KR20210020645A - Control system and method for charging the electric vehicle - Google Patents

Abstract

The present invention relates to an electric vehicle charging control system and a method thereof. According to the present invention, an electric vehicle charging control system comprises: a mode selection unit capable of selecting one among a normal mode, a time setting mode, and a destination setting mode; a control unit for determining fast charging or slow charging according to the mode selected by the mode selection unit; a charging device for charging an electric vehicle according to a control signal from the control unit; and a display unit for displaying information about the battery state of charge (SOC) and charging of the electric vehicle according to the control signal of the control unit. Since it is possible to select the charging mode according to the driver′s preference, it is possible to optimize charging time or costs.

Description

Electric vehicle charging control system and method {CONTROL SYSTEM AND METHOD FOR CHARGING THE ELECTRIC VEHICLE}

The present invention relates to an electric vehicle charging control system and method capable of selecting a charging mode.

Interest in the development of eco-friendly vehicles is increasing as the most effective alternative to achieving the carbon dioxide reduction target amount by country due to the strengthening of international regulations on greenhouse gas emissions. The construction of an electric vehicle charging infrastructure is urgently needed in line with the currently completed electric vehicle mass production schedule.

Unlike general internal combustion engine vehicles, electric vehicles use a battery as a main power source, supply electric energy stored in the battery to an electric motor, and drive wheels by the electric motor.

The DC current of the battery is applied to the electric motor after being controlled as AC current by the converter and inverter, and drives the electric motor. It includes a BMS (Battery Management System), and a rechargeable secondary battery is used for the battery.

The prerequisite for dissemination of such electric vehicles is to construct a charging infrastructure, and countries around the world are in the process of deriving models for charging infrastructure configuration and service and conducting demonstration projects.

On the other hand, Korean Patent Registration No. 10-1308711 (hereinafter referred to as "prior patent") discloses an electric vehicle battery charging device.

The electric vehicle battery charging device of the prior patent is configured to charge by using a large-capacity charger initially when charging the battery, and then to switch to a low-capacity charger afterwards.

In the case of a conventional electric vehicle charger capable of fast and slow charging, the customer's choice is not reflected, and whether rapid or slow charging is determined according to the state of charge of the battery.

However, conventional electric vehicle chargers often have a problem in that the battery of the electric vehicle is charged with a time or cost that the user does not want.

The present invention has been created in order to solve the problems of the prior art, and an object of the present invention is to provide an electric vehicle charging control system and method that can be optimized in terms of charging time and cost by selecting a charging mode according to a driver or user's preference.

In order to achieve the above object, the electric vehicle charging control system according to the present invention includes: a mode selection unit capable of selecting one of a general mode, a time setting mode, and a destination setting mode; A control unit configured to determine fast charging or slow charging according to a selected mode of the mode selection unit; A charging device for charging an electric vehicle according to a control signal from the controller; And a display unit that displays information on SOC and charging of the battery of the electric vehicle according to a control signal from the control unit.

According to an example related to the present invention, the mode selection unit may include a rapid mode selection unit for selecting a rapid mode for the rapid charging; A mixing mode selection unit for selecting a mixing mode in which the rapid charging and the slow charging are simultaneously performed; And a slow mode selection unit for selecting a slow mode for slow charging.

According to an example related to the present invention, the mode selection unit may include a time setting unit for setting a charging time of the electric vehicle; And a destination setting unit for setting a destination of the electric vehicle.

According to an example related to the present invention, the normal mode is a mode for charging in a rapid or slow mode according to the charging state of the battery, and the control unit determines an estimated time required for full charging when the normal mode is selected through the display unit. It can be provided to the driver.

According to an example related to the present invention, the controller may perform rapid charging when the battery SOC is less than a preset value, and may perform slow charging when the battery SOC is greater than or equal to a preset value.

According to an example related to the present invention, the time setting mode is a mode in which the driver charges for a desired time, and the control unit controls the charging amount and mode selection at the end of charging for each mode through the display unit when the time setting mode is selected. It is possible to provide the user with the corresponding cost and time required for full charging.

According to an example related to the present invention, the destination setting mode is a mode for charging the amount of charge for driving a desired distance by the driver, and the control unit uses the display unit to charge each mode when the destination setting mode is selected. Costs according to time and mode can be provided to users.

The electric vehicle charging control method according to the present invention includes: selecting one of a general mode, a time setting mode, and a destination setting mode according to a preference of an electric vehicle driver; Sensing a battery SOC of the electric vehicle when the normal mode is selected; Performing rapid charging when the battery SOC is less than a preset value; And performing slow charging when the battery SOC is equal to or greater than the predetermined value.

According to an example related to the electric vehicle charging control method of the present invention, when the time setting mode is selected, outputting a battery SOC of the electric vehicle; Outputting a required time when fully charged in the normal mode; Setting whether to be fully charged; Charging in the normal mode when the full charge is performed; Inputting a charging time of the battery without performing the full charge; Outputting an estimated charging amount and cost at the end of charging for each of the rapid mode, rapid and slow mixed mode, and slow mode; And charging during the charging time in one mode selected from among the rapid mode, the mixed mode, and the slow mode.

According to an example related to the electric vehicle charging control method of the present invention, the method includes: inputting a destination when selecting the destination setting mode; Outputting a request SOC for driving to the destination; Comparing the current SOC of the battery with the requested SOC and outputting whether the electric vehicle needs to be charged; If the charging is required, outputting an estimated required time and cost during rapid charging for reaching the requested SOC, an estimated required time and cost during rapid and slow charging, and an expected required time and cost during slow charging; Charging in one mode selected from among the rapid mode for fast charging, the mixed mode for fast and slow charging, and the slow mode for slow charging.

According to an example related to the electric vehicle charging control method of the present invention, if the charging is not necessary, selecting a normal mode or a time setting mode according to a driver's preference; And charging according to the selected mode.

The effects of the electric vehicle charging control system and method according to the present invention will be described as follows.

First, it is possible to select a charging mode according to the driver's preference, thereby enabling optimization in terms of charging time or cost. This has a greater meaning when the cost of fast charging or slow charging varies.

Second, when charging the electric vehicle, it is possible to select any one of a charging mode, that is, a normal mode, a time setting mode, and a destination setting mode.

Third, when a driver or the like selects a mode, the electric vehicle can be charged at a desired time or cost according to the driver's preference by notifying the driver of the estimated charging time, the estimated charging amount, and the estimated cost according to the mode.

1 is a block diagram showing the configuration of an electric vehicle charging control system according to the present invention.
2 is a flowchart illustrating a method for controlling charging of an electric vehicle in a normal mode according to the present invention.
3 is a flowchart illustrating a method of controlling charging of an electric vehicle in a time setting mode according to the present invention.
4 is a flowchart illustrating a method of controlling charging of an electric vehicle in a destination setting mode according to the present invention.
5 is a conceptual diagram illustrating an embodiment according to a general mode of the present invention.
6 is a conceptual diagram illustrating an embodiment for performing full charging in a time setting mode according to the present invention.
7 is a conceptual diagram illustrating an embodiment for performing rapid charging in a time setting mode according to the present invention.
8 is a conceptual diagram illustrating an embodiment for performing slow charging in a time setting mode according to the present invention.
9 is a conceptual diagram illustrating an embodiment for performing a rapid mode in a destination setting mode according to the present invention.

Hereinafter, exemplary embodiments disclosed in the present specification will be described in detail with reference to the accompanying drawings, but identical or similar elements are denoted by the same reference numerals regardless of reference numerals, and redundant descriptions thereof will be omitted. The suffixes "module" and "unit" for components used in the following description are given or used interchangeably in consideration of only the ease of preparation of the specification, and do not have meanings or roles that are distinguished from each other by themselves. In addition, in describing the embodiments disclosed in the present specification, when it is determined that a detailed description of related known technologies may obscure the subject matter of the embodiments disclosed in the present specification, the detailed description thereof will be omitted. In addition, the accompanying drawings are for easy understanding of the embodiments disclosed in the present specification, and the technical idea disclosed in the present specification is not limited by the accompanying drawings, and all modifications included in the spirit and scope of the present invention It should be understood to include equivalents or substitutes.

Terms including ordinal numbers, such as first and second, may be used to describe various elements, but the elements are not limited by the terms. These terms are used only for the purpose of distinguishing one component from another component.

When a component is referred to as being "connected" or "connected" to another component, it is understood that it may be directly connected or connected to the other component, but other components may exist in the middle. Should be. On the other hand, when a component is referred to as being "directly connected" or "directly connected" to another component, it should be understood that there is no other component in the middle.

Singular expressions include plural expressions unless the context clearly indicates otherwise.

In the present application, terms such as "comprises" or "have" are intended to designate the presence of features, numbers, steps, actions, components, parts, or combinations thereof described in the specification, but one or more other features. It is to be understood that the presence or addition of elements or numbers, steps, actions, components, parts, or combinations thereof, does not preclude in advance.

1 is a block diagram showing the configuration of an electric vehicle charging control system according to the present invention.

The electric vehicle charging control apparatus of the present invention includes a mode selection unit 10, a time setting unit 11, a destination setting unit 12, a control unit 20, a fast/slow charging device 31, and a display unit 30. .

The mode selection unit 10 is configured to allow the user to select a mode. The modes can be classified into a general mode, a time setting mode, and a destination setting mode according to the driver's or user's preference.

The mode selection unit 10 may include a general mode selection unit, a time setting mode selection unit, and a destination setting mode selection unit. The user may select any one of a general mode selection unit, a time setting mode selection unit, and a destination setting mode selection unit.

The mode selection unit 10 may be implemented as a button type (push type), a slide type, a dial type, or a touch type. The mode selector 10 is configured to select one of three modes, that is, a normal mode, a time setting mode, and a destination setting mode.

The normal mode refers to a mode in which the battery is charged in a fast mode or a slow mode depending on the state of charge (SOC).

The time setting mode refers to a mode that charges only for a desired time according to a user's input. The time setting mode targets consumers who only want to charge for a limited time (TARGET). The time setting mode differs depending on the fast mode, fast + slow mixed mode, and slow mode.

The destination setting mode refers to a mode in which only the amount for driving a desired distance is charged. The destination setting mode has a different charging time depending on the mode.

Destination setting mode targets consumers who want to charge most of their batteries at home or near home.

The time setting unit 11 is configured to set a time desired by the user. The time setting unit 11 may be implemented as a button type, a dial type, or a touch type. The time setting unit 11 may be implemented to set the time through vehicle navigation or a separate electric vehicle charging app (APPLICATION) of a mobile phone.

The time setting unit 11 may be configured to input in units of hours and/or minutes.

The destination setting unit 12 is configured to set a place where the user wants to go. The destination setting unit 12 may be implemented to set a destination through vehicle navigation or a map app of a mobile phone.

The controller 20 is in charge of overall control for charging the electric vehicle. The control unit 20 is configured to enable bidirectional communication with an electric vehicle charging station. The control unit 20 may be mounted on an electric vehicle. The control unit 20 may be configured to enable bidirectional communication with the BMS of the electric vehicle.

The control unit 20 is configured to control the fast/slow charging device 31.

The fast/slow charging device 31 is made capable of rapidly or slow charging an electric battery according to a user's selection.

The display unit 30 is configured to display information on charging of the vehicle. The display unit 30 may display a mode selected by the user, a set time, a destination, and the like. The display unit 30 may display a charge amount of a battery and a map app.

The display unit 30 may be installed on a dashboard or the like inside an electric vehicle at a position that can be easily identified by a driver or a user.

The display unit 30 may be implemented as a display of a user's mobile phone.

2 is a flowchart illustrating a method for controlling charging of an electric vehicle in a normal mode according to the present invention.

When the user selects the general mode, the general mode is started (S100). In the normal mode, after parking, the battery is charged in a fast or slow mode depending on the SOC of the battery.

First, the SOC of the battery is detected. The SOC sensor can be mounted on the battery. The SOC sensor is made to detect the amount of battery charge.

Then, it is determined whether the measured SOC is smaller than a preset value (eg, 80%) (S110).

If the measured SOC is less than 80%, rapid charging is performed (S120).

If the measured SOC is greater than or equal to 80%, slow charging is performed (S140).

Subsequently, the SOC is measured again after rapid charging. It is determined whether the measured SOC is greater than a preset value (eg, 80%) (S130).

If the measured SOC is greater than or equal to 80%, slow charging is performed (S140). If the measured SOC is less than 80%, rapid charging is performed (S120).

Measure SOC after slow charging. It is determined whether the measured SOC has reached 100% (S150).

If the measured SOC is 100%, charging is completed (S160). If the measured SOC is less than 100%, slow charging is performed until full charge is performed (S140).

Normal mode provides an estimated time to full charge according to the current SOC.

However, since it is not possible to know when charging ends, information on the estimated charging amount and estimated cost is not provided.

3 is a flowchart illustrating a method of controlling charging of an electric vehicle in a time setting mode according to the present invention.

The user can select the time setting mode. The time setting mode is a mode in which the user can select one of a rapid mode, a rapid and slow mixing mode, and a slow mode when the user inputs the time to be charged. After setting the time, it can be fully charged by setting it to normal mode.

The time setting mode can only be charged for the desired time. However, the charging amount may vary depending on the mode.

When the time setting mode starts (S200), the controller 20 may measure the current SOC and output the SOC to the display unit 30 (S210).

Then, the control unit 20 outputs the required time when fully charged in the normal mode (S220).

Subsequently, the control unit 20 may inquire about whether to fully charge the user through the display unit 30 (S230).

When the user selects to fully charge the battery, the controller 20 charges the battery in the normal mode (S240).

When the battery is fully charged, it ends (S250).

The user may input the charging time (minutes/hours) through the time setting unit 11 without selecting full charging (S260).

The following information may be output according to the input charging time (S270).

-Estimated charging amount/cost output during rapid charging

-Expected charging amount/cost output for fast and slow charging

-Estimate charge amount/cost output at full charge

The user selects one of a fast mode, a fast and slow mixed mode, and a slow mode by referring to the estimated charge/cost for each mode.

The controller 20 may charge the battery according to the selected mode by controlling the fast/slow charging device (S280).

The controller 20 controls the fast/slow charging device, and ends charging after charging for the input charging time (S290).

In the time setting mode, the controller 20 may provide information such as an amount of charge at the end of charging for each mode in a fast mode, a mixed mode, and a slow mode, a cost according to mode selection, and a time required for full charging.

4 is a flowchart illustrating a method of controlling charging of an electric vehicle in a destination setting mode according to the present invention.

The user can set the destination setting mode. In the destination setting mode, when a user inputs a destination, whether charging is necessary or the amount of SOC to reach the destination is output, and charging in rapid mode, rapid and slow mixed mode, and slow mode.

First, when the destination setting mode is started (S300), the user inputs a destination through the destination setting unit 12 (S310).

Then, the control unit 20 outputs the SOC required for the vehicle to go to the destination (S320). The controller 20 may output a necessary SOC in consideration of this so that the remaining SOC amount becomes 20% upon arrival at the destination. However, the user can modify the target SOC to be charged.

Subsequently, the controller 20 may output whether or not charging is necessary (S330).

When charging is required, the following information may be output to the display unit 30 (S340).

-Estimated time/cost output for fast charging

-Estimated time/cost output for fast and slow charging

-Estimate time/cost output for full charging

Thereafter, the user can select one of a fast mode, a fast and slow mixed mode, and a slow mode by referring to the estimated time and cost for the output charging.

The controller 20 may control the slow/fast charging device to perform battery charging in the selected mode (S350).

The controller 20 charges the requested SOC or the target SOC and then ends (S360).

Meanwhile, when charging is not required, the user may select whether to charge or not (S370).

Thereafter, the user may terminate the electric vehicle without charging the battery (S374).

Alternatively, the user can charge the battery of the electric vehicle.

Thereafter, the user may select a normal mode or a time setting mode (S371).

Subsequently, the user may charge in one mode selected from the general mode and the time setting mode (S372).

Subsequently, charging is completed and then terminated (S373).

In the destination setting mode, the controller 20 may provide information such as a time required for charging for each mode and a cost according to mode selection.

5 is a conceptual diagram illustrating an embodiment according to a general mode of the present invention.

Users can control the charging of the electric vehicle through the charging app installed on the mobile phone. When the mobile phone charging app is executed, the mobile phone charging app allows the user to select any one of a normal mode, a time setting mode, and a destination setting mode.

This embodiment is carried out under the following conditions.

-Electric vehicle capacity: 50kWh

-Quick charger rating: 100kW

-Slow charger rating: 5kW

-Quick charging unit price: 200 won/kWh

-Slow charging unit price: 100 won/kWh

-Charging start time: 14:00 (2 PM)

The user can select the normal mode (step A). General mode, time setting mode and destination setting mode are displayed on the mobile phone display.

Then, when the normal mode is selected, information such as the time required for full charging and the cost may be provided on the mobile phone display as follows (step B).

Currently, the SOC is 20%, and it is fully charged in about 18 minutes on a fast charge and about 2 hours on a slow charge. In this case, the charging time is 2 hours and 18 minutes, and the charging cost may be 7,000 won.

Subsequently, it is possible for the user to decide whether to charge or not (step C).

You can ask the user whether to charge or not with the phrase “Would you like to start charging?” on the phone display.

Thereafter, if the user answers “Yes”, the phone display will say “Start charging” (Step D).

In addition, it displays the charging end time and a notice when charging ends during charging as shown below (step D).

The estimated charging end time is 16:18.

In addition, if charging is terminated during charging, charges will be charged according to the level of battery charge and charging mode.

Then, when charging is normally ended, it will guide you as follows (step E).

Charging is complete. The charging cost is 7,000 won.

In the case of shutdown during charging, the guidance is as follows (step F).

Charging has been interrupted. Currently, the SOC is 70%. The charging cost is 5000 won.

6 is a conceptual diagram illustrating an embodiment for performing full charging in a time setting mode according to the present invention.

The user can select the time setting mode in the executed charging app (step A).

Then, the user can choose between a full charge and a time setting (step B).

When full charging is selected, information such as the time required for full charging and the cost can be provided on the mobile phone display as follows (step C).

Currently, the SOC is 20%, and it is fully charged in about 18 minutes on a fast charge and about 2 hours on a slow charge. At this time, the charging time is 2 hours and 18 minutes, and the charging cost may be 7,000 won.

Subsequently, it is possible for the user to decide whether to charge or not (step D).

You can ask the user whether to charge or not with the phrase “Would you like to start charging?” on the phone display.

Thereafter, if the user answers “Yes”, the phone display will show “Start charging” (Step E).

In addition, it displays the charging end time and a notice when charging ends during charging as shown below (step E).

The estimated charging end time is 16:18.

In addition, if charging is terminated during charging, charges will be charged according to the level of battery charge and charging mode.

Then, when charging is normally ended, it will guide you as follows (Step F).

Charging is complete. The charging cost is 7,000 won.

In the case of shutdown during charging, the guidance is as follows (step G).

Charging has been interrupted. The charging cost is 5000 won. Please insert a card for refund.

7 is a conceptual diagram illustrating an embodiment for performing rapid charging in a time setting mode according to the present invention.

The user can select the time setting mode in the executed charging app (step A).

Then, the user can select the charging time (step B).

The phone display says “Please enter the desired charging time”.

The user may input 10 minutes for the charging time through the time setting unit 11.

In addition, the message “When charging in fast mode, when SOC reaches 80%, it will automatically be charged in slow mode” appears on the phone display.

Subsequently, when the charging time is input, the charging amount and charging cost for each mode can be provided on the mobile phone display as follows (step C).

1. Rapid + slow mode

-SOC at the end of charging: 53.3%

-Charging cost: 3332 won

Here, the rapid charging is performed only for the set 10 minutes, the SOC is 53.3% at the end of the charging, and the charging cost is 3332 won.

2. Rapid + slow mode

-SOC does not reach 80%, so it is not supported.

Here, since the SOC does not reach 80% even when the charging time is ended due to rapid charging, a service that automatically slows charging when the SOC reaches 80% is not supported.

3. Slow mode

-SOC at the end of charging: 21.6%

-Charging cost: 8.3 won

Here, in the case of slow charging, when charging for only 10 minutes, the SOC at the end of charging is 21.6%, and the charging cost is 8.3 won.

Subsequently, the user can select the rapid and slow mixing mode (quick charge).

When the mixed mode is selected, the following information is provided on the mobile phone display (step D).

You have selected the fast + slow mixing mode.

The charging end time is

It's 14:10.

When payment is complete, charging starts.

After that, when charging is completed normally after payment is completed, the following information is provided (step E).

Charging is complete.

8 is a conceptual diagram illustrating an embodiment for performing slow charging in a time setting mode according to the present invention.

The user can select the time setting mode in the executed charging app (step A).

Then, the user can select the charging time (step B).

The phone display says “Please enter the desired charging time”.

The user can input 60 minutes for the charging time through the time setting unit 11.

In addition, the message “When charging in fast mode, when SOC reaches 80%, it will automatically be charged in slow mode” appears on the phone display.

Subsequently, when the charging time is input, the charging amount and charging cost for each mode can be provided on the mobile phone display as follows (step C).

1. Rapid mode

-Since the SOC exceeds 80%, it operates in fast + slow mode.

Here, when charging for 60 minutes by rapid charging, the SOC exceeds 80%, and thus the rapid and slow mixing mode is operated.

2. Rapid + slow mode

-SOC at the end of charging: 88%

-Charging cost: 6400 won

3. Slow mode

-SOC at the end of charging: 30%

-Charging cost: 500 won

Subsequently, the user can select the slow mode (slow charge).

When the slow mode is selected, the following instructions are provided on the mobile phone display (step D).

You have selected slow mode.

The charging end time is 15:10.

When payment is complete, charging starts.

After that, when charging is completed normally after payment is completed, the following information is provided (step E).

Charging is complete.

9 is a conceptual diagram illustrating an embodiment for performing a rapid mode in a destination setting mode according to the present invention.

The user can select the destination setting mode in the executed charging app (step A).

Then, the user can select a destination (step B).

“Please enter your destination (current location: LG Electronics Seocho R&D Campus)” is displayed on the mobile phone display.

The user may input “LG Electronics Addition R&D Campus” to the destination through the destination setting unit 12.

Subsequently, when a destination is input, a map and a route and a request SOC can be output on the mobile phone display as follows (step C).

The distance to the destination is about 18 km.

The minimum SOC required is 60%.

Thereafter, the user may decide whether to charge or not (step D).

The following text is displayed on the phone display.

Currently, the SOC is 20%.

You need to recharge 40% to get to your destination.

Should I charge it?

1. Charge.

2. Do not charge

Then, when the user selects to charge, the control unit 20 may guide the time and cost for each mode (step E).

1. Rapid mode

-Charging time: 12 minutes

-Charging cost: 4000 won

2. Rapid + slow mode

-SOC does not reach 80%, so it is not supported.

3. Slow mode

-Charging time: 240 minutes

-Charging cost: 2000 won

Subsequently, the user can select the rapid mode (fast charging) (step F).

When the rapid mode is selected, the following information is provided on the mobile phone display (step F).

You have selected rapid mode.

The charging end time is 14:12.

When payment is complete, charging starts.

Thereafter, when charging is completed normally after payment is completed, the following information is provided (Step G).

Charging is complete.

Accordingly, according to the present invention, it is possible to select a charging mode according to the driver's preference, thereby enabling optimization in terms of charging time or cost. This has a greater meaning when the cost of fast charging or slow charging varies.

For example, when charging an electric vehicle, it is possible to select any one of a charging mode, that is, a normal mode, a time setting mode, and a destination setting mode.

When a driver or the like selects a mode, the electric vehicle can be charged at a desired time or cost according to the driver's preference by notifying the driver of the estimated charging time, estimated charging amount, and estimated cost according to the mode.

10: mode selection unit 11: time setting unit
12: destination setting unit 20: control unit
30: display unit 31: fast/slow charging device

Claims (11)

A mode selector capable of selecting one of a general mode, a time setting mode, and a destination setting mode;
A control unit configured to determine fast charging or slow charging according to a selected mode of the mode selection unit;
A charging device for charging an electric vehicle according to a control signal from the controller; And
An electric vehicle charging control system including a display unit for displaying information on a battery SOC and charging of the electric vehicle according to a control signal from the control unit. The method of claim 1,
The mode selection unit,
A rapid mode selection unit for selecting a rapid mode for the rapid charging;
A mixing mode selection unit for selecting a mixing mode in which the rapid charging and the slow charging are simultaneously performed; And
Electric vehicle charging control system comprising a slow mode selection unit for selecting a slow mode for the slow charging. The method of claim 1,
The mode selection unit,
A time setting unit for setting a charging time of the electric vehicle; And
Electric vehicle charging control system comprising a destination setting unit for setting the destination of the electric vehicle. The method of claim 1,
The normal mode is a mode for charging in a fast or slow mode according to the state of charge of the battery,
The control unit is an electric vehicle charging control system that provides a driver with an estimated time required for full charging when the normal mode is selected through the display unit. The method of claim 4,
The control unit performs rapid charging when the battery SOC is less than a preset value, and performs slow charging when the battery SOC is higher than a preset value. The method of claim 1,
The time setting mode is a mode in which the driver charges for a desired time,
When the time setting mode is selected, the control unit provides the user with a charge amount at the end of charging for each mode, a cost according to mode selection, and a time required for full charging through the display unit. The method of claim 6,
The destination setting mode is a mode in which a driver charges as much as a charge amount for driving a desired distance,
When the destination setting mode is selected, the control unit provides a user with a time required for charging for each mode and a cost according to the mode through the display unit. Selecting one of a general mode, a time setting mode, and a destination setting mode according to a preference of an electric vehicle driver;
Sensing a battery SOC of the electric vehicle when the normal mode is selected;
Performing rapid charging when the battery SOC is less than a preset value;
And performing slow charging when the battery SOC is greater than or equal to the preset value. The method of claim 8,
Outputting a battery SOC of the electric vehicle when the time setting mode is selected;
Outputting a required time when fully charged in the normal mode;
Setting whether to be fully charged;
Charging in the normal mode when the full charge is performed;
Inputting a charging time of the battery without performing the full charge;
Outputting an estimated charging amount and cost at the end of charging for each of the rapid mode, rapid and slow mixed mode, and slow mode; And
Charging an electric vehicle charging control method for the charging time in one mode selected from among the rapid mode, the mixed mode, and the slow mode. The method of claim 8,
Inputting a destination when selecting the destination setting mode;
Outputting a request SOC for driving to the destination;
Comparing the current SOC of the battery with the requested SOC and outputting whether the electric vehicle needs to be charged;
If the charging is required, outputting an estimated required time and cost during rapid charging for reaching the requested SOC, an estimated required time and cost during rapid and slow charging, and an expected required time and cost during slow charging;
The electric vehicle charging control method further comprising charging in one mode selected from among the fast mode for fast charging, the mixed mode for fast and slow charging, and the slow mode for slow charging. The method of claim 10,
Selecting a normal mode or a time setting mode according to a driver's preference when the charging is not required; And
Charging control method for an electric vehicle further comprising the step of charging according to the selected mode.

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