JP2017192172A - Charge state display device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a charge state display device with which a user can easily understand a standby time up to charge start time of an electric car.SOLUTION: A charge state display device 10 includes a direction indicator 26 which is a display part capable of being visually recognized from the outside of an electric car. A timer setting part 1202 accepts setting of a charge start time to a battery of the electric car. A connection detecting part 1204 detects connection of an external charge connector to the electric car. A display control part 1206 displays a standby time up to the charge start time on a display part when a connection of the external charge connector to the electric car is detected by the connection detecting part 1204.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a charging state display device that displays a charging state of an electric vehicle.

2. Description of the Related Art Conventionally, an electric vehicle that travels by driving an electric motor using electric power has been widespread. Charging the battery of an electric vehicle uses ordinary power generated by the vehicle such as regenerative power generation of the motor or driving the generator by an internal combustion engine, or using a quick charger provided at a charging stand or a household power source In general, a charger is connected to a charging port provided in an electric vehicle and electric power supplied from the outside is used.
In order to allow the user to know the state of charge of the electric vehicle during charging using such an external power supply, for example, Patent Document 1 listed below discloses display means mounted on a site that can be viewed from outside the vehicle, and the capacity of the battery. There has been proposed a technique for providing a battery capacity detecting means for detecting the battery capacity and a display control means for outputting the battery capacity data sent from the battery capacity detecting means to the display means.

JP 2000-102104 A

A timer charging function capable of setting a charging start time when performing charging using an external power source has been put into practical use. When the timer charging function is used, charging is not started until a preset charging start time even after the external power source is connected. Such a timer charging function is effective, for example, when it is desired to perform charging during the night power hours set by the power company.
The timer charging function is set using, for example, an input interface provided in the electric vehicle or an information terminal such as a smart phone that can be set to the electric vehicle charging system.

On the other hand, whether or not the timer charging function is turned on cannot be confirmed unless the input interface or information terminal in the electric vehicle is activated. Depending on the user's situation, it may be desirable to start charging immediately after connecting the external power supply without using timer charging. In such a case, if the timer charging function is turned on, charging as intended by the user Cannot be performed, and convenience is reduced.
This invention is made | formed in view of such a situation, The objective is to enable a user to grasp | ascertain easily the standby | waiting time until the charge start time of an electric vehicle.

In order to achieve the above-mentioned object, a charging state display device according to the invention of claim 1 is provided in an electric vehicle, and is visible from the outside of the electric vehicle, and a charging start time for the battery of the electric vehicle. A timer setting unit that accepts the setting, a connection detection unit that detects connection of the external charging connector to the electric vehicle, and a connection detection unit that detects the connection of the external charging connector to the electric vehicle, A display control unit that displays on the display unit a standby time until the charging start time.
In the charging state display device according to a second aspect of the present invention, a recommended charging time zone for recommending charging of the electric vehicle is set in the timer setting unit, and the charge setting display device is based on a current charging rate of the battery. A required time calculation unit for calculating a required charge time until the battery reaches a predetermined charge rate, and whether or not the battery reaches a predetermined charge rate within the recommended charge time zone when charging is started from the charge start time And a completion determination unit that determines whether the display control unit changes a display mode of the display unit based on a determination result of the completion determination unit.
According to a third aspect of the present invention, the display unit includes a plurality of light emitters, and the display control unit includes a number of the light emitters corresponding to a waiting time until the charge start time. And when the battery does not reach a predetermined charging rate within the recommended charging time zone, the number of light emitters corresponding to the excess time from the recommended charging time zone is turned on in a display mode different from other light emitting bodies. It is characterized by that.
In the charging state display device according to a fourth aspect of the present invention, the display control unit includes a time zone included in the recommended charging time zone if the charging start time is advanced among the excess time from the recommended charging time zone. In some cases, the number of light emitters corresponding to the time zone is lit in a different display mode.
According to a fifth aspect of the present invention, in the charging state display device, the display control unit has a light emitter corresponding to an excess time from the recommended charging time zone rather than the number of light emitters corresponding to a standby time until the charge start time. When the number of light emitters is larger, the remaining light emitters are turned on for the remaining number of light emitters corresponding to the standby time until the charging start time.
According to a sixth aspect of the present invention, the display unit includes a plurality of light emitters, and the display control unit includes a number of the light emitters corresponding to a standby time until the charge start time. Is turned on.
The charging state display device according to a seventh aspect of the invention is characterized in that the display unit is a direction indicator lamp of the electric vehicle having the plurality of light emitters.

According to the first aspect of the present invention, since the waiting time from the connection of the external charging connector to the charging start time is displayed, the user can determine whether or not the charging is started immediately and how many hours later the charging is started. This can be confirmed without activating the timer charging function setting interface. As a result, it is possible to prevent inconveniences such as charging not being completed at a user's desired time or being charged outside a user's desired time zone.
According to the invention of claim 2, since it is determined whether or not the battery has a predetermined charging rate within the recommended charging time zone, and the display mode of the display unit is changed based on the determination result, charging is recommended charging time. The user can grasp in advance whether or not to end the band, which is advantageous in improving the convenience of the timer charging function.
According to the invention of claim 3, the user can grasp whether or not the charging is completed within the recommended charging time zone before starting the charging, and if necessary, the charging start time can be changed or the timer charging function can be set. The release can be performed, which is advantageous in improving the convenience of the timer charging function.
According to the invention of claim 4, it is possible to notify the user whether or not the charging time included in the recommended charging time zone can be increased by advancing the charging start time, and it is easy to shorten the excess time. Is advantageous.
According to the invention of claim 5, the user can grasp the excess time from the recommended charging time zone together with the standby time until the start of charging, and if necessary, change the charging start time or cancel the timer charging function. This is advantageous in improving the convenience of the timer charging function.
According to the invention of claim 6, since the number of light emitters corresponding to the standby time until the charging start time is turned on, the user can intuitively recognize the standby time.
According to the seventh aspect of the present invention, since the direction indicator lamp also serves as the display unit, it is advantageous in reducing the cost of the vehicle as compared with the case where a dedicated display unit for displaying the standby time is provided. .

It is explanatory drawing which shows the external appearance of the electric vehicle 20 with which the charge condition display apparatus 10 is mounted. 2 is a block diagram showing a configuration of a charging state display device 10. FIG. It is explanatory drawing which shows an example of the display mode by the display control part 1206. FIG. 4 is a flowchart showing processing of the charging state display device 10. It is a block diagram which shows the structure of the charge condition display apparatus 10 concerning Embodiment 2. FIG. It is explanatory drawing which shows an example of the display mode based on the determination result of the completion determination part 1210. FIG.

(Embodiment 1)
Exemplary embodiments of a state of charge display device according to the present invention will be described below in detail with reference to the accompanying drawings.
FIG. 1 is an explanatory diagram showing an external appearance of an electric vehicle 20 on which a charging state display device 10 is mounted.
The charging state display device 10 (see FIG. 2) according to the embodiment is mounted on an electric vehicle 20. The electric vehicle 20 is an electric vehicle, a hybrid vehicle, or the like, and travels by driving a driving motor (not shown) using electric power in the battery 22.
A charging port 24 to which a charger 30 is connected when the electric vehicle 20 is charged is provided outside the vehicle body of the electric vehicle 20.

The charger 30 supplies power from an external power source to the electric vehicle 20 to charge the battery 22.
In the present embodiment, it is assumed that charger 30 is a normal charger that performs charging using a household power source.
The charger 30 includes a main body 302, a charging cable 304, an external charging connector 306, and the like.
The main body 302 is provided with a charger control unit that controls the operation of the charger 30, a user interface that displays a charging state, a charging setting, an operation screen, and the like of the charger 30.
A charging cable 304 extends from the main body 302, and an external charging connector 306 is provided on the charging cable 304.
A connecting portion 308 connected to the vehicle-side connector 244 is provided at the tip of the external charging connector 306. In addition to the power supply terminal for supplying power to the electric vehicle 20, the coupling unit 308 has a control current terminal for supplying a contactor control current used for on / off control of the contactor of the charging circuit provided in the electric vehicle 20. A data terminal and the like for exchanging data with the electric vehicle 20 are provided.

  The charging port 24 of the electric vehicle 20 is covered with a lid 242, and a vehicle-side connector 244 is provided therein. When charging the electric vehicle 20, the lid 242 is opened and the external charging connector 306 is inserted into the charging port 24, and the coupling portion 308 on the charger 30 side and the vehicle-side connector 244 on the electric vehicle 20 side are connected to supply electric power. Give and receive.

FIG. 2 is a block diagram illustrating a configuration of the charging state display device 10.
The charging state display device 10 includes a direction indicator lamp 26, a touch panel 28, an information terminal 40 and an ECU 12.
The direction indicator lamp 26 functions as a display unit that is visible from the outside of the electric vehicle 20. The turn signal lamp 26 also serves as a display unit, which is advantageous in reducing the cost of the electric vehicle 20 as compared with the case where a dedicated display unit for displaying the standby time is provided.
As shown in FIG. 1, the direction indicator lamps 26 are provided on the left and right sides of the vehicle body of the electric vehicle 20, and each direction indicator lamp 26 includes a plurality of light emitters L (L1 to L24). Each light emitter L (L1 to L24) is, for example, an LED bulb, and can individually control the lighting mode (lighting, extinguishing, blinking, etc.) and lighting color by a display control unit 1206 of the ECU 12 described later.
As shown in FIG. 3 and the like, it is assumed that the direction indicator lamp 26 has 24 light emitters L in the present embodiment. This is because one day is 24 hours and one light emitter L represents one hour. Note that the number of light emitters L may be, for example, 12 which is a divisor of 24, 8, 6, or any other number.
When the electric vehicle 20 is traveling, the direction indicator lamp 26 is switched on and off according to the driver's direction instruction switch operation and steering operation. Further, as described later, when the connection of the external charging connector 306 to the electric vehicle 20 is detected, the lighting mode of each light emitter L is switched according to the standby time until the charging start time.
In this embodiment, the rear direction indicator lamp on the left side of the vehicle closest to the charging port 24 is used as a display unit that displays the time until the charging start time. Note that the display unit is not limited to the direction indicator lamp 26, and other illuminations provided outside the electric vehicle 20 may be used, or a dedicated display device for displaying a standby time until the charging start time may be provided. .

  The touch panel 28 and the information terminal 40 receive various information related to the electric vehicle 20 and various settings. The touch panel 28 is provided, for example, in the electric vehicle 20 and serves also as a display of a navigation device. The information terminal 40 is, for example, a smartphone owned by the user, and exchanges information with the ECU 12 by wireless LAN communication, for example.

The ECU 12 includes a CPU, a ROM that stores and stores a control program, a RAM as an operation area of the control program, an EEPROM that holds various data in a rewritable manner, an interface unit that interfaces with peripheral circuits, and the like. Then, the entire electric vehicle 20 is controlled.
ECU12 implement | achieves the timer setting part 1202, the connection detection part 1204, and the display control part 1206, when the said CPU runs a control program.

The timer setting unit 1202 is a functional unit that controls the timer charging function, and accepts on / off setting of the timer charging function and setting of the charging start time for the battery 22 of the electric vehicle 20.
When the timer charging function is off, charging is started immediately when the external charging connector 306 is connected to the charging port 24 (vehicle-side connector 244). On the other hand, when the timer charging function is on, charging is not started until the preset charging start time even after the external charging connector 306 is connected to the charging port 24 (vehicle-side connector 244).
As the charging start time, for example, a fixed time may be set every day, or a different time may be set for each day of the week.
The setting of the charging start time in the timer setting unit 1202 is performed via the touch panel 28 and the information terminal 40, for example. In addition, the setting state of the timer charging function, specifically the on / off of the timer charging function, the charging start time, and the like can be confirmed on the touch panel 28 and the information terminal 40.

In general, when charging is started, charging is continued until the battery 22 is fully charged. When the battery 22 is fully charged, charging ends. However, a charging rate at which charging ends (hereinafter referred to as “charging end”). The charging rate ”) may be arbitrarily set. For example, when the battery 22 approaches full charge, the amount of charge power per unit time decreases and the charge time increases. On the other hand, a user who does not have a long trip distance may not necessarily need to be fully charged.
For this reason, it is good also as a setting which can complete | finish charge at the time of becoming the charge completion | finish charge rate (for example, charge rate 80% etc.) set by the user previously.

  The connection detection unit 1204 detects the connection of the external charging connector 306 to the electric vehicle 20. The connection detection unit 1204 detects, for example, that the external charging connector 306 is connected to the electric vehicle 20 when the coupling unit 308 of the external charging connector 306 is connected to the vehicle-side connector 244 and a signal from the data terminal is input. .

When the connection of the external charging connector 306 to the electric vehicle 20 is detected, the display control unit 1206 displays a standby time from the current time to the charging start time on the display unit.
In the present embodiment, the display unit is a direction indicator lamp 26 having a plurality of light emitters L, and the display controller 1206 lights up the number of light emitters L corresponding to the standby time until the charging start time. By lighting the number of light emitters corresponding to the standby time until the charging start time, the user can intuitively recognize the standby time.

FIG. 3 is an explanatory diagram illustrating an example of a display mode by the display control unit 1206.
It is assumed that the direction indicator lamp 26 is composed of a total of 24 light emitters L (L1 to L24) in which two sets of 12 light emitters L are arranged in the horizontal direction.
FIG. 3A shows a display when the timer charging function is off. When the timer charging function is turned off, charging starts immediately when the external charging connector 306 is connected to the electric vehicle 20, so that the waiting time until the charging start time is zero. Therefore, the display control unit 1206 does not cause any light emitter L to emit light.

In FIG. 3B, the timer charging function is turned on, the current time (when the external charging connector 306 is connected) is set to 17:00 (5 pm), and the charging start time is set to 23:00 (11:00 pm) on that day. It is a display when there is. In this case, the standby time until the charging start time is 6 hours. Therefore, the display control unit 1206 causes the six light emitters L (L1 to L6) to emit light.
In FIG. 3B, six light emitters L are caused to emit light in the horizontal direction from the upper left, but the positions of the light emitters L to be lit are not limited to this.
In FIG. 3B, the six light emitters L are turned on with one hour as one unit time. However, the present invention is not limited to this. For example, the number of times is set to a unit time of another time such as 2 hours or 30 minutes. The light emitter L may be turned on. In addition, when there is a fraction from the unit time in the waiting time (in this embodiment, the time is in minutes), various conventionally known countermeasures such as raising or lowering the half-time of the unit time as a boundary are used. Applicable.
Further, when the standby time until the charging start time exceeds 24 hours (exceeds the number of light emitters L), for example, when a day of the week for charging is set, all the light emitters L ( L1 to L24) may be caused to emit light, and for example, the illuminant L may be blinked or the luminescent color may be different from normal to indicate that the standby time is a time exceeding the number of the illuminants L. .

By displaying the waiting time until the charging start time in this way, the user can indicate that charging is not started immediately and how many hours later the charging is started by an interface for setting the timer charging function (touch panel 28 or information). This can be confirmed without activating the terminal 40). As a result, it is possible to prevent inconveniences such as charging not being completed at a user's desired time or being charged outside a user's desired time zone.
If the user wants to start charging immediately or wants to start charging at a time earlier or later than the currently set charging start time, the setting can be changed using the touch panel 28 or the information terminal 40. Good.

FIG. 4 is a flowchart showing the processing of the charge state display device 10.
When connection detection unit 1204 detects connection of external charging connector 306 to electric vehicle 20 (step S400: Yes), timer setting unit 1202 determines whether or not the timer charging function is on (step S402). . If the timer charging function is off (step S402: No), charging is started as it is (step S404).
On the other hand, when the timer charging function is on (step S402: Yes), the timer setting unit 1202 calculates a standby time from the current time to the set charging start time (step S406). Then, the display control unit 1206 turns on the number of light emitters L corresponding to the standby time (step S408).
Until a predetermined time (for example, the time when the user after getting off the vehicle is predicted to leave the vicinity of the electric vehicle 20, about several minutes) has passed (step S410: No), the process returns to step S408 and the lighting of the light emitter L is continued. To do.
Then, when the predetermined time has elapsed (step S410: Yes), the light-emitting body L that has been lit is extinguished (step S412), and the processing according to this flowchart ends.

(Embodiment 2)
In the second embodiment, a case will be described in which display on the display unit is performed in consideration of a recommended charging time zone in which charging of the electric vehicle 20 is recommended in addition to the contents of the first embodiment.
In addition, in Embodiment 2, the same code | symbol is attached | subjected about the location similar to Embodiment 1, and detailed description is abbreviate | omitted.

FIG. 5 is a block diagram of the configuration of the charge state display device 10 according to the second embodiment.
In the second embodiment, a recommended charging time zone for recommending charging of the electric vehicle 20 is set for the timer setting unit 1202. The recommended charging time zone is a time zone in which there are advantageous conditions for charging compared to other time zones. For example, a nighttime power application time zone set by an electric power company (for example, from 11 pm to 7 am the next day) ). Night electricity has a merit that the electricity charge per unit amount of electricity is set lower than other hours, so charging at this time makes the electricity charge cheaper.
The recommended charging time zone may be a time zone other than the nighttime power application time zone, for example, a time zone arbitrarily set by the user.

  For example, the timer setting unit 1202 may learn the user's life cycle and set the recommended charging time zone based on the learning result. The user's life cycle is, for example, the time when the user gets on the electric vehicle 20 and leaves home. In this case, for example, the time when the external charging connector 306 is pulled out (released) from the electric vehicle 20 is learned as the user's departure time, and this departure time is set as the end time of the recommended charging time zone. This life cycle may be learned, for example, by day of the week, weekday or weekend / holiday.

The charging state display device 10 illustrated in FIG. 5 includes a required time calculation unit 1208 and a completion determination unit 1210 in addition to the configuration illustrated in FIG.
The required time calculation unit 1208 calculates the required charging time until the battery 22 reaches a predetermined charging rate based on the current charging rate of the battery 22. The predetermined charging rate is a charging rate set as a charging end charging rate, and is generally 100% charging rate.
The required time calculation unit 1208 acquires the current charging rate of the battery 22 from, for example, a BMU (Battery Management Unit) 23 that manages and controls the battery 22. Further, the charging voltage of the charger 30 connected to the electric vehicle 20 is referred to via the vehicle-side connector 244. Then, based on the characteristic information of the battery 22 and the like, the required charging time from the current charging rate to the charging end charging rate is calculated.

Completion determination unit 1210 determines whether or not battery 22 reaches a predetermined charging rate (charging end charging rate) within the recommended charging time zone when charging starts from the charging start time set in timer setting unit 1202. To do.
For example, assuming that the time from the charging start time to the end time of the recommended charging time zone is A and the required charging time calculated by the required time calculation unit 1208 is B, the battery 22 is predetermined within the recommended charging time zone when A ≧ B. It is determined that the charging rate is reached, that is, charging is completed within the recommended charging time zone. When A <B, it is determined that the battery 22 does not reach a predetermined charging rate within the recommended charging time zone, that is, charging is not completed within the recommended charging time zone.
Since the required charging time B is not a fixed value, it may be determined whether charging is completed by including a predetermined margin in the required charging time B.

The display control unit changes the display mode of the display unit based on the determination result of the completion determination unit 1210.
FIG. 6 is an explanatory diagram illustrating an example of a display mode based on the determination result of the completion determination unit 1210.
6A to 6D, it is assumed that the recommended charging time zone is set from 23:00 to 7:00 on the next day.
FIG. 6A shows that the current time (when the external charging connector 306 is connected) is set to 17:00 (5 pm), the charging start time is set to 23:00 (11:00 pm) on the day, and the required charging time is 6 hours. It is a display example in the case of being calculated.
In this case, the standby time until the charging start time is 6 hours. Therefore, the display control unit 1206 causes the six light emitters L (L1 to L6) to emit light.
Further, when charging is started from 23:00, the charging end time is predicted to be 6 hours later, that is, 5:00 am, so that the battery 22 reaches the charging end charging rate within the recommended charging time zone.
Therefore, the display control unit 1206 lights all six light emitters L (L1 to L6) in green, which is a normal lighting color.

FIG. 6B shows that the current time (when the external charging connector 306 is connected) is set to 17:00 (5 pm), the charging start time is set to 23:00 (11:00 pm) on the day, and the required charging time is 10 hours. It is a display example in the case of being calculated.
In this case, the standby time until the charging start time is 6 hours as in FIG. 6A. Therefore, the display control unit 1206 causes the six light emitters L (L1 to L6) to emit light as in FIG. 6A.
On the other hand, when charging is started from 23:00, the charging end time is predicted to be 10 hours later, that is, 9:00 am, so that the battery 22 does not reach the charging end charging rate within the recommended charging time zone, and 2 hours Overtime occurs.
Therefore, the display control unit 1206 lights six of the six light emitters L (L1 to L6) corresponding to the excess time in red, which is a non-normal lighting color, and the remaining four are green, which is a normal lighting color. Turn on with.
That is, the display control unit 1206 turns on the number of light emitters L corresponding to the standby time until the charging start time, and when the battery 22 does not reach the predetermined charging rate (charging end charging rate) within the recommended charging time zone. Turns on the number of light-emitting bodies L corresponding to the excess time from the recommended charging time zone in a display mode (lighting color) different from that of the other light-emitting bodies L.
By doing so, the user can know whether or not charging is completed within the recommended charging time zone before starting charging, and if necessary, changing the charging start time, canceling the timer charging function, etc. This is advantageous in improving the convenience of the timer charging function.

FIG. 6C shows that the current time (when the external charging connector 306 is connected) is set to 22:00 (10:00 pm), the charging start time is set to 23:00 (11:00 pm) on the day, and the required charging time is 12 hours. It is a display example in the case of being calculated.
In this case, the waiting time until the charging start time is 1 hour. Therefore, the display control unit 1206 causes one light emitter L (L1) to emit light.
On the other hand, when charging is started from 23:00, the charging end time is predicted to be 12 hours later, that is, 11:00 am, so that the battery 22 does not reach the charging end charging rate within the recommended charging time zone, and 4 hours. Overtime occurs.
In the example of FIG. 6B, since the excess time is shorter than the standby time, it is possible to display the excess time by diverting the illuminant L that is emitting light as the display indicating the standby time. However, in the example of FIG. 6C, since the excess time is longer than the standby time, the display indicating the excess time cannot be performed only by diverting the illuminant L1 that is emitted as the display indicating the standby time.
Therefore, the display control unit 1206 lights one light emitter L (L1) corresponding to the standby time in red, which is a non-normal lighting color, and corresponds to the remaining excess time at a position away from the light emitter L1. The two light emitters L (L10 to L12) are turned on in red, which is an unusual lighting color.
That is, the display control unit 1206 performs charging when the number of light emitters L corresponding to the excess time from the recommended charging time zone is larger than the number of light emitters L corresponding to the standby time until the charging start time. The remaining number of light emitters that are separated from the light emitter L corresponding to the waiting time until the start time are turned on.
In this way, the user can grasp the excess time from the recommended charging time zone as well as the standby time until the start of charging, and if necessary, change the charging start time, cancel the timer charging function, etc. This is advantageous in improving the convenience of the timer charging function.

FIG. 6D shows that the current time (when the external charging connector 306 is connected) is set to 17:00 (5 pm), the charging start time is set to 24:00 (midnight), and the required charging time is 10 hours. It is a display example in the case of being calculated.
In this case, the waiting time until the charging start time is 7 hours. Therefore, the display control unit 1206 causes the seven light emitters L (L1 to L7) to emit light.
On the other hand, when charging is started from 24:00, the charging end time is predicted to be 10 hours later, that is, 10:00 am, so the battery 22 does not reach the charging end charging rate within the recommended charging time zone, and 3 hours Overtime occurs.
Here, while the charging start time is 24:00, the recommended charging time zone is from 23:00. Therefore, if the charging start time is advanced by 1 hour, the excess time from the recommended charging time zone is shortened to 2 hours.
Therefore, the display control unit 1206 lights four of the seven light emitters L (L1 to L7) corresponding to the standby time (L1 to L4) in green, which is a normal lighting color, and corresponds to the excess time. Three (L5 to L7) are lit in a non-normally lit color. Of these three non-normally lit colors, one illuminant (L7) corresponding to a time that can be shortened by advancing the charging start time is further different from red, which is the non-normally lit color used in the above description. Lights up in orange, which is an unusual lighting color. The remaining two light emitters L5 and L6 are lit in red, which is a non-normally lit color.
That is, if there is a time zone included in the recommended charging time zone if the charging start time is advanced ahead of the excess time from the recommended charging time zone, the display control unit 1206 emits the number of lights corresponding to the time zone. The body L is lit in a different display mode.
By doing this, it is possible to notify the user whether or not the charging time included in the recommended charging time zone can be increased by changing the charging start time, which is advantageous in easily reducing the excess time. It becomes.

  In FIG. 6, the display mode is changed by changing the lighting colors of the light emitters L. However, the display mode is not limited to this. The display mode may be varied.

  As described above, according to the charging state display device 10 according to the second embodiment, it is determined whether or not the battery 22 has a predetermined charging rate within the recommended charging time zone, and the display unit is based on the determination result. Since the display mode is changed, the user can know in advance whether or not the charging is completed within the recommended charging time zone, which is advantageous in improving the convenience of the timer charging function.

  DESCRIPTION OF SYMBOLS 10 ... Charge condition display apparatus, 12 ... ECU, 1202 ... Timer setting part, 1204 ... Connection detection part, 1206 ... Display control part, 1208 ... Required time calculation part, 1210 ... Completion determination part, 20 …… Electric car, 22 …… Battery, 24 …… Charging port, 242 …… Cover, 244 …… Vehicle connector, 26 …… Direction lamp, 28 …… Touch panel, 30 …… Charger, 302 …… Main unit 304, charging cable, 306 external connector, 308 coupling unit, 40 information terminal.

Claims (7)

A display unit provided in the electric vehicle and visible from the outside of the electric vehicle;
A timer setting unit for receiving a setting of a charging start time for the battery of the electric vehicle;
A connection detector for detecting connection of an external charging connector to the electric vehicle;
When the connection detection unit detects the connection of the external charging connector to the electric vehicle, the display control unit displays a waiting time until the charging start time on the display unit;
A charge state display device comprising: In the timer setting unit, a recommended charging time zone that recommends charging the electric vehicle is set,
A required time calculation unit that calculates a required charge time until the battery reaches a predetermined charge rate based on the current charge rate of the battery;
A completion determining unit that determines whether or not the battery has a predetermined charging rate within the recommended charging time zone when charging is started from the charging start time; and
The display control unit changes a display mode of the display unit based on a determination result of the completion determination unit.
The charge state display device according to claim 1. The display unit has a plurality of light emitters,
The display control unit turns on the number of the light emitters corresponding to the standby time until the charging start time, and the recommended charging time zone when the battery does not reach a predetermined charging rate within the recommended charging time zone. The number of illuminants corresponding to the excess time from is lit in a display mode different from other illuminants,
The charge state display device according to claim 2. If there is a time zone included in the recommended charging time zone if the charging start time is advanced in the excess time from the recommended charging time zone, the display control unit, the number corresponding to the time zone Illuminate the illuminant in a different display mode,
The charge state display device according to claim 3. When the number of light emitters corresponding to the excess time from the recommended charging time zone is greater than the number of light emitters corresponding to the standby time until the charge start time, the display control unit starts the charge Illuminate the remaining number of illuminants at a distance from the illuminant corresponding to the waiting time until the time,
The charge state display device according to claim 3 or 4, characterized by the above. The display unit has a plurality of light emitters,
The display control unit turns on the number of the light emitters corresponding to the standby time until the charging start time,
The charge state display device according to claim 1 or 2, characterized in that. The display unit is a direction indicator lamp of the electric vehicle having the plurality of light emitters.
The charge state display device according to any one of claims 1 to 6, wherein

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