determined whether or not the pre-air conditioning function is operable. Here, the air conditioning controller 50 confirms the remaining capacity of the high voltage battery 16 based on the communication information from the BCU 27, and whether the remaining capacity of the high voltage battery 16 is equal to or greater than a predetermined value, that is, the remaining capacity capable of operating the pre-air conditioning function. Determine whether or not. In step S4, when the remaining capacity of the high voltage battery 16 is equal to or greater than a predetermined value (yes determination), the process proceeds to step S6, and when the remaining capacity of the high voltage battery 16 is less than the predetermined value (no determination), step is performed. Proceed to S7.

  In step S6, the main relays 21a and 21b are turned on based on the fact that the remaining capacity of the high voltage battery 16 is sufficient. In subsequent step S8, the manual air conditioner 30 is powered on (powered on) based on the on control of the main relays 21a and 21b. At this time, the air conditioning controller 50 turns on the power supply of the manual air conditioner 30 regardless of the operation pattern of the switches 32 to 36 of the operation panel 31.

  In subsequent step S9, the temperature K of the air outlet 39 immediately after the power supply of the manual air conditioner 30 is turned on (≈the temperature in the passenger compartment) is detected by the air outlet temperature sensor 49. In step S9, if the temperature K of the outlet 39 at the time of power-on (initial) is K <10 ° C., the process proceeds to step S10, and if K> 30 ° C., the process proceeds to step S11, where 10 ° C. < If K <30 ° C., the process proceeds to step S12.

  In step S10, assuming that the initial temperature K of the air outlet 39 is a low temperature of 10 ° C. or lower, a winter flag (F = 1) is set, and then the process proceeds to step S13. In step S11, assuming that the initial temperature K of the air outlet 39 is a high temperature of 30 ° C. or higher, a summer flag (F = 2) is set, and then the process proceeds to step S13.

  In step S12, it is not necessary to operate the pre-air conditioning function, that is, assuming that the initial temperature K of the air outlet 39 is within a predetermined temperature range (within the vehicle interior temperature range) 10 ° C. <K <30 ° C. Is notified of the “appropriate temperature in the vehicle interior”, and then the process proceeds to step S14. In step S14, the power supply of the manual air conditioner 30 is controlled to be off, and the process proceeds to step S15.

  In step S15, the main relays 21a and 21b are controlled to be turned off. In subsequent step S16, a flag (F = 0) indicating that the power supply of the manual air conditioner 30 is turned off is set. As a result, a message such as “the vehicle interior is suitable temperature” or “the pre-air conditioning function has been stopped” is displayed on the display 55 of the air-conditioning remote controller 52. In addition, after finishing the process of step S16, the return process which returns to step S1 is made.

  In step S13, the count value T by the counter function of the timer unit 53 is initialized (T = 0). In the subsequent step S17, the count value T is incremented by +1. In the subsequent step S18, it is determined whether or not the count value T has elapsed for a predetermined time (3 minutes), that is, whether or not 3 minutes have elapsed since the manual air conditioner 30 was turned on. If it is determined that three minutes have passed since the manual air conditioner 30 was turned on (yes determination), the process proceeds to step S19. On the other hand, if it is determined that three minutes have not passed since the manual air conditioner 30 was turned on (no determination), the process returns to step S17. Here, the predetermined time (3 minutes) in step S18 can be arbitrarily set (set to less than 3 minutes or more than 4 minutes) according to the capability of the manual air conditioner 30.

  In step S19, it is determined whether or not the winter flag is set, that is, whether or not F = 1. If it is determined that F = 1 (winter) (yes determination), the process proceeds to step S20. If it is determined that = 2 (summer season) (no determination), the process proceeds to step S21.

  In step S20, whether or not the current temperature K of the air outlet 39, that is, the temperature K of the air outlet 39 after 3 minutes have passed since the manual air conditioner 30 was turned on in step S8, is higher than 30 ° C. Determine. If it is determined in step S20 that the temperature K of the air outlet 39 is higher than 30 ° C. (yes determination), the temperature in the passenger compartment is sufficiently warmed, and the change state of the temperature detected by the air outlet temperature sensor 49 is normal. That is, assuming that the pre-air conditioning function (heating operation) is operating normally, return processing is returned to step S1.

  On the other hand, when it is determined to be no in step S20, that is, when the temperature K of the air outlet 39 is 30 ° C. or less (outside the predetermined temperature range) even though 3 minutes have elapsed since the manual air conditioner 30 was turned on. Advances to step S22. In step S22, the manual air conditioner 30 is turned off, assuming that the temperature rise in the passenger compartment is not sufficient and the change in the detected temperature of the outlet temperature sensor 49 is abnormal, that is, the pre-air conditioning function is not operating normally. Control (forced stop). Thereby, the remaining capacity of the high voltage battery 16 is suppressed from being wasted.

  Then, it progresses to step S23 and each main relay 21a, 21b is each controlled off. In the following step S24, it is determined that the operation pattern of each of the switches 32 to 36 is inappropriate, the air conditioning remote controller 52 is informed that “switch operation is inappropriate”, and the display 55 of the air conditioning remote controller 52 indicates “the operation of each switch is invalid. A message such as “Appropriate” or “Pre-conditioning function stopped” is displayed. Then, it progresses to step S25 and the operation | movement of the pre air conditioning function by the manual air conditioner 30 is complete | finished.

  In step S21, it is determined whether or not the current temperature K of the air outlet 39 is lower than 20 ° C. If it is determined in step S21 that the temperature K of the air outlet 39 is lower than 20 ° C. (yes determination), the temperature in the passenger compartment is sufficiently cooled, and the change state of the temperature detected by the air outlet temperature sensor 49 is normal. That is, assuming that the pre-air conditioning function (cooling operation) is operating normally, return processing is returned to step S1. On the other hand, if it is determined to be no (determined that the temperature is outside the predetermined temperature range) in step S21, the process proceeds to step S22, step S23, step S24, and step S25 as in the case of no determination in step S20.

  If F = 1 or F = 2 and it is determined yes in step S20 and step S21, the pre-air conditioning function is operating normally. That is, in the present embodiment, in step S9, the initial temperature K of the outlet 39 is detected. If the initial temperature K is lower than the predetermined temperature, it is determined that F = 1 (winter), and the manual air conditioner 30 is turned on. If the temperature K after the elapse of a predetermined time (after elapse of 3 minutes) from the control is higher than the predetermined temperature, “yes” is determined in step S20. If the initial temperature K of the air outlet 39 is higher than the predetermined temperature in step S9, it is determined that F = 2 (summer season), and the temperature K after the predetermined time has elapsed after the manual air conditioner 30 is turned on is the predetermined temperature. If it is lower than that, it is determined yes in step S21. In step S1 after the return process, it is determined as no.

  Thereafter, in step S3, it is determined whether or not the air conditioning remote controller 52 is operated by the operator and an off signal is transmitted from the air conditioning remote controller 52, that is, whether or not the off signal is received by the receiving antenna 51. In step S3, when it is determined that the OFF signal is received by the receiving antenna 51 (yes determination), the process proceeds to step S14, and when it is determined that the OFF signal is not received by the receiving antenna 51 (no determination), the process returns. Processing is done. That is, when the pre-air conditioning function is operating normally, the pre-air conditioning function continues to operate until the air-conditioning remote controller 52 is turned on and then turned off.

  In step S2, it is determined as no, that is, when the manual air conditioner 30 is turned off (F = 0) and the air conditioner remote controller 52 is not operated by the operator, the external power supply is being connected in step S5. It is determined whether or not. In step S5, determination is made based on whether or not the power feeding connector 26a is connected to the power receiving connector 10a shown in FIG. 1 and the plug 26b is inserted into a plug receptacle such as a household outlet. Here, the determination as to whether or not the external power supply is connected is made based on the charging information input from the EVCU 22 to the air conditioning controller 50 via the communication network 28.

  If it is determined in step S5 that the external power supply is connected (yes determination), the process proceeds to step S26, and if it is determined that the external power supply is not connected (no determination), the process proceeds to step S14.

  In step S26, based on the clock function of the timer unit 53, it is determined whether it is time to operate the pre-air conditioning function set by the operator. If it is determined in step S26 that the pre-air conditioning function setting time is reached (yes determination), the process proceeds to step S4. If it is determined that it is not yet the pre-air conditioning function setting time (no determination), step S14 is performed. Proceed to

  In step S7, based on the determination in step S4 (determination that the remaining capacity of the high-voltage battery 16 is less than a predetermined value), the air conditioning remote controller 52 is informed that “the battery capacity is insufficient” and the display of the air conditioning remote controller 52 is displayed. In 55, a message such as “the battery capacity is insufficient” or “the pre-air conditioning function cannot be operated” is displayed. After completing the process in step S7, the process proceeds to step S14.

  Next, a specific operation of the pre-air conditioning function by the manual air conditioner 30 will be described in detail with reference to the drawings. FIG. 4 is a table showing an example of the operation pattern of each switch and the vehicle interior temperature after a predetermined time. FIGS. 5A and 5B show the vehicle interior temperature [° C.] and time [t] based on FIG. The graph which shows the relationship of each is represented.

[Operation pattern 1]
The operation pattern 1 shown in FIG. 4 shows an optimal operation pattern for the switches 32 and 34 to 36 when the vehicle is parked in an environment where the solar radiation is strong in summer (such as under hot weather). That is, the inside / outside air changeover switch 34 is inside air circulation, the A / C switch 36 is on, the air volume adjustment switch 32 is on on the strong side (dial position 5 and the like), and the temperature adjustment switch 35 is on the COOL side. When the pre-air conditioning function is operated in the state of the operation pattern 1, the temperature K of the air outlet 39 is within 3 minutes after the operation of the pre-air conditioning function, as shown by the solid line graph (inside air circulation) in FIG. Decreases from about 55 ° C. to about 12 ° C., and becomes a predetermined temperature range of 20 ° C. or less (shaded range in the figure). Thereby, the passenger compartment can be kept at a suitable temperature at the departure time.

  Here, when parking in an environment where sunlight is weak, such as shade, for example, the air volume adjustment switch 32 can be turned on (dial position 2 or the like) on the weak side. In other words, the passenger compartment temperature is lower in an environment where the solar radiation is weaker than in an environment where the solar radiation is strong. Therefore, even if the air volume adjustment switch 32 is turned on on the weak side, the air-conditioning function is turned on within 3 minutes after the operation of the pre-air conditioning function. The temperature K of the outlet 39 can be set to 20 ° C. or lower. In this case, useless power consumption by the blower fan 38 can be suppressed.

[Operation pattern 2]
The operation pattern 2 shown in FIG. 4 shows an example of an inappropriate operation pattern of each of the switches 32 and 34 to 36 when the vehicle is parked in an environment where the solar radiation is strong in summer (such as under hot weather). That is, the inside / outside air changeover switch 34 is for introducing outside air, the A / C switch 36 is on, the air volume adjustment switch 32 is on on the strong side (dial position 5 etc.), and the temperature adjustment switch 35 is on the COOL side. Even if the pre-air conditioning function is operated in the state of the operation pattern 2, as shown in the one-dot chain line graph (outside air introduction) in FIG. The temperature K does not fall below 20 ° C. (appropriate temperature) within the predetermined temperature range (NG). This is because the cooling efficiency is greatly reduced by the hot air introduced from the outside of the passenger compartment. In this case, the determination in step S21 in FIG. 3 is no.

  However, even when the inside / outside air changeover switch 34 is set to the outside air introduction, for example, when the solar radiation is weak, such as in rainy weather, the temperature K of the outlet 39 is set within a predetermined temperature range within 3 minutes after the pre-air conditioning function is operated. In some cases, the temperature can be reduced to 20 ° C or lower.

[Operation pattern 3]
The operation pattern 3 shown in FIG. 4 shows an optimum operation pattern of the switches 32 and 34 to 36 when the outside air temperature is low in winter. That is, the inside / outside air changeover switch 34 is the inside air circulation, the A / C switch 36 is off, the air volume adjustment switch 32 is on on the strong side (dial position 5 etc.), and the temperature adjustment switch 35 is on the HOT side. When the pre-air conditioning function is operated in the state of the operation pattern 3, as shown in the solid line graph (inside air circulation) in FIG. 5B, the temperature K of the air outlet 39 is within 3 minutes after the operation of the pre-air conditioning function. Rises from about −10 ° C. to about 35 ° C. and reaches a predetermined temperature range of 30 ° C. or higher (shaded range in the figure). Thereby, the passenger compartment can be kept at a suitable temperature at the departure time.

  Here, when parking in an indoor parking lot or the like, since the outside air temperature is higher than outdoors, for example, the air volume adjustment switch 32 can be turned on (dial position 2 or the like) on the weak side. That is, in an indoor parking lot or the like, the temperature of the air outlet 39 is not increased within 3 minutes after the operation of the pre-air conditioning function even if the passenger compartment temperature is not so lowered and the air volume adjustment switch 32 is turned on on the weak side. K can be set to 30 ° C. or higher. In this case, useless power consumption by the blower fan 38 can be suppressed.

[Operation pattern 4]
The operation pattern 4 shown in FIG. 4 shows an example of an inappropriate operation pattern of the switches 32 and 34 to 36 when the outside air temperature is low in winter. That is, the inside / outside air changeover switch 34 is for introducing outside air, the A / C switch 36 is off, the air volume adjustment switch 32 is on on the strong side (dial position 5 etc.), and the temperature adjustment switch 35 is on the HOT side. Even if the pre-air conditioning function is operated in the state of the operation pattern 4, as shown in the one-dot chain line graph (introduction of outside air) in FIG. The temperature K does not become 30 ° C. or higher (appropriate temperature) within the predetermined temperature range (NG). This is due to the fact that the heating efficiency is greatly reduced by the cool air introduced from outside the passenger compartment. In this case, the determination in step S20 in FIG. 3 is no.

  However, even when the inside / outside air changeover switch 34 is set to the outside air introduction, for example, when the solar radiation is strong, such as in fine weather, the temperature K of the air outlet 39 is set within a predetermined temperature range within 3 minutes after the pre-air conditioning function is operated. In some cases, the temperature can be increased to 30 ° C or higher.

  As described above in detail, according to the manual air conditioner 30 according to the first embodiment, the air conditioner controller 50 that controls the power on / off of the manual air conditioner 30 and the operation panel 31 in the passenger compartment are provided by the operator. Each of the manually operated switches 32 to 36 and the air conditioning controller 50 are connected to the receiving antenna 51 for receiving an on / off signal for turning on / off the power of the manual air conditioner 30, and the on / off signal is transmitted to the receiving antenna 51. The air-conditioning remote controller 52 that is connected to the air-conditioning controller 50 and an air outlet temperature sensor 49 that detects the temperature of the air flowing through the air outlet 39 of the manual air conditioner 30 are provided. The air conditioning controller 50 controls the power supply of the manual air conditioner 30 based on the ON signal, and the temperature detected by the outlet temperature sensor 49 (temperature K) after 3 minutes has passed is 20 ° C. (summer) or 30 ° C. ( During the winter season), the manual air conditioner 30 is turned off, assuming that the change in temperature detected by the outlet temperature sensor 49 is abnormal.

  Therefore, when the state of each of the switches 32 to 36 is appropriate and the change state of the temperature detected by the outlet temperature sensor 49 is normal, the temperature in the passenger compartment can be set to an appropriate temperature according to the departure time. On the other hand, when the state of each of the switches 32 to 36 is inappropriate and the change state of the temperature detected by the outlet temperature sensor 49 is abnormal, the manual air conditioner 30 can be turned off. Therefore, wasteful power consumption can be suppressed while adding a pre-air conditioning function to an inexpensive air conditioner such as a manual air conditioner.

  Further, according to the manual air conditioner 30 according to the first embodiment, since the change state of the temperature detected by the outlet temperature sensor 49 is managed with a preset time and temperature, it is possible to suppress more wasteful power consumption. .

  Furthermore, according to the manual air conditioner 30 according to the first embodiment, the air conditioning controller 50 determines that the air outlet temperature (temperature K) by the air outlet temperature sensor 49 when the power of the manual air conditioner 30 is turned on is 10 ° C. < When the temperature is within the range of K <30 ° C. (within the vehicle interior suitable temperature range), the manual air conditioner 30 is turned off. Therefore, since the manual air conditioner 30 is not continuously operated when the vehicle interior is at a suitable temperature, wasteful power consumption can be suppressed.

  In addition, according to the manual air conditioner 30 according to the first embodiment, each of the switches 32 to 36 includes the air volume adjustment switch 32, the blowout outlet changeover switch 33, the inside / outside air changeover switch 34, the temperature adjustment switch 35, and the A / C switch 36. Therefore, the pre-air conditioning function can be added without changing the basic structure of the manual air conditioner 30. Therefore, the cost increase of the entire manual air conditioner 30 can be minimized.

  Next, a second embodiment of the present invention will be described in detail with reference to the drawings. FIG. 6 is a flowchart showing the control contents of the air conditioning controller according to the second embodiment. Note that portions having the same functions as those of the first embodiment described above are denoted by the same reference numerals, and detailed description thereof is omitted.

  The manual air conditioner 30 according to the second embodiment differs from the first embodiment described above in the control contents of the air conditioning controller 50. In the air conditioning controller 50 according to the second embodiment, when an external power source is connected to the electric vehicle 10, that is, the power feeding connector 26a of the charging cable 26 is connected to the power receiving connector 10a of the electric vehicle 10, and The pre-air conditioning function is operated only when the plug 26b of the charging cable 26 is inserted into the plug receptacle or the like (see FIG. 1).

  As shown in FIG. 6, the air-conditioning controller 50 according to the second embodiment replaces step S4 shown in FIG. 3 with step S30, replaces step S7 with step S31, and omits step S5. Step S32 is added after the no determination.

  In step S <b> 30, it is determined whether or not an external power source is connected to the electric vehicle 10 based on the reception antenna 51 receiving the ON signal. If it is determined in step S30 that an external power source is connected to the electric vehicle 10 (yes determination), the process proceeds to step S6, and the main relays 21a and 21b are turned on. On the other hand, if it is determined in step S30 that the external power source is not connected to the electric vehicle 10 (no determination), the process proceeds to step S31.

  In step S31, based on the determination in step S30 (determination that no external power supply is connected to the electric vehicle 10), the air conditioning remote controller 52 is informed that “external power supply is not connected” and the display 55 of the air conditioning remote controller 52 is displayed. Displays a message such as “No external power supply connected” or “The pre-air conditioning function cannot be operated”. After finishing the process in step S31, the process proceeds to step S14.

  In step S32, it is determined whether or not an external power source is connected to the electric vehicle 10 based on the determination (no determination) that the OFF signal is not received by the reception antenna 51 in step S3. In step S32, when it is determined that the external power source is connected to the electric vehicle 10 (yes determination), a return process is performed, and when it is determined that the external power source is not connected to the electric vehicle 10 (no determination). Advances to step S14. That is, when the processing after step S6 is executed and the pre-air conditioning function is working normally, the air conditioner remote controller 52 is turned on until it is turned off, or the electric vehicle 10 and the external power source are connected. The pre-conditioning function will continue to operate until it is turned off.

  As described in detail above, the manual air conditioner 30 according to the second embodiment can achieve the same operational effects as those of the first embodiment described above. In addition, in the manual air conditioner 30 according to the second embodiment, the air conditioner controller 50 controls the power supply of the manual air conditioner 30 when the external power source is connected to the electric vehicle 10. There is no reduction in the remaining capacity. Therefore, the travel distance of the electric vehicle 10 can be extended, and further, it can be prevented that the charging time of the high voltage battery 16 is prolonged and the life of the high voltage battery 16 is shortened.

  It goes without saying that the present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the scope of the invention. For example, in each of the above embodiments, the manual air conditioner 30 is applied to a vehicle (EV) using only the motor generator 15 as a drive source. However, the present invention is not limited to this, and the motor generator (electric motor) is used. It can also be applied to a vehicle (PHEV) using an engine as a drive source.

  Further, in each of the above embodiments, a front wheel drive type vehicle driven by each front wheel 11 has been shown, but the present invention is not limited to this, and a rear wheel drive type vehicle driven by each rear wheel 12. It can also be applied to a four-wheel drive vehicle that drives all wheels.

  Further, in each of the above embodiments, a lithium ion battery is used as the high voltage battery 16, but the present invention is not limited to this, and an electrochemical capacitor such as an electric double layer capacitor is not limited thereto. Can also be adopted.

  Moreover, in each said embodiment, what showed the manual air-conditioner 30 which manually operates all of each switch 32-36 was shown as an inexpensive air-conditioning apparatus, but this invention is not limited to this, For example, temperature It can also be used in semi-automatic air conditioners that can automatically adjust only the adjustment.

10 Electric vehicle 16 High voltage battery (battery)
30 Manual air conditioner (air conditioner)
31 Operation panel 32 Air volume adjustment switch (air conditioning state switching means)
33 Air outlet changeover switch (air conditioning state changeover means)
34 Inside / outside air changeover switch (air conditioning state changeover means)
35 Temperature adjustment switch (air conditioning state switching means)
36 A / C switch (air conditioning state switching means)
39 Outlet 49 Outlet temperature sensor (outlet temperature detection means)
50 Air conditioning controller (air conditioning control means)
51 Receiving antenna (wireless receiving means)
52 Air-conditioning remote control (wireless transmission means)

Claims (5)

An electric vehicle air conditioner that is mounted on an electric vehicle equipped with a battery that can be charged by an external power source and that air-conditions the interior of the vehicle,
Air-conditioning control means for controlling on / off of the power supply of the air-conditioning apparatus;
Air conditioning state switching means provided on the operation panel in the passenger compartment and manually operated by an operator;
A wireless receiving means connected to the air conditioning control means for receiving an on / off signal for turning on / off the power supply of the air conditioner;
Wireless transmission means for transmitting the on / off signal to the wireless reception means;
An air outlet temperature detecting means connected to the air conditioning control means for detecting the temperature of air flowing through the air outlet of the air conditioner;
The air conditioning control means turns on the power supply of the air conditioner based on the on signal, and turns off the power supply of the air conditioning apparatus according to the change state of the temperature detected by the outlet temperature detecting means. Air conditioner for electric vehicles.   2. The air conditioner for an electric vehicle according to claim 1, wherein the air conditioning control means is configured such that the air outlet temperature detected by the air outlet temperature detecting means after the elapse of a predetermined time after turning on the power of the air conditioner is the air conditioning. An air conditioner for an electric vehicle, wherein the air conditioner is turned off when it is outside a predetermined temperature range set according to the outlet temperature detected by the outlet temperature detecting means when the apparatus is turned on. .   3. The air conditioner for an electric vehicle according to claim 1, wherein the air conditioning control means is configured such that the air outlet temperature detected by the air outlet temperature detecting means when the air conditioner is turned on is within an appropriate temperature range within the vehicle interior based on the ON signal. In some cases, an air conditioner for an electric vehicle, wherein the air conditioner is turned off.   The air conditioning apparatus for an electric vehicle according to any one of claims 1 to 3, wherein the air conditioning control means controls the power of the air conditioning apparatus to be on when the external power source is connected to the electric vehicle. An air conditioner for an electric vehicle. In the air conditioning apparatus for an electric vehicle according to claim 1, wherein the air conditioning state switching means, the air volume adjustment switch, outlet switching switch, outside air switching switch, temperature adjustment switch, the A / C switch constructed air conditioner for an electric vehicle characterized by Rukoto.

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