KR102032871B1 - Charging power distribution system for charger of electric vehicle and process of the same - Google Patents

Abstract

The present invention relates to a power distribution control system of an electric vehicle charger and a method thereof. According to the present invention, the power distribution control system of an electric vehicle charger comprises a plurality of chargers, a power distribution panel supplying power to the charger, an operation server approving the charging of the charger according to a request of a user, and a gateway communicating with the charger, the power distribution panel and the operation server, and distributes power supplied to each charger according to a priority of when the charging is required in the plurality of chargers. The gateway includes: a charging request detector which detects a charge request of the charger; a residual current detector which detects residual current that is not used for the charging; the average current extractor which extracts the average current flowing into the charger being charged; a current redistribution unit which recovers minimum chargeable current from the charger being charged and assigns the recovered current to the other charger requesting charging, when there is the charging request from the other charger; and a charging information display unit displaying charging information of the charger.

Description

Charging power distribution system for charger of electric vehicle and process of the same}

The present invention relates to a power distribution control system and method of an electric vehicle charger.

With the global environmental reinforcement and energy saving trend, the development and dissemination of eco-friendly electric vehicles is rapidly spreading in each country. To this end, small electric vehicle charging stations are installed and operated in parking lots and public parking facilities of multi-unit housing complexes, and the spread of electric vehicle charging systems that can be operated unmanned is also being activated. Unmanned electric vehicle charging system is provided with a system for controlling the charging process using a wired or wireless communication means, and a system for checking and checking the charging progress in real time.

1 is a schematic block diagram of an electric vehicle charging system according to the related art.

As shown, the charging of the electric vehicle is configured such that the charger 1 receives electric power from the system 2 to charge the electric vehicle 3. In general, since one charger 1 is configured to charge one electric vehicle 1, a plurality of chargers 1 are provided in one system 1 to charge a plurality of electric vehicles. However, in the charging system according to the related art, there is a limit to the power supplied from the system, and thus, there is a limit to installing a plurality of chargers, and eventually there is a limit to the number of electric vehicles that can be charged at the same time.

In addition, recently, an unmanned charging system in which a user charges an electric vehicle has become common. Electric vehicle unattended charging systems are difficult to use while the user directly operates the charger, and there are limitations in controlling the charging system to supply power to each charger under optimal conditions.

In addition, a charging system in a common facility in which a plurality of chargers are installed may be required to be charged in a plurality of chargers, and the charging request is made simultaneously or at predetermined time intervals. In this case, the conventional common charging system has a problem in that the power supplied to each charger requiring charging is uniformly distributed so that power distribution is not efficiently performed according to the charging priority.

Korean Patent Application Publication No. 10-2018-0046525 (2018.05.09.Published, electric vehicle charging device that provides wired and wireless charging means for a plurality of electric vehicles at the same time) Korea Patent Registration 10-1813523 (2017.12.22.Registered, charging power distribution system for electric vehicles in common facilities)

The present invention has been proposed to solve the above problems, in a charging system of a common facility in which a plurality of chargers are installed, by distributing power according to the priority of the charging request to each charger to be charged, It is an object of the present invention to provide a power distribution control system of an electric vehicle charger that allows efficient charging to a user.

Power distribution control system of the electric vehicle charger of the present invention for achieving the above object, a plurality of chargers, power distribution panel for supplying power to the charger, and the operation of approving the charging of the charger at the request of the user A plurality of chargers, including a server and a gateway in communication with the charger, the power distribution panel, and the operational server, configured to distribute power supplied to each charger according to priority when charging is required. Charge request detector to detect the charge request of the battery, Residual current detector to detect the residual current not used for charging, Average current extractor to extract the average current flowing into the charging charger, If there is a charge request from another charger The other charge requesting charging by recovering the minimum charge current from the charging charger. A current redistribution unit for allocating electricity, and a charging information display unit for displaying charging information of the charger.

Here, the current redistribution unit is characterized in that it comprises a current recovery unit for recovering the current from the charging charger, and a current allocation unit for allocating the recovered current to the other charger is requested to charge.

In addition, the current redistribution unit, characterized in that configured to recover the current within the range to guarantee any charging current for the charger being charged at the highest priority.

In addition, the current redistribution unit is configured to recover the current within a range that guarantees 50% of the maximum current available in the system current or 50% of the maximum current charged to the electric vehicle for the charger charging the highest priority. It features.

The current redistributing unit may be configured to recover the remaining current and allocate the remaining current to the other charger to be charged when the average current extracted by the average current extracting unit is smaller than the current allocated to the corresponding charger.

In addition, the charging information display unit, the state in which the charger can start charging at the maximum chargeable current, the state in which charging can start at any current between the minimum chargeable current and the maximum chargeable current, and enter the charging standby. Characterized in that it is configured to display the charging information.

And the power distribution control method of the electric vehicle charger of the present invention for achieving the above object, a plurality of chargers, power distribution panel for supplying power to the charger, and to approve the charging of the charger at the request of the user A charge request of the charger, wherein the charger is configured to distribute power supplied to each charger according to priority when charging is required in a plurality of chargers, including an operation server, the charger, the power distribution panel, and a gateway communicating with the operation server. A charge request detector for detecting a current, a residual current detector for detecting a residual current not used for charging, an average current extractor for extracting an average current flowing into a charger being charged, and a minimum current for charging an electric vehicle. Current redistribution unit that recovers from the charging charger and assigns it to another charger It is made by a gateway including a charging information display unit for displaying, and when the charge request to the charger other than the charging charger, recovering the minimum charge current from the charger being charged and assigning to the other charger It features.

Here, the recovery of the current for the charger being charged is characterized in that it is sequentially made from the recoverable subordinated charger to the senior charger within the range to ensure the minimum chargeable current.

In addition, the recovery of the current for the charger being charged is characterized by recovering the current within a range that guarantees any charging current for the charger being charged with the highest priority.

In addition, the recovery of the current for the charger being charged is characterized in that the residual current of the charger is preferentially recovered when there is a charger whose average current flowing in is smaller than the allocated current.

According to the present invention, in a charging system of a common facility in which a plurality of chargers are installed, charging power distribution is efficient by guaranteeing charging power of any size in the charger of the highest priority and the minimum charging power that can be charged in the charger of the lower priority. Can be made.

1 is a block diagram showing a schematic structure of an electric vehicle charging system according to the prior art,
2 is a block diagram showing an electric vehicle charging system according to an embodiment of the present invention;
3 is a block diagram showing a charger installation structure of an electric vehicle charging system according to an embodiment of the present invention;
4 is a block diagram showing a charger installation structure of an electric vehicle charging system according to another embodiment of the present invention;
5 is a block diagram showing a main configuration of a gateway according to an embodiment of the present invention;
6 is a view showing a power distribution process of the electric vehicle charger according to an embodiment of the present invention,
7 is a view showing a power distribution process of the electric vehicle charger according to another embodiment of the present invention.

The technical problem achieved by the present invention and the practice of the present invention will be apparent from the preferred embodiments described below. Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Differences in the present embodiment, which will be described later, should be understood to be mutually exclusive. That is, without departing from the spirit and scope of the present invention, the specific shapes, structures, and characteristics described may be implemented in other embodiments with respect to one embodiment, and the location of individual components within each disclosed embodiment. Or, it is to be understood that arrangements may be changed, and like reference numerals in the drawings refer to the same or similar functions throughout the several aspects, and the length, area and thickness, etc. may be exaggerated for convenience. In the description of the present embodiment, expressions such as 1, 2, before, after, and the like indicate relative order, position, direction, etc. relative to each other, and the technical meaning is not necessarily limited to the dictionary meaning.

2 is a block diagram showing an electric vehicle charging system according to an embodiment of the present invention, Figure 3 is a block diagram showing a charger installation structure of the electric vehicle charging system according to an embodiment of the present invention, Figure 4 is As a block diagram showing a charger installation structure of an electric vehicle charging system according to another embodiment, a single phase of a structure in which a charger and an outlet are mixed.

2 and 3, the electric vehicle charging system of the present embodiment is a charger 100 installed in a parking lot of a multi-unit housing complex, a public parking lot or a parking lot of a general building, and separates three-phase system power into a single phase to the charger. The power distribution panel 200 for supplying power and supplying power consumed for actual charging in the charger, and an operation in which an electric vehicle is connected to the charger 100 and a charging is performed according to a set current amount when a user requests a charging. Charging information being charged by the charger 100 in communication with the server 300, the charger 100, the power distribution panel 200, and the operation server 300, and power supply information supplied to the plurality of chargers in the power distribution panel 200. Receives the transmission to the operation server 300, and receives the control information of the charger and the switch from the operation server 300 to the charger 100 and the power distribution panel 200 And a gateway 400 that provides. In particular, the gateway 400 of the present embodiment distributes the power supplied from the system to control the charger 100 and the power distribution panel 200 to be efficiently supplied to each charger 100 that is being charged.

As shown in FIG. 3, a plurality of chargers 100 according to the present exemplary embodiment are installed in power lines L1, L2, and L3 of each phase separated into single phases by the power distribution panel 200. For example, the power lines L1 of R phases are provided. 10 chargers, 10 chargers in the power line L2 on S and 10 chargers may be installed in the power line L3 on T, respectively. The charger 100 is supplied with the same or different powers to be distributed under the control of the gateway 400.

In addition, the charger 100 is configured to provide the supply current information supplied to the electric vehicle for charging to the operation server 300 through the gateway 400, for this purpose, the charger 100 is provided with a current sensor and communication means The communication means may be configured as a Zigbee communication module.

The power distributor 200 separates the power supplied to the three phases into R phases, S phases, and T phases, and senses the current supplied through the power lines of each phase. The power distribution panel 200 includes a three-phase switch 210 that opens and closes while separating the three-phase power line L of the system into single-phase power lines L1, L2, and L3, and each charger connected to each single-phase power line. It may include a single-phase switch 220 to open and close to supply power.

The three-phase switch 210 and the single-phase switch 220 is on and off according to the command transmitted from the operation server 300 to open and close the power supplied to each power line. In addition, the three-phase switch 210 separates the power supplied to the three phases in the system into three single phases of R phase, S phase and T phase so that power is supplied to each.

Meanwhile, referring to FIG. 4, the outlet 100 ′ is connected to the line of each phase together with the charger 100. An electric vehicle is directly connected to the charger 100 to be charged, and an electric vehicle is connected to the outlet 100 ′ via a portable charging device to perform charging. One or more outlets 100 'may be mixed along the power lines of each phase. For example, as shown in FIG. 4, a power system connected to eight chargers 100 and two outlets 100' is connected to an R line. Can be configured.

5 is a block diagram showing a main configuration of a gateway according to an embodiment of the present invention.

The gateway 400 according to the present embodiment has a charge request detector 410 for detecting a charge request from the charger 100 and a residual for detecting information of a current remaining after being supplied to the charger 100 and the outlet 100 '. The current sensing unit 420, the average current extraction unit 430 for extracting the average current of the current supplied to the charger 100 and the outlet 100 ', and recovers the current from the charger 100 to another charger A redistribution current redistribution unit 440, a charging information display unit 450 displaying charging information of the charger 100, a communication unit for communicating with the charger 100, the power distribution panel 200, and the operation server 300 ( 460, and a control unit 470 for controlling their driving.

The gateway 400 having the above configuration exchanges information with the charger 100 and the operation server 300, and a current is supplied to each charger 100 based on the power supplied from the system and the charge request information of the charger 100. The power distribution panel 200 is controlled to be efficiently supplied.

In detail, the charge request detector 410 is configured to detect whether the electric vehicle is connected to a connector (not shown) of the plurality of chargers 100, and when the electric vehicle is connected to the charger 100, the gateway 400 notifies the operation server 300 through the communication unit 460 that there is a charge request to the charger 100.

The residual current detection unit 420 is configured to sense a current that can be supplied to another charger 100 because it is not used for charging. The residual current detection unit 420 detects a current amount excluding the current that is already supplied to the charger 100 with respect to the total current supplied from the system. Detect. The residual current information detected by the residual current detector 420 is used as information for determining whether the other charger 100 can be charged by the charging information display unit 450.

The average current extracting unit 430 is configured to extract the average current being supplied for charging to the charger 100 currently being charged. When the average current extracted by the average current extractor 430 is smaller than the current allocated to the charger, the current redistributor 440 recovers a current corresponding to the difference. The average current extracting unit 430 of the present embodiment is configured to extract the average current every 5 minutes, and extracts the average current flowing into the charger for 4 minutes before that.

The current redistribution unit 440 recovers the current supplied to the specific charger 100 and assigns the current to the other charger 100, and includes a current recovery unit 441 and a current allocation unit 442. The current recovery unit 441 is configured to recover a certain amount of current from the charger 100 being charged. The current recovery unit 441 recovers a current corresponding to the difference when there is a spare current recoverable with respect to the charger 100 in progress or the average current of the charging current is lower than the initially distributed current. The current allocation unit 442 is configured to allocate the current recovered by the current recovery unit 441 to the other charger 100. The current allocating unit 442 allocates the current recovered from the charger 100 on one side to the other charger 100 or the charger 100 that is waiting to charge the maximum current.

In general, as the charging of an electric vehicle approaches the buffer over time, the current flowing for charging decreases gradually. Therefore, the average current extractor 430 and the current redistributor 440 recover currents that are not used for charging with respect to the initially distributed current and allocate them to other chargers, thereby enabling efficient distribution and use of power.

The charging information display unit 450 is configured to display charging information for the charger 100. The charging information display unit 450 displays information including chargeable information of the charger 100. To this end, the charger 100 may include an LED module as a display module for displaying information. For example, the charging information display unit 450 displays the state in which the charger 100 can immediately start charging at the highest current 32A or the state of charging with the green light of the LED module, and the charger can charge the battery at 6A to 32A. The status that can be started is displayed in yellow, and the status that can not be started immediately but can enter the standby mode is displayed in red, and the app is used when the charger is requested to be charged, which is red. After the payment is made, the charging cable is connected, and the status of waiting for the charging to start is displayed in blue light.

The communication unit 460 is a communication means for transmitting and receiving information with the charger 100, the power distribution panel 200 and the operation server 300, the Zigbee module is used as a communication means between the charger 100 and the power distribution panel 200. The TCP / IP module may be used as a communication means between the operation server 300.

The controller 470 controls the driving of the charge request detector 410, the residual current detector 420, the average current extractor 430, the current redistributor 440, and the charge information display unit 450. 100), the communication unit 460 is controlled to transmit various information with the power distribution panel 200 and the operation server 300.

Hereinafter, the power distribution process performed in the electric vehicle charging system having the above configuration will be described in detail through embodiments.

Example  One

FIG. 6 is a diagram illustrating a power distribution process of an electric vehicle charger according to an exemplary embodiment of the present invention, and illustrates a process in which current is distributed to each charger on R to which ten chargers are connected. In the description of the present embodiment, the expressions 1, 2 and the like are given in order according to the order in which charge is requested.

In the present embodiment, a system in which a total of 40A is supplied to R from the system is taken as an example, and the current of 40A is a magnitude of current that is generally supplied to a single-phase power line for electric vehicle charging in Korea. In addition, in order to distribute the current stably to each charger, since the distribution is generally within 90% of the total current, 36A is regarded as the total usable current (T). In addition, in the domestic electric vehicle, since the optimum current for charging is set to 32 A, the maximum current M supplied from the electric vehicle is set to 32 A in one charger. In addition, since most electric vehicles are set to a minimum charge current (m) of 6A, the minimum current (m) supplied to the electric vehicle from one charger is set to 6A. Thus, the power distribution control system of this embodiment is configured to distribute the current in 1 A units in the range of 6 A to 32 A to one charger.

Specifically, referring to the embodiment of FIG. 6, first, when there is a charge request from the user in the first charger 100-1, the gateway 400 notifies the operation server 300 of the user charge request information. In this case, the charge request from the user is detected by the charge request detector 410. In addition, when the operation server 300 receives the charge request information through the gateway 400 and at the same time receives the charge request information directly from the user via a user terminal, for example, a smart phone, the payment request is made to the smart phone when the payment is made The gateway 400 approves use of the first charger 100-1.

When the gateway 400 receives the use approval of the first charger 100-1 from the operation server 300, the gateway 400 allocates the maximum current M that can be charged to the first charger 100-1, for example, 32 A. To charge. At this time, the residual current detector 420 will detect the remaining 4A residual current. In addition, since the number of currents of more than 6A can be recovered from the first charger 100-1, the charging information display unit 450 displays yellow lighting, which is a state capable of starting charging with a current of 6A or more for the remaining chargers.

And when there is a charge request from the second charger 100-2, the gateway 400 receives the charging approval information of the second charger 100-2 from the operation server 300, and the second charger 100-2. Assign 6A to) to allow charging. At this time, since 6A, the minimum chargeable current, should be allocated to the second charger 100-2, a current of 2A is recovered from the first charger 100-1 in addition to the residual current 4A. The recovery and allocation of the current is performed by the current recovery unit 441 and the current allocation unit 442 of the current redistribution unit 440. Therefore, in the process, a current of 30 A is allocated to the first charger 100-1 and a current of 6 A is assigned to the second charger 100-2 to perform charging.

In addition, when there is a charge request from the third charger 100-3, the gateway 400 receives the charging approval information of the third charger 100-3 from the operation server 300, and the first charger 100-. The current of 6A is recovered from 1) and allocated to the third charger 100-3. Therefore, in the process, a current of 24 A is allocated to the first charger 100-1, and a current of 6 A is allocated to the second charger 100-2 and the third charger 100-3, respectively, to perform charging.

Subsequently, when there is a charge request from the fourth charger 100-4, the gateway 400 receives the charging approval information of the fourth charger 100-4 from the operation server 300, and the first charger 100-. The current of 6A is recovered from 1) and allocated to the number 4 charger 100-3. Therefore, in this process, a current of 18A is allocated to the first charger 100-1, and 6A to the second charger 100-2, the third charger 100-3, and the fourth charger 100-4, respectively. The current is assigned and charging takes place.

On the other hand, the current recovery unit 441 is configured to recover the current from the number 1 charger 100-1 in a range in which the current allocated to the number 1 charger being charged at the priority does not become 18 A or less. This ensures 50% of the maximum current 36A available to the highest priority user, thereby distributing current evenly and efficiently according to the priority of the charge request. The current guaranteed to the highest priority user is then set to any range (e.g. 18A as 50% range) based on the maximum available current 36A or any range based on the maximum current 32A charged to the electric vehicle. (E.g., 16 A as 50% range).

Therefore, in a state where four chargers are being charged, a current of 18 A is allocated to the first charger 100-1, and the minimum current that can be charged by the second to fourth chargers 100-2, 100-3, and 100-4 is determined. Since 6A of current is allocated, there is no longer a charger that can recover the current. Therefore, the charging information display unit 450 displays the red light of the state in which charging cannot be started immediately with respect to the remaining chargers.

In addition, when the charging of the first charger 100-1 is terminated, the gateway 400 notifies the operation server 300 of the charging end information and receives a charge end approval for the first charger 100-1. , 18A current is recovered from the first charger 100-1. At the same time, the gateway 400 allocates the recovered 18A of current to the second charger 100-2, which is a charge request priority. Therefore, in the process, a current of 24 A is allocated to the second charger 100-2, and a current of 6 A is allocated to the third charger 100-3 and the fourth charger 100-4, respectively. At this time, since the number 2 of the charger 100-2 is capable of recovering the current of 6A, the charging information display unit 450 displays the yellow light that is a state capable of starting charging with the current of 6A or more for the remaining chargers.

Furthermore, when the charging of the second charger 100-2 is terminated, the gateway 400 notifies the operation server 300 of the charging end information and receives the end of charge approval for the second charger 100-1. , To recover the current of 24A from the second charger (100-2). At the same time, the gateway 400 allocates the recovered current of 24A to the third charger 100-3 which is the priority. Therefore, in the process, a current of 30 A is assigned to the third charger 100-3 and a current of 6 A is assigned to the fourth charger 100-4 to perform charging. At this time, since the number 3 of the charger 100-3 is capable of recovering the current of 6A, the charging information display unit 450 displays the yellow light which is a state capable of starting charging with the current of 6A or more for the remaining chargers.

In addition, when the charging of the third charger 100-3 is terminated, the gateway 400 notifies the operation server 300 of the charging end information and receives a charge end approval for the third charger 100-1. , Recovers the current of 30A from the third charger (100-3). At the same time, the gateway 400 allocates 26 A of the recovered 30 A of current to the fourth charger. Therefore, in the process, a current of 32 A is assigned to only the number 4 charger 100-4 to perform charging. At this time, the residual current detection unit detects the residual current of 4A, and the charging information display unit 450 displays a yellow light that is a state that can start charging with a current of more than 6A for the remaining chargers.

As such, the gateway 400 appropriately distributes the amount of power supplied to each charger, so that efficient and stable charging is performed according to the charge request priority.

Meanwhile, the average current extracting unit 430 during charging extracts the average current flowing into each charger while charging in 5 minute increments, and when a current lower than the allocated current flows in, the current redistributing unit 440 differs from the difference. The corresponding residual current is retrieved and allocated to another charger of the senior rank.

In the present exemplary embodiment, a charging system in which a current of 40 A is supplied from a system is illustrated, but a current distribution method of the same process may be applied to a charging system in which 80 A or other system current is supplied. In a charging system with an 80A grid current, the available current will be set to 72A, 90%, charging at 32A, the maximum current in chargers 1 and 2, and 8A, the remaining current in the third charger. Charging can be done simultaneously. At this time, when there is a charge request from the fourth charger, 2A is recovered from the third charger, which is a lower priority, and 4A is recovered from the second charger and assigned to the fourth charger. That is, the recovery of the current is made sequentially from the recoverable subordinate charger to the priorities charger in a range that guarantees a minimum chargeable current of 6A.

Example  2

FIG. 7 is a diagram illustrating a power distribution process of an electric vehicle charger according to another embodiment of the present invention, in which a current is distributed to each charger and an outlet on R connected by mixing nine chargers and one outlet.

Specifically, referring to the embodiment of FIG. 7, first, when there is a charge request from a user in the first charger 100-1, the gateway 400 notifies the operation server 300 of user charge request information. In this case, the charge request from the user is detected by the charge request detector 410. In addition, the operation server 300 may receive the charge request information through the gateway 400 and at the same time can receive the charge request information directly from the user via a user terminal, for example, a smart phone, and the payment is requested by the smart phone If so, the gateway 400 approves the use of the number 1 charger 100-1.

When the charging request is made at the second outlet 100'-2, the gateway 400 recovers 12A from the first charger 100-1, and supplies 16A current with the remaining current 4A to the second outlet 100 '. -2). The average current extractor 430 extracts the average current consumed by the second outlet 100'-2 by monitoring the second outlet 100'-2 in real time.

In general, the domestic outlet is basically set to be supplied with a current of 16A, the portable charging device for electric vehicles is set to charge most of the current of 10A. Therefore, the outlet is assigned a current of 16A by default, but 10A current is consumed during actual charging.

Since it is confirmed that the average current of 10A is introduced from the second outlet 100'-2 through the average current extractor 430, the gateway 400 receives a current of 6A from the second outlet 100'-2. Recover and assign it again to the charger 100-1. Therefore, in this process, a current of 26 A is allocated to the first charger 100-1, and a current of 10 A is allocated to the second outlet 100 ′-2 to perform charging. At this time, since the number 1A of the charger 100-1 can recover the current of 6A or more, the charging information display unit 450 displays the charging information of the yellow lighting that can start charging with the current of 6A or more for the remaining chargers. do.

In addition, when there is a charge request from the third charger 100-3, the gateway 400 receives the charging approval information of the third charger 100-3 from the operation server 300, and the first charger 100-. The current of 6A is recovered from 1) and allocated to the third charger 100-3. Although the second outlet 100'-2 is a subordinated charge request after the first charger 100-1, the personal portable charging device does not have a communication means and a fixed current flows in, so the current is not recovered from the outlet. Therefore, in this process, a current of 20 A is allocated to the first charger 100-1, a current of 10 A is allocated to the second outlet 100'-2, and a current of 6 A is assigned to the third charger 100-3. Is assigned and charging takes place. In this case, since the current recoverable from the first charger 100-1 is 2A, the charging information display unit 450 displays charging information of red lighting in a state in which charging cannot be started immediately with respect to the remaining chargers.

When the charging of the first charger 100-1 is terminated, the gateway 400 notifies the operation server 300 of the charging end information, and recovers the current of 20A allocated from the first charger 100-1. . At the same time, the gateway 400 allocates the recovered 20A of current to the third charger 100-3. Therefore, in the process, a current of 10 A is allocated to the second outlet 100'-2, and a current of 26 A is assigned to the third charger 100-3 to perform charging. At this time, since the number 3 of the charger 100-3 can recover the current of 6A or more, the charging information display unit 450 displays yellow lighting, which is a state capable of starting charging with the current of 6A or more for the remaining chargers.

In addition, when a charge request is made by the fourth charger 100-4, 6A is recovered from the third charger 100-3 and assigned to the fourth charger 100-4. Therefore, in this process, a current of 10 A is allocated to the second outlet 100'-2, a current of 20 A is assigned to the third charger 100-3, and a current of the fourth charger 100-4 is allocated. And charging takes place. At this time, since the number 3 of the charger 100-3 can recover the current of 6A or more, the charging information display unit 450 displays yellow lighting, which is a state capable of starting charging with the current of 6A or more for the remaining chargers.

In addition, when charging is terminated at the second outlet 100'-2, the gateway 400 recovers a current of 10 A from the second outlet 100'-2 and allocates it to the third charger 100-3. . Therefore, in the process, a current of 30 A is assigned to the third charger 100-3 and a current of 6 A is assigned to the fourth charger 100-4 to perform charging.

Similarly, when the charger 100-5 has a charge request, power is distributed and charged by a process of recovering and allocating a current of 6A from the charger 100-3.

While the exemplary embodiments of the invention have been illustrated and described as described above, various modifications and other embodiments may be made by those skilled in the art. Such modifications and other embodiments will be considered and included in the appended claims without departing from the true spirit and scope of the invention.

100: charger
200: power distribution board
300: production server
400: gateway
410: charge request detector 420: residual current detector
430: average current extraction unit 440: current redistribution
441: current recovery unit 442: current allocation unit
450: charging information display unit 460: communication unit
470: control unit

Claims (10)

A plurality of chargers, a power distribution board for supplying power to the charger, an operation server for approving the charging of the charger at the request of a user, and a plurality of gateways for communicating with the charger, the power distribution panel, and the operation server Is configured to distribute the power supplied to each charger according to priority when charging is required in the charger of the gateway;
A charge request detector for detecting a charge request of the charger;
Residual current detection unit for detecting the residual current not used for charging;
An average current extracting unit extracting an average current flowing into the charger while being charged;
A current redistribution unit including a current recovery unit for recovering current from the charger being charged and a current allocation unit for allocating the recovered current to another charger requested to be charged; And,
Includes; charging information display unit for displaying the charging information of the charger,
The current redistribution unit,
When a charge request is made by a subordinated charger, a partial current is recovered from the charger being charged in addition to the residual current detected by the residual current detector, and a minimum rechargeable current is allocated to the subordinated charger.
If there is a charger whose average current extracted by the average current extraction unit is smaller than the current allocated to the charger, the remaining current is first recovered from the charger.
The power distribution control system of the electric vehicle charger, characterized in that for the charger charging at the highest priority, it is configured to recover the current within the range to guarantee any charging current. delete delete The method of claim 1, wherein the current redistribution unit,
The electric vehicle charger is configured to recover the current within a range that guarantees 50% of the maximum current available in the grid current or 50% of the maximum current charged in the electric vehicle for the charger charging with the highest priority. Power distribution control system. delete The method of claim 1, wherein the charging information display unit,
The charging information is divided into a state in which the charger can start charging with the maximum charge current, a state in which charging can start with an arbitrary current between the minimum charge current and the maximum charge current, and a state in which the charging standby can be entered. Power distribution control system of an electric vehicle charger, characterized in that it is configured to display. A plurality of chargers, a power distribution board for supplying power to the charger, an operation server for approving the charging of the charger at the request of a user, and a plurality of gateways for communicating with the charger, the power distribution panel, and the operation server Is configured to distribute the power supplied to each charger according to priority when charging is required in the charger of,
Charging request detection unit for detecting the charge request of the charger, residual current detection unit for detecting the residual current not used for charging, average current extraction unit for extracting the average current flowing into the charging charger, and charging the electric vehicle It is made in the gateway including a current redistribution unit for recovering the minimum possible current from the charging charger and assigning it to another charger, and a charging information display unit for displaying the charging information of the charger,
And recovering some current from the charging charger in addition to the residual current when the charger other than the charging charger is charged, and allocating a minimum charge current to the other charger.
If there is a charger whose average current extracted by the average current extraction unit is smaller than the current allocated to the charger, the remaining current is first recovered from the charger.
The power distribution control method of the electric vehicle charger, characterized in that for the charger charging at the highest priority, the current recovery within the range to guarantee any charging current. The method of claim 7, wherein
The method of controlling power distribution of an electric vehicle charger, characterized in that the recovery of the current for the charging charger is sequentially performed from the recoverable subordinated charger to the priority charger within a range that guarantees the minimum chargeable current. delete delete

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