JP6635012B2 - vehicle - Google Patents

Description

  The present disclosure relates to air conditioning control in a room of a vehicle equipped with a power storage device that can be charged using an external power supply.

  2. Description of the Related Art Conventionally, vehicles equipped with a power storage device capable of charging using an external power supply (hereinafter, also referred to as external charging) have been known. In such a vehicle, the temperature inside the vehicle can be adjusted before the user uses the air conditioner by operating the vehicle air conditioner using the power from the external power supply. For example, Japanese Unexamined Patent Application Publication No. 2012-210004 (Patent Document 1) discloses a technology that uses a HEMS (Home Energy Management System) to predict an electric power supply and demand situation, and operates an in-vehicle air conditioner with an operation amount based on the prediction result. I do.

  On the other hand, there is known a vehicle equipped with a solar cell that converts light energy into electric power at a predetermined position such as a roof of the vehicle. In such a vehicle, a power storage device that supplies power to auxiliary devices and the like using the power output from the solar battery is charged. The power storage device may be mounted, for example, inside a vehicle.

JP 2012-210004 A

  In a daytime or the like, the sunlight may enter the interior of the vehicle, so that the temperature may be higher than the interior temperature in some places. Therefore, for example, when a power storage device is mounted in a room of a vehicle, the temperature of the power storage device may be higher than the temperature of the room even if the temperature of the room is adjusted, and deterioration may be promoted.

  The present disclosure has been made to solve the above-described problem, and an object of the present disclosure is to provide a vehicle that suppresses deterioration of a power storage device provided in a room of a vehicle.

  A vehicle according to an aspect of the present disclosure includes a solar cell that converts light energy into electric power, a first power storage device provided in a room of the vehicle, and charged using power output from the solar cell, and a first power storage device. A second power storage device that is charged using at least one of electric power of the device and electric power of an external power supply of the vehicle, an air conditioner that adjusts the temperature of air in the vehicle, and The vehicle includes a cooling device that introduces outside air to cool devices in a vehicle, and a control device that controls the air conditioner and the cooling device. When charging the second power storage device using the external power supply and the temperature of the first power storage device is higher than the first value during the charging of the second power storage device using the external power supply, the control device generates the second power surplus power that can be additionally supplied from the external power supply. When the surplus power is lower than the second value and higher than the third value, the air conditioner is operated with the air conditioner stopped when the surplus power is higher than the third value.

  With this configuration, it is possible to prevent the temperature of the first power storage device from being maintained at a high temperature higher than the first value. Therefore, promotion of deterioration of the first power storage device can be suppressed.

  According to the present disclosure, it is possible to provide a vehicle that suppresses deterioration of a power storage device provided inside a vehicle.

FIG. 1 is a diagram schematically showing an overall configuration of a vehicle according to the present embodiment. FIG. 2 is a block diagram showing a configuration of a device mounted on the vehicle according to the present embodiment. 4 is a flowchart illustrating a control process executed by an ECU mounted on the vehicle according to the present embodiment.

  Hereinafter, embodiments of the present disclosure will be described in detail with reference to the drawings. In the drawings, the same or corresponding portions have the same reference characters allotted, and description thereof will not be repeated.

  Further, in the embodiment described below, the vehicle will be described as an example of an electric vehicle equipped with a motor generator as a drive source, but the vehicle may be a hybrid vehicle further equipped with an engine as a drive source or a power source of a generator. The vehicle may be a vehicle or a vehicle using only an engine as a drive source instead of the motor generator.

  FIG. 1 is a diagram schematically showing an overall configuration of a vehicle 1 according to the present embodiment. As shown in FIG. 1, vehicle 1 according to the present embodiment has a battery pack 20, a PCU (Power Control Unit) 30, a solar PCU 40, a solar panel 50, a solar battery 60, and an auxiliary battery 70. , An inlet 130.

  Battery pack 20 includes a power storage device that stores rechargeable DC power. The power storage device includes, for example, a secondary battery such as a nickel metal hydride battery or a lithium ion battery. The battery pack 20 exchanges electric power with a motor generator 6 (see FIG. 2; hereinafter, referred to as MG6) which is a driving source of the vehicle 1. Power of battery pack 20 is supplied to MG 6 via PCU 30. Further, battery pack 20 is charged using the electric power generated by MG 6. The battery pack 20 is charged using electric power supplied from a power supply (see FIG. 2) external to the vehicle 1 via the inlet 130. The power storage device is not limited to a secondary battery, but may be a device that can transfer DC power to and from MG 6, for example, a capacitor or the like. The battery pack 20 is provided, for example, at a position below the rear seat of the vehicle 1 and between the wheel houses of the left and right rear wheels.

  PCU 30 converts the DC power of battery pack 20 into AC power and supplies it to MG 6, or converts regenerative power (AC power) generated in MG 6 into DC power and supplies it to battery pack 20.

  PCU 30 includes, for example, a converter and an inverter (both not shown) having a plurality of switching elements. Converters and inverters operate by on / off control of switching elements. The converter boosts the voltage of the DC power received from battery pack 20 and outputs the boosted voltage to the inverter. The inverter converts the DC power output by the converter into AC power and outputs the AC power to MG 6. Thereby, MG 6 is driven using the electric power stored in battery pack 20.

  Further, the inverter converts AC power generated by MG 6 into DC power and outputs the DC power to the converter. The converter steps down the voltage of the DC power output by the inverter and outputs the voltage to battery pack 20. Thereby, battery pack 20 is charged using the electric power generated by MG 6. Note that the converter may be omitted.

  PCU 30 further includes a DC / DC converter (not shown) that converts the voltage of battery pack 20 to a voltage suitable for charging auxiliary battery 70. The DC / DC converter charges the auxiliary battery 70 by supplying the converted power to the auxiliary battery 70.

  The solar panel 50 is a solar cell that converts light energy (for example, light energy of sunlight) into DC power. In the present embodiment, the solar panel 50 is installed on the surface of the roof of the vehicle 1 as shown in FIG. The electric power generated by the solar panel 50 is supplied to the solar battery 60 via the solar PCU 40. In addition, the solar panel 50 may be arranged on the surface of a place other than the roof of the vehicle 1 (for example, a hood or the like).

  The solar battery 60 is a power storage device that stores power generated by the solar panel 50. The power storage device includes, for example, a secondary battery such as a nickel metal hydride battery or a lithium ion battery. The solar battery 60 is configured by connecting a plurality of (for example, three) cells or a module including a plurality of cells in series. The solar battery 60 is provided at a predetermined position in the room of the vehicle 1 (for example, below the center console). The interior of the vehicle 1 includes a space (for example, a cabin) in the vehicle 1 on which an occupant rides and a space (for example, a luggage room) communicating with the space.

  The solar PCU 40 converts DC power output from the solar panel 50 into a voltage at which the solar battery 60 can be charged, or converts the DC power output from the solar battery 50 according to a control signal from an ECU (Electronic Control Unit) 100 (see FIG. 2). For example, the DC power of the battery pack 20 is converted into a voltage at which the battery pack 20 can be charged. Specifically, for example, when the SOC (State Of Charge) of the solar battery 60 increases until reaching an upper limit, the solar PCU 40 charges the battery pack 20 using the power of the solar battery 60, or For example, the auxiliary battery 70 is charged. Alternatively, solar PCU 40 charges solar battery 60 using the power output from solar panel 50, for example, when the SOC of solar battery 60 decreases to the lower limit.

  Auxiliary battery 70 supplies power to the auxiliary load. The auxiliary equipment load includes, for example, an electric device (for example, a car navigation system or an audio device) provided in the room of the vehicle 1, an inside air circulation mode and an outside air introduction mode of an air conditioner (hereinafter, referred to as an air conditioner) described later. , A cooling device for supplying cooling air to the solar battery 60, and various ECUs mounted on the vehicle 1.

  Hereinafter, each component mounted on the vehicle 1 will be described in detail with reference to FIG. FIG. 2 is a block diagram showing a configuration of a device mounted on vehicle 1 according to the present embodiment. As shown in FIG. 2, the vehicle 1 further includes a drive wheel 2, a power transmission gear 4, an MG 6, a communication device 92, an ECU 100, an air conditioner 140, an outside air introduction switching damper 150, and a cooling fan 160. Prepare.

  MG6 is, for example, a three-phase AC rotating electric machine. The output torque of MG 6 is transmitted to drive wheels 2 via power transmission gear 4 constituted by a speed reducer and the like. The MG 6 can also generate electric power by the rotational force of the drive wheels 2 during the regenerative braking operation of the vehicle 1. 1 and 2 show a configuration in which only one motor generator is provided as a drive source as an example, but the number of motor generators is not limited to this, and a plurality of motor generators (for example, 2) may be provided.

  The battery pack 20 includes an assembled battery 22, a system main relay (hereinafter, described as SMR) 24, a first charging relay (hereinafter, described as CHRA) 26, and a second charging relay (hereinafter, described as CHRB). ) 28, and a charging device 120.

  The assembled battery 22 is configured by connecting a plurality of modules each including a plurality of cells in series. Alternatively, the battery pack 22 may be configured by connecting a plurality of cells in series. In the battery pack, the voltage of the battery pack 22 is, for example, about 200V.

  The SMR 24 is provided in the middle of the power lines PL1 and NL1 connecting the PCU 30 and the battery pack 22. The SMR 24 makes the PCU 30 and the battery pack 22 electrically connected (on) or cuts off (off) based on the control signal C1 from the ECU 100.

  CHRA 26 is provided in the middle of power lines PL2 and NL2 that are branched from power lines PL1 and NL1 that connect battery pack 22 and SMR 24 and that are connected to solar PCU 40. CHRA 26 electrically connects (on state) or cuts off (off state) between power lines PL1, NL1 and solar PCU 40 based on control signal C2 from ECU 100.

  Solar PCU 40 includes a high-voltage DC / DC converter 42, a solar DC / DC converter 44, an auxiliary DC / DC converter 46, and a monitoring circuit 48.

  The high-voltage DC / DC converter 42 converts DC power of the solar battery 60 into DC power that can charge the battery pack 22 based on a control signal from the ECU 100. The high-voltage DC / DC converter 42 supplies the converted power to the battery pack 22.

  Solar DC / DC converter 44 converts DC power supplied from solar panel 50 into DC power that can charge solar battery 60, based on a control signal from ECU 100. The solar DC / DC converter 44 supplies the converted power to the solar battery 60.

  The accessory DC / DC converter 46 converts DC power of the solar battery 60 into DC power that can charge the accessory battery 70 based on a control signal from the ECU 100. The auxiliary device DC / DC converter 46 supplies the converted power to the auxiliary device battery 70.

  The monitoring circuit 48 monitors the state of the solar battery 60. The solar battery 60 is provided with a temperature sensor 62, a voltage sensor 64, and a current sensor 66. The temperature sensor 62 detects the temperature (hereinafter, referred to as battery temperature) TBs of the solar battery 60 and transmits a signal indicating the detected battery temperature TBs to the monitoring circuit 48. The voltage sensor 64 detects the voltage VBs of the entire solar battery 60, and transmits a signal indicating the detected voltage VBs to the monitoring circuit 48. The current sensor 66 detects the current IBs of the solar battery 60 and transmits a signal indicating the detected current IBs to the monitoring circuit 48.

  The monitoring circuit 48 outputs information on the state of the solar battery 60 to the ECU 100. The monitoring circuit 48 outputs, for example, a detection result received from each sensor to the ECU 100, or executes a predetermined calculation process on the detection result received from each sensor, and outputs the execution result to the ECU 100. . Specifically, monitoring circuit 48 calculates the SOC of solar battery 60 based on temperature TBs, voltage VBs and current IBs of solar battery 60, and outputs information indicating the calculated SOC to ECU 100.

  The monitoring circuit 48 estimates an OCV (Open Circuit Voltage) based on, for example, the current IBs of the solar battery 60, the voltage VBs, and the battery temperature TBs, and based on the estimated OCV and a predetermined map, An SOC of 60 may be estimated. Alternatively, the monitoring circuit 48 may estimate the SOC of the solar battery 60 by integrating the charge current and the discharge current of the solar battery 60, for example.

  Charging device 120 has a positive output terminal and a negative output terminal connected to power lines PL3 and NL3 branched from power lines PL1 and NL1, respectively. The input terminal of charging device 120 is connected to inlet 130. Charging device 120 converts AC power supplied to the input terminal from house 200, which will be described later, via inlet 130 to DC power based on control signal C4 from ECU 100, and supplies the DC power to the battery pack 22 from the output terminal. .

  A CHRB 28 is provided in the middle of the power lines PL3 and NL3. CHRB 28 electrically connects (on state) or cuts off (off state) between power lines PL1, NL1 and charging device 120 based on control signal C3 from ECU 100.

  The communication device 92 is configured to transmit and receive data indicating predetermined information by exchanging signals with the portable terminal 110 carried by the user, for example. The communication device 92 transmits data from the portable terminal 110 to the ECU 100, and transmits data from the ECU 100 to the portable terminal 110. The communication device 92 enables communication based on a predetermined wireless communication standard, for example, with the mobile terminal 110 via a base station or without passing through a base station. The predetermined wireless communication standards include, for example, communication standards of various mobile phones such as 3G, 4G and 5G, and communication standards such as a wireless LAN (Local Area Network) represented by IEEE 802.11 and the like.

  Air conditioner 140 adjusts the indoor temperature of vehicle 1 to a temperature set by a user or a predetermined target temperature by performing either cooling or heating based on a control signal from ECU 100. Air conditioner 140 includes an air conditioner compressor (hereinafter, referred to as an A / C compressor) not shown. The A / C compressor operates using electric power supplied from the charging device 120 during cooling or during external charging.

  The outside air introduction switching damper 150 is, based on a control signal from the ECU 100, an outside air introduction passage that introduces air from outside the vehicle 1 as a passage that takes in air when the air is blown into the room from the air outlet of the air conditioner 140, A switching device for selecting one of an internal air circulation passage for introducing air from the room. For example, when the outside air introduction mode is selected, ECU 100 controls outside air introduction switching damper 150 such that outside air of vehicle 1 is taken in from the outside air introduction passage. On the other hand, for example, when the inside air circulation mode is selected, ECU 100 controls outside air introduction switching damper 150 such that indoor air is taken in from the inside air circulation passage.

  Cooling fan 160 introduces cooling air into the housing of solar battery 60 based on a control signal from ECU 100. The cooling fan 160 is provided downstream of the outside air introduction switching damper 150. Therefore, when the outside air introduction mode is selected, cooling fan 160 supplies air taken in from the outside of vehicle 1 to solar battery 60 as cooling air. When the internal circulation mode is selected, cooling fan 160 supplies air taken in from the interior of vehicle 1 to solar battery 60 as cooling air. Cooling fan 160 may be a blower fan used when air is blown into the room from a blower opening of air conditioner 140, or may be a fan provided separately from the blower fan.

  The outside air introduction switching damper 150 and the cooling fan 160 constitute a cooling device that introduces outside air into the room of the vehicle 1 and cools equipment in the room of the vehicle 1.

  Although not shown, the ECU 100 includes a CPU (Central Processing Unit), a memory serving as a storage device, an input / output buffer, and the like. ECU 100 controls various devices such that vehicle 1 is brought into a desired operation state based on signals from the sensors and devices, and maps and programs stored in a memory. Note that the various controls are not limited to processing by software, but can be processed by dedicated hardware (electronic circuit).

  The ECU 100 acquires the SOC of the solar battery 60 from the monitoring circuit 48. The process of calculating the SOC executed by the monitoring circuit 48 described above may be executed by the ECU 100. When the SOC of solar battery 60 reaches the lower limit, ECU 100 operates solar DC / DC converter 44 to charge solar battery 60 using the power output from solar panel 50.

  When the SOC of solar battery 60 reaches the upper limit, ECU 100 stops charging solar battery 60 and turns CHRA 26 on. The ECU 100 operates the high-voltage DC / DC converter 42 to charge the battery pack 22 using the power of the solar battery 60. The ECU 100 may operate the solar DC / DC converter 44 in addition to the high-voltage DC / DC converter 42 to charge the battery pack 22. The ECU 100 stops the operation of the high-voltage DC / DC converter 42 and turns off the CHRA 26 when the SOC of the solar battery 60 reaches the lower limit value or the SOC of the battery pack 22 reaches the upper limit value. Then, charging of the battery pack 22 is stopped.

  The ECU 100 controls the charging and discharging of the solar battery 60 such that the SOC of the solar battery 60 falls within the range between the upper limit and the lower limit by operating the CHRA 26 and the solar PCU 40 as described above.

  The contact sensor 132 and the indoor temperature sensor 170 are connected to the ECU 100. For example, when plug 208 is connected to inlet 130, contact sensor 132 transmits a signal D1 indicating that plug 208 is connected to inlet 130 to ECU 100. The indoor temperature sensor 170 detects the indoor temperature of the vehicle 1. Indoor temperature sensor 170 transmits a signal indicating the detected indoor temperature to ECU 100.

  When the contact sensor 132 detects that the plug 208 is connected to the inlet 130, the ECU 100 operates the charging device 120 while turning on each of the SMR 24 and the CHRB 28, so that the system power supply 300 The plug-in charging for charging the battery pack 22 is performed by converting the AC power supplied via the power supply 204 into DC power.

  For example, during plug-in charging, ECU 100 can execute pre-air-conditioning control for operating air conditioner 140 to adjust the temperature of the interior of vehicle 1 to an appropriate temperature. The ECU 100 may execute the pre-air-conditioning control according to a request of the user, or may execute the pre-air-conditioning control when the temperature in the room of the vehicle 1 during plug-in charging exceeds a threshold value, The pre-air-conditioning control may be executed from a point in time before a point in time at which plug-in charging is predicted to be completed by a predetermined time.

  AC power is supplied to the plug 208 from the house 200. House 200 includes a HEMS 202, a switchboard 204, and a home appliance 206. AC power is supplied to the switchboard 204 from the system power supply 300 outside the house 200. The switchboard 204 is configured to be able to supply AC power to the home electric appliance 206 and the vehicle 1.

  Home appliance 206 includes, for example, electrical devices such as a television, a refrigerator, and an air conditioner in house 200. The HEMS 202 is configured to monitor the power supplied from the switchboard 204 to each electrical device and to adjust the amount of power supplied to each electrical device. The HEMS 202 predicts, for example, a current power supply and demand situation from the past power usage history. The HEMS 202 has a built-in communication device, and is configured to be able to exchange (communicate) the signal C5 with the communication device 92 of the vehicle 1. Communication between the HEMS 202 and the communication device 92 is performed based on a predetermined communication standard. Since the predetermined communication standard is the same as the communication standard of the communication performed between portable terminal 110 and communication device 92 described above, detailed description thereof will not be repeated.

  The switchboard 204 supplies a part or all of the electric power from the system power supply 300 to the electric home appliance 206 or the vehicle 1 within a range that is within the upper limit of the electric power that can be supplied, based on the control signal from the HEMS 202.

  During plug-in charging, the HEMS 202 supplies power that can be additionally supplied from the switchboard 204 to the plug 208 via the communication device 92 at predetermined time intervals or in response to a request from the ECU 100. Information about the surplus electric power is transmitted to the ECU 100. The HEMS 202 calculates, for example, a difference between an upper limit value of power that can be supplied to the vehicle 1 and the home electric appliance 206 and electric power supplied to the vehicle 1 and the home electric appliance 206 as surplus electric power.

  Since sunlight enters the interior of the vehicle 1 having such a configuration in the daytime or the like, the temperature may be higher than the indoor temperature in some places. Therefore, for example, in the solar battery 60 provided in the room of the vehicle 1, the temperature of the solar battery 60 becomes higher than the room temperature even if the room temperature is adjusted using the air conditioner 140 or the like by the pre-air-conditioning control. May be promoted.

  Therefore, in the present embodiment, when the temperature of solar battery 60 is higher than threshold value Ta during plug-in charging, ECU 100 determines when air conditioner 140 and surplus power are higher than threshold value Pa. The cooling fan 160 is operated. The ECU 100 introduces outside air into the room of the vehicle 1 when the surplus power is lower than the threshold value Pa and is higher than the threshold value Pb (<Pa) so as to cool the equipment in the room of the vehicle 1. The outside air introduction switching damper 150 and the cooling fan 160 are operated.

  This can prevent the solar battery 60 from being maintained at a high temperature higher than the threshold value Ta. Therefore, promotion of deterioration of the solar battery 60 can be suppressed.

  Hereinafter, control processing executed by the ECU 100 will be described with reference to FIG. FIG. 3 is a flowchart showing a control process executed by ECU 100 mounted on vehicle 1 according to the present embodiment.

  In step (hereinafter, step is referred to as “S”) 100, ECU 100 determines whether plug-in charging is being performed or not. ECU 100 determines that plug-in charging is being performed when plug 208 is connected to inlet 130, SMR 24 and CHRB 28 are on, and charging device 120 is operating, for example. Is also good. If it is determined that plug-in charging is being performed (YES in S100), the process proceeds to S102.

  In S102, ECU 100 determines whether or not the indoor temperature of vehicle 1 is equal to or higher than threshold value Ta. Threshold value Ta is, for example, a temperature at which deterioration of solar battery 60 in the room of vehicle 1 is promoted, and is a predetermined value. When it is determined that the temperature in the room of vehicle 1 is equal to or higher than threshold value Ta (YES in S102), the process proceeds to S106.

  If it is determined that the temperature in the room of vehicle 1 is not higher than threshold value Ta (NO in S102), the process proceeds to S104. In S104, ECU 100 determines whether or not battery temperature TBs of solar battery 60 is equal to or higher than threshold value Ta. If it is determined that battery temperature TBs of solar battery 60 is equal to or higher than threshold value Ta (YES in S104), the process proceeds to S106.

  In S106, ECU 100 determines whether or not the current time zone is a time zone with surplus power. The time zone with surplus power is, for example, a predetermined time zone, and may be stored in the ECU 100 in advance in a memory or the like. Alternatively, when a time zone with surplus power is set in the HEMS 202, the ECU 100 receives information on the time zone with surplus power from the HEMS 202, and based on the received information, sets the current time zone to the surplus power. It may be determined whether it is a certain time zone. The HEMS 202 may set a time zone with surplus power according to the season, or calculate an average value of the surplus power up to immediately before every predetermined time, and set a time when the average value is equal to or more than the predetermined value. The zone may be set as a time zone with surplus power. If it is determined that the current time zone is a time zone with surplus power (YES in S106), the process proceeds to S108.

  In S108, ECU 100 determines whether or not the surplus power is equal to or greater than threshold Pa. Threshold Pa is, for example, electric power at which air conditioner 140 can be operated. When it is determined that the surplus power is equal to or greater than threshold Pa (YES in S108), the process proceeds to S110.

  In S110, ECU 100 executes an inquiry process. The inquiry process is a process of inquiring of the user's portable terminal 110 whether or not to operate the air conditioner 140 during plug-in charging (whether or not to turn on the air conditioner 140). More specifically, ECU 100 transmits a control signal for causing portable terminal 110 to display a screen for inquiring whether or not to operate air conditioner 140 via communication device 92 on display of portable terminal 110. When receiving the control signal, the mobile terminal 110 displays a screen for inquiring whether to operate the air conditioner 140 on the display. The mobile terminal 110 displays an option on a display, for example, and waits until a user operation is performed or a predetermined time elapses. When the user performs an operation, information corresponding to the option selected by the user is transmitted to the vehicle 1. When the predetermined time has elapsed, information indicating that no operation has been performed until the predetermined time has elapsed is transmitted to the vehicle 1.

  In S112, ECU 100 determines whether or not there is a reply indicating that air conditioner 140 is to be turned on before a predetermined time has elapsed since the start of the inquiry process (or after transmitting the signal to mobile terminal 110). Is determined. ECU 100 determines that there is a reply when data indicating a reply to turn on air conditioner 140 is turned on from portable terminal 110 via communication device 92 before a predetermined time elapses, for example. If it is determined that there is a reply to turn on air conditioner 140 (YES in S112), the process proceeds to S114.

  In S114, ECU 100 operates air conditioner 140. The ECU 100 further operates the outside air introduction switching damper 150 so as to select the inside air circulation passage. The ECU 100 further operates the cooling fan 160. The ECU 100 continues the operation of the air conditioner 140 and the operation of the cooling fan 160 until a predetermined time elapses from the start of the operation, for example. The ECU 100 stops the air conditioner 140 and the cooling fan 160 when a predetermined time has elapsed. At this time, the ECU 100 may select a mode selected immediately before the operation of the cooling fan 160 between the outside air introduction mode and the inside air circulation mode.

  In S116, ECU 100 determines whether the surplus power is smaller than threshold Pa and is equal to or larger than threshold Pb. The threshold value Pb is smaller than the threshold value Pa, and is set to a value at which the cooling fan 160 can be operated with at least surplus power. When it is determined that the surplus power is smaller than threshold Pa and is equal to or larger than threshold Pb (YES in S116), the process proceeds to S118. If it is determined that there is no response to turn on air conditioner 140 before the predetermined time has elapsed (NO in S112), the process proceeds to S108.

  In S118, ECU 100 operates outside air introduction switching damper 150 so as to select the outside air introduction passage, and also operates cooling fan 160. ECU 100 continues to operate cooling fan 160, for example, until a predetermined time has elapsed since the start of the operation. The ECU 100 stops the cooling fan 160 when a predetermined time has elapsed. At this time, the ECU 100 may select a mode selected immediately before the operation of the cooling fan 160 between the outside air introduction mode and the inside air circulation mode.

  Note that when it is determined that plug-in charging is not being performed (NO in S100), it is determined that the time is not during a time zone where surplus power is present (NO in S106), or the surplus power is smaller than threshold value Pb. Is determined (NO in S116), this process ends.

  The operation of the vehicle 1 according to the present embodiment based on the above structure and flowchart will be described.

  When plug 208 is connected to inlet 130 by the user, plug-in charging is started (YES in S100). If sunlight enters the interior of the vehicle 1 during plug-in charging, the temperature in the interior of the vehicle 1 increases.

  Even if the temperature in the room of the vehicle 1 is lower than the threshold value Ta (NO in S102), if the battery temperature TBs of the solar battery 60 is equal to or higher than the threshold value Ta, it is a time zone in which there is excess power. It is determined whether or not (S106). If it is determined that there is a surplus power period (YES in S106), and if the surplus power is equal to or greater than threshold value Pa, an inquiry process is executed (S110).

  Therefore, a screen is displayed on the display of the portable terminal 110 carried by the user asking whether to operate the air conditioner 140 during plug-in charging.

  When the user operates portable terminal 110 and returns a message that air conditioner 140 is to be operated before a predetermined time has elapsed (YES in S112), air conditioner 140 is operated and cooling fan 160 is operated (S114). ). Therefore, the temperature of the solar battery 60 decreases as the temperature in the room of the vehicle 1 decreases. When a predetermined time has elapsed, both the air conditioner 140 and the cooling fan 160 are stopped.

  On the other hand, if there is no response to operate air conditioner 140 before the predetermined time has elapsed (NO in S112), or if surplus power is lower than threshold Pa and higher than threshold Pn (YES in S116), the outside air introduction switching damper 150 is operated so that the outside air introduction passage is selected, and the cooling fan 160 is operated (S118). Therefore, since the outside air is introduced from the outside air introduction passage by the operation of the cooling fan 160, the temperature in the room of the vehicle 1 decreases in a more gradual manner than when the air conditioner 140 operates, and the solar battery 60 Will decrease. When a predetermined time has elapsed, cooling fan 160 is stopped.

  As described above, according to the present embodiment, when the temperature in the room of vehicle 1 or the temperature of solar battery 60 is equal to or higher than threshold value Ta during plug-in charging, surplus power is equal to or higher than threshold value Pa. Since the air conditioner 140 and the cooling fan 160 operate at a certain time, the solar battery 60 is suppressed from being maintained at a high temperature higher than the threshold value Ta. Therefore, promotion of deterioration of the solar battery 60 can be suppressed. Therefore, it is possible to provide a vehicle that suppresses deterioration of the power storage device provided in the room of the vehicle.

Hereinafter, modified examples will be described.
In the above-described embodiment, when the surplus power is equal to or greater than the threshold Pa, an inquiry process is executed, and the air conditioner 140 and the cooling fan 160 are operated only when there is a reply to operate the air conditioner. However, for example, when the surplus power is equal to or larger than the threshold Pa, the air conditioner 140 and the cooling fan 160 may be operated without executing the inquiry process.

  In the above-described embodiment, the air conditioner 140 and the cooling fan 160 are operated until a predetermined time elapses when there is a reply indicating that the air conditioner 140 is operated. The air conditioner 140 and the cooling fan 160 may be operated until the temperature becomes equal to or less than the threshold value Tb smaller than the threshold value Ta, or the air conditioner 140 and the cooling fan 160 may be operated until the surplus power becomes smaller than the threshold value Pa. 160 may be operated.

  In the above-described embodiment, when the surplus power is smaller than the threshold Pa and is equal to or larger than the threshold Pb, or when there is no reply to the effect that the air conditioner 140 is operated, the outside air introduction switching damper is operated and the cooling is performed. Although the description has been given assuming that the fan 160 is operated until a predetermined time elapses, for example, the cooling fan 160 is operated until the temperature of the solar battery 60 becomes equal to or less than a threshold value Tb smaller than the threshold value Ta. Alternatively, the cooling fan 160 may be operated until the surplus power becomes smaller than the threshold value Pb.

  In the above-described embodiment, the HEMS 202 and the communication device 92 are described as communicating with each other by wireless communication. However, for example, the HEMS 202 and the communication device 92 may communicate with each other by wired communication using a power line.

  In the above-described embodiment, when there is no reply to operate air conditioner 140, or when the surplus power is lower than threshold Pa and is equal to or higher than threshold Pb, the outside air introduction passage is selected. Although the outside air introduction switching damper is operated and the cooling fan 160 is operated as described above, for example, a predetermined window is lowered by a predetermined amount to communicate with the outside air in the room, and the cooling fan 160 is operated. You may.

  In the above-described embodiment, the case where the temperature sensor 62 is provided at one place in the solar battery 60 has been described as an example. However, a plurality of temperature sensors 62 may be provided in the solar battery 60. The temperature sensor 62 may be provided in each cell of the solar battery 60, for example, or may be provided in the solar battery 60 at predetermined cells or at intervals of a predetermined distance. In this case, ECU 100 may detect the highest value among the detection results of the plurality of temperature sensors as battery temperature TBs, or may detect the average value of the detection results of the temperature sensors as battery temperature TBs. Good.

The above-described modifications may be implemented by combining all or some of them as appropriate.
The embodiments disclosed this time are to be considered in all respects as illustrative and not restrictive. The scope of the present disclosure is defined by the terms of the claims, rather than the description above, and is intended to include any modifications within the scope and meaning equivalent to the terms of the claims.

  Reference Signs List 1 vehicle, 2 drive wheels, 4 power transmission gear, 6 motor generator, 20 battery pack, 22 assembled battery, 30 PCU, 42 high voltage DC / DC converter, 44 solar DC / DC converter, 46 auxiliary DC / DC converter, 48 Monitoring circuit, 50 solar panels, 60 solar batteries, 62 temperature sensors, 64 voltage sensors, 66 current sensors, 70 auxiliary batteries, 92 communication devices, 100 ECUs, 110 mobile terminals, 120 charging devices, 130 inlets, 132 contact sensors, 140 air conditioner, 150 outside air introduction switching damper, 160 cooling fan, 170 indoor temperature sensor, 200 house, 202 HEMS, 204 switchboard, 206 household appliances, 208 plug, 300 system power supply.

Claims (1)

A solar cell that converts light energy into electricity,
A first power storage device provided in a vehicle interior and charged using power output from the solar cell;
A second power storage device that is charged using at least one of power of the first power storage device and power of an external power supply of the vehicle;
An air conditioner for adjusting the temperature of the air in the room of the vehicle,
A cooling device that introduces outside air into the room of the vehicle and cools equipment in the room of the vehicle,
A control device that controls the air conditioner and the cooling device,
The control device, during charging of the second power storage device using the external power supply, when the temperature of the first power storage device is higher than a first value,
Operating the air conditioner when surplus power that can be additionally supplied from the external power supply is higher than a second value,
A vehicle that operates the cooling device in a state where the air conditioner is stopped when the surplus power is lower than the second value and higher than a third value.

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