CN113043898A - Charging pile automatic power distribution method based on annular connection method - Google Patents
Charging pile automatic power distribution method based on annular connection method Download PDFInfo
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- CN113043898A CN113043898A CN202110518755.0A CN202110518755A CN113043898A CN 113043898 A CN113043898 A CN 113043898A CN 202110518755 A CN202110518755 A CN 202110518755A CN 113043898 A CN113043898 A CN 113043898A
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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
- B60L53/63—Monitoring or controlling charging stations in response to network capacity
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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
-
- 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
-
- 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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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention discloses an automatic power distribution method of a charging pile based on annular connection, which comprises the following steps: acquiring a serial number of a charging gun; searching other modules which can be associated for the charging gun according to the module online condition of the two sides of the direct connection module of the charging gun; associating the other module found with the charging gun; distributing output power of a module associated with the charging gun to the charging gun. The method of the invention carries out automatic power distribution by searching in real time according to the number of the on-line modules, even if partial modules are damaged and dropped in the later period, the use of most guns is not influenced, the full power output of any single gun, the average power output of any double guns and the average power distribution as far as possible of more than three guns can be realized, if the uniform distribution cannot be realized due to the limitation of the annular connection method, the gun which is started first obtains larger power, and the high-efficiency power distribution is realized.
Description
Technical Field
The invention relates to a power distribution method of a charging pile, and belongs to the technical field of electric vehicle charging.
Background
A plurality of power supply modules (hereinafter referred to as modules) are intensively installed in a cabinet body in a hand-pulling mode, and a system which is intensively controlled by one MCU is called as a rectifier cabinet. The stake end that has rifle line and car end and directly link is called and is filled electric pile, does not place any module in filling electric pile. When charging is needed, the requirements are transmitted to the rectifier cabinet through the CAN bus, the rectifier cabinet is used for controlling the modules in a unified mode, and the whole system is called as an annular split body.
As shown in fig. 6, taking the ring connection of 5 modules 5 to guns as an example, the modules are connected through power relays K1-K5, and each direct-connected module is connected with a corresponding charging gun through output relays G1-G5, and during charging, the output relays G1-G5 are always closed. The invention deals with the power distribution problem when any gun is started and the closing strategy problem of the power relay connected between the modules.
In the prior art, when the rectifier cabinet control system performs module output control, charging situations of charging piles in different quantities are completely listed according to the number of actual modules and the number of piles in the rectifier cabinet. Assuming that 5 modules are installed in the rectifier cabinet and 5 charging piles are connected, 1-5 guns are charged at the same time, and for each condition, a power distribution meter is designed according to the charging sequence and is led into a rectifier cabinet control system. In the using process, the rectifier cabinet control system searches the power distribution conditions listed in the table according to the actual charging condition to carry out module control output.
The power allocation method has the following disadvantages:
1. according to different application scenarios, for example, 10 modules are placed at certain stations, and 10 guns are placed; some stations place 8 modules, 8 guns, and two different tables are designed according to the number of the modules for importing. Once the scale rises, the number of power allocation tables is staggering and difficult to maintain later.
2. The rectifier cabinet control system is communicated with the modules according to the introduced tables, and when the number of modules on line is found to be inconsistent with the introduced tables, the modules cannot be on line. The initial stage probably does not have abnormal conditions, and later stage if in the use, a module takes place to damage, will lead to all filling electric pile under a rectifier cabinet can not use.
3. The table is imported in advance and cannot be dynamically adjusted according to the number of real-time online modules. Such as: at a certain moment, have two guns charging, what the form design is that the serial number is 1 the rifle uses No. 1 No. 2 No. 3 modules, and the serial number is 4 the rifle uses No. 4 No. 5 No. 6 modules, if No. 4 No. 5 No. 6 modules all damaged the off-line, the serial number is 4 the rifle will not use.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention provides an automatic power distribution method for a charging pile based on annular connection.
The invention specifically adopts the following technical scheme:
an automatic power distribution method of a charging pile based on annular connection is characterized by comprising the following steps:
acquiring a serial number of a charging gun;
searching other modules which can be associated for the charging gun according to the module online condition of the two sides of the direct connection module of the charging gun;
associating the other module found with the charging gun;
distributing output power of a module associated with the charging gun to the charging gun.
Preferably, the finding a module that can be associated for the charging gun according to the online condition of the modules on the two sides of the direct connection module of the charging gun includes:
when the modules are on-line on both sides of the direct connection module, judging which side has a large number of modules, and judging whether the adjacent gun on the side with the large number of modules of the charging gun starts charging, if the charging is started, returning the serial number of the adjacent module on the opposite side of the side with the large number of modules of the direct connection module, otherwise, returning the serial number of the adjacent module on the side with the large number of modules of the direct connection module;
when only one side of the two sides of the direct connection module is on line, returning the serial number of the adjacent module at the on-line side of the module of the direct connection module;
when no module is on line on both sides of the directly connected module, judging which side has more idle modules, judging whether the adjacent gun on the side with more idle modules of the charging gun starts charging, if the charging is started, returning the adjacent module serial number on the opposite side of the side with more idle modules of the directly connected module, and if not, returning the adjacent module serial number on the side with more idle modules of the directly connected module;
the returned adjacent module serial number is the module serial number with which the charging gun can be associated.
Preferably, when a plurality of charging guns exist, the modules which can be associated are searched for the charging guns in sequence according to the charging starting sequence.
Preferably, before the step of searching for other modules that can be associated for the charging gun according to the online condition of the modules on the two sides of the directly connected module of the charging gun, the method further includes:
according to the online condition of the direct connection module, when the direct connection module is idle, associating the direct connection module with the charging gun; and when the direct connection module is online, judging whether the direct connection module is associated with the charging gun, if so, continuously searching other modules which can be associated, and if not, finishing the searching of the associable modules of the charging gun.
Preferably, when the other modules which can be associated with the charging gun cannot be searched according to the online condition of the modules on the two sides of the directly connected module of the charging gun, the search of the modules which can be associated with the charging gun is finished.
Preferably, said distributing output power of modules associated with said charging gun to said charging gun comprises:
all modules perform flow reduction output;
disconnecting the relays connected between the modules;
boosting all modules;
a relay connected between the modules is sucked;
module power is output to the charging gun.
Further preferably, the module power output to the charging gun comprises:
when the rifle that charges does the insulation:
the output of the direct connection module of the charging gun is set according to the voltage and current required by the gun end, and other modules related to the charging gun are shut down;
charging gun charging stage:
the module current setting method comprises the following steps: the gun end required current is divided by the number of modules related to the charging gun to obtain average current, and the current of each module is set according to the average current obtained through calculation;
the module voltage setting method comprises the following steps: the direct connection module is set according to the voltage required by the gun end; and the non-direct connection module is arranged according to the output voltage of the direct connection module when the output voltage exceeds the direct connection module, and is arranged according to the required voltage of the gun end when the output voltage is consistent with the direct connection module.
Further preferably, when all modules associated with the charging gun have the same voltage or the modules with different voltages have no output, the relays between all modules under the charging gun are closed, and other charging guns are polled.
Has the advantages that:
the automatic power distribution method of the invention searches in real time according to the number of the on-line modules for automatic power distribution, even if the modules are damaged and dropped in the later period, the use of most guns is not influenced, the full power output of any single gun, the average power output of any double guns and the average power distribution of more than three guns as far as possible can be realized, if the uniform distribution cannot be realized due to the limitation of the annular connection method, the gun which is started first obtains larger power, and the efficient power distribution is realized.
Drawings
FIG. 1 is a general flow chart of an embodiment of the present invention.
FIG. 2 is a block diagram of a module lookup and association flow diagram according to an embodiment of the invention.
Fig. 3 is a charging flow chart according to an embodiment of the invention.
FIG. 4 is a diagram illustrating a power output control strategy for a module according to an embodiment of the present invention.
Fig. 5 is a diagram illustrating a module power output power relay closing strategy according to an embodiment of the invention.
FIG. 6 is a schematic view of a circular splicing process.
Detailed Description
The process of the present invention is described in further detail below with reference to specific examples.
As shown in fig. 1, the embodiment provides an automatic power distribution method for a charging pile based on a ring connection method, which includes the following steps:
1. starting;
2. judging whether the contactor at the power input end of the module is closed, if so, turning to the step 3, and otherwise, waiting;
3. setting the state mark of the online module to be normal;
4. copying a current module allocation strategy;
5. judging whether all guns are in a charging stop state, if so, turning to a step 6, and otherwise, turning to a step 7;
6. all fault modules are set to be normal;
7. judging whether modules need to be redistributed (if guns are charged and modules are not distributed to guns and are in an idle state, the modules need to be redistributed); if the step 8 is needed, otherwise, turning to the step 1;
8. initializing and clearing relevant data (including data of a relay closing control strategy and the association relation between a gun and a module);
9. judging whether an idle module exists; if yes, turning to the step 10, otherwise, turning to the step 1;
10. and judging whether all guns are distributed with modules or not, if not, acquiring gun numbers of the unassigned modules, and searching and associating the modules.
In the annular split system, each gun is directly connected with one module, and other modules are required to occupy the module without fail, so when an idle module is searched, the module is bound firstly, whether the module is continuously searched downwards is considered, and if the module is occupied by other guns, the guns directly connected with the module cannot be started. Therefore, module searching and association firstly judge whether a direct connection module of the gun is idle, if the direct connection module is idle, the gun and the direct connection module are associated, when the direct connection module is online, whether the direct connection module is associated with the charging gun is judged, if the direct connection module is associated, other modules which can be associated at two sides of the direct connection module are continuously searched, if the direct connection module is not associated, searching of the associable module of the charging gun is finished, and the next gun in charging is polled.
Fig. 2 shows a specific method for searching other modules that can be associated with two sides of a direct connection module, which includes:
when the modules are on-line on both sides (left side and right side) of the direct connection module, judging which side has a large number of modules, judging whether the adjacent gun on the side with the large number of modules of the charging gun starts charging, if the charging is started, returning the adjacent module serial number on the opposite side of the side with the large number of modules of the direct connection module, and if not, returning the adjacent module serial number on the side with the large number of modules of the direct connection module;
when only one side of the two sides of the direct connection module is on line, returning the serial number of the adjacent module at the on-line side of the module of the direct connection module;
when no module is on line on both sides of the directly connected module, judging which side has more idle modules, judging whether the adjacent gun on the side with more idle modules of the charging gun starts charging, if the charging is started, returning the adjacent module serial number on the opposite side of the side with more idle modules of the directly connected module, and if not, returning the adjacent module serial number on the side with more idle modules of the directly connected module;
and associating the searched associable module with the charging gun, namely allocating the output power of the module to the charging gun.
When a plurality of charging guns exist, the modules which can be associated are searched for the charging guns in sequence according to the charging starting sequence, and a list of the modules which can be associated with the charging guns is obtained.
And when the other modules which can be associated with the charging gun cannot be searched according to the online conditions of the modules on the two sides of the directly connected module of the charging gun, finishing the search of the modules which can be associated with the charging gun.
When the output power of the searched associable module is distributed to the charging gun, the charging process shown in fig. 3 is adopted in this embodiment, which mainly includes the following steps:
all modules perform flow reduction output;
disconnecting the relays connected between the modules;
boosting all modules;
a relay connected between the modules is sucked;
module power is output to the charging gun.
The module power output control strategy is shown in fig. 4:
according to the industry standard, before charging, the charging gun needs to be subjected to insulation treatment.
When the rifle that charges does the insulation:
the output of the direct connection module of the charging gun is set according to the voltage and current required by the gun end, and other modules related to the charging gun are shut down;
charging gun charging stage:
the module current setting method comprises the following steps: the gun end required current is divided by the number of modules related to the charging gun to obtain average current, and the current of each module is set according to the average current obtained through calculation;
the module voltage setting method comprises the following steps: the direct connection module is set according to the voltage required by the gun end; and the non-direct connection module is arranged according to the output voltage of the direct connection module when the output voltage exceeds the direct connection module, and is arranged according to the required voltage of the gun end when the output voltage is consistent with the direct connection module.
Further preferably, when all modules associated with the charging gun have the same voltage or the modules with different voltages have no output, the relays between all modules under the charging gun are closed, and other charging guns are polled.
As shown in fig. 5, which is a block power output power relay closing strategy diagram, during power output, it is first determined whether voltages of all blocks under the charging gun with the current serial number are consistent, and if the blocks with consistent or inconsistent voltages are offline or have no output, the power relays between all blocks under the gun are closed, and then other guns are polled.
Claims (8)
1. An automatic power distribution method of a charging pile based on annular connection is characterized by comprising the following steps:
acquiring a serial number of a charging gun;
searching other modules which can be associated for the charging gun according to the module online condition of the two sides of the direct connection module of the charging gun;
associating the other module found with the charging gun;
distributing output power of a module associated with the charging gun to the charging gun.
2. The automatic power distribution method for charging piles based on circular connection as claimed in claim 1, wherein the finding of the module that can be associated for the charging gun according to the module online condition on both sides of the direct connection module of the charging gun comprises:
when the modules are on-line on both sides of the direct connection module, judging which side has a large number of modules, and judging whether the adjacent gun on the side with the large number of modules of the charging gun starts charging, if the charging is started, returning the serial number of the adjacent module on the opposite side of the side with the large number of modules of the direct connection module, otherwise, returning the serial number of the adjacent module on the side with the large number of modules of the direct connection module;
when only one side of the two sides of the direct connection module is on line, returning the serial number of the adjacent module at the on-line side of the module of the direct connection module;
when no module is on line on both sides of the directly connected module, judging which side has more idle modules, judging whether the adjacent gun on the side with more idle modules of the charging gun starts charging, if the charging is started, returning the adjacent module serial number on the opposite side of the side with more idle modules of the directly connected module, and if not, returning the adjacent module serial number on the side with more idle modules of the directly connected module;
the returned adjacent module serial number is the module serial number with which the charging gun can be associated.
3. The automatic power distribution method for the charging piles based on the circular connection as claimed in claim 1, wherein when there are a plurality of charging guns, the modules that can be associated are sequentially searched for each charging gun according to the charging starting sequence.
4. The automatic power distribution method for charging piles based on circular connection as claimed in claim 1, wherein before the step of searching for other modules that can be associated for the charging gun according to the online condition of the modules on both sides of the direct-connected module of the charging gun, the method further comprises:
according to the online condition of the direct connection module, when the direct connection module is idle, associating the direct connection module with the charging gun; and when the direct connection module is online, judging whether the direct connection module is associated with the charging gun, if so, continuously searching other modules which can be associated, and if not, finishing the searching of the associable modules of the charging gun.
5. The automatic power distribution method for charging piles based on circular connection as claimed in claim 1, wherein when no other module which can be associated with the charging gun can be found according to the on-line condition of the modules on the two sides of the direct connection module of the charging gun, the search for the module which can be associated with the charging gun is finished.
6. The automatic power distribution method for the looped-connection-based charging pile according to claim 1, wherein the distributing the output power of the module associated with the charging gun to the charging gun comprises:
all modules perform flow reduction output;
disconnecting the relays connected between the modules;
boosting all modules;
a relay connected between the modules is sucked;
module power is output to the charging gun.
7. The automatic power distribution method for charging piles based on circular connection of claim 6, wherein the outputting of module power to the charging gun comprises:
when the rifle that charges does the insulation:
the output of the direct connection module of the charging gun is set according to the voltage and current required by the gun end, and other modules related to the charging gun are shut down;
charging gun charging stage:
the module current setting method comprises the following steps: the gun end required current is divided by the number of modules related to the charging gun to obtain average current, and the current of each module is set according to the average current obtained through calculation;
the module voltage setting method comprises the following steps: the direct connection module is set according to the voltage required by the gun end; and the non-direct connection module is arranged according to the output voltage of the direct connection module when the output voltage exceeds the direct connection module, and is arranged according to the required voltage of the gun end when the output voltage is consistent with the direct connection module.
8. The automatic power distribution method for the charging piles based on the circular connection method of claim 6 or 7, wherein when all modules associated with the charging guns have the same voltage or the modules with different voltages have no output, the relays between all modules under the charging guns are closed to poll other charging guns.
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| CN202110518755.0A CN113043898A (en) | 2021-05-12 | 2021-05-12 | Charging pile automatic power distribution method based on annular connection method |
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| CN202110518755.0A CN113043898A (en) | 2021-05-12 | 2021-05-12 | Charging pile automatic power distribution method based on annular connection method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116494805A (en) * | 2023-06-21 | 2023-07-28 | 云南丁旺科技有限公司 | Charging device, charging system, and charging control method |
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Application publication date: 20210629 |