KR20160046481A - Apparatus and method for controlling charging electric vehicle - Google Patents

Abstract

The present invention proposes an electric vehicle charging control apparatus and method for controlling charging of an electric vehicle using both a fast charging mode and a low-speed charging mode. An electric vehicle charge control apparatus according to the present invention includes: a chargeable state determiner for determining whether it is possible to charge an electric vehicle in a fast charge mode or a slow charge mode; A high speed mode charge controller for charging the electric vehicle in the fast charge mode when it is determined that charging of the electric vehicle is possible only in the fast charge mode; A low speed mode charge controller for charging the electric vehicle in the low speed charge mode when it is determined that it is possible to charge the electric vehicle only in the low speed charge mode; And a mixed mode charge controller for charging the electric vehicle by sequentially using the fast charge mode and the slow charge mode when it is determined that charging of the electric vehicle is possible in both the fast charge mode and the slow charge mode.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001]

The present invention relates to an apparatus and a method for controlling charging of an electric vehicle. More particularly, the present invention relates to an apparatus and method for controlling charging of an electric vehicle having a rapid charging and a slow charging.

BACKGROUND OF THE INVENTION [0002] Electric vehicle charging technology is a technique for charging an electric vehicle in either one of a rapid charging mode and a slow charging mode. The rapid charging may include DC charging, and the slow charging may include AC charging.

In conventional electric vehicle charging systems, the fast charging and the rapid charging are separately applied to each physically separated port. In Korea, the fast-filling inlet adopts the 5-pin inlet according to the KS standard, and the fast-charging inlet uses the 10-pin inlet according to the Japanese standard CHAdeMO standard, so that the existing electric- And a separate interface for fast charging and fast charging, which includes a high-speed charging operation.

Recently, electric car manufacturers in North America and Europe have been trying to integrate the interface of the fast charging and fast charging physically into a single inlet, while the two types of charging methods of the fast charging and the fast charging are integrated and operated There is no systematic implementation.

Korean Patent Laid-Open Publication No. 2014-0078174 describes a charge control apparatus for an electric vehicle. However, the above-described problem can not be solved because the device charges and controls the electric vehicle using only the full charging mode.

SUMMARY OF THE INVENTION It is an object of the present invention to provide an electric vehicle charging control apparatus and method for controlling charging of an electric vehicle using both a fast charging mode and a low-speed charging mode.

However, the objects of the present invention are not limited to those mentioned above, and other objects not mentioned can be clearly understood by those skilled in the art from the following description.

SUMMARY OF THE INVENTION The present invention has been made in order to achieve the above-mentioned object, and it is an object of the present invention to provide an electric vehicle which can charge an electric vehicle in a fast charge mode or a low speed charge mode. A high speed mode charge controller for charging the electric vehicle in the fast charge mode if it is determined that it is possible to charge the electric vehicle only in the fast charge mode; A low speed mode charge controller for charging the electric vehicle in the low speed charge mode when it is determined that it is possible to charge the electric vehicle only in the low speed charge mode; And a hybrid mode charge controller for charging the electric vehicle using the fast charge mode and the slow charge mode in order, if it is determined that it is possible to charge the electric vehicle in both the fast charge mode and the slow charge mode To thereby provide an electric vehicle charge control device.

Preferably, the mixed-mode charging unit calculates a first time required to charge the electric vehicle based on a voltage input to the battery of the electric vehicle when charging in the fast-charge mode, Calculating a second time required to charge the electric vehicle based on a voltage input to the battery of the electric vehicle when the electric vehicle is charged with the electric power; A charging scenario determining unit for determining a charging scenario according to the specific gravity between the fast charging mode and the slow charging mode based on the first time and the second time; And a charge scenario executing unit for charging the electric vehicle first in the fast charge mode based on the charge scenario and charging the electric vehicle later in the low charge mode.

Preferably, the charging scenario determining unit determines a time to be used when charging in the fast charging mode with the charging scenario and a time to use when charging in the low-speed charging mode.

Preferably, the mixed mode charging unit further includes a battery checking unit for checking the state of the battery in real time when charging the electric vehicle in the fast charging mode.

Preferably, the battery check unit checks the state of the battery in real time based on a voltage input to the battery or a temperature of the battery.

Preferably, the charge scenario execution unit changes the charge mode from the fast charge mode to the slow charge mode when it is determined that the voltage input to the battery is equal to or higher than the reference voltage or the current temperature of the battery is equal to or higher than the reference temperature.

Preferably, the mixed mode charging unit changes the charging mode from the fast charging mode to the low-speed charging mode when it is determined that the predetermined time has elapsed or the charging amount is equal to or greater than the reference amount, or when the charging rate is determined to be equal to or higher than the reference rate.

Preferably, the mixed-mode charging unit changes the charging mode from the fast-charge mode to the low-speed charging mode when it is determined that the charging rate reaches 80%.

Further, the present invention provides a method for controlling an electric vehicle, comprising: determining whether it is possible to charge an electric vehicle in a fast charge mode or a low-speed charge mode; Charging the electric vehicle in the fast charge mode if it is determined that it is possible to charge the electric vehicle only in the fast charge mode; Charging the electric vehicle in the low-speed charging mode when it is determined that it is possible to charge the electric vehicle only in the low-speed charging mode; And charging the electric vehicle using the fast charge mode and the slow charge mode in order, if it is determined that it is possible to charge the electric vehicle in both the fast charge mode and the slow charge mode A method for controlling charging of an electric vehicle is proposed.

Preferably, the step of charging the electric vehicle using the fast charging mode and the low-speed charging mode sequentially includes charging the electric vehicle based on a voltage input to the battery of the electric vehicle when charging in the fast charging mode, Calculating a second time required to charge the electric vehicle based on a voltage input to the battery of the electric vehicle when the electric vehicle is charged in the low-speed charging mode; Determining a charging scenario according to the specific gravity between the fast charging mode and the slow charging mode based on the first time and the second time; And charging the electric vehicle first in the fast charge mode based on the charge scenario and charging the electric vehicle later in the slow charge mode.

Preferably, the determining step determines a time to be used when charging the fast charging mode with the charging scenario and a time to use when charging with the low-speed charging mode.

Preferably, the step of charging the electric vehicle using the fast charging mode and the low-speed charging mode sequentially includes: checking the state of the battery in real time when charging the electric vehicle in the fast charging mode .

Preferably, the checking step checks the state of the battery in real time based on a voltage input to the battery or a temperature of the battery.

Preferably, the step of charging the electric vehicle first with the fast-charge mode and charging the electric vehicle with the low-speed charge mode at a later time may include determining that the voltage input to the battery is greater than or equal to a reference voltage, The charging mode is changed from the fast charging mode to the low-speed charging mode.

Preferably, the step of charging the electric vehicle using the fast-charge mode and the low-speed charge mode in successive steps comprises: if it is determined that the predetermined time has elapsed or that the charge amount is equal to or greater than the reference amount, From the fast charge mode to the slow charge mode.

Preferably, the step of charging the electric vehicle using the fast-charge mode and the low-speed charge mode in succession may include: when the charge rate reaches 80%, changing the charge mode from the fast charge mode to the low- .

The present invention can achieve the following effects by controlling the charging of the electric vehicle by using both the fast charging mode and the low-speed charging mode.

First, if the battery charge of the electric vehicle is desired to be more than 80%, no additional charging operation is required until the charging is completed.

Secondly, it can be applied in all places where the car demo method is used in which the rapid charging and the continuous charging cable are separately existed.

1 is a conceptual diagram for explaining an electric vehicle charging system according to a first embodiment of the present invention.
2 is a flowchart illustrating an operation method of an electric vehicle charging system according to a first embodiment of the present invention.
3 is a flowchart illustrating an operation method of an electric vehicle charging system according to a second embodiment of the present invention.
4 is a flowchart for explaining a charging mode scenario determination method in an operation method of an electric vehicle charging system according to a second embodiment of the present invention.
5 is a conceptual diagram for explaining an electric vehicle charging system according to a second embodiment of the present invention.
6 is a flowchart illustrating a function performed by the charging time estimating unit in the electric vehicle charging system according to the second embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the drawings, the same reference numerals are used to designate the same or similar components throughout the drawings. In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear. In addition, the preferred embodiments of the present invention will be described below, but it is needless to say that the technical idea of the present invention is not limited thereto and can be variously modified by those skilled in the art.

In the present invention, when two cables are installed in an electric car having a quick charge and a slow charge, the user automatically switches to a quick charge after the quick charge, thereby preventing a user who wants to charge 100% from charging again during the charge. Hereinafter, a more detailed description will be given with reference to the drawings.

1 is a conceptual diagram for explaining an electric vehicle charging system according to a first embodiment of the present invention.

There are rapid charging and slow charging methods for electric cars. Rapid charging has a fast charging time, but it only charges up to 80% considering the optimization of battery performance and the efficiency of rapid charging speed.

In order for the user to charge up to 100%, it is necessary to switch to a slow charge or to force the quick charger to charge several times. Due to the characteristics of an electric car that takes a considerable amount of charging time, it is very rare for the user to wait until the charging is completed. However, in order to charge the battery 100% quickly, the user must wait in the vehicle.

In the present invention, when the fast charging cable and the full charging cable are both installed and charged, the present invention switches the rapid charging up to 80% and then automatically switches to the slow charging so that the user has to wait in the vehicle Avoid situations.

The electric vehicle charging system 100 includes a charging terminal determination unit 110, a charging control unit 120, a slow charging terminal 130, and a rapid charging terminal 140.

The fully charged terminal 130 includes a full charge cable for fully charging the electric vehicle, and the quick charge terminal 140 includes a quick charge cable for rapidly charging the electric car. In the present embodiment, the slow charging terminal 130 and the rapid charging terminal 140 are constructed separately.

The charging terminal determination unit 110 performs a function of determining whether or not a cable is installed in each of the charging terminals 130 and 140.

The charging control unit 120 controls the charging operation based on the determination result of the charging terminal determination unit 110.

2 is a flowchart illustrating an operation method of an electric vehicle charging system according to a first embodiment of the present invention.

The charging terminal determination unit 110 confirms whether or not the charging cable is installed at the start of charging (S210).

First, the charging terminal determination unit 110 determines whether the quick charging cable is installed (S220). If the quick charging cable is not mounted, the charging terminal determination unit 110 confirms whether the fast charging cable is installed (S280). If it is determined that the full charge cable is installed, the charge controller 120 performs the full charge through the full charge terminal 130 (S290). If it is determined that the charging cable is not attached, the charging control unit 120 controls the charging control unit 120 so that a predetermined time has elapsed. At this time, the electric vehicle charging system 100 may require the driver to install a quick-charge cable, a full-charge cable, or the like through a display device, an audio output device, or the like.

If it is determined that the quick charging cable is installed, the charging terminal determination unit 110 confirms whether the full charging cable is also installed (S230).

If the full charge cable is not mounted, the charge control unit 120 performs rapid charge only using the rapid charge terminal 140 (S270).

The charging control unit 120 starts the rapid charging using the rapid charging terminal 140 (S240). Thereafter, when the battery charge amount reaches 80% and the rapid charge is completed (S250), the charge control unit 120 terminates the rapid charge and starts the continuous charge (S260).

5 is a conceptual diagram for explaining an electric vehicle charging system according to a second embodiment of the present invention.

The electric vehicle charging system 500 according to the second embodiment of the present invention includes the continuous charge supply module 510, the rapid charge supply module 520, the battery charge control system 530, the display unit 540, and the vehicle controller 550 ).

The slow charge supply module 510 is for charging the electric car at a constant rate, and includes a household power source 512 and a DC-DC converter 511.

The rapid charge supply module 520 is for rapidly charging an electric vehicle, and includes a quick charge switch 522 and a quick charge power line 521.

The display unit 540 displays the battery charging state, the battery charging time, the battery charging mode, the danger warning, and the like so that they can be visually confirmed. In this embodiment, the display unit 540 and the speaker (not shown) may be further included. The speaker can perform a function to output audible confirmation of the battery charge state, the battery charge time, the battery charge mode, and the danger warning.

The vehicle controller 550 is a concept including ECUs for controlling vehicle devices.

The battery charging control system 530 is a control module for effectively charging the battery of the electric vehicle using the rapid charging mode and the full charging mode.

The battery charge control system 530 includes a port connection confirmation unit 531, a voltage / current / temperature measurement unit 532, a charge time estimation unit 533, a charge mode scenario determination unit 534, and a battery risk detection unit 535, .

The port connection confirmation unit 531 performs a function of determining the fast / slow charge connection state of the electric vehicle by using the fast charge supply module 510 and the rapid charge supply module 520. [

The voltage / current / temperature measuring unit 532 measures a voltage, an electric current, and the like input from an electric car battery or output from an electric car battery, and measures the temperature of the electric car battery.

The charge time estimating unit 533 calculates the charge time based on the voltage, current, and temperature measured by the voltage / current / temperature measuring unit 532. [

The charging time estimating unit 533 can calculate the charging time using the following equation (1).

_{t n = C [f Batt (} ΔSOC)] / (I OBC [f (V ac, ΔSOC)] - I LDC [f (ΔSOC)])

In the above, the unit of t _n is [Ah] / [A]. C [f _Batt (ΔSOC)] is the current amount of charge for the high voltage battery and is in [Ah]. I _OBC [f (V _ac , ΔSOC)] means the current output current of the charger according to the AC input voltage. I _LDC [f (ΔSOC)] is the current consumption of the LDC for the operation of the vehicle full-load during charging.

Hereinafter, the charging time estimating unit 533 will be described in more detail with reference to FIG.

6 is a flowchart illustrating a function performed by the charging time estimating unit in the electric vehicle charging system according to the second embodiment of the present invention.

First, the charge time estimating unit 533 calculates a battery charge target amount by considering the remaining charge amount of the high voltage battery to be charged (S610).

Then, the charging time estimating unit 533 obtains the output current of the charger that charges the high-voltage battery (S620).

Then, the charging time estimating unit 533 calculates the amount of current consumed by the electric load of the vehicle on which the high-voltage battery is mounted (S630).

Subsequently, the charge time estimating unit 533 subtracts the amount of current consumed by the electric load from the output current of the charger to calculate the battery charge current used to charge the high voltage battery (S640).

Then, the charge time estimating unit 533 calculates the charge time by dividing the battery charge target amount by the battery charge current (S650).

The battery charge target amount in the charge amount calculating step S610 corresponds to C [f _Batt (? SOC)] in Equation (1) and can be expressed as a function of the remaining charge amount? SOC of the high voltage battery. In this embodiment, for example, a map of the charging target amount according to the remaining charging amount of the high voltage battery is provided, and the battery charging target amount can be extracted from the map at the start of charging.

The output current calculation step S620 includes a step of obtaining an output of the charger according to a voltage input to the charger, a step of obtaining a charge average voltage from the start of charging of the high-voltage battery to the end of charging, And calculating the output current of the charger by dividing by the charge average voltage.

Considering that the voltage input to the charger will be around 110V or 220V or so, the output power curve linearly increases with voltage and is maintained at a constant value because it limits the current input to the charger, The output power is linearly increased from 100 V to 120 V due to the input current limitation as shown in FIG. 1, but is limited to 1.6 KW in the range of 120 V to 125 V and linearly increases in the output power from 195 V to 230 V, Range is limited to 3.3 KW, and the output of the charger is obtained according to the AC voltage input to the charger using the data of such characteristics. That is, the charger output is obtained by limiting the maximum value of the charger output according to the input voltage according to the input current limit input to the charger.

Further, the charge average voltage is determined as an average value of the open-circuit voltage until full charge according to the remaining charge amount of the high-voltage battery. The high voltage battery tends to gradually increase in the open voltage from the present remaining charge amount to the full charge and is charged to the average value of the voltage from the present remaining charge amount to the SOC 90% To determine the average voltage.

More practically, there will be a method of constructing a map of the charging average voltage with respect to the remaining charged amount, and selecting the charging average voltage corresponding to the present remaining charging amount from the map.

Therefore, the output current of the charger obtained in the output current calculation step S620 is expressed by I _OBC [f (V _ac ,? SOC)] in equation (1), and is a function of the AC input voltage and the remaining charge amount.

In the consumption current calculation step S630, the consumed energy of the current LDC is divided by the charging average voltage of the high-voltage battery.

That is, if the current cooling device of the vehicle is operated to divide the energy consumed by the LDC by the charge average voltage, the current consumed by the vehicle's electrical loads can be obtained through the _LDC . In this equation, I _LDC [ f (? SOC)], which is also a function of the remaining charge of the high voltage battery.

The battery charge current used for charging the high-voltage battery can be obtained by subtracting the amount of current consumed by the LDC in step S640 from the output current of the charger obtained as described above. In step S650, The division can ultimately estimate the time required to charge the high voltage battery relatively accurately.

The charging mode scenario determining unit 534 performs a function of determining a charging mode scenario based on the charging time estimated by the charging time estimating unit 533.

The battery danger detection unit 535 detects the dangerous state of the battery when charging the electric vehicle according to the charging mode scenario.

In this embodiment, repetitive continuous rapid charging can not be performed during rapid charging because the reason is as follows.

When the selection of the charging mode is detected, it is determined whether the selected charging mode is the selection of the rapid charging mode.

If it is determined that the rapid charge mode is not selected, the normal charge mode is entered and the charge operation is performed with a current of 20 A or less. If it is determined that the rapid charge mode is selected, the immediately previous charge mode is detected, It is determined whether charging has been performed or an abnormality has occurred in the charging operation.

If it is determined that there is an abnormality in the battery condition (temperature / voltage / current), the rapid charging mode is stopped and the advanced charging mode is entered.

However, if the user can adjust the condition for determining the state of the battery, the charging mode scenario can be set for the user. (60%) + slow speed (40%), or the fast speed (90%) or the slow speed (10%) in the urgent situation, .

Rapid charging increases the internal resistance of the battery, shortening the life of the battery and increasing the risk of the vehicle, so that the user can adjust the ratio of rapid charging and continuous charging always within the critical range.

That is, conventionally, such a charging mode scenario can not be changed, but in the present invention, the charging mode priority is determined by reflecting the charging voltage, the current, the battery temperature, the user request, etc., and the charging mode scenario can be changed for each user.

3 is a flowchart illustrating an operation method of an electric vehicle charging system according to a second embodiment of the present invention.

The port connection confirmation unit 531 confirms whether or not the charging cable is installed at the start of charging (S305).

First, the port connection confirmation unit 531 checks whether the quick charging cable is installed (S310).

If the quick charging cable is not attached, the port connection confirming unit 531 confirms whether or not the fast charging cable is installed (S350), and the main control unit of the battery charging control system 530 performs the fast charging (S355).

On the other hand, if it is determined that the quick charging cable is installed, the port connection confirming unit 531 confirms whether the full charging cable is also installed (S315).

If the full charge cable is not mounted, the main controller of the battery charge control system 530 starts rapid charging (S320).

On the other hand, if it is determined that the full charge cable is also installed, the voltage / current / temperature measuring unit 532 measures the battery voltage / current / temperature initial value (S325).

Thereafter, the charge time estimating unit 533 estimates the charge time (S330).

Thereafter, the charging mode scenario determining unit 534 confirms whether or not the charging scenario is set (S335).

If the user does not want to set the charging scenario, the battery charging control system 530 proceeds to the default charging scenario (S345). The default charging scenario in this embodiment is, for example, rapid 80% + slow 20%.

On the other hand, if the user wishes to set the charging scenario, the main controller of the battery charging control system 530 starts charging according to the determined charging mode scenario (S340).

Hereinafter, a method for determining the charge mode scenario will be described in more detail.

4 is a flowchart for explaining a charging mode scenario determination method in an operation method of an electric vehicle charging system according to a second embodiment of the present invention.

First, the voltage / current / temperature measuring unit 532 estimates the battery temperature, voltage, current, and the like according to the time when rapid charging progresses (S410).

Then, the charging time estimating unit 533 displays the estimated charging time, the battery performance table, and the like according to the charging mode selection in cooperation with the display unit 540 (S420).

Thereafter, the charging mode scenario determining unit 534 determines a scenario desired by the user based on the user input (S430).

Then, the main control part of the battery charging control system 530 starts charging according to the scenario (S440).

When the battery risk is detected in real time by the battery risk detector 534 during charging (S450), the main controller of the battery charging control system 530 determines whether the risk value is equal to or greater than a threshold value (S460).

If it is determined that the critical value is less than the threshold value, the main control unit of the battery charging control system 530 continues charging (S480). If it is determined that the critical value is equal to or greater than the threshold value, (S470).

Then, it is determined whether the main control unit of the battery charging control system 530 has completed charging (S490).

If it is determined that the charging has not been completed yet, the battery risk detection unit 534 continuously checks the state of the battery in real time (S450).

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention has been described with reference to Figs. Best Mode for Carrying Out the Invention Hereinafter, preferred forms of the present invention that can be inferred from the above embodiment will be described.

The electric vehicle charge control apparatus includes a chargeable determination unit, a high-speed mode charge control unit, a low-speed mode charge control unit, and a mixed-mode charge control unit. The electric vehicle charge control apparatus corresponds to the battery charge control system 530 of Fig.

The chargeable determination unit performs a function of determining whether it is possible to charge the electric vehicle in the fast charge mode or the low-speed charge mode. The chargeable judgment unit is a concept corresponding to the port connection confirmation unit 531 of FIG.

The high speed mode charge control unit charges the electric vehicle in the fast charge mode when it is determined that it is possible to charge the electric vehicle only in the fast charge mode.

The low speed mode charge control unit charges the electric vehicle in the low speed charge mode when it is determined that it is possible to charge the electric vehicle only in the low speed charge mode.

When it is determined that charging of the electric vehicle is possible in both of the fast charging mode and the low-speed charging mode, the mixed-mode charging controller performs the function of charging the electric vehicle by sequentially using the fast charging mode and the low-speed charging mode. The mixed mode charge control unit is a concept corresponding to a combination of a voltage / current / temperature measurement unit 532, a charge time estimation unit 533, a charge mode scenario determination unit 534, a battery risk detection unit 535, and the like.

The mixed mode charging unit may include a charging time calculation unit, a charging scenario determination unit, and a charging scenario execution unit.

The charging time calculation unit calculates a first time required to charge the electric vehicle based on a voltage input to the battery of the electric vehicle when the electric vehicle is charged in the fast charging mode, And calculates a second time required to charge the electric vehicle based on the input voltage.

The charging scenario determining unit determines a charging scenario according to the specific gravity between the fast charging mode and the low-speed charging mode based on the first time and the second time. The charging scenario determining unit can determine the time to be used for charging in the fast charging mode and the time for charging in the low speed charging mode in the charging scenario.

The charge scenario execution unit performs a function of first charging the electric vehicle in the fast charge mode and charging the later electric vehicle in the slow charge mode based on the charge scenario.

The mixed mode charging unit may further include a battery checking unit.

The battery check unit performs a function of checking the state of the battery in real time when charging the electric vehicle in the fast charge mode.

The battery checking unit can check the state of the battery in real time based on the voltage input to the battery or the temperature of the battery.

At this time, the charge scenario execution unit can change the charge mode from the fast charge mode to the slow charge mode if it is determined that the voltage input to the battery is equal to or higher than the reference voltage or the current temperature of the battery is equal to or higher than the reference temperature.

This function of the charge scenario executor is in mind of the possibility of electric vehicle battery overheating.

On the other hand, it is also possible to change the charging mode from the fast charging mode to the low-speed charging mode if it is determined that the predetermined time has elapsed or the charging amount is equal to or higher than the reference amount, or if it is determined that the charging rate is equal to or higher than the reference rate. In this case, if it is determined that the charge ratio reaches 80%, the charge mode can be changed from the fast charge mode to the slow charge mode.

Next, an operation method of the electric vehicle charging control apparatus will be described.

The chargeable determination unit first determines whether it is possible to charge the electric vehicle in the fast charge mode or the slow charge mode.

If it is determined that it is possible to charge the electric vehicle only in the fast charge mode, the high speed mode charge control unit charges the electric vehicle in the fast charge mode.

When it is judged that it is possible to charge the electric vehicle only in the low-speed charge mode, the low-speed mode charge control unit charges the electric vehicle in the low-speed charge mode.

When it is judged that it is possible to charge the electric vehicle in both the fast charging mode and the low-speed charging mode, the mixed-mode charge control unit sequentially charges the electric vehicle using the fast charging mode and the low-speed charging mode.

This step can be specified as follows.

A first time period required for charging the electric vehicle based on the voltage input to the battery of the electric vehicle when the hybrid mode charge control unit charges the battery in the fast charge mode is calculated, Lt; RTI ID = 0.0 > time < / RTI > to charge the electric vehicle based on the voltage input to the vehicle.

Then, the mixed mode charge controller determines a charge scenario based on the ratio between the fast charge mode and the slow charge mode based on the first time and the second time.

Thereafter, the mixed mode charge controller charges the electric vehicle first in the fast charge mode based on the charge scenario and charges the electric vehicle later in the slow charge mode.

Meanwhile, when the hybrid mode charge control unit charges the electric vehicle in the fast charge mode at the same time as the step (charging the electric vehicle first in the fast charge mode and charging the later electric vehicle in the slow charge mode) Can be checked.

It is to be understood that the present invention is not limited to these embodiments, and all elements constituting the embodiment of the present invention described above are described as being combined or operated in one operation. That is, within the scope of the present invention, all of the components may be selectively coupled to one or more of them. In addition, although all of the components may be implemented as one independent hardware, some or all of the components may be selectively combined to perform a part or all of the functions in one or a plurality of hardware. As shown in FIG. In addition, such a computer program may be stored in a computer readable medium such as a USB memory, a CD disk, a flash memory, etc., and read and executed by a computer to implement an embodiment of the present invention. As the recording medium of the computer program, a magnetic recording medium, an optical recording medium, a carrier wave medium, and the like can be included.

Furthermore, all terms including technical or scientific terms have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs, unless otherwise defined in the Detailed Description. Commonly used terms, such as predefined terms, should be interpreted to be consistent with the contextual meanings of the related art, and are not to be construed as ideal or overly formal, unless expressly defined to the contrary.

It will be apparent to those skilled in the art that various modifications, substitutions and substitutions are possible, without departing from the scope and spirit of the invention as disclosed in the accompanying claims. will be. Therefore, the embodiments disclosed in the present invention and the accompanying drawings are intended to illustrate and not to limit the technical spirit of the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments and the accompanying drawings . The scope of protection of the present invention should be construed according to the following claims, and all technical ideas within the scope of equivalents should be construed as falling within the scope of the present invention.

Claims (13)

A chargeable state judging unit for judging whether it is possible to charge the electric vehicle in a fast charge mode or a low speed charge mode;
A high speed mode charge controller for charging the electric vehicle in the fast charge mode if it is determined that it is possible to charge the electric vehicle only in the fast charge mode;
A low speed mode charge controller for charging the electric vehicle in the low speed charge mode when it is determined that it is possible to charge the electric vehicle only in the low speed charge mode; And
Wherein when the electric vehicle is determined to be able to charge the electric vehicle in both the fast charging mode and the low-speed charging mode, the hybrid mode charging controller
And a control unit for controlling the electric vehicle. The method according to claim 1,
The mixed-
Calculating a first time required to charge the electric vehicle based on a voltage input to the battery of the electric vehicle when the electric vehicle is charged in the fast charge mode, A charging time calculation unit for calculating a second time required to charge the electric vehicle based on an input voltage;
A charging scenario determining unit for determining a charging scenario according to the specific gravity between the fast charging mode and the slow charging mode based on the first time and the second time; And
A charge scenario execution unit for charging the electric vehicle first in the fast charge mode based on the charge scenario and charging the electric vehicle later in the slow charge mode,
And a control unit for controlling the electric vehicle. 3. The method of claim 2,
Wherein the charging scenario determining unit determines a time to be used for charging in the fast charging mode and a time to be used for charging in the low-speed charging mode in the charging scenario. 3. The method of claim 2,
The mixed-
A battery check unit for checking the state of the battery in real time when charging the electric vehicle in the fast charge mode,
Further comprising a control unit for controlling the charging of the electric vehicle. 5. The method of claim 4,
Wherein the battery checking unit checks the state of the battery in real time based on a voltage input to the battery or a temperature of the battery. 6. The method of claim 5,
Wherein the charge scenario execution unit changes the charge mode from the fast charge mode to the slow charge mode when it is determined that the voltage input to the battery is equal to or higher than the reference voltage or the current temperature of the battery is equal to or higher than the reference temperature. controller. The method according to claim 1,
Wherein the mixed mode charging unit changes the charging mode from the fast charging mode to the low charging mode when it is determined that the predetermined time has elapsed or the charging amount is equal to or greater than the reference amount, Device. 8. The method of claim 7,
Wherein the mixed-mode charging unit changes the charging mode from the fast-charge mode to the low-speed charging mode when it is determined that the charging rate reaches 80%. Determining whether it is possible to charge the electric vehicle in a fast charge mode or a slow charge mode;
Charging the electric vehicle in the fast charge mode if it is determined that it is possible to charge the electric vehicle only in the fast charge mode;
Charging the electric vehicle in the low-speed charging mode when it is determined that it is possible to charge the electric vehicle only in the low-speed charging mode; And
Charging the electric vehicle using the fast charging mode and the low-speed charging mode in order, if it is determined that it is possible to charge the electric vehicle in both the fast charging mode and the low-
And a control unit for controlling the charging of the electric vehicle. 10. The method of claim 9,
Wherein the step of charging the electric vehicle using the fast charge mode and the slow charge mode,
Calculating a first time required to charge the electric vehicle based on a voltage input to the battery of the electric vehicle when the electric vehicle is charged in the fast charge mode, Calculating a second time required to charge the electric vehicle based on an input voltage;
Determining a charging scenario according to the specific gravity between the fast charging mode and the slow charging mode based on the first time and the second time; And
Charging the electric vehicle first in the fast charging mode and charging the electric vehicle later in the low-speed charging mode based on the charging scenario
And a control unit for controlling the charging of the electric vehicle. 11. The method of claim 10,
Wherein the step of charging the electric vehicle using the fast charge mode and the slow charge mode,
Checking the state of the battery in real time when charging the electric vehicle in the fast charge mode
Further comprising the steps of: 12. The method of claim 11,
Wherein the checking step checks the state of the battery in real time based on a voltage input to the battery or a temperature of the battery. 13. The method of claim 12,
Charging the electric vehicle first in the fast charging mode and charging the electric vehicle later in the low-speed charging mode may be performed when the voltage input to the battery is determined to be equal to or higher than the reference voltage or the current temperature of the battery is equal to or higher than the reference temperature Mode is changed from the fast-charge mode to the low-speed charge mode.

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