CN112455268A - Distributed charging system and method - Google Patents
Distributed charging system and method Download PDFInfo
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- CN112455268A CN112455268A CN202011281132.8A CN202011281132A CN112455268A CN 112455268 A CN112455268 A CN 112455268A CN 202011281132 A CN202011281132 A CN 202011281132A CN 112455268 A CN112455268 A CN 112455268A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
- B60L53/60—Monitoring or controlling charging stations
- B60L53/66—Data transfer between charging stations and vehicles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
- B60L53/10—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles characterised by the energy transfer between the charging station and the vehicle
- B60L53/14—Conductive energy transfer
- B60L53/16—Connectors, e.g. plugs or sockets, specially adapted for charging electric vehicles
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/10—Technologies relating to charging of electric vehicles
- Y02T90/12—Electric charging stations
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/10—Technologies relating to charging of electric vehicles
- Y02T90/14—Plug-in electric vehicles
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/10—Technologies relating to charging of electric vehicles
- Y02T90/16—Information or communication technologies improving the operation of electric vehicles
Abstract
The invention relates to a distributed charging system and a distributed charging method, wherein the system comprises a control cluster, a power cluster and a switch cluster, the control cluster comprises a first control panel and a plurality of vehicle interaction panels, the first control panel is electrically connected with the plurality of vehicle interaction panels, and each vehicle interaction panel is respectively used for interacting with a vehicle; the power cluster comprises a second control board and a plurality of power output modules, and the second control board is electrically connected with the first control board and the plurality of power output modules; the switch cluster comprises a third control plate and a plurality of switch units, the third control plate is electrically connected with the first control plate and the switch units, the switch units form a matrix network, the transverse input ends of the matrix network are respectively connected with a power output module, and the longitudinal output ends of the matrix network are respectively connected with a charging gun. The invention solves the problem that the existing charging system compatible with single-port and multi-port charging sockets can not meet the requirement of joint control residual power distribution, and is convenient to maintain, expand and optimize.
Description
Technical Field
The invention relates to the technical field of electric vehicle charging, in particular to a distributed charging system and method.
Background
With the development of new energy vehicles, the problems of short cruising ability and long charging time of the electric charging vehicle are more prominent, and the development and popularization of the electric vehicle are hindered.
At present, single-socket electric vehicles are mostly seen in the market, the single-socket electric vehicles are limited by single-socket sockets, the upper limit of current supply is low, so that the multi-socket electric vehicles are produced by the power sockets when charging current is effectively increased and charging speed is accelerated without remarkably increasing cost, and for a charger, the compatibility of the single-socket sockets and the multi-socket sockets is a difficult problem to overcome. At present, a plurality of single chargers or split chargers are generally arranged.
If a plurality of single chargers need to be maintained, a plurality of devices need to be opened in sequence, and a plurality of keys repeatedly act for many times, so that the maintenance is troublesome. And the joint control of a plurality of monomers can not be completed, and the residual power can not be freely distributed.
The existing split charger generally completes electrical wiring in advance according to requirements, and once the electrical wiring is completed, the existing split charger is difficult to expand or optimize.
Therefore, a charger which is convenient to maintain, expand and optimize and can meet the requirement of joint control of residual power distribution is lacked in the prior art.
Disclosure of Invention
In view of this, a need exists for a distributed charging system and method, which are used to solve the problem that the existing charging system compatible with single or multiple charging sockets is not capable of satisfying the joint control of the remaining power distribution, and is convenient to maintain, expand and optimize.
In a first aspect, the present invention provides a distributed charging system comprising a control cluster, a power cluster, and a switch cluster, wherein,
the control cluster comprises a first control panel and a plurality of vehicle interaction panels, the first control panel is electrically connected with the plurality of vehicle interaction panels, and each vehicle interaction panel is used for interacting with a vehicle;
the power cluster comprises a second control board and a plurality of power output modules, the second control board is electrically connected with the first control board and the plurality of power output modules, and each power output module is used for generating charging power;
the switch cluster comprises a third control plate and a plurality of switch units, the third control plate is electrically connected with the first control plate and the switch units, the switch units form a matrix network, each transverse input end of the matrix network is connected with one power output module, and each longitudinal output end of the matrix network is connected with one charging gun;
the first control board is used for generating a control strategy according to the interaction information sent by each vehicle interaction board, generating a first control signal and a second control signal according to the control strategy, and then respectively outputting the first control signal and the second control signal to the second control board and the third control board, so that the second control board and the third control board respectively control each power output unit and each switch unit to act.
Preferably, in the distributed charging system, the control policy is one of an equally dividing policy, a priority policy, an incomplete priority policy and a multi-gun simultaneous charging policy.
Preferably, in the distributed charging system, the sharing strategy specifically includes:
after the number of total power output modules connected into the charging loop is determined according to the number of vehicles connected into the charging system, the required current of each vehicle and the maximum output current of a single power output module, the corresponding number of power output modules are intelligently distributed to each vehicle according to the required current of each vehicle.
Preferably, in the distributed charging system, the priority policy specifically includes:
after the priorities are set in sequence according to the charging time of the vehicles, the corresponding number of power output modules are sequentially distributed to the corresponding vehicles according to the priority sequence according to the number of the total power output modules, the required current of each vehicle and the maximum output current of a single power output module.
Preferably, in the distributed charging system, the incomplete priority policy specifically includes:
and after the priorities are set in sequence according to the charging time of the vehicles and one power output module is equally distributed to each vehicle, the corresponding number of power output modules are sequentially distributed to the corresponding vehicles according to the number of the total power output modules, the required current of each vehicle and the maximum output current of a single power output module according to the priority sequence.
Preferably, in the distributed charging system, the multi-gun simultaneous charging strategy specifically includes:
after the number of required power output modules and the number of charging guns are determined according to the required current of the vehicle and the number of charging sockets of the vehicle, the number of power output modules is averagely distributed to each charging gun for charging.
In a second aspect, the present invention further provides a distributed charging method, including the following steps:
the first control board generates a control strategy according to the interaction information sent by each vehicle interaction board, generates a first control signal and a second control signal according to the control strategy, and outputs the first control signal and the second control signal to the second control board and the third control board respectively;
the second control board and the third control board respectively control the power output units and the switch units to act, and the control strategy is realized.
Preferably, in the distributed charging method, the control policy is one of an equally dividing policy, a priority policy, an incomplete priority policy and a multi-gun simultaneous charging policy.
Preferably, in the distributed charging method, the sharing strategy specifically includes: after the number of total power output modules connected into a charging loop is determined according to the number of vehicles connected into a charging system, the required current of each vehicle and the maximum output current of a single power output module, intelligently distributing the corresponding number of power output modules to each vehicle according to the required current of each vehicle;
the multi-gun simultaneous charging strategy specifically comprises the following steps: after the number of required power output modules and the number of charging guns are determined according to the required current of the vehicle and the number of charging sockets of the vehicle, the number of power output modules is averagely distributed to each charging gun for charging.
Preferably, in the distributed charging method, the priority policy specifically includes: after priorities are set in sequence according to the charging time of the vehicles, according to the number of total power output modules, the required current of each vehicle and the maximum output current of a single power output module, sequentially distributing the corresponding number of power output modules to the corresponding vehicles according to the priority sequence;
the incomplete priority strategy specifically comprises the following steps: and after the priorities are set in sequence according to the charging time of the vehicles and one power output module is equally distributed to each vehicle, the corresponding number of power output modules are sequentially distributed to the corresponding vehicles according to the number of the total power output modules, the required current of each vehicle and the maximum output current of a single power output module according to the priority sequence.
[ PROBLEMS ] the present invention
According to the distributed charging system and method provided by the invention, due to the arrangement of the control cluster, different charging strategies can be formulated according to the number of vehicles and the conditions of single-port sockets or multi-port sockets of the vehicles, so that the charging compatibility of the single-port sockets and the multi-port sockets is realized, the number of power output modules accessed into a charging loop is controlled through the second control board, the working state of the switch unit is controlled through the third control board, and further the wiring mode of the power output modules in the charging loop is controlled, so that the capacity expansion and optimization of the charging system can be realized at any time while different charging strategies are realized, and the requirement of joint control of the distribution of the residual power is also met.
Drawings
Fig. 1 is a block diagram of a distributed charging system according to a preferred embodiment of the present invention;
fig. 2 is a schematic diagram of the matrix network in the distributed charging system provided in the present invention.
Detailed Description
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate preferred embodiments of the invention and together with the description, serve to explain the principles of the invention and not to limit the scope of the invention.
Referring to fig. 1 to fig. 2, a distributed charging system according to an embodiment of the present invention includes a control cluster 1, a power cluster 2, and a switch cluster 3.
The control cluster 1 comprises a first control board 11 and a plurality of vehicle interaction boards 12, the first control board 1 is electrically connected with the plurality of vehicle interaction boards 12, and each vehicle interaction board 12 is used for interacting with a vehicle.
The power cluster 2 comprises a second control board 21 and a plurality of power output modules 22, the second control board 21 is electrically connected with the first control board 11 and the plurality of power output modules 22, and each power output module 22 is used for generating charging power.
The switch cluster 3 comprises a third control plate 31 and a plurality of switch units 32, the third control plate 31 is connected with the first control plate 11 and the switch units 32 are electrically connected and a plurality of the switch units 32 form a matrix network, each transverse input end of the matrix network is respectively connected with one power output module 22, and each longitudinal output end of the matrix network is respectively connected with one charging gun.
The first control board 11 is configured to generate a control strategy according to the interaction information sent by each vehicle interaction board 12, generate a first control signal and a second control signal according to the control strategy, and output the first control signal and the second control signal to the second control board 21 and the third control board 31, so that the second control board 21 and the third control board 31 control each power output unit 22 and each switch unit 33 to operate.
Specifically, the distributed charging system provided by the embodiment of the present invention can implement different charging modes according to the vehicle conditions, and since different control strategies are pre-stored in the first control board 11 configured in the control cluster, the technical defect of single charging mode of the current electric vehicle can be overcome, the charging efficiency can be improved, and the compatibility between a single charging seat and multiple charging seats can be achieved without adding additional protocols or components. In the specific implementation, when a vehicle is connected, different control strategies can be formulated according to the number of connected vehicles due to the plurality of vehicle interaction boards, in addition, different control strategies can be formulated according to the charging interfaces of the connected vehicles due to the fact that the electric vehicle can be provided with a plurality of charging interfaces, in addition, when a plurality of vehicles are charged, the charging modes can also be different, so different control strategies can also be formulated, the different control strategies can be realized by connecting different numbers of power output modules 22 into a charging loop or different wiring modes of the power output modules 22, in addition, due to the fact that the switch units 32 in the matrix network are arranged, the connection of different numbers of power output modules 22 or power output modules 22 in different wiring modes can be realized according to the working state of each switch unit 32, and finally, realizing the required charging control strategy.
According to the distributed charging system provided by the invention, as the control cluster 1 is arranged, different charging strategies can be formulated according to the number of vehicles and the conditions of single-port sockets or multi-port sockets of the vehicles, so that the charging compatibility of the single-port sockets and the multi-port sockets is realized, the number of the power output modules 22 connected into the charging loop is controlled by the second control board 21, the working state of the switch unit 32 is controlled by the third control board 31, and then the wiring mode of the power output modules 22 in the charging loop is controlled, so that the capacity expansion and optimization of the charging system can be realized at any time while different charging strategies are realized, and the requirement of joint control of the distribution of the residual power is also met.
In specific implementation, the first control board 11 is a vehicle communication master control unit, and is responsible for interactive communication with one or more vehicle CANs. The method comprises the steps of acquiring and collecting vehicle information, analyzing real-time charging data, and informing other clusters of completing charging actions through a decision program, wherein a first control board 11 can be composed of a cotex-m 3+ cotex-a 9 chip, m3 is responsible for real-time scheduling control performance, a9 is responsible for data depth operation and is matched with a cloud system to complete a charging control process, and a vehicle interaction board 12 is composed of a cotex-m 3 chip and is responsible for a vehicle national standard communication protocol. The second control board 21 plays a role of system power output and controls the working states of a plurality of power output modules, and may be composed of a cottex-m 3 chip. The third control panel 31 plays a role of system power output distribution, and can be constructed of a cotex-m 3 chip by controlling a single switching unit to precisely distribute power to each gun.
In a preferred embodiment, the control strategy is one of an equally dividing strategy, a priority strategy, an incomplete priority strategy and a multi-gun simultaneous charging strategy, and different charging strategies can realize charging in different modes so as to realize compatibility of a single-port socket and a multi-port socket.
In specific implementation, the equipartition strategy specifically comprises: after the total number of power output modules 22 connected into the charging loop is determined according to the number of vehicles connected into the charging system, the required current of each vehicle and the maximum output current of a single power output module 22, the corresponding number of power output modules 22 are intelligently distributed to each vehicle according to the required current of each vehicle.
Specifically, the equipartition strategy means that charging current is correspondingly distributed according to the demand of the vehicle, and if the demand current of the vehicle is C, the actual battery voltage of the charging system is V, the maximum output current of a single power output module 22 is C1, the maximum power of the single power output module 22 is P, and the number of modules required by the vehicle is N, i can obtain that
That is, N is C/C1, after the vehicles are connected, the total number of power output modules 22 connected into the charging loop can be determined according to the number of vehicles connected into the charging system, the required current of each vehicle and the maximum output current control of a single charging gun, and then the power output modules 22 are intelligently distributed to each charging gun. For example, the process of intelligent allocation is as follows:
a, B, C three cars to charge; the battery voltage of the charging system is 500V, the required current of the vehicle A is 90A, the required current of the vehicle B is 60A, and the required current of the vehicle C is 30A; the maximum output power of a single power output module 22 is 15kW, and the number of power output modules 22 is 8.
The maximum current of the single power output module 22 is 30A in the constant power section at 500V calculated according to the formula. Therefore, 3 power output modules 22 are needed for the vehicle A, 2 power output modules 22 are needed for the vehicle B, and 1 power output module 22 is needed for the vehicle C. So according to the allocation policy, at this time:
a first round of dispensing: the vehicle A is distributed to 1, the vehicle B is distributed to 1, and the vehicle C is distributed to 1;
a second round of dispensing: the vehicle A is allocated to 2, the vehicle B is allocated to 2, and the vehicle C is allocated to 1;
the third cycle was dispensed: the vehicle A is distributed to 3, the vehicle B is distributed to 2, and the vehicle C is distributed to 1;
at this time, the three vehicles all obtain the required number of power output modules 22, the distribution is completed, and the remaining two power output modules 22 are left empty, so that the purpose of sharing is achieved.
In specific implementation, after the second control board 21 and the third control board 31 receive the first control signal and the second control signal, the second control board 21 controls the six power output modules 22 to be started, the third control board 31 controls the switch units 32 to operate, so that the three power output modules 22 are connected to the first gun, the two power output modules 22 are connected to the second gun, one power output module 22 is connected to the third gun, the first gun is connected to the vehicle a, the second gun is connected to the vehicle B, and the third gun is connected to the vehicle C, so that the sharing strategy is realized.
In a further embodiment, the priority policy specifically includes: after the priorities are set in sequence according to the charging time of the vehicles, the corresponding number of power output modules 22 are sequentially distributed to the corresponding vehicles according to the priority order according to the number of the total power output modules 22, the required current of each vehicle and the maximum output current of a single power output module 22.
Specifically, the priority strategy is to sort according to the time from the beginning to the end, and the known order S [ N ] of a time sequence is obtained, wherein N is the time sequence, N is more than or equal to 1 and less than or equal to the maximum gun number, for example, S ← {1,2,3,4,5} is the first gun of 1 gun, the second gun of 2 guns, and so on. For example, the specific allocation process is as follows:
a, B, C three cars to charge; the battery voltage is 500V, the required current of the vehicle A is 90A, the required current of the vehicle B is 60A, and the required current of the vehicle C is 30A; the power of a single power output module 22 is 15kW, and the number of the power output modules 22 is 5.
According to calculation, the maximum current of the power converter is 30A at 500V in the constant power section. It can be known that the vehicle a needs 3 power output modules 22, the vehicle B needs 2 power output modules 22, the vehicle C needs 1 power output module 22, the time sequence is a > B > C, and according to the allocation strategy:
a first round of dispensing: the vehicle A is allocated to 3, the vehicle B is allocated to 0, and the vehicle C is allocated to 0;
a second round of dispensing: the vehicle A is allocated to 3, the vehicle B is allocated to 2, and the vehicle C is allocated to 0;
since 3+2+0 is greater than or equal to 5, the policy exits allocation.
The final result is: car a is assigned 3, car B is assigned 2, and car C is assigned 0.
At this time, the 5 power output modules 22 are all distributed, and preferentially supply power to the vehicles coming first, and when the vehicles with high priority meet the power supply requirement, the power output modules are distributed to the vehicles with low priority in sequence.
In specific implementation, after the second control board 21 and the third control board 31 receive the first control signal and the second control signal, and the vehicle a is connected to the first gun, the second control board 21 controls the three power output modules 22 to start first, and the third control board 31 controls the switch units 32 to operate, so that the three power output modules 22 are connected to the first gun to charge the vehicle a; after the vehicle B is connected with a second gun, the second control board 21 controls the two power output modules 22 to be started, and the two power output modules 22 are connected with the second gun; after the third gun is connected to the vehicle C, since there is no remaining power output module 22, charging can be performed only after there is a vacant power output module 22, thereby implementing a priority policy.
In a further embodiment, the incomplete priority policy specifically includes: and after the priorities are set in sequence according to the charging time of the vehicles and one power output module is equally distributed to each vehicle, the corresponding number of power output modules are sequentially distributed to the corresponding vehicles according to the number of the total power output modules, the required current of each vehicle and the maximum output current of a single power output module according to the priority sequence.
Specifically, the incomplete priority strategy is basically the same as the priority strategy, except that the incomplete priority vehicles ensure that each vehicle has at least one power output module 22 according to the number of the vehicles, and then the vehicles firstly come according to the principle that the charging time of the vehicles comes first and then come, and the surplus power is distributed to the rest vehicles according to the rule until no available power is distributed. For example, the specific allocation process is as follows:
a, B, C three cars to charge; the battery voltage is 500V, the required current of the vehicle A is 90A, the required current of the vehicle B is 60A, and the required current of the vehicle C is 30A; the power of a single power output module 22 is 15kW, and the number of the power output modules 22 is 5.
According to calculation, the maximum current of the power converter is 30A at 500V in the constant power section. It can be known that the vehicle a needs 3 power output modules 22, the vehicle B needs 2 power output modules 22, the vehicle C needs 1 power output module 22, the time sequence is a > B > C, and according to the allocation strategy:
a first round of dispensing: the vehicle A is distributed to 1, the vehicle B is distributed to 1, and the vehicle C is distributed to 1;
a second round of dispensing: the vehicle A is distributed to 3, the vehicle B is distributed to 1, and the vehicle C is distributed to 1;
since 3+1+1 is greater than or equal to 5, the policy exits allocation.
The final result is: car a is assigned 3, car B is assigned 1, and car C is assigned 1.
At this time, 5 power output modules 22 are distributed, and power is preferentially supplied to the vehicles coming first while each vehicle is ensured to have one power output module 22, and when the vehicles with high priority meet the power supply requirement, the vehicles with low priority are distributed in sequence.
In specific implementation, after the second control board 21 and the third control board 31 receive the first control signal and the second control signal, the second control board 21 first controls the three power output modules 22 to start, the third control board 31 controls the switch units 32 to operate, so that the three power output modules 22 are respectively connected to a charging gun, then the second control board 21 controls the two power output modules 22 to start, and the third control board 31 controls the switch units 32 to operate, so that the two power output modules 22 are connected to the first gun to charge the vehicle a.
In a further embodiment, the multi-gun simultaneous charging strategy specifically comprises:
after the number of required power output modules and the number of charging guns are determined according to the required current of the vehicle and the number of charging sockets of the vehicle, the number of power output modules is averagely distributed to each charging gun for charging.
Specifically, the multi-gun simultaneous charging strategy is to charge a vehicle by using multiple charging guns at the same time, and the output current of each charging gun is the same, for example, the specific distribution process is as follows:
the vehicle A with three charging ports is used for charging; the battery voltage is 500V, and the vehicle demand current is 90A; the power of a single power output module 22 is 15kW, and the number of the power output modules 22 is 5.
According to calculation, the maximum current of the power converter is 30A at 500V in the constant power section. It can be seen that vehicle a requires 3 power output modules 22, and vehicle a requires three charging guns, so according to the distribution strategy:
a first round of dispensing: the first gun is assigned to 1, the second gun to 1 and the third gun to 1.
The policy exits the allocation.
At this time, the vehicle a obtains the required number of power output modules 22, the three charging guns are equally distributed to the power output modules 22, the distribution is completed, and the remaining two power output modules 22 are vacant, so that the purpose of equal distribution is achieved.
In specific implementation, after the second control board 21 and the third control board 31 receive the first control signal and the second control signal, the second control board 21 controls the three power output modules 22 to be started, the third control board 31 controls the switch units 32 to operate, so that the three power output modules 22 are respectively connected with one charging gun, and then the three charging guns are all connected with the vehicle a, i.e., a multi-gun simultaneous charging strategy is realized.
Based on the distributed charging system, the invention also correspondingly provides a distributed charging method, which comprises the following steps:
the first control board generates a control strategy according to the interaction information sent by each vehicle interaction board, generates a first control signal and a second control signal according to the control strategy, and outputs the first control signal and the second control signal to the second control board and the third control board respectively;
the second control board and the third control board respectively control the power output units and the switch units to act, and the control strategy is realized.
Preferably, the control strategy is one of an equally dividing strategy, a priority strategy, an incomplete priority strategy and a multi-gun simultaneous charging strategy.
Preferably, the sharing strategy specifically comprises: after the number of total power output modules connected into a charging loop is determined according to the number of vehicles connected into a charging system, the required current of each vehicle and the maximum output current of a single power output module, intelligently distributing the corresponding number of power output modules to each vehicle according to the required current of each vehicle;
the multi-gun simultaneous charging strategy specifically comprises the following steps: after the number of required power output modules and the number of charging guns are determined according to the required current of the vehicle and the number of charging sockets of the vehicle, the number of power output modules is averagely distributed to each charging gun for charging.
Preferably, the priority policy specifically includes: after priorities are set in sequence according to the charging time of the vehicles, according to the number of total power output modules, the required current of each vehicle and the maximum output current of a single power output module, sequentially distributing the corresponding number of power output modules to the corresponding vehicles according to the priority sequence;
the incomplete priority strategy specifically comprises the following steps: and after the priorities are set in sequence according to the charging time of the vehicles and one power output module is equally distributed to each vehicle, the corresponding number of power output modules are sequentially distributed to the corresponding vehicles according to the number of the total power output modules, the required current of each vehicle and the maximum output current of a single power output module according to the priority sequence.
Since the above has been described in detail for the distributed charging system, no further description is given here.
In summary, the distributed charging system provided by the present invention, due to the control cluster 1, can make different charging strategies according to the number of vehicles and the conditions of the single-outlet socket or the multiple-outlet socket of the vehicle, so as to implement the charging compatibility of the single-outlet socket and the multiple-outlet socket, control the number of the power output modules 22 connected into the charging loop through the second control board 21, control the operating state of the switch unit 32 through the third control board 31, and further control the connection manner of the power output modules 22 in the charging loop, and can implement the capacity expansion and optimization of the charging system at any time while implementing different charging strategies, and also meet the requirement of the joint control of the remaining power distribution.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention.
Claims (10)
1. A distributed charging system comprising a control cluster, a power cluster, and a switch cluster, wherein,
the control cluster comprises a first control panel and a plurality of vehicle interaction panels, the first control panel is electrically connected with the plurality of vehicle interaction panels, and each vehicle interaction panel is used for interacting with a vehicle;
the power cluster comprises a second control board and a plurality of power output modules, the second control board is electrically connected with the first control board and the plurality of power output modules, and each power output module is used for generating charging power;
the switch cluster comprises a third control plate and a plurality of switch units, the third control plate is electrically connected with the first control plate and the switch units, the switch units form a matrix network, each transverse input end of the matrix network is connected with one power output module, and each longitudinal output end of the matrix network is connected with one charging gun;
the first control board is used for generating a control strategy according to the interaction information sent by each vehicle interaction board, generating a first control signal and a second control signal according to the control strategy, and then respectively outputting the first control signal and the second control signal to the second control board and the third control board, so that the second control board and the third control board respectively control each power output unit and each switch unit to act.
2. The distributed charging system of claim 1, wherein the control strategy is one of an equipartition strategy, a priority strategy, an incomplete priority strategy, and a multi-gun co-charging strategy.
3. The distributed charging system according to claim 2, wherein the sharing strategy is specifically:
after the number of total power output modules connected into the charging loop is determined according to the number of vehicles connected into the charging system, the required current of each vehicle and the maximum output current of a single power output module, the corresponding number of power output modules are intelligently distributed to each vehicle according to the required current of each vehicle.
4. The distributed charging system according to claim 2, wherein the prioritization policy is specifically:
after the priorities are set in sequence according to the charging time of the vehicles, the corresponding number of power output modules are sequentially distributed to the corresponding vehicles according to the priority sequence according to the number of the total power output modules, the required current of each vehicle and the maximum output current of a single power output module.
5. The distributed charging system according to claim 2, wherein the incomplete priority policy is specifically:
and after the priorities are set in sequence according to the charging time of the vehicles and one power output module is equally distributed to each vehicle, the corresponding number of power output modules are sequentially distributed to the corresponding vehicles according to the number of the total power output modules, the required current of each vehicle and the maximum output current of a single power output module according to the priority sequence.
6. The distributed charging system according to claim 2, wherein the multi-gun co-charging strategy is specifically:
after the number of required power output modules and the number of charging guns are determined according to the required current of the vehicle and the number of charging sockets of the vehicle, the number of power output modules is averagely distributed to each charging gun for charging.
7. A distributed charging method, comprising the steps of:
the first control board generates a control strategy according to the interaction information sent by each vehicle interaction board, generates a first control signal and a second control signal according to the control strategy, and outputs the first control signal and the second control signal to the second control board and the third control board respectively;
the second control board and the third control board respectively control the power output units and the switch units to act, and the control strategy is realized.
8. The distributed charging method of claim 7, wherein the control strategy is one of an equipartition strategy, a priority strategy, an incomplete priority strategy, and a multi-gun co-charging strategy.
9. The distributed charging method of claim 8,
the sharing strategy specifically comprises the following steps: after the number of total power output modules connected into a charging loop is determined according to the number of vehicles connected into a charging system, the required current of each vehicle and the maximum output current of a single power output module, intelligently distributing the corresponding number of power output modules to each vehicle according to the required current of each vehicle;
the multi-gun simultaneous charging strategy specifically comprises the following steps: after the number of required power output modules and the number of charging guns are determined according to the required current of the vehicle and the number of charging sockets of the vehicle, the number of power output modules is averagely distributed to each charging gun for charging.
10. The distributed charging method of claim 8,
the priority strategy specifically comprises the following steps: after priorities are set in sequence according to the charging time of the vehicles, according to the number of total power output modules, the required current of each vehicle and the maximum output current of a single power output module, sequentially distributing the corresponding number of power output modules to the corresponding vehicles according to the priority sequence;
the incomplete priority strategy specifically comprises the following steps: and after the priorities are set in sequence according to the charging time of the vehicles and one power output module is equally distributed to each vehicle, the corresponding number of power output modules are sequentially distributed to the corresponding vehicles according to the number of the total power output modules, the required current of each vehicle and the maximum output current of a single power output module according to the priority sequence.
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Denomination of invention: A Distributed Charging System and Method Effective date of registration: 20230628 Granted publication date: 20230210 Pledgee: Guanggu Branch of Wuhan Rural Commercial Bank Co.,Ltd. Pledgor: Wuhan Hezhi Digital Energy Technology Co.,Ltd. Registration number: Y2023420000268 |