KR20230114454A - Electric vehicle charging device using charging power distribution - Google Patents

Abstract

The present invention relates to an electric vehicle charging apparatus using charging electric power distribution. According to the present invention, depending on slow charging or fast charging, multiple electric vehicles can be efficiently charged at the same time through different electric power distribution methods, shortening a charging waiting time. The implemented electric vehicle charging apparatus using the charging electric power distribution comprises: a main control unit which charges the electric vehicles through the slow charging, detects a load charging status in real time with a charging electric power supplied to a plurality of chargers, and simultaneously charges the multiple electric vehicles by distributing the charging electric power according to the load charging status detected in real time; and the plurality of chargers which charge the connected electric vehicle with the charging electric power distributed according to control of the main control unit.

Description

Electric vehicle charging device using charging power distribution}

The present invention relates to an electric vehicle charging device using charging power distribution, and in particular, charging power capable of reducing charging waiting time by simultaneously and efficiently charging multiple electric vehicles through different power distribution methods according to slow charging or rapid charging. It relates to an electric vehicle charging device using distribution.

As the use of eco-friendly energy rapidly increases, the spread of electric vehicles (electric vehicles) is expanding, as well as the spread of electric vehicle chargers for charging electric vehicles.

These EVs can be charged through two charging modes: slow charging and fast charging.

Rapid charging is a charging mode that allows charging with 50kw or 100kw power at an early time, but reaching full charge in about 40 minutes. It is mainly installed and operated at highway rest areas, district offices, and large-scale parking lots.

Slow charging is a method of charging at a relatively slow rate compared to the rapid charging, and the amount of power is about 3 to 7 kw, and the charging time is about 6 to 8 hours. It is mainly installed and operated in apartment parking lots.

The electric vehicle charger charges the connected electric vehicle, but the charging power available for charging is predetermined.

Therefore, even if several chargers are provided under the same charging power, charging is performed only in the order in which the chargers are actually connected.

In other words, assuming that the charging power is the capacity to charge two electric vehicles and there are three chargers, if the first two connected electric cars consume all the charging power, the third electric car connected later will not actually charge. No or very minimal charging takes a lot of time to charge.

As described above, the existing charger has a disadvantage in that it is impossible to simultaneously charge a plurality of electric vehicles through power distribution, and thus the electric vehicle charging efficiency is lowered.

Conventional technologies for electric vehicle charging systems are disclosed in <Patent Document 1> to <Patent Document 5> below.

In the prior art disclosed in <Patent Document 1>, a plurality of independently provided chargers are collectively controlled to distribute and control power supply to a load.

However, such <Patent Document 1> has a disadvantage in that load balancing is possible only in a situation where rapid charging or communication with an electric vehicle, which is a load, is possible, and cannot be applied to load balancing in a situation where communication with a load is impossible, such as slow charging.

In addition, the prior art disclosed in <Patent Document 2> relates to an electric vehicle charging control device that controls a plurality of chargers in one master controller and implements each charger to have only minimum basic functions, and can communicate. , It is possible to reduce the cost of installing a charging system by connecting multiple slave chargers to one basic master charger equipped with a power sharing function so that they can be charged simultaneously in many parking areas.

In addition, the prior art disclosed in <Patent Document 3> is provided with a power module for providing charging power directly input to the vehicle, a power line connected to the vehicle, and a plurality of kiosks connected to the power module, the power module, each Implement a vehicle charging device that charges an electric vehicle by including a control unit that sequentially distributes charging power to a kiosk.

In addition, the prior art disclosed in <Patent Document 4> includes a first charging module array including a plurality of first charging modules for supplying power to a first output terminal formed at the end of the first power supply path through the first power supply path. , A second charging module array including a plurality of second charging modules having a second power supply path intersecting the first power supply path and provided at each intersection of the first power supply path and the second power supply path to supply power Including a first relay for controlling the power supply set to the first output stage through a combination of the first charging module and the second charging module by the control of the first relay. Through this configuration, a matrix-type electric vehicle charging device is provided that allows a plurality of users to select and combine the amount of power by the charging modules arranged to have a matrix structure.

In addition, the prior art disclosed in <Patent Document 5> calculates the charging condition of the currently usable vehicle in the controller, displays the charging condition, which is the current charging speed selectable by the driver, on the interface according to the result of the calculation, and the driver Selecting a combination of the currently available first charging module array and the second charging module array in the controller according to the selected charging condition and controlling the relay through the relay controller, the selected first charging module array and the second charging module array through the controlled relay and charging the electric vehicle by receiving power from a combination of two charging module arrays. Through this configuration, a matrix-type electric vehicle charging device is provided that allows a plurality of users to select and combine power amounts by means of charging modules arranged to have a matrix structure.

However, all of these conventional technologies have a disadvantage in that simultaneous charging can be performed only when communication with an electric vehicle is possible.

In addition, the prior art as described above is a method in which a plurality of power modules that provide power are combined to supply charging power, and it is difficult to maintain the uniformity of each module, which causes a chattering phenomenon to cause instability in charging an electric vehicle. There are disadvantages that cause

In addition, the prior art is a 1:1 charging method between a charger and a vehicle, which has the disadvantage of increasing installation cost when expanding the charger, taking up a lot of electric vehicle charging space due to the separation of slow and rapid chargers, and low charging efficiency. The disadvantage is that it takes a lot of time to charge an electric vehicle.

In addition, the prior art has a disadvantage in that power loss occurs due to the use of a low-efficiency charger.

Korean Registered Patent No. 10-2198926 (registered on December 29, 2020) (charger output coupling system and load distribution method using the same) Republic of Korea Patent Publication 10-2017-0086749 (published on July 27, 2017) (electric vehicle charging control and charging management method) Republic of Korea Patent Publication No. 10-2018-0041965 (published on April 25, 2018) (vehicle charging device) Korean Registered Patent No. 10-1841078 (registered on March 16, 2018) (Matrix type electric vehicle charging device) Republic of Korea Patent No. 10-1858734 (registered on May 10, 2018) (Matrix type electric vehicle charging device and method)

Therefore, the present invention has been proposed to solve various problems occurring in the general electric vehicle charger and the prior art as described above, and efficiently charges and charges multiple electric vehicles simultaneously through different power distribution methods according to slow charging or fast charging. An object of the present invention is to provide an electric vehicle charging device that uses charging power distribution to shorten waiting time.

In order to achieve the above object, the first embodiment of the "electric vehicle charging device using charging power distribution" according to the present invention,

A main control unit that charges electric vehicles through slow charging, detects load charging states in real time with charging power supplied to a plurality of chargers, and simultaneously charges multiple electric vehicles through charging power distribution according to the detected load charging states in real time; and

It is characterized in that it includes a plurality of chargers for charging connected electric vehicles with charging power distributed under the control of the main control unit.

In the above, the main control unit,

a power input unit that receives charging power;

a power distribution unit for distributing charging power according to a load charging state;

a plurality of charging power supply units supplying charging power to a charger connected to the power distributed by the power distribution unit;

A plurality of loads that detect charging power supplied to each load from the plurality of charging power supply units with a current sensor to detect charging power consumption of the load, and provide the detected charging power consumption to the power distribution unit in a load charging state. It is characterized in that it includes a detection unit.

In the above, a plurality of load detection units are provided in a one-to-one correspondence with the plurality of charging power supply units, detect charging power of each charger, and provide the load charging state information to the power distribution unit.

In the above, the power distribution unit,

The maximum charging power is provided in the order of connection of the electric vehicles connected to the plurality of chargers, but the charging amount of the electric vehicle is determined based on the load charging state, and when the determined charging amount reaches the preset power distribution charging amount, power distribution is performed to simultaneously charge multiple electric vehicles. It is characterized by charging.

In order to achieve the above object, the second embodiment of the "electric vehicle charging device using charging power distribution" according to the present invention,

While charging electric vehicles through rapid charging, the charging amount of the electric vehicle is detected in real time through communication with the electric vehicle to be charged through multiple chargers, and the charging power is distributed according to the order of charging requests and the detected charging amount of the electric vehicle in real time to simultaneously charge multiple electric vehicles. a controller for charging; and

a power module for distributing and providing charging power supplied to a charger under the control of the control unit; and

It is characterized in that it includes a plurality of chargers for charging the connected electric vehicle with the charging power distributed from the power module.

In the above, the control unit,

A charger communication module that obtains charge amount information by communicating with an electric vehicle connected through the charger;

a charging order determination unit that checks the order of electric vehicles connected through the charger and determines the charging order of the electric vehicles;

a charge amount checking unit that checks the charge amount of the electric vehicle to be charged through the charger communication module;

a charging distribution ratio determining unit for determining a charging power distribution ratio according to the charging order and the amount of charge of the electric vehicle;

It is characterized in that it includes a charging control unit that controls charging of the electric vehicle in conjunction with the charging order determining unit, the charging amount checking unit, and the charging distribution ratio determining unit.

In the above, the charging control unit,

The charging amount of the electric vehicle is compared with the set charge amount, and if the charge amount of the electric vehicle is less than the set charge amount, power is distributed in the order of charging request to control charging. It is characterized by controlling.

According to the present invention, by determining the optimal power distribution according to the charging mode of the electric vehicle and charging the electric vehicle, the charging efficiency of the electric vehicle can be increased, and the charging waiting time of all electric vehicles can be minimized through simultaneous multiple charging.

1 is a configuration diagram of a first embodiment of an electric vehicle charging device using charging power distribution according to the present invention;
2 is a configuration diagram of an embodiment of the main control unit of FIG. 1;
3 is a block diagram of a second embodiment of an electric vehicle charging device using charging power distribution according to the present invention;
4 is a configuration diagram of an embodiment of a control unit of FIG. 3 .

Hereinafter, an electric vehicle charging device using charging power distribution according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

The terms or words used in the present invention described below should not be construed as being limited to a conventional or dictionary meaning, and the inventor may appropriately define the concept of the term in order to explain his/her invention in the best way. It should be interpreted as a meaning and concept consistent with the technical spirit of the present invention based on the principle that it can be.

Therefore, the embodiments described in this specification and the configurations shown in the drawings are only preferred embodiments of the present invention, and do not represent all of the technical spirit of the present invention, so various equivalents and equivalents that can replace them at the time of the present application It should be understood that variations may exist.

<Example 1>

1 is a configuration diagram of a first embodiment of an electric vehicle charging device using charging power distribution according to a preferred embodiment of the present invention, which may include a plurality of chargers 101 to 103 and a main control unit 200.

Here, the present invention describes a case in which three chargers are configured as an embodiment, but is not limited thereto, and this is only one embodiment. It will be apparent to those skilled in the art that even when there are more than three chargers, charging of the electric vehicle can be controlled using charging power distribution in the same manner.

The main control unit 200 charges the electric vehicles 11 to 13 through slow charging, detects the load charging state in real time with the charging power supplied to the plurality of chargers 101 to 103, and detects the load charging state in real time according to the detected load charging state. It serves to simultaneously charge a plurality of electric vehicles (11 to 13) through charging power distribution.

As shown in FIG. 2, the main control unit 200 includes a power input unit 201 that receives charging power, a power distribution unit 202 that distributes charging power according to the load charging state, and a power distribution unit distributed from the power distribution unit. First to third charging power supply units 203 to 205 supplying charging power to chargers 101 to 103 connected with power, and supplied to respective loads from the first to third charging power supply units 203 to 205 first to third load detection units 206 - 208 that detect the charging power used by the load with a current sensor to detect the charging power usage of the load, and provide the detected charging power usage to the power distribution unit 202 in a load charging state can include

The power distribution unit 202 provides the maximum charging power in the order of connection of the electric vehicles connected to the plurality of chargers 101 to 103, determines the amount of charge of the electric vehicles 11 to 13 in the load charging state, and determines the amount of charge When a preset power distribution charging amount is reached, power distribution is performed, so that a plurality of electric vehicles can be charged at the same time.

Here, the charging power supply and the load detection unit are coupled in a one-to-one correspondence, the first charging power supply 203 and the first load detection unit 206 are coupled in correspondence, and the second charging power supply 204 and the second load detection unit ( 207) is coupled correspondingly, and the third charging power supply unit 205 and the third load detection unit 208 are coupled correspondingly.

The first to third load detecting units 206 - 208 detect charging power of each charger and provide the load charging state information to the power distributing unit 202 .

The first to third chargers 101 to 103 serve to charge the connected electric vehicles 11 to 13 with charging power distributed under the control of the main controller 200.

The operation of the electric vehicle charging device using the charging power distribution according to the first preferred embodiment of the present invention configured as described above will be described in detail.

First, although not shown in the drawing, when charging power is supplied through a power receiving facility, which is a power supply facility that supplies charging power, the power converter converts the power supplied from the receiving facility into DC power by using the power supplied from the power receiving facility as a large-capacity single power converter. and supplies the converted power to the main control unit 200 according to the charging capacity of the electric vehicle.

The main control unit 200 charges the electric vehicles 11 to 13 through slow charging, detects the load charging state in real time with the charging power supplied to the plurality of chargers 101 to 103, and determines the load charging state detected in real time. Accordingly, charging efficiency is increased by simultaneously charging a plurality of electric vehicles (11 to 13) through charging power distribution.

That is, the power input unit 201 receives charging power, and the power distribution unit 202 distributes the charging power according to the charging state of the load.

For example, an initial charging power distribution method is as follows.

Assume that the supply power is up to 70A, and the first to third chargers (101 to 103) can charge up to 32A, respectively, and only two electric vehicles (eg, 11 and 12) are chargers (for example, 11 and 12) during initial charging. 101 and 102) are assumed to be connected.

In this case, since 32A, which is the maximum charging power, can be supplied to the two chargers 101 and 102, the power distribution unit 202 divides the input power into two 32A, and the first and second charging power supply units 203 , 204).

The first and second charging power supply units 203 and 204 supply the power distributed from the power distribution unit 202 to the connected chargers 101 and 102 as charging power.

Accordingly, the electric vehicles 11 and 12 connected to the first and second chargers 101 and 102 receive the maximum charging power (eg, 32A) and charge them.

As described above, when an electric vehicle is connected to the two chargers 101 and 102 and charged, the electric vehicle is charged using the power distribution method as described above. ), when the electric vehicle 13 connects to and requests charging, the power distribution unit 202 of the main control unit 200 supplies the remaining charging power (70A - 64A = 6A) to the third charger 103 to charge the electric vehicle Start charging at (13).

Thereafter, charging power supplied to each load (electric vehicle) is detected through the first to third load detectors 206 to 208 coupled to the first to third charging power supply units 203 to 205 in a one-to-one correspondence.

That is, the first to third load detectors 206 - 208 detect charging power supplied to each load (electric vehicle) using a conventional current sensor.

The current sensor uses a donut-shaped magnetic core to wind primary and secondary coils around the magnetic core to measure the secondary current, and a current transformer method that detects the primary current, and a Hall element in a magnetic field generated by the current. It is possible to use various known current sensors, such as a Hall element method that detects the strength of a magnetic field, that is, the strength and weakness of current, and a fuse method that has different melting times depending on the current.

As described above, the first to third load detectors 206 - 208 use the current sensor to detect the charging power consumption of the load, and provide the detected charging power consumption to the power distribution unit 202 in a load charging state. .

The power distribution unit 202 provides the maximum charging power in the order of connection of the electric vehicles connected to the plurality of chargers 101 to 103 initially, and when the load charging state is detected as described above, it is used to charge each electric vehicle 11 - 13) Determine the amount of charge.

Here, each electric vehicle is charged with the initial maximum charging power (32A), and when the charging amount increases to a certain extent, the charging power is lowered. This consequently means less current consumed by the load.

Therefore, the power distribution unit 202 lowers the charging power of the corresponding charger proportionally as much as the charging current consumed by the load decreases as charging is performed in the charger that supplies the maximum charging power, and the remaining charging current is relatively charged. It is supplied to a charger that is supplied in a small amount so that the electric vehicle connected to the charger is charged.

Previously, the last connected electric vehicle could not be supplied with adequate charging power until the two electric vehicles that were previously charged were fully charged, which took a lot of time to charge. However, in the fully charged charging mode according to the present invention, the charging power When the distribution method is applied, the charging time can be shortened because the optimal charging power can be supplied earlier through appropriate charging power distribution. As a result of this charging power distribution method, all electric vehicles can be charged in a short time, thereby increasing charging efficiency.

<Example 2>

3 is a block diagram of a second embodiment of an “electric vehicle charging device using charging power distribution” according to the present invention, including first to third chargers 301 to 303, a controller 400, and a power module 500 can do.

The control unit 400 charges the electric vehicles 21 - 23 through rapid charging, and detects the charging amount of the electric vehicles 21 - 23 in real time through communication with the electric vehicle to be charged through the first to third chargers 301 - 303 . It serves to simultaneously charge multiple electric vehicles (21 - 23) through charging power distribution according to the number of connected vehicles and the amount of electric vehicle charging detected in real time.

As shown in FIG. 4, the control unit 400 communicates with an electric vehicle connected through the first to third chargers 301 to 303 to obtain charging amount information, the charger communication module 401, and the first to third chargers 301 to 303. A charging order determination unit 403 that checks the order of the electric vehicles 21 to 23 connected through the third charger 301 to 303 and determines the charging order of the electric vehicles 21 to 23, and the charger communication module 401 ), a charge amount confirmation unit 404 that checks the charge amount of an electric vehicle to be charged, a charge distribution ratio determiner 405 that determines a charge distribution ratio according to the charging order and the charge amount of the electric vehicle, and the charge order determiner 403 ), and a charging control unit 402 that controls charging of the electric vehicle in conjunction with the charging amount checking unit 404 and the charging distribution ratio determining unit 405.

The charging control unit 402 compares the charge amount of the electric vehicles 21 - 23 with the set charge amount, and if the charge amount of the electric vehicles 21 - 23 is less than the set charge amount, distributes power in order of charging request to control charging, and the electric vehicle If the charging amount of (21 - 23) is greater than the set charging amount, charging can be controlled with a charging power distribution ratio determined according to the charging amount.

The power module 500 serves to distribute and provide charging power supplied to the first to third chargers 301 to 303 under the control of the control unit 400 . Such a power module 500 may include an AC/DC converter or the like.

The first to third chargers 301 to 303 serve to charge the connected electric vehicles 21 to 23 with the charging power distributed from the power module 500.

The operation of the second embodiment of the "electric vehicle charging device using charging power distribution" according to the present invention configured as described above will be described in detail.

First, although not shown in the drawing, when charging power is supplied through a power receiving facility, which is a power supply facility that supplies charging power, the power converter converts the power supplied from the receiving facility into DC power by using the power supplied from the power receiving facility as a large-capacity single power converter. and supplies the converted power to the power module 500 according to the charging capacity of the electric vehicle.

When the first to third chargers 301 to 303 are connected to the electric vehicles 21 to 23 to be charged and request charging, the information of the electric vehicle (for example, Battery charge amount information, etc.) is acquired and transmitted to the controller 400 .

The control unit 400 charges the electric vehicles 21 - 23 through rapid charging, and displays the charging amount of the electric vehicles 21 - 23 in real time through communication with the electric vehicle to be charged through the first to third chargers 301 - 303. and simultaneously charging multiple electric vehicles (21 to 23) through charging power distribution according to the order of charging requests and the amount of electric vehicle charge detected in real time.

For example, the controller 400 is connected to the first to third chargers 301 to 303 through the charger communication module 401 in a set communication method, communicates with the connected electric vehicle, obtains information on the amount of charge of the electric vehicle, and controls the charging control unit. forwarded to (402).

Subsequently, the charging order determining unit 403 determines the charging order of each charger using the charging request information acquired through the charger communication module 401, and transmits the determined charging order information to the charging control unit 402. .

For example, if the first charger 301 requested charging first, the second charger 302 requested charging second, and the third charger 303 requested charging third, charging The order is determined by the first charger 301, the second charger 302 and the third charger 303.

In addition, the charge amount check unit 404 obtains charge amount information of electric vehicles connected to each charger through the charger communication module 401, checks the charge amount of each electric vehicle through this, and transmits the charge amount information for each electric vehicle to the charging control unit 402. ) is forwarded to

In addition, the charging distribution ratio determining unit 405 determines the charging power distribution ratio according to the charging order determined by the charging order determining unit 403 and the charging amount of the electric vehicle checked in real time by the charging amount checking unit 404.

For example, with respect to three chargers, when a charging request is initially generated in only one charger (eg, 301), a charge distribution ratio is determined to supply maximum charging power to the corresponding charger 301.

Subsequently, when a charging request occurs in the second charger (eg, 302) during charging by supplying maximum charging power through the charger 301, the charger 301 is charged with 80% of the total charging power. The charging power is distributed to be supplied as electric power, and the charging power distribution ratio is determined so that 20% of the total charging power is supplied to the charger 302 as charging power.

In addition, the charging power is supplied by distributing charging power at a ratio of 80%: 20% through the first charger 301 and the second charger 302, and the third charger (eg, 303) also supplies charging power during charging. When a charging request occurs, charging power is distributed so that 70% of the total charging power is supplied to the first charger 301 as charging power, and 20% of the total charging power is supplied to the second charger 302 as charging power. Charging power is distributed to be supplied, and a charging power distribution ratio is determined so that 10% of the total charging power is supplied to the third charger 303 as charging power.

According to the charging power distribution ratio determined in this way, the charging control unit 402 controls the power module 500 to control charging of the corresponding electric vehicle. Through this charging power distribution ratio control, all connected electric vehicles are simultaneously charged.

Next, while charging the electric vehicles by distributing the charging power through the initial charging power distribution ratio as described above, the charging amount of each electric vehicle is continuously checked in real time. Rapid charging can communicate between the charger and the electric vehicle, providing charging information of the electric vehicle.

The charge amount checking unit 404 continuously checks the charge amounts of the first to third electric vehicles 21 - 23 in real time.

The charging control unit 402 checks the charging amount of each electric vehicle, and when the charging amount of a specific electric vehicle reaches a predetermined charging amount or more, provides the charging amount information of each electric vehicle to the charging distribution ratio determining unit 405 to determine the charging power ratio. to be distributed separately. Here, the charging amount above a certain amount is the criterion for determining the point in time for additionally distributing the charging power proportionally. Even if the additional charging power is distributed through the charging amount over a certain amount, the electric vehicle that starts charging first fully charges and simultaneously charges multiple electric vehicles. can be set to do so.

The charge distribution ratio determination unit 405 determines a charging power distribution ratio according to the charge quantity of the electric vehicle when a charge distribution ratio is requested through the charge control unit 402.

Here, when the charging amount of each electric vehicle increases to a certain extent, there is no significant obstacle in fully charging even if the charging power is lowered.

Therefore, the charge distribution ratio determination unit 405 checks the charge amount of each electric vehicle to be charged 21 - 23 provided through communication through the first to third chargers 301 - 303, and charges power based on the checked charge amount. Determine the distribution ratio.

For example, when the charging amount of the first electric vehicle exceeds a certain amount, the charging power of the first electric vehicle is lowered by a certain amount, and the charging power of the second electric vehicle connected secondly and the charging power of the third electric vehicle connected thirdly are relatively Determine the charging power distribution ratio so that Here, it is assumed that the charging power distribution ratio is previously stored as a power distribution table according to the charging amount of electric vehicles and the number of charging units.

Therefore, when the charging amount of a specific electric vehicle exceeds a preset charging amount, the charging distribution ratio determination unit 405 extracts the charging power distribution ratio of each charger from the power distribution table using the charging amount information of the specific electric vehicle and the number of electric vehicles charged. and transferred to the charging control unit 402. Here, the power distribution table may be set differently according to the amount of charge and the number of charged electric vehicles.

For example, when the amount of charge of the first electric vehicle is greater than or equal to a certain charge amount, the power distribution ratio is different when the number of charged electric vehicles is two or three.

The charge distribution ratio as described above may be updated based on a certain time or a certain amount of charge. That is, the charge distribution ratio may be adjusted in real time according to the amount of charge and the number of charged units, but in this case, the algorithm of the charge control unit 402 becomes complicated, and the load burden rate of the control unit increases according to frequent algorithm execution, so an expensive controller with high specifications must be used. comes with the burden of Therefore, the real-time charging distribution ratio as described above is possible, and the charging power distribution ratio based on a certain time period (eg, 5 minutes or 10 minutes) or the amount of charge of the electric vehicle (70%, 75%, 80%, etc.) can be updated.

The charging control unit 402 controls the power module 500 according to the charging power distribution ratio determined by the charging distribution ratio determining unit 405, and the power module 500 is controlled by the charging control unit 402, respectively. The charging power provided to the chargers is distributed according to the charging power distribution ratio and supplied to each charger. Here, it is assumed that the power module 500 includes a converter for power distribution, a power switching device, and the like.

Therefore, when the charging mode of an electric vehicle is fast charging, charging efficiency can be increased by optimally charging multiple electric vehicles simultaneously by appropriately combining the charging order, electric vehicle charging amount, and charging number as described above, thereby increasing the charging waiting time of electric vehicles. can be shortened.

Although the invention made by the present inventors has been specifically described according to the above embodiments, the present invention is not limited to the above embodiments, and it is common knowledge in the art that various changes can be made without departing from the gist of the present invention. It is self-evident to those who have

11 - 13, 21 - 23: EV
101 - 103, 301 - 303: first to third chargers
200: main control unit
201: power input unit
202: power distribution unit
203 - 205: first to third charging power supply units
205 - 208: first to third load detection units
400: control unit
401: charger communication module
402: charging control unit
403: charging order determining unit
404: charge amount confirmation unit
405: charge distribution ratio determining unit
500: power module

Claims (7)

A main control unit that charges electric vehicles through slow charging, detects load charging states in real time with charging power supplied to a plurality of chargers, and simultaneously charges multiple electric vehicles through charging power distribution according to the detected load charging states in real time; and
An electric vehicle charging device using charging power distribution, characterized in that it includes a plurality of chargers for charging the connected electric vehicles with the charging power distributed under the control of the main control unit.
In claim 1, the main control unit,
a power input unit that receives charging power;
a power distribution unit for distributing charging power according to a load charging state;
a plurality of charging power supply units supplying charging power to a charger connected to the power distributed by the power distribution unit; and
A plurality of loads that detect charging power supplied to each load from the plurality of charging power supply units with a current sensor to detect charging power consumption of the load, and provide the detected charging power consumption to the power distribution unit in a load charging state. An electric vehicle charging device using charging power distribution, characterized in that it comprises a detector.
The charging power of claim 2, wherein the plurality of load detection units are provided in a one-to-one correspondence with the plurality of charging power supply units, detect charging power of each charger, and provide the load charging state information to the power distribution unit. Electric vehicle charging device using distribution.
In claim 2, the power distribution unit,
The maximum charging power is provided in the order of connection of the electric vehicles connected to the plurality of chargers, but the charging amount of the electric vehicle is determined based on the load charging state, and when the determined charging amount reaches the preset power distribution charging amount, power distribution is performed to simultaneously charge multiple electric vehicles. An electric vehicle charging device using charging power distribution, characterized in that for charging.
While charging electric vehicles through rapid charging, the charging amount of the electric vehicle is detected in real time through communication with the electric vehicle to be charged through multiple chargers, and the charging power is distributed according to the order of charging requests and the detected charging amount of the electric vehicle in real time to simultaneously charge multiple electric vehicles. a controller for charging;
a power module for distributing and providing charging power supplied to a charger under the control of the control unit; and
An electric vehicle charging device using charging power distribution, characterized in that it comprises a plurality of chargers for charging the connected electric vehicle with the charging power distributed from the power module.
In claim 5, the control unit,
A charger communication module that obtains charge amount information by communicating with an electric vehicle connected through the charger;
a charging order determination unit that checks the order of electric vehicles connected through the charger and determines the charging order of the electric vehicles;
a charge amount checking unit that checks the charge amount of the electric vehicle to be charged through the charger communication module;
a charging distribution ratio determining unit for determining a charging power distribution ratio according to the charging order and the amount of charge of the electric vehicle; and
An electric vehicle charging device using charging power distribution, characterized in that it includes a charging control unit that controls charging of the electric vehicle in conjunction with the charging order determining unit, the charging amount checking unit, and the charging distribution ratio determining unit.
In claim 6, the charging control unit,
The charging amount of the electric vehicle is compared with the set charge amount, and if the charge amount of the electric vehicle is less than the set charge amount, power is distributed in the order of charging request to control charging. An electric vehicle charging device using charging power distribution, characterized in that for controlling.

Images