KR102557975B1 - Charging control system and method for electric vehicle - Google Patents

Abstract

The present invention relates to an electric bus charging control system for efficiently distributing power to a plurality of electric buses requiring charging so that charging is performed. In an electric bus charging control system in which power is supplied by a method, one or more unit power units are grouped into a plurality of allocated power groups, and the power groups are grouped by a pair of left and right output channels through a pair of left and right output channels, respectively. A power supply module that is connected to the dispenser and provides a predetermined amount of power, so that power supplied from the power group on one side to the dispenser matched to the power group can also be supplied to the dispenser matched to the power group on the other side The power supply module includes a power control module for controlling power supply, and a switching module including a plurality of switching elements installed on the output channel to turn on or off the output channel according to a control signal of the power control module. It is configured so that the power provided from is distributed to the required capacity and provided to each dispenser.

Description

Electric bus charging control system {Charging control system and method for electric vehicle}

The present invention relates to an electric vehicle charging system, and more particularly, to an electric bus charging control system for efficiently distributing electric power to a plurality of electric buses requiring charging so that charging is performed.

Vehicles using fossil fuels such as gasoline and diesel are causing problems of depletion of fossil fuels and global warming, and as a result, regulations on carbon dioxide and exhaust gases are being strengthened for environmental protection. As an alternative to this, the supply of electric vehicles is gradually expanding, but the distance that can be operated on a single charge is not yet sufficient and the establishment of charging infrastructure is slow, acting as an obstacle to the spread of electric vehicles.

In particular, since an electric bus running on a certain route can sufficiently run the route with a single charge, the limitation of the distance that can be traveled on a single charge is relatively not a problem, and a charging system can be provided in a garage where buses are gathered. Building a charging infrastructure is also relatively easy.

However, electric buses operate according to a predetermined schedule, but each bus has a different operating time and route, so there may be electric buses that do not satisfy the operating schedule when charging is performed under the same conditions or with supplied power. In addition, there is a difference in charging speed even if the same power is supplied according to the degree of deterioration of the vehicle.

In general, charging of an electric vehicle is performed in a simultaneous charging method in which electric power of a certain capacity is distributed to a plurality of electric vehicles connected to a charger and charged simultaneously, and in sequential charging in which power is supplied sequentially according to the order in which they are connected and sequentially charged. method is applied. Therefore, when providing a charging service for an electric bus, it is necessary to efficiently distribute and supply charging power in consideration of an operation schedule or SOC information, while simultaneously or sequentially charging is provided in parallel.

Korean Patent Publication No. 10-2022-0101351 (2022.07.19. Publication of application) Korean Registered Patent No. 10-2032871 (registered on October 10, 2019)

An object of the present invention is to provide an electric bus charging control system capable of simultaneously and sequentially charging a plurality of electric buses by supplying charging power from a single power bank through a plurality of dispensers.

In addition, an object of the present invention is to provide an electric bus charging control system capable of efficiently charging by distributing and supplying electric power to each electric bus according to vehicle SOC information.

In addition, an object of the present invention is to provide an electric bus charging control system capable of simultaneous, sequential and emergency charging by preferentially supplying charging power to an electric bus requesting emergency charging.

In addition, an object of the present invention is to provide an electric bus charging control system that is easy to construct and manage without separately implementing a local control system for directly controlling a charger on site.

In addition, an object of the present invention is to provide an electric bus charging control system that is easy to install and can reduce construction costs by minimizing the number of switching elements for power distribution.

In the present embodiment to solve the above problems, in an electric bus charging control system in which a plurality of dispensers are connected to a power bank and power is supplied in a 1: N method, a plurality of power groups to which one or more unit power units are allocated Grouped into, and the power group is connected to each dispenser through a pair of left and right output channels in a group unit to provide a predetermined capacity of power, a power supply module from the power group on one side to the corresponding power group A power control module that controls power supply so that the power provided to the matched dispenser can also be provided to the dispenser matched to the power group on the other side, and a plurality of switching elements installed on the output channel. A switching module for turning on/off the output channel according to a control signal of the control module is included, so that the power supplied from the power supply module is distributed to a required capacity and provided to each dispenser.

In addition, among the plurality of dispensers, one dispenser may be set as a master dispenser, and the master dispenser may be controlled to perform a filling operation for each dispense.

In addition, the power control module includes an SOC information collection unit for collecting SOC information of the vehicle, a user request information collection unit for collecting user request information, and switching information of the switching elements based on the SOC information and the user request information. It may include a switching information generation unit to generate, and a switching control unit to control switching of the switching elements based on the generated switching information.

In addition, the power control module further includes an output current control unit that controls the power supply module so that the current supplied to the vehicle through the dispenser is lowered to a reference current or less based on the generated switching information, and the switching The control unit may control a switching operation to be performed in the switching module after a current equal to or less than the reference current is supplied by the output current control unit.

Also, the plurality of power groups may include one or more power groups supplying power of different capacities.

In addition, the power group is matched 1: 1 with the dispenser, and the switching module selects a switching element installed in each output channel connecting each power group and a dispenser matched to the corresponding power group, and a plurality of output channels It may include a switching element for connecting any one master output channel and the remaining output channels, and a switching element for connecting the master output channels of the left and right power groups.

In addition, the power group includes an auxiliary power group that is matched 1: 1 with the dispenser and does not match the dispenser, and the switching module connects each power group to the dispenser matched to the corresponding power group. Each output It may include a switching element installed in a channel, a switching element installed in an output channel connecting the left and right auxiliary power groups, and a switching element connecting the output channel of the auxiliary power group and the remaining output channels.

The present invention has an effect of enabling simultaneous, sequential, and emergency charging of a plurality of electric buses by supplying charging power through a plurality of dispensers.

In addition, the present invention distributes and supplies charging power based on SOC information of an electric bus requesting charging or user request information, so that efficient charging can be achieved.

In addition, the present invention is configured to collect filling information of each dispenser through a master dispenser and control a filling operation, thereby simplifying construction and management of the filling system.

In addition, the present invention has an effect of supplying power of various capacities by grouping a plurality of unit power units to have a predetermined capacity and supplying power.

1 is a block diagram showing the overall configuration of an electric bus charging control system of this embodiment;
2 is a block diagram showing the main configuration of a power control module, which is a main part of the electric bus charging control system of this embodiment;
3 is a block diagram showing an example of power distribution made in the electric bus charging control system of the present embodiment;
4 is a block diagram showing another example of power distribution in the electric bus charging control system of the present embodiment;

The technical problems achieved by the present invention and its practice will be clarified by the preferred embodiments described below. Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

It should be understood that the differences in the present embodiment, which will be described later, are not mutually exclusive. That is, without departing from the spirit and scope of the present invention, specific shapes, structures, and characteristics described may be implemented in relation to one embodiment in another embodiment, and the location of individual components within each disclosed embodiment. Alternatively, it should be understood that the arrangement may change, and like reference numbers in the drawings indicate the same or similar function throughout the various aspects. In the description of the present embodiment, expressions such as left, right, first, second, etc. indicate relative positions, directions, and orders, and their technical meanings are not limited to dictionary meanings.

1 is a block diagram showing the overall configuration of an electric bus charging control system of this embodiment, and FIG. 2 is a block diagram showing the main configuration of a power control module, which is a main part of the electric bus charging control system of this embodiment.

Referring to Figure 1, the electric bus charging control system of the present embodiment, a power bank (10, Power Bank), connected to the power bank 10, the power provided from the power bank 10, each electric bus (40, EV: Electric Vehicle), a plurality of dispensers (20, DP: Dispenser), and an operating system (30, CSMS: Charging Station Management Systems) that monitors and controls the charging operation of the power bank 10 and each dispenser 20 ). That is, the electric bus charging control system configures a power bank type charging system that enables charging of multiple vehicles by connecting a power bank and a dispenser in a 1:N manner. The power bank 10 for this purpose has a plurality of output channels (power transmission paths), and a pair of left and right output channels are allocated to each dispenser 20 .

The power bank 10 converts power supplied through a switchboard (not shown) into charging power and provides it to each dispenser 20, and is composed of a power supply device capable of supplying power in units of hundreds of kW.

The dispenser 20 supplies power received from the power bank 10 to the electric bus 40, and a plurality of dispensers 20 may be connected to one power bank 10. The dispenser 20 may be configured as a single dispenser having one charging gun, but is configured as a dual dispenser having two charging guns in order to operate an efficient charging system. Therefore, one dispenser 20 can simultaneously charge a pair of electric buses 40 (EV: Electric Vehicle) through the left and right charging guns. To this end, each dispenser 20 is configured to receive power from the power bank 10 through a pair of output channels.

In addition, in the electric bus charging control system of the present embodiment, any one of the plurality of dispensers 20 is set as a master dispenser, and each of the remaining dispensers, that is, slave dispensers are master dispensers It is configured to work with (DP1).

The master dispenser DP1 collects various types of charging information including SOC information and user request information from the dispensers and transmits them to the power bank 10 . To this end, the slave dispensers DP2 and DP3 are configured to interwork with the master dispenser DP1 through LAN communication, and interwork between the master dispenser DP1 and the power bank 10 through RS485 or LAN communication. In this way, by setting one dispenser 20 of the plurality of dispensers 20 as the master dispenser, it is not necessary to separately install a local controller (LC) for controlling each dispenser 20, thereby and easy to manage.

The operating system 30 monitors and manages the power bank 10 and the dispenser 20 interlocked therewith, and functions as a server providing a charging service. The operating system 30 may be connected to the power bank 10 and/or the master dispenser DP1 through Ethernet communication. The operating system 30 may control each dispenser 30 while directly communicating with the master dispenser DP1.

On the other hand, the power bank 10 of the present embodiment includes a power supply module 100 for providing charging power to the dispenser 20, a power bank control module 200 for controlling driving of the power bank 10, and a dispenser ( 20) and a communication module 300 communicating with the operating system 30, a power control module 400 distributing power provided from the power supply module 100 to each dispenser 20 with a predetermined capacity, and each It includes a switching module 500 provided in an output channel and performing a switching operation according to a signal of the power control module 400.

The power supply module 100 has a configuration that directly transmits power to the dispenser 20, and is composed of a plurality of unit power units 110 (PSU: Power Supply Unit). For example, the power supply module 100 is composed of eight unit power units 110 having a capacity of 30 kW, and may be configured to supply power in units of 30 kW while simultaneously supplying power of 240 kW. The power supply module 100 may be composed of an appropriate number of unit power units according to the number of dispensers 20 .

In addition, the power supply module 100 may be composed of a plurality of power groups consisting of one or more unit power units 110 . Accordingly, the power supply module 110 is configured to supply power having a predetermined capacity in units of power groups.

The power bank control module 200 controls driving of the power bank 10 . For example, the power bank control module 200 controls the power supply module 100 so that power applied through the switchgear is converted into chargeable power and supplied, and the master dispenser 20 and the operating system 30 and Controls the communication module so that the communication of

The communication module 300 is a component that transmits and receives various control information with the master dispenser 20 and the operating system 30 . The communication module 300 may include LAN communication for communication with the master dispenser 20 and Ethernet communication for communication with the operating system 30, and may be configured with various types of communication means as needed.

The power control module 400 divides the power provided to each dispenser from the power supply module 100 into predetermined capacities and controls to provide power of different capacities to each dispenser 20 . That is, the power control module 400 controls the switching module 500 installed in each output channel to simultaneously charge, sequentially charge, or emergency charge for a plurality of electric buses 40 connected to each dispenser 20. make it possible The power control module 400 distributes power provided to each dispenser 20 by controlling the switching module 500 based on SOC information of the electric bus 40 transmitted from the master dispenser 20 and user request information. do. 1 illustrates a configuration in which the power control module 400 is provided in the power bank 10, the power control module 400 may be provided in the master dispenser DP1.

The switching module 500 is switched according to the control signal of the power control module 400 to connect or disconnect the output channels between the power supply module 100 and each dispenser 20 . In addition, the switching module 500 connects or separates different output channels so that the power provided to the dispenser 20 on one side is converted to and provided to the dispenser 20 on the other side. The switching module 500 may be composed of a plurality of relay switches installed between each output channel.

Referring to FIG. 2 , the power control module 400 of this embodiment includes an SOC information collection unit 410, a user request information collection unit 420, a switching information generation unit 430, and an output current control unit 440. and a switching control unit 450.

Here, the SOC information collection unit 410 is a component that collects state of charge (SOC) information of a vehicle being charged. SOC information refers to the degree of remaining capacity (energy) currently charged in the battery, and is usually a value expressed as a percentage. The SOC information collecting unit 410 provides the collected SOC information to the switching information generating unit 430 .

The master dispenser 20 provides SOC information of vehicles being charged in each dispenser 20 to the power bank 10 in real time. The SOC information provided from the master dispenser 20 includes identification information of the dispenser 20 to which the corresponding vehicle is connected and the charging gun. The SOC information collection unit 410 collects real-time SOC information of each vehicle provided from the master dispenser 20 .

The user request information collection unit 420 collects user request information about the vehicle being charged. The user request information collection unit 420 provides the collected user request information to the switching information generation unit 430 .

In general, electric buses must park in a garage and run again according to a schedule. Therefore, since each electric bus has a different driving schedule, there are vehicles that can be charged for a long time, while there are also vehicles that need to be charged and driven urgently only for a short time. To this end, each dispenser 20 is configured to receive emergency charging request information (ie, time information to finish charging) from the user.

The master dispenser 20 provides the user request information input from each dispenser 20 to the power bank 10 . The user request information provided from the master dispenser 20 includes identification information of the dispenser 20 to which the corresponding vehicle is connected and the charging case. The user request information collection unit 420 collects user request information of each vehicle provided from the master dispenser 20 .

The switching information generator 430 generates switching information for power distribution based on the collected SOC information and user request information. The SOC information and the user request information are provided from the SOC information collection unit 410 and the user request information collection unit 420, respectively. The switching information generator 430 provides the generated switching information to the output current controller 440 and the switching controller 450 .

According to an embodiment, the switching information generation unit 430 checks SOC information of vehicles connected to each dispenser 20, and for a plurality of vehicles being charged, a vehicle having a low SOC value has a relatively large amount of power. Generates switching information so that it can be provided. For example, if the SOC information of a vehicle being charged in the first dispenser (DP1) is 40% and the SOC information of a vehicle being charged in the second dispenser (DP2) is 70%, a vehicle with a relatively low SOC value accesses 1 Switching information is generated so that a large amount of power can be provided to the dispenser DP1. In addition, the switching information generation unit 430 generates switching information that allows power supplied to the corresponding dispenser 20 to be provided to another dispenser 20 when there is a fully charged vehicle.

According to another embodiment, the switching information generation unit 430 checks user request information of vehicles connected to each dispenser 20, and according to the user's request, the dispenser 20 of the vehicle requiring emergency charging has a relatively large capacity. Switching information is generated so that power can be provided. For example, when user request information is not confirmed for a vehicle being charged in the first dispenser (DP1) and user request information (emergency charging request information) is confirmed for a vehicle being charged in the second dispenser (DP2), the second Switching information capable of providing a large amount of power to the dispenser DP2 is generated.

The output current controller 440 controls the power supply module 100 to lower or increase the current supplied to the vehicle according to the generated switching information, with a configuration that enables the switching operation for power distribution to be performed in a sufficiently stable state. do.

In the fast charging system, charging is performed with high power, and when a sudden switching operation is performed in a high power environment, the switching element may be damaged. The output current control unit 440 lowers the current to the reference current or less before the switching operation is performed according to the switching information in order to prevent damage to the switching element, and the power supply module 100 to increase the current again after the switching operation is finished. to control Here, the reference current refers to a low current in a state in which a switching operation can be sufficiently stably performed without the vehicle charging being cut off, and the operation of reducing the current may include an operation of temporarily blocking the current.

The switching control unit 450 controls the operation of each switching element inside the switching module 500 according to the generated switching information. At this time, the switching control unit 450 communicates with the output current control unit 440, controls the switching element to operate after the output current is controlled, and transmits switching termination information to the output current control unit 440 after controlling the switching operation. do.

The switching module 500 turns on/off each switching element according to a control signal from the switching control unit 450 so that the power of the power supply module 100 is appropriately distributed and provided to each dispenser 20 . The switching module 500 may be composed of a plurality of switching elements installed in each output channel. Hereinafter, a configuration in which power is distributed according to the configuration of the switching module 500 will be described according to an embodiment.

3 and 4 are block diagrams showing various examples of power distribution performed in the electric bus charging control system of the present embodiment.

As shown in these figures, in the electric bus charging control system of this embodiment, the power supply module 100 forms a plurality of power groups C1, C2, and C3, and each dispenser DP1, DP2, DP3 in a group unit ), and one or more unit power units 110 are assigned to each group. In addition, each power group is divided into a left power group supplying power through the left charging gun of the dispenser and a right power group supplying power through the right charging gun of the dispenser.

First, referring to FIG. 3, the electric bus charging control system of this embodiment is composed of a 1:3 charging system to which three dispensers 20 are connected, and the power supply module 100 has three power It consists of groups (GR1_L, GR2_L, GR3_L, GR1_R, GR2_R, GR3_R). That is, the power groups GR1, GR2, and GR3 are grouped in the same number as the dispensers DP1, DP2, and DP3, and each power group and the dispenser are matched 1:1.

In addition, in the electric bus charging control system of the present embodiment, one or more groups supplying power of different capacities among a plurality of power groups are included. For example, two unit power units 110 are allocated to the left and right first power groups GR1_L and GR1_R to supply power of 60 kW, respectively, and the second and third power groups GR2_L, GR2_R, GR3_L, GR3_R) is configured so that one unit power unit 110 is allocated to supply power of 30 kW each. As one or more groups supplying power of different capacities are included in this way, power of various capacities may be provided through power distribution.

In the electric bus charging control system having the above configuration, the matched power groups GR1 , GR2 , and GR3 and the dispensers DP1 , DP2 , and DP3 are connected to output channels C1 , C2 , and C3 . At this time, the power groups (GR1_L, GR2_L, GR3_L) of the left unit are connected to the left charging gun of each dispenser (DP1, DP2, DP3), and the power group (GR1_R, GR2_R, GR3_R) of the right unit is connected to each dispenser (DP1, DP2) , connected to the charging gun on the right side of DP3).

In addition, the electric bus charging control system of this embodiment is configured such that the switching module 500 is installed between the power groups GR1 , GR2 , and GR3 and the dispensers DP1 , DP2 , and DP3 to distribute power.

The switching module 500 is composed of a plurality of switching elements sw1 to sw6 installed in each of the output channels C1, C2, and C3.

Specifically, the switching module 500 includes first to third switching elements sw1 , sw2 , and sw3 installed in the first to third output channels C1 , C2 , and C3 on the left and right sides. In addition, any one of the first to third output channels C1, C2, and C3 is set as the master output channel C3, and the switching module 500 is set to the master output channel C3 and another output channel ( The fourth and fifth switching elements sw4 and sw5 are installed between C1 and C2, and the sixth switching element sw6 connects the master output channels C3_L and C3_R of the left and right output channels.

The first to third switching elements sw1 , sw2 , and sw3 turn on/off the connection between the respective power groups GR1 , GR2 , and GR3 and the dispensers DP1 , DP2 , and DP3 matched to the corresponding power groups. Accordingly, the first to third switching elements sw1 , sw2 , and sw3 control the power of each power group GR1 , GR2 , and GR3 to be supplied to or not supplied to the matched dispensers DP1 , DP2 , and DP3 .

Also, the fourth and fifth switching devices sw4 and sw5 turn on/off the connection of the dispensers DP1 , DP2 , and DP3 matched to the different power groups GR1 , GR2 , and GR3 . Accordingly, the fourth and fifth switching elements sw4 and sw5 control the power of a specific power group to be supplied to or not supplied to the dispensers DP1 , DP2 and DP3 matched to other output groups.

Also, the sixth switching element sw6 turns on/off the connection between the left power groups GR1_L, GR2_L, and GR3_L and the right power groups GR1_R, GR2_R, and GR3_R. Accordingly, the sixth switching element sw6 controls the power of the output group connected to the charging gun on one side (eg, the right side) to be supplied or not to the charging gun on the other side (eg, the left side).

That is, the switching module 500 according to the present embodiment distributes power between each dispenser and simultaneously distributes power between the left and right charging guns of the dispenser. In addition, according to the switching module 500 of the present embodiment, the switching module can be implemented using a minimum number of switching elements, and thus installation costs can be reduced.

Subsequently, referring to FIG. 4, the electric bus charging control system of this embodiment constitutes a 1:2 charging system having two dispensers (DP1 and DP2), and the power supply module 100 is configured on the left and right sides, respectively. It consists of three power groups (GR1_L, GR2_L, GR3_L, GR1_R, GR2_R, GR3_R). That is, the power groups GR1, GR2, and GR3 are grouped into one more number than the dispensers DP1 and DP2, and the first and second power groups GR1 and GR2 are grouped 1:1 with the dispensers DP1 and DP2, respectively. Matching is performed, and the third power group GR3 functions as an auxiliary power group.

The switching module 500 is composed of a plurality of switching elements sw1 to sw5 installed in each of the output channels C1, C2, and C3. Specifically, the switching module 500 includes the first and second switching elements sw1 and sw2 installed in the left and right first and second output channels C1 and C2, and the third power group GR3 and auxiliary power. A third switching element (sw3) installed in the output channel (C3) of the group). In addition, the third output channel (C3) includes the fourth and fifth switching elements (sw4, sw5) installed between the first and second output channels (C1, C2).

The first and second switching devices sw1 and sw2 turn on/off the connection of the respective power groups GR1 and GR2 and the dispensers DP1 and DP2 matched to the corresponding power groups GR1 and GR2. Accordingly, the first and second switching elements sw1 and sw2 control the power of each power group GR1 and GR2 to be supplied to or not provided to the dispensers DP1 and DP2 matched thereto.

Also, the third switching element sw3 turns on/off the connection between the left power groups GR1_L, GR2_L, and GR3_L and the right power groups GR1_R, GR2_R, and GR3_R. Accordingly, the third switching element sw3 controls the power of the power group connected to the charging gun on one side (eg, the right side) to be supplied or not to the charging gun on the other side (eg, the left side).

In addition, the fourth and fifth switching elements sw4 and sw5 turn on/off the connection of the dispensers DP1 and DP2 matched to the different power groups GR1 and GR2. Accordingly, the fourth and fifth switching elements sw4 and sw5 control the power of a specific power group to be supplied to or not supplied to the dispensers DP1 and DP2 matched to the other power groups.

In this way, the switching module 500 of the present embodiment distributes power among the respective dispensers, and at the same time, an auxiliary power group is further provided so that additional power can be supplied to dispensers requiring additional power supply. In addition, the switching module 500 enables power to be distributed between the left and right charging guns of the dispenser by means of switching elements installed in the auxiliary power group.

Although exemplary embodiments of the present invention have been shown and described as described above, various modifications and other embodiments may be made by those skilled in the art. All of these modifications and other embodiments are to be considered and included in the appended claims without departing from the true spirit and scope of the present invention.

10 : Power Bank
20, DP1, DP2, DP3: dispenser
30: operating system
40: electric bus
100: power supply module 110: unit power unit
200: power bank control module 300: communication module
400: power control module 500: switching module
410: SOC information collection unit 420: user request information collection unit
430: switching information generation unit 440: output current control unit
450: switching control unit
GR1, GR2, GR3: power groups
C1, C2, C3: Output channels
sw1, sw2, sw3, sw4, sw5, sw6: switching elements

Claims (7)

In an electric bus charging control system in which a plurality of dispensers are connected to a power bank and power is supplied in a 1:N manner,
Power supply that is grouped into a plurality of power groups to which one or more unit power units are allocated, and the power groups are connected to each of the dispensers through a pair of left and right output channels in group units to provide power of a predetermined capacity module;
a power control module that controls power supply so that power supplied from the power group on one side to a dispenser matched to the corresponding power group is also supplied to a dispenser matched to the power group on the other side; and,
A switching module configured of a plurality of switching elements installed on the output channel to turn on or off the output channel according to a control signal of the power control module;
Among the plurality of dispensers, one dispenser is set as a master dispenser to transfer SOC information and user request information of each dispense to the power bank to control a charging operation of each dispense;
The power control module,
A SOC information collection unit that collects SOC information of the vehicle, a user request information collection unit that collects user request information, and a switching information generation unit that generates switching information of the switching elements based on the SOC information and the user request information. and an output current control unit that controls the power supply module so that the current supplied to the vehicle through the dispenser is lowered to a reference current or less during a period before and after the switching operation based on the generated switching information, and the generated switching information. And a switching control unit for controlling the switching of the switching elements based on,
An electric bus charging control system configured so that the power provided from the power supply module is distributed to a required capacity and provided to each dispenser. delete delete delete According to claim 1,
The electric bus charging control system of claim 1 , wherein the plurality of power groups includes one or more power groups supplying power of different capacities. According to claim 1,
The power group is matched 1: 1 with the dispenser,
The switching module includes a switching element installed in each output channel connecting each power group and a dispenser matched to the corresponding power group, and a master output channel selected from among a plurality of output channels and a switching device connecting the remaining output channels. element and a switching element connecting said master output channels of left and right power groups. According to claim 1,
The power group includes an auxiliary power group that is matched 1:1 with the dispenser and does not match the dispenser,
The switching module includes a switching element installed in each output channel connecting each power group and a dispenser matched to the corresponding power group, a switching element installed in an output channel connecting the left and right auxiliary power groups, and the auxiliary power An electric bus charging control system comprising a switching element connecting an output channel of a group with the rest of the output channels.

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