JP2018042367A - Electric vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve convenience at the time of external charging and external power feeding in an electric vehicle.SOLUTION: An electric vehicle 10 comprises a chargeable/dischargeable battery 1 for driving, a charge port 2 provided in the outer surface 11 of a vehicle body, a power feed port 3 provided adjacent to the charge port 2, and a display device 4 provided in the vicinity of the charge port 2 and the power feed port 3. During external charging of the battery 1, a charge gun 21 is put in the charge port 2. During external power feeding for sending electric power from the battery 1 to an external device 30, a plug 31 of the external device 30 is put in the power feed port 3. The display device 4 displays the charge state of the battery 1 during external charging and displays at least a power feed amount to the external device 30 during external power feeding.SELECTED DRAWING: Figure 1

Description

  The present invention relates to an electric vehicle capable of external charging for charging a vehicle-mounted driving battery from an external power source and external power feeding from the battery to an external device.

  2. Description of the Related Art Conventionally, in an electric vehicle such as an electric vehicle or a hybrid vehicle, a technique for charging a vehicle-mounted driving battery using a power source outside the vehicle is known. That is, the battery is charged (externally charged) by transmitting power from an external power source such as a household outlet or a charging station to the driving battery through a charging port provided on the outer surface of the vehicle body.

  At the time of such external charging, work for inserting a charging gun into the charging port and work for operating an external power source are required outside the vehicle. Therefore, it has been proposed to provide a display means for displaying the state of charge of the battery in the vicinity of the battery charging connector (charging port) so that the state of charge of the battery can be easily grasped from outside the vehicle during external charging. (See Patent Document 1). By providing such a display means, convenience during external charging can be improved.

JP 9-285022 A

  By the way, there is an electric vehicle provided with a power supply port capable of supplying power of the driving battery so that the driving battery can be used as a power source of an external device (for example, a household electric product). By connecting the plug of the external device to the power supply port, power can be supplied from the drive battery to the external device (external power supply) through the power supply port.

  However, when a large number of external devices are connected to the power supply port, or when an external device that consumes a large amount of power is connected, a large load is applied to the drive battery or a protection circuit for protecting the battery is activated. There is a possibility that the power supply to the external device is automatically stopped. For this reason, attention must be paid so that the amount of power supplied to the external device (the amount of power used by the external device) does not become excessive during external power supply.

  However, at present, since the user cannot accurately grasp the amount of power supplied to the external device, it is difficult to be careful so that the power supply amount does not become excessive. Therefore, the user may be anxious about whether a large load is applied to the drive battery or power supply to the external device is automatically stopped during external power supply. For this reason, in an electric vehicle capable of performing external charging and external power feeding, it is required to improve convenience not only during external charging but also during external power feeding.

  This case has been devised in view of the above-described problems, and an object of the present invention is to improve convenience during external charging and external power feeding in an electric vehicle. The present invention is not limited to this purpose, and is a function and effect derived from each configuration shown in the embodiments for carrying out the invention described below, and has another function and effect that cannot be obtained by conventional techniques. is there.

  (1) The electric vehicle disclosed herein is provided with a drive battery capable of being charged / discharged, a charging port provided on the outer surface of the vehicle body and into which a charging gun is inserted when the battery is externally charged, and adjacent to the charging port. A power supply port into which the plug of the external device is inserted during external power supply to transmit power from the battery to the external device, and the charging port and the vicinity of the power supply port, and displays the state of charge of the battery during the external charging And a display device that displays at least the amount of power supplied to the external device during the external power supply. The display device is provided in a space defined by a housing in which the charging port and the power feeding port are fixed, and a lid body attached to the outer surface of the vehicle body and capable of closing the opening of the housing. Is preferred.

(2) It is preferable that the display device displays a maximum amount of power that can be supplied to the external device during the external power supply.
(3) It is preferable that the electric vehicle includes a warning unit that warns a user when a difference between the power supply amount and a maximum power amount that can be supplied to the external device is less than a predetermined amount.
(4) It is preferable that the maximum electric energy is set so as to decrease as the temperature of the battery increases.

(5) It is preferable that the said electric vehicle is provided with the alerting | reporting means which alert | reports to a user that the temperature of the said battery exceeded the threshold value.
(6) It is preferable that the notification means has a plurality of threshold values set in stages, and notifies the temperature of the battery by a different method every time the plurality of threshold values are exceeded.
(7) It is preferable that the display device displays a state of charge of the battery during the external power feeding.

  A charging port and a power feeding port are provided adjacent to each other, and a display device is provided in the vicinity thereof. On the display device, the state of charge of the battery is displayed during external charging, and the amount of power supplied to the external device is displayed during external power feeding. For this reason, the user of an electric vehicle can grasp | ascertain the information according to the condition on the spot at the time of external charging and external power feeding. Therefore, convenience during external charging and external power feeding can be improved.

1 is a schematic diagram illustrating the configuration of an electric vehicle according to an embodiment. It is the figure which expanded the principal part of the electric vehicle of FIG. It is a block block diagram of the electric vehicle of FIG. It is a map example which prescribed | regulated the relationship between the temperature of a battery, and maximum electric energy. It is a schematic diagram which illustrates a display device, a notification means, and a warning means, (a) at the time of external charging, (b) at the time of external power feeding, (c) at the time of weak alerting, (d) at the time of strong alerting Is shown. It is the flowchart which illustrated the control content implemented with the electric vehicle of FIG. It is a schematic diagram which shows a display apparatus, an alerting | reporting means, and a warning means based on one modification, (a) at the time of external charge, (b) at the time of external electric power feeding, (c) at the time of weak alerting, (d) Indicates a strong alert.

  An electric vehicle as an embodiment will be described with reference to the drawings. Note that the embodiment described below is merely an example, and there is no intention to exclude various modifications and technical applications that are not explicitly described in the following embodiment.

[1. Device configuration]
As shown in FIG. 1, an electric vehicle 10 according to the present embodiment is equipped with a chargeable / dischargeable battery 1 and travels by driving a travel motor (not shown) with electric power stored in the battery 1. Or it is a plug-in hybrid vehicle. The battery 1 is a power storage device for driving a vehicle, and can be charged using an external power source 20 such as a household outlet or a charging station outside the electric vehicle 10. The electric power stored in the battery 1 can be used not only for running but also for the operation of the external device 30 that is an electric product separate from the electric vehicle 10.

  The electric vehicle 10 is connected to the charging port 2 into which the charging gun 21 connected to the external power source 20 is inserted during external charging to transmit power from the external power source 20 to the battery 1, and to external power when transmitting power from the battery 1 to the external device 30. And a power feeding port 3 into which a plug 31 connected to 30 is inserted. The charging port 2 is an inlet (inlet) for electric power in the electric vehicle 10 and is provided on the outer surface 11 of the vehicle body. The power supply port 3 is an outlet (outlet) of electric power in the electric vehicle 10 and is provided at a position adjacent to the charging port 2 on the outer surface 11 of the vehicle body. In this embodiment, the case where the three power supply ports 3 are provided side by side is illustrated. However, the number of the power supply ports 3 may be one or more, and is not limited to three.

  On the electric circuit connecting the charging port 2 and the battery 1, an on-board charger (OBC [On Board Charger]) 17 that converts AC power supplied from the external power supply 20 into DC power is interposed. In addition, an inverter 18 that converts DC power supplied from the battery 1 into AC power is interposed on an electric circuit that connects each power supply port 3 and the battery 1. The types of the charging port 2 and the power feeding port 3 are not particularly limited. The charging port 2 may be for normal charging or for quick charging. Alternatively, two charging ports 2 for quick charging and for normal charging may be provided. In addition, as the power supply port 3, for example, one that functions as a 100 V AC power supply can be applied as in a household outlet.

  As shown in FIG. 2, the charging port 2 and the power feeding port 3 of the present embodiment are fixed to a housing 12 attached to the vehicle body outer surface 11. The casing 12 has a box shape with one side opened, and is attached in a posture that opens toward the outside of the vehicle. Further, a lid (lid body) 13 capable of closing the opening of the housing 12 is attached to the vehicle body outer surface 11 so as to be freely opened and closed. The lid 13 is opened when the user of the electric vehicle 10 accesses the charging port 2 or the power feeding port 3 (that is, during external charging or external power feeding), and is closed in other cases.

  In a space partitioned by the housing 12 and the lid 13 in the closed state (a space closed by the lid 13), an illumination 14 for illuminating the space and a display for displaying information related to external charging or external power feeding A device 4 and a notification light (warning means, notifying means) 5 for providing warning and notification to the user under a predetermined situation are provided. The illumination 14 is turned on at the same time as the lid 13 is opened, and is turned off at the same time as the lid 13 is closed. In addition, when the lid 13 is in an open state for a long time, the illumination 14 is turned off after being lit for a predetermined period after the lid 13 is in the open state.

  The display device 4 displays the current state of charge of the battery 1 and the current power supply amount P [W] to the external device 30. The “charged state of the battery 1” corresponds to the remaining amount of the battery 1 (remaining battery amount) (for example, the charge rate SOC [%] or remaining capacity [Ah] of the battery 1, or the battery 1 is charged. Power amount [Wh] etc.). In the present embodiment, a case where the charge rate SOC of the battery 1 is displayed as the state of charge of the battery 1 will be described. The “power supply amount P to the external device 30” is a power value supplied to the external device 30 through the power supply port 3, and corresponds to a power consumption amount in the external device 30. Hereinafter, the charging rate SOC of the battery 1 is simply referred to as “charging rate SOC”, and the power supply amount P to the external device 30 is simply referred to as “power supply amount P”. These charging rate SOC and power supply amount P are acquired by BMU 6 described later.

  The display device 4 is provided in the vicinity of the charging port 2 and the power feeding port 3. That is, the display device 4 is provided at a position where the display contents can be viewed without moving on the spot when the user inserts the charging gun 21 into the charging port 2 or plugs the plug 31 into the power supply port 3. The display device 4 of the present embodiment is provided next to the power supply port 3 and is fixed to the housing 12. The position where the display device 4 is provided is not limited to this. The display device 4 may be provided, for example, next to the charging port 2 or may be provided on the inner surface of the lid 13 (the surface facing the casing 12 in the lid 13 in the closed state).

  The display device 4 of the present embodiment includes a first indicator 4a for displaying the charging rate SOC, a second indicator 4b for displaying the power supply amount P, and a board surface that supports each of the indicators 4a and 4b in a swingable manner. 4c and a plurality of scales 4d provided on the board surface 4c. The display device 4 displays the charging rate SOC when the first pointer 4a swings, and displays the power supply amount P when the second pointer 4b swings.

  The scale 4d is for displaying the maximum amount of power Pmax [W] that can be supplied to the external device 30. Each scale 4d of the present embodiment is formed of a light source (for example, an LED [Light Emitting Diode]). The display device 4 displays the maximum power amount Pmax by lighting any one of the scales 4d corresponding to the currently set maximum power amount Pmax. In this embodiment, the maximum power amount Pmax is set to any one of 1500 [W], 1200 [W], and 900 [W]. That is, the scale 4d of the present embodiment is disposed at positions corresponding to 1500 [W], 1200 [W], and 900 [W]. The positions of the hands 4a and 4b and the lighting state of the scales 4d are controlled by an ECU 7 described later.

  The notification light 5 warns the user that the power supply amount P may exceed the maximum power amount Pmax due to a change in the lighting state thereof, and the temperature Tb of the battery 1 (hereinafter referred to as battery temperature Tb). This is to notify the user that there is a possibility of the increase. The notification light 5 of this embodiment is formed in a frame shape surrounding the board surface 4 c of the display device 4. The lighting state of the notification light 5 is controlled by the ECU 7.

  As shown in FIGS. 1 and 3, the electric vehicle 10 is provided with a power supply switch 15 that switches between allowing and prohibiting external power supply and an open / close sensor 16 that detects the open / closed state of the lid 13. The power supply switch 15 is, for example, a toggle switch that can be switched between an on state and an off state, and is provided near the driver's seat. External power supply is allowed when the power supply switch 15 is operated to the on state, and is prohibited when the power supply switch 15 is operated to the off state. The open / close sensor 16 is detection means for detecting the open / closed state of the lid 13 and is provided, for example, in the vicinity of the lid 13.

  A BMU (Battery Management Unit) 6 and an ECU (Electronic Control Unit) 7 are electronic control devices mounted on the electric vehicle 10 and are configured as LSI devices or embedded devices in which a known microprocessor, ROM, RAM, etc. are integrated. Is done. These BMU 6 and ECU 7 are connected to the communication line of the in-vehicle network and can communicate with each other. The BMU 6 monitors the charge state and temperature state of the battery 1 so that the battery 1 is not overcharged or overdischarged. The ECU 7 is positioned higher than the BMU 6 and comprehensively manages the BMU 6 and other on-vehicle electronic control devices.

[2. Control configuration]
[2-1. Overview]
In the present embodiment, display control performed on the display device 4 and notification control and warning control performed on the notification light 5 will be described in detail. All of these controls are performed during external charging and external power feeding. The display control is control for causing the display device 4 to display information corresponding to the situation. In addition, the notification control and the warning control are controls for turning on the notification light 5 in order to alert the user as necessary. More specifically, the notification control is for notifying the user that the battery temperature Tb has risen and exceeded the threshold value, and the warning control is for warning the user that the power supply amount P is large. is there. All of these controls are performed by the ECU 7 based on various information acquired by the BMU 6.

First, external charging and external power feeding will be described. The electric vehicle 10 of the present embodiment can perform external charging when at least the following conditions A1 and A2 are satisfied.
Condition A1: The electric vehicle 10 is powered off Condition A2: The battery temperature Tb is lower than the upper limit temperature Tmax (Tb <Tmax)
The upper limit temperature Tmax is set in advance to the maximum value (or lower value) of the battery temperature Tb when the battery 1 can be charged and discharged safely.

In addition, the electric vehicle 10 of the present embodiment can perform external power feeding when at least all of the following conditions B1 to B4 are satisfied.
Condition B1: The electric vehicle 10 is in a power-on (runnable [READY]) condition B2: The battery temperature Tb is less than the upper limit temperature Tmax (Tb <Tmax)
Condition B3: The power supply amount P is less than or equal to the maximum power amount Pmax (P ≦ Pmax)
Condition B4: The power supply switch 15 is on

  As indicated by the above condition B3, external power supply is stopped (or limited) when the power supply amount P exceeds the maximum power amount Pmax. That is, in this case, since the load applied to the battery 1 may be excessive, a protection circuit for protecting the battery 1 works to automatically stop (or limit) the discharge of the battery 1. Therefore, care must be taken so that the power supply amount P does not exceed the maximum power amount Pmax during external power supply.

  Therefore, in the present embodiment, the power supply amount P and the maximum power amount Pmax are displayed on the display device 4 at the time of external power supply by display control, so that the user who inserts the plug 31 into the power supply port 3 on the spot can supply the power supply amount P and the maximum power amount. Make the amount Pmax visible. Thus, the user can easily take care that the power supply amount P does not exceed the maximum power amount Pmax at the time of external power supply, and it is easy to perform external power supply with peace of mind.

  Further, as indicated by the above conditions A1 and B1, external power feeding is not performed simultaneously with external charging. Therefore, in the present embodiment, the charging rate SOC is displayed on the display device 4 during external charging by display control, and the user who inserts the charging gun 21 into the charging port 2 can check the charging rate SOC on the spot. Thereby, the user can easily grasp the charging rate SOC, and it is easy to carry out external charging systematically. In the present embodiment, the charge rate SOC is displayed on the display device 4 even during external power feeding. Thereby, the user can predict how long the user can continue to use the external device 30.

  Further, as indicated by the above conditions A2 and B2, both external charging and external power feeding are stopped (or limited) when the battery temperature Tb becomes equal to or higher than the upper limit temperature Tmax. That is, in this case, since there is a possibility that the battery 1 cannot be charged / discharged safely, a protection circuit for protecting the battery 1 works to automatically stop (or limit) charging / discharging. Therefore, care must be taken so that the battery temperature Tb does not become too high during external charging and external power feeding.

  Therefore, in the present embodiment, the notification control notifies the user that the battery temperature Tb has exceeded the threshold during external charging and external power feeding. This makes it easier for the user to carry out external charging and external power feeding in a planned manner while taking care not to make the battery temperature Tb too high. For this reason, it becomes easy to avoid the situation where external charging and external power feeding are automatically stopped (or restricted).

  In the present embodiment, the warning control warns the user when the power supply amount P may exceed the maximum power amount Pmax during external power supply. This makes it easier for the user to take measures such as refraining from using the external device 30 at an appropriate timing. For this reason, it becomes easy to avoid the situation where external power feeding is automatically stopped (or restricted).

[2-2. BMU]
First, acquisition of various types of information performed by the BMU 6 will be described. The BMU 6 measures the battery temperature Tb and detects or calculates the charging rate SOC by a known method. Further, the BMU 6 detects whether or not external charging is performed based on the operation of the in-vehicle charger 17 (external charging is performed), and whether or not external power feeding is performed based on the operation of the inverter 18 (external charging). Whether or not power feeding is being performed) is detected. Further, the BMU 6 calculates or detects the power supply amount P based on the operation of the inverter 18 during external power supply.

  Here, “at the time of external charging” may include not only the time when the battery 1 is actually charged from the external power source 20 but also the time when this charging can be performed immediately. For example, the BMU 6 may determine that it is during external charging as long as the charging gun 21 is inserted into the charging port 2 even though the battery 1 is not actually charged. That is, the BMU 6 may determine whether it is during external charging based on, for example, whether or not the charging gun 21 is inserted into the charging port 2 instead of the operation of the on-vehicle charger 17 described above. .

  Similarly, “at the time of external power supply” here may include not only the time when power transmission from the battery 1 to the external device 30 is actually performed, but also the time when this power transmission can be performed immediately. . For example, the BMU 6 does not actually transmit power to the external device 30, but if the plug 31 is inserted into the power supply port 3 or the power supply switch 15 is turned on, the external power supply It may be determined that it is time. That is, instead of the operation of the inverter 18 described above, the BMU 6 is in the time of external power supply based on, for example, whether or not the plug 31 is inserted into the power supply port 3 and whether the power supply switch 15 is on or off. It may be judged.

  The BMU 6 of the present embodiment sets the maximum power amount Pmax that can be supplied to the external device 30 based on the measured battery temperature Tb. The maximum power amount Pmax is set so as to decrease as the battery temperature Tb increases. That is, the maximum power amount Pmax is a variable value that changes according to the change in the battery temperature Tb. This is because the battery temperature Tb increases as the power supply amount P increases. That is, the BMU 6 of the present embodiment prevents the increase in the power supply amount P by decreasing the maximum power amount Pmax as the battery temperature Tb is higher, thereby suppressing the increase in the battery temperature Tb.

  The BMU 6 refers to, for example, the map 8 shown in FIG. 4 and sets the maximum power amount Pmax corresponding to the measured battery temperature Tb as needed. In this map 8, the maximum power amount Pmax is set so as to decrease stepwise as the battery temperature Tb increases. The relationship between the battery temperature Tb and the maximum power amount Pmax is not limited to that defined in the map 8. For example, the maximum power amount Pmax may gradually (linearly) decrease as the battery temperature Tb increases.

[2-3. ECU]
Next, each control performed by the ECU 7 will be described. As described above, the ECU 7 of the present embodiment performs display control, notification control, and warning control when the lid 13 is in the open state. Whether or not the lid 13 is in an open state can be determined based on information transmitted from the open / close sensor 16, for example.

  First, display control will be described. When it is detected by the BMU 6 that external charging is in progress, the ECU 7 causes the display device 4 to display the charging rate SOC. Specifically, the ECU 7 controls the position of the first pointer 4a to a position corresponding to the current charging rate SOC acquired by the BMU 6. Therefore, as illustrated in FIG. 5A, during external charging, the display device 4 displays the charging rate SOC. In this case, the ECU 7 does not control the position of the second pointer 4b and the lighting state of the scale 4d. That is, at the time of external charging, the position of the second pointer 4b on the display device 4 is the initial position (for example, 0), and the scales 4d are all turned off.

  On the other hand, when it is detected by the BMU 6 that the external power supply is being performed, the ECU 7 causes the display device 4 to display the power supply amount P, the maximum power amount Pmax, and the charge rate SOC. Specifically, the ECU 7 controls the positions of the first pointer 4a and the second pointer 4b to positions corresponding to the current charging rate SOC and power supply amount P acquired by the BMU 6, respectively, and among the plurality of scales 4d , One corresponding to the current maximum power amount Pmax acquired by the BMU 6 is turned on. Therefore, as illustrated in FIG. 5B, during external power feeding, the display device 4 displays the power feeding amount P, the maximum power amount Pmax, and the charging rate SOC.

  Note that the ECU 7 does not control the position of the hands 4a and 4b and the lighting state of the scale 4d when it is detected that the BMU 6 is neither at the time of external charging nor at the time of external power feeding. In other words, in this case, the positions of the hands 4a and 4b are all at the initial position (for example, 0), and the scale 4d is in the off state.

Next, notification control will be described. The ECU 7 performs notification control when the following condition C1 is satisfied. Moreover, ECU7 determines the implementation content (notification method) of alerting | reporting control according to the success or failure of condition C2 shown below.
Condition C1: The battery temperature Tb is higher than the first temperature T1 (T1 <Tb)
Condition C2: The battery temperature Tb is higher than the second temperature T2 (T2 <Tb)

  The first temperature T1 is set in advance to a temperature (for example, 40 [° C.]) slightly higher than the battery temperature Tb in the normal use state of the battery 1. The second temperature T2 is set in advance to a temperature (for example, 50 [° C.]) that is higher than the first temperature T1 and slightly lower than the upper limit temperature Tmax. Thus, in the present embodiment, two threshold values, the first temperature T1 and the second temperature T2, are set in stages as threshold values for the battery temperature Tb used in the notification control.

  The fact that the condition C1 is satisfied and the condition C2 is not satisfied is that the battery temperature Tb is not high enough to refrain from charging / discharging the battery 1 at this time, but is likely to increase from now on, so a little attention is required. It means that there is. On the other hand, if both conditions C1 and C2 are satisfied, it means that the current battery temperature Tb is so high that it is necessary to refrain from charging / discharging the battery 1, and thus a situation requiring special attention is required.

  The ECU 7 determines the success or failure of the conditions C1 and C2 based on the battery temperature Tb measured by the BMU 6. Then, when the condition C1 is satisfied and the condition C2 is not satisfied, the ECU 7 of the present embodiment controls the lighting state of the notification light 5 to be the pattern A shown below, and both the conditions C1 and C2 are satisfied. In this case, the lighting state of the notification light 5 is controlled to be the pattern B shown below. That is, as illustrated in FIGS. 5C and 5D, the notification light 5 of the present embodiment has the battery temperature Tb exceeding the first temperature T <b> 1 because the lighting state is controlled to the pattern A. This is notified to the user, and the lighting state is controlled by the pattern B to notify the user that the battery temperature Tb has exceeded the second temperature T2. Thus, the notification light 5 of this embodiment notifies the user of an increase in the battery temperature Tb in two stages by controlling the lighting state to one of the two types of patterns A and B. That is, the notification light 5 notifies in a different manner every time the battery temperature Tb exceeds the first temperature T1 and the second temperature T2.

Pattern A: Flashing with a long (for example, 1 second) cycle Pattern B: Flashing with a short (for example, 0.5 second) cycle Pattern B has a shorter flashing cycle (faster flashing) than pattern A, and is more pressing It is for telling the user that it is. That is, it can be said that the pattern A is for calling attention to the user weakly, and the pattern B is for calling attention to the user strongly.

Next, warning control will be described. The ECU 7 performs warning control when the following condition D1 is satisfied.
Condition D1: The difference between the power supply amount P and the maximum power amount Pmax is less than a predetermined amount X (Pmax−P <X)
The predetermined amount X is set to an amount smaller than the currently set maximum power amount Pmax (for example, an amount of about 10% of the maximum power amount Pmax). Satisfying the condition D1 means that the current power supply amount P is so large that it is necessary to refrain from discharging the battery 1, and thus it is a situation that requires special attention.

  The ECU 7 determines the success or failure of the condition D1 based on the power supply amount P transmitted from the BMU 6. Then, the ECU 7 of this embodiment controls the lighting state of the notification light 5 to be the pattern B when the condition D1 is satisfied. That is, in this case, as illustrated in FIG. 5D, the notification light 5 gives a strong alert (warning) to the user.

  The ECU 7 gives priority to the warning control over the notification control. Specifically, the ECU 7 gives priority to the warning control so that the lighting state of the notification light 5 becomes the pattern B when the condition C1 is satisfied and the condition D1 is satisfied when the condition C2 is not satisfied. To control. This is because special attention is required when the condition D1 is satisfied as described above.

Further, the ECU 7 determines that neither of the conditions C1 and D1 is satisfied [the battery temperature Tb is equal to or lower than the first temperature T1 (Tb ≦ T1), and the difference between the power supply amount P and the maximum power amount Pmax is a predetermined amount X. In this case (X ≦ Pmax−P)], the lighting state of the notification light 5 is not controlled. That is, in this case, the notification light 5 is turned off.
Table 1 below shows the implementation conditions and implementation details of the display control, the notification control, and the warning control described above.

[3. flowchart]
FIG. 6 is a flowchart illustrating the contents of control performed in electric vehicle 10. This flowchart is repeatedly executed at a predetermined calculation cycle in the ECU 7 when the lid 13 is in the open state.

  In step S1, various information is input from the BMU 6. Various information input here is used in the following processing. In step S2, it is determined whether or not it is during external charging. If it is during external charging, the display device 4 is controlled to display the charging rate SOC in step S3, and the process proceeds to step S8.

  On the other hand, if it is determined in step S2 that it is not during external charging, it is determined in step S4 whether it is during external power feeding. In the case of external power supply, the display device 4 is controlled to display the charging rate SOC, the power supply amount P, and the maximum power amount Pmax in step S5, and in the subsequent step S6, the difference between the power supply amount P and the maximum power amount Pmax is determined. It is determined whether or not it is less than a predetermined amount X.

  If the difference between the power supply amount P and the maximum power amount Pmax is less than the predetermined amount X (YES route in step S6), warning control is performed. That is, it progresses to step S10 and it is controlled so that the notification light 5 gives a strong alert (the lighting state of the notification light 5 becomes the pattern B). Then, this flow is returned. On the other hand, if the difference between the power supply amount P and the maximum power amount Pmax is equal to or greater than the predetermined amount X (NO route of step S6), the processing after step S8 described later (processing related to notification control) is performed. If it is determined in step S4 that it is not during external power feeding, in step S7, the display device 4 is set to a state in which none of the charging rate SOC, the power feeding amount P, and the maximum power amount Pmax is displayed, and this flow is returned. . If the notification light 5 is on when the process proceeds to step S7, the notification light 5 is turned off.

  In step S8, it is determined whether or not the battery temperature Tb is higher than the first temperature T1, and when the battery temperature Tb is higher than the first temperature T1, notification control is performed. In this case, in subsequent step S9, it is determined whether or not the battery temperature Tb is higher than the second temperature T2. If the battery temperature Tb is higher than the second temperature T2, the notification light 5 is controlled to give a strong alert in step S10 (the lighting state of the notification light 5 is pattern B), and this flow is returned.

  On the other hand, if it is determined in step S9 that the battery temperature Tb is equal to or lower than the second temperature T2, the notification light 5 is weakly alerted in step S11 (the lighting state of the notification light 5 is pattern A). And return this flow. When it is determined in step S8 that the battery temperature Tb is equal to or lower than the first temperature T1, the notification light 5 is turned off in step S12, and this flow is returned.

[4. effect]
(1) In the electric vehicle 10 described above, the charging port 2 and the power feeding port 3 are provided adjacent to each other, and the display device 4 is provided in the vicinity thereof. The display device 4 displays the charging rate SOC at the time of external charging and the power supply amount P at the time of external power feeding. For this reason, the user of the electric vehicle 10 is in the spot (position where the charging port 2 and the power feeding port 3 can be seen) at the time of external charging and external power feeding, and information (charging rate SOC and power feeding amount P) according to the situation. I can grasp it. Therefore, convenience during external charging and external power feeding can be improved.

  (2) Since the display device 4 displays the maximum amount of power Pmax that can be supplied to the external device 30 at the time of external power feeding, the user can grasp how much additional power can be additionally supplied to the external device 30. it can. For this reason, the electric power of the battery 1 can be easily used to the maximum during external power feeding. Further, the user can confirm that the power supply amount P does not exceed the maximum power amount Pmax, and can obtain a sense of security.

  (3) Since the electric vehicle 10 is provided with the notification light 5 that warns the user when the difference between the power supply amount P and the maximum power amount Pmax is less than the predetermined amount X, the power supply amount P is set to the maximum power amount Pmax. When there is a possibility of exceeding, the user can be prompted to refrain from using the external device 30. As a result, the user can take measures to prevent the increase in the power supply amount P by refraining from using the external device 30 before the power supply amount P exceeds the maximum power amount Pmax. For this reason, the situation where external electric power feeding is stopped or restricted automatically can be avoided. Moreover, since it can avoid applying excessive load to the battery 1, it can contribute to protection of the battery 1. FIG.

  (4) Since the maximum power amount Pmax is set so as to decrease as the battery temperature Tb increases, the difference between the power supply amount P and the maximum power amount Pmax increases as the battery 1 has a higher temperature even if the power supply amount P is the same. It becomes easy to become less than the predetermined amount X, and it becomes easy to be warned. That is, the higher the temperature of the battery 1, the earlier the warning timing for the user. For this reason, the load concerning the battery 1 can be suppressed and the high temperature of the battery 1 can be suppressed more appropriately. Therefore, it can contribute to protection of the battery 1.

  (5) Since the electric vehicle 10 is provided with the notification light 5 for notifying the user that the battery temperature Tb exceeds the first temperature T1 or the second temperature T2, the battery 1 is hot during external charging or external power feeding. The user can be notified in advance when it is likely. Thereby, the user can grasp from the lighting state of the notification light 5 that there is a possibility that the battery temperature Tb becomes high, and can be careful that the battery temperature Tb does not become too high. In addition, when the user performs external charging or external power feeding in consideration of the state of the battery temperature Tb, the high temperature of the battery 1 is easily suppressed, which can contribute to protection of the battery 1.

  (6) Each time the battery temperature Tb exceeds the first temperature T1 and the second temperature T2 set in stages, the notification light 5 notifies the user in a different manner, so that the state of the battery temperature Tb is more The user can be notified in detail. As a result, the user can take more appropriate care so that the battery temperature Tb does not become too high, and it becomes easier to perform external charging or external power supply in a planned manner. Further, when the user performs external charging or external power feeding in consideration of the rising state of the battery temperature Tb, the temperature rise of the battery 1 can be further suppressed and it can contribute to the protection of the battery 1.

  (7) Since the display device 4 displays not only the power supply amount P but also the charging rate SOC at the time of external power supply, the user can predict how long the user can continue to use the external device 30, and the external power supply Can be implemented systematically. For this reason, the convenience at the time of external electric power feeding can be improved more.

  (8) Since the notification light 5 performs both the warning regarding the power supply amount P and the notification regarding the battery temperature Tb, the device cost can be reduced as compared with the case where the warning and the notification are performed by separate devices. In addition, the control configuration can be simplified. Further, in this notification light 5, warning control is prioritized over notification control, so that the user can be surely warned before the power supply amount P exceeds the maximum power amount Pmax, and the power supply amount P is the maximum power. A situation where the amount Pmax is exceeded can be more easily avoided.

[5. Modified example]
Regardless of the embodiment described above, various modifications can be made without departing from the spirit of the invention. Each structure of this embodiment can be selected as needed, or may be combined as appropriate.

  The configuration of the display device 4 is not limited to that shown in the above embodiment. For example, as shown in FIGS. 7A to 7D, the display device 4 may be configured by a liquid crystal panel 4e. In this case, the display device 4 may switch the content displayed on the liquid crystal panel 4e between external charging and external power feeding. That is, the liquid crystal panel 4e has a screen (see FIG. 7A) that displays the charge rate SOC as the remaining battery level during external charging, and the maximum power amount Pmax (for example, 1500 [W] as the power usage amount during external power feeding. ]) May be used as a screen [see FIG. 7 (b)]. When the charging rate SOC is also displayed at the time of external power feeding, for example, a screen displaying the charging rate SOC and a screen displaying the power feeding amount P with respect to the maximum power amount Pmax may be alternately displayed. Thus, when the display content of the display device 4 is switched, a display space for displaying information can be saved.

  The contents displayed on the display device 4 are not limited to those shown in the above embodiment. The electric vehicle 10 improves the convenience during external charging and external power supply as described above, as long as the display device 4 displays the charge rate SOC at the time of external charging and the power supply amount P during external power supply. Can be made.

  In the above-described embodiment, only the power supply port 3 provided on the vehicle body outer surface 11 is shown. However, the electric vehicle 10 includes a power supply port similar to the power supply port 3 in addition to the vehicle body outer surface 11 (for example, the vehicle interior). It may be. In this case, the maximum amount of power Pmax that can be supplied from the power supply port 3 provided on the outer surface 11 of the vehicle body to the external device 30 varies depending on the use state of the other power supply ports. It is preferable to display the maximum power amount Pmax in consideration of the usage state.

  Further, instead of controlling the lighting state of the notification light 5 to one of the patterns A and B as described above, the lighting color of the notification light 5 may be changed. For example, the notification light 5 may be lit in yellow instead of the pattern A (as a weak alert), and the notification light 5 may be lit in red as an alternative to the pattern B (as a strong alert). In this case, the notification light 5 is lit in blue instead of controlling the lighting state of the notification light 5 (the notification light 5 is turned off), and neither the notification control nor the warning control is performed. This may be shown to the user.

  In the above-described embodiment, the case where two of the first temperature T1 and the second temperature T2 are set as threshold values of the battery temperature Tb is illustrated, but the number of threshold values used in the notification control is not limited to two. If at least one threshold value is provided, the notification light 5 notifies the user that the battery temperature Tb has exceeded the threshold value, so that the battery 1 is likely to become hot as described above. I can inform you. Further, if three or more threshold values are set in stages, and the notification light 5 is notified by a different method every time the battery temperature Tb exceeds each threshold value, the state of the battery temperature Tb is more detailed than in the case of the above-described embodiment. Can inform the user.

  In the above-described embodiment, the case where both the warning regarding the power supply amount P and the notification regarding the battery temperature Tb are performed by the notification light 5 has been described. For example, as shown in FIGS. The notification may be performed on the liquid crystal panel 4e. That is, a sentence such as “There is a possibility that the battery temperature may rise” is displayed on the liquid crystal panel 4e as a weak alert, and a sentence such as “battery high temperature” may be displayed on the liquid crystal panel 4e as a strong alert.

  Alternatively, instead of the notification light 5, the lighting state of other light sources such as the illumination 14, the hazard lamp, and the indicator may be controlled, or a predetermined sound may be emitted from a speaker mounted on the electric vehicle 10. . Moreover, you may make it perform said warning and alerting | reporting by transmitting a predetermined signal to the terminal which a user carries. Further, the above-described specific examples of warning and notification may be combined as appropriate. In other words, the notification unit and the warning unit are not limited to the notification light 5 shown in the above embodiment, and various types can be applied.

DESCRIPTION OF SYMBOLS 1 Battery 2 Charging port 3 Feeding port 4 Display device 5 Notification light (warning means, notification means)
DESCRIPTION OF SYMBOLS 10 Electric vehicle 11 Car body outer surface 20 External power supply 21 Charging gun 30 External apparatus 31 Plug
P Power supply amount
Pmax maximum energy
SOC charge rate (charge state)
T1 First temperature (threshold)
T2 Second temperature (threshold)
Tb battery temperature

Claims (7)

A battery for driving that can be charged and discharged; and
A charging port provided on the outer surface of the vehicle body, into which a charging gun is inserted when externally charging the battery,
Provided adjacent to the charging port, a power supply port into which the plug of the external device is inserted during external power supply to transmit power from the battery to the external device;
A display device that is provided in the vicinity of the charging port and the power feeding port, and displays a charging state of the battery at the time of the external charging and at least a power supply amount to the external device during the external power feeding;
An electrically powered vehicle comprising: The electric vehicle according to claim 1, wherein the display device displays a maximum amount of power that can be supplied to the external device during the external power supply. The electric vehicle according to claim 1, further comprising a warning unit that warns a user when a difference between the power supply amount and a maximum power amount that can be supplied to the external device is less than a predetermined amount. The electric vehicle according to claim 2 or 3, wherein the maximum electric energy is set to decrease as the temperature of the battery increases. The electric vehicle according to any one of claims 1 to 4, further comprising notification means for notifying a user that the temperature of the battery has exceeded a threshold value. The said notification means has the said some threshold value set in steps, It notifies by a different method, whenever the temperature of the said battery exceeds each of these threshold values, The notification method of Claim 5 characterized by the above-mentioned. Electric vehicle. The electric vehicle according to claim 1, wherein the display device displays a state of charge of the battery during the external power feeding.

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