CN110544966A - charging pile automatic power distribution method based on linked list - Google Patents
charging pile automatic power distribution method based on linked list Download PDFInfo
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- CN110544966A CN110544966A CN201910676091.3A CN201910676091A CN110544966A CN 110544966 A CN110544966 A CN 110544966A CN 201910676091 A CN201910676091 A CN 201910676091A CN 110544966 A CN110544966 A CN 110544966A
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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
- B60L53/30—Constructional details of charging stations
- B60L53/31—Charging columns specially adapted for electric 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
- B60L53/60—Monitoring or controlling charging stations
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/007—Regulation of charging or discharging current or voltage
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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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- 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 relates to a linked list-based automatic power distribution method for a charging pile, which is characterized in that all charging modules in the charging pile are placed in an idle charging module linked list, and the total working time and the total working times of each charging module are counted before a starting instruction is received by the charging pile; sequencing according to the ascending mode of the total working time value to obtain a charging module sequence based on the sequencing of the working time, sequencing the charging module sequence according to the ascending mode of the total working time value to obtain a charging module sequence based on the sequencing of the working times, and taking the charging module positioned at the forefront end in the current charging module sequence as a preferred charging module to be charged outwards; and after the preferred charging module is closed, respectively updating the working conditions of the accumulated preferred charging module, and switching to the next automatic power distribution. Therefore, the factors of the total working time and the total working times which influence the efficiency and the service life of the charging modules are fully considered, each charging module is reasonably utilized, and the failure rate is reduced.
Description
Technical Field
The invention relates to the field of charging piles, in particular to a charging pile automatic power distribution method based on a linked list.
Background
Along with the continuous development of the electric automobile industry, the charging pile products meeting the charging requirements of electric automobiles are more and more. As the charging infrastructure of the electric automobile, the charging pile is used, and the charging times are increasingly frequent. Fill and to be provided with a plurality of modules that charge usually in the electric pile to adjust and launch different modules that charge according to external charging needs, thereby reach the distribution to filling electric pile self power.
for the power distribution of the charging pile, there are two main power distribution modes currently:
The first power distribution mode is that all charging modules in the charging pile are numbered according to the sequence of the charging modules, and then the charging is started to be charged outwards according to the sequence of the numbers of the charging modules from large to small or from small to large when the charging pile is used for charging outwards each time. However, since the charging modules are started according to the numbering sequence each time, the charging modules with the numbers in front of or behind are frequently started, and the charging modules with the numbers in the middle are hardly used, so that the charging modules in the same charging pile are unevenly used, the failure rate of the frequently started charging modules is increased, and the service life is shortened;
the second power distribution mode is to start all charging modules in the charging pile in a random manner, that is, each charging module may be enabled every time the charging pile is used for charging to the outside. However, the randomly enabled power distribution method only achieves relatively average use probability of each charging module, but is difficult to meet the charging occasion with low use frequency, and finally results in poor power distribution effect of the charging pile.
disclosure of Invention
The technical problem to be solved by the invention is to provide a charging pile automatic power distribution method based on a linked list aiming at the prior art.
The technical scheme adopted by the invention for solving the technical problems is as follows: a charging pile automatic power distribution method based on a linked list is characterized by comprising the following steps:
Step 1, constructing an idle charging module linked list aiming at a charging pile;
step 2, putting all charging modules in the charging pile into the idle charging module linked list;
step 3, respectively counting the working time length and the working times of each charging module in the idle charging module linked list to obtain the total working time length of each charging module and the total working times of each charging module;
Step 4, when the charging pile receives a starting charging instruction, sequencing all the charging modules in the step 3 according to the total working time length to obtain a charging module sequence based on the working time length sequencing;
Step 5, sorting all the charging modules in the charging module sequence based on the working time length sorting according to the total working times to obtain a charging module sequence based on the working time sorting; wherein, the sorting sequence in the step 5 and the sorting sequence in the step 4 are sorted according to the ascending order of the numerical values; or, the sorting order in the step 5 and the sorting order in the step 4 are sorted according to the descending order of the numerical values;
Step 6, taking the charging module which is sequenced at the end part in the charging module sequence based on the sequencing of the working times as a preferred charging module, and starting the preferred charging module to charge outwards; when the sorting sequence in the step 5 is sorted according to the ascending order of numerical values, the end part is the front end of the sequence; when the sorting order in the step 5 is sorted according to the descending order of numerical values, the end part is the tail end of the sequence;
and 7, when the charging pile receives a shutdown charging instruction, closing the preferred charging module in the outward charging process, respectively accumulating the working time of the preferred charging module from the starting time to the closing time and the working times to the total working time and the total working times of the preferred charging module, and turning to the step 2.
In an improvement, the method for automatic power distribution of the charging piles based on the linked list further comprises the following steps: and when the charging pile receives a starting charging instruction and detects that the total working time of any charging module reaches a preset working time threshold, removing any module from the current idle charging module linked list, taking the idle charging module linked list after removal processing as the latest idle charging module linked list, and turning to the step 2.
And the improvement is that the charging pile automatic power distribution method based on the linked list further comprises the following steps: and when detecting that the preferred module is in an outward charging state and the power of the charging pile is suddenly powered off, the charging pile removes the preferred module as a standby charging module from the original idle charging module linked list, and takes the removed idle charging module linked list as a latest idle charging module linked list, and the step 2 is switched to.
Further, the method for automatically distributing power of the charging piles based on the linked list further comprises the following steps:
Constructing a standby charging module linked list, and putting the standby charging module removed from the idle charging module linked list into the standby charging module linked list;
And when the number of the standby charging modules in the standby charging module linked list is equal to the number of all charging modules in the charging pile, putting all the standby charging modules into the idle charging module linked list again, and turning to the step 3.
in an improvement, the method for automatic power distribution of the charging piles based on the linked list further comprises the following steps:
Constructing a standby charging module linked list, and putting the standby charging module removed from the idle charging module linked list into the standby charging module linked list;
And when detecting that the quantity of the standby charging modules in the standby charging module linked list exceeds the preset alarm quantity, the charging pile starts an alarm prompt for replacing the charging modules for a charging pile manager.
Further, in the automatic power distribution method of the charging pile based on the linked list, when the number of the standby charging modules in the standby charging module linked list is equal to the number of all the charging modules in the charging pile, the charging pile commands each charging module to stop charging outwards and starts an alarm prompt for replacing all the charging modules for a charging pile manager.
Still further, the method for automatic power distribution of charging piles based on linked lists further comprises the following steps: when the charging pile does not detect that all the standby charging modules are completely replaced within the preset time period, the charging pile places the replaced charging modules into the idle charging module linked list, and then the charging pile goes to the step 3.
In an improvement, the method for automatic power distribution of the charging piles based on the linked list further comprises the following steps: and when detecting that the charging efficiency of any standby charging module is lower than a preset charging efficiency threshold value, removing the any standby charging module from the standby charging module linked list, taking the removed idle charging module linked list as a latest idle charging module linked list, and turning to the step 2.
further, in the automatic power distribution method for the charging piles based on the linked list, the preset charging efficiency threshold is 80%.
In the automatic power distribution method of the charging piles based on the linked list, the charging piles are direct current charging piles.
Compared with the prior art, the invention has the advantages that: all charging modules in the charging pile are placed into the constructed idle charging module linked list, and the total working time length and the corresponding total working times of each charging module in the idle charging module linked list are counted before the charging pile receives a starting instruction; sequencing all charging modules according to the ascending mode of the total working time value to obtain a charging module sequence based on working time sequencing, sequencing the charging module sequence based on working time sequencing according to the ascending mode of the total working time value again to obtain a charging module sequence based on working time sequencing, and finally taking the charging module positioned at the forefront end in the charging module sequence based on working time sequencing as a preferred charging module so as to charge outwards by the preferred charging module; after the preferred charging module is closed, the working conditions of the accumulated preferred charging module are updated respectively so as to transfer to the next automatic power distribution of the charging pile. The power of the charging pile is distributed in this way, two factors of total working time and total working times which influence the efficiency and the service life of the charging modules are fully considered, each charging module can be reasonably utilized, the charging efficiency is more average, the fault rate of the charging modules is reduced, and the service lives of the charging modules are prolonged.
drawings
Fig. 1 is a schematic flow chart of a charging pile automatic power distribution method based on a linked list in an embodiment of the present invention.
Detailed Description
the invention is described in further detail below with reference to the accompanying examples.
as shown in fig. 1, this embodiment provides a method for automatically allocating power to charging piles based on a linked list, where the method for automatically allocating power to charging piles based on a linked list includes the following steps:
step 1, constructing an idle charging module linked list aiming at a charging pile; the charging pile in the embodiment is a direct current charging pile;
Step 2, putting all charging modules in the charging pile into an idle charging module linked list;
For example, assume that the total number of charging modules in the charging pile is N, where N is 8; the ith charging module in the charging pile is marked as Ri, i is more than or equal to 1 and is less than or equal to N; then, the N charging modules are all put into the constructed idle charging module linked list;
Step 3, respectively counting the working time length and the working times of each charging module in the idle charging module linked list to obtain the total working time length of each charging module and the total working times of each charging module;
supposing that statistics is carried out, in an idle charging module linked list, the total working time length of a charging module Ri is marked as T (Ri), and the total working times of the charging module Ri is marked as C (Ri); the total working time and the total working times of the 8 charging modules in the idle charging module linked list are respectively shown in the following table 1:
TABLE 1
step 4, when the charging pile receives a starting charging instruction, sequencing all the charging modules in the step 3 according to the total working time length to obtain a charging module sequence based on the working time length sequencing; for example, in step 4 of this embodiment, the charging modules in step 3 are sorted in ascending order from small to large according to the total operating time length, and specifically, the sequence of the charging modules sorted based on the operating time length obtained after sorting is as shown in table 2 below:
TABLE 2
Step 5, sorting all charging modules in the charging module sequence based on the working duration sorting according to the total working times to obtain a charging module sequence based on the working time sorting; specifically, since the sorting in step 4 for the total worked time is performed in an ascending order from small to large of the total worked time, correspondingly, the sorting in step 5 is performed in an ascending order from small to large of the total worked time. The charging module sequence based on the working time sorting is obtained through the ascending processing of each charging module in the charging module sequence based on the working time sorting, and the conditions of the obtained charging module sequence based on the working time sorting are shown in the following table 3:
TABLE 3
wherein, the sorting sequence in the step 5 and the sorting sequence in the step 4 are sorted according to the ascending order of the numerical values; or, the sorting order in the step 5 and the sorting order in the step 4 are sorted according to the descending order of the numerical values;
Certainly, in step 4, if the charging modules in step 3 are sorted in a descending order from large to small according to the total working time length value, the sorting order in step 5 is sorted in a descending order from large to small according to the total working times;
Step 6, taking the charging module which is sequenced at the end part in the charging module sequence based on the sequencing of the working times as a preferred charging module, and starting the preferred charging module to charge outwards; for example, since the ascending order of the numerical values is adopted in step 5 of the present embodiment, the end-most part is the charging module at the top in the sequence of charging modules sorted based on the number of working times, that is, the charging module R8 is used as the preferred charging module, and the preferred charging module R8 starts the outward charging;
It should be noted that, if the sorting order in step 5 is sorted according to the descending order of the numerical values, the end part is the end of the sequence after the descending order processing, and the so-called preferred charging module is the endmost charging module;
and 7, when the charging pile receives a shutdown charging instruction, closing the preferred charging module in the outward charging process, respectively accumulating the working time of the preferred charging module from the starting time to the closing time and the working times to the total working time and the total working times of the preferred charging module, and turning to the step 2.
specifically, assuming that when the charging pile receives a shutdown charging instruction, the working time length of the charging module R8 serving as the preferred charging module from the starting time to the closing time in step 6 is 1h, after the charging module R8 closes the outward charging, the working time length 1h is accumulated to the total working time length of the charging module which is not selected as the preferred charging module, that is, the total working time length of the charging module R8 after closing the outward charging is 11h and the total working times are 31 times; then, the total operating time length 11h and the total number of times of operating 31 times are used as the updated operating conditions of the charging module R8, and the process proceeds to step 2.
Of course, if the charging pile receives the starting-up charging instruction and detects that the total working time of any charging module reaches the preset working time threshold, which indicates that the service life of any charging module is close to the end or the charging efficiency is very low, any charging module is removed from the current idle charging module linked list, the removed idle charging module linked list is used as the latest idle charging module linked list, and the step 2 is carried out. For example, if the charging pile receives a power-on instruction, eight charging modules R1 to R8 are included in the idle charging module linked list, and then it is detected that the total working time of the charging module R1 has reached the preset working time threshold, the charging module R1 is removed from the current idle charging module linked list, so that after the removal process, the current idle charging module linked list including only seven charging modules R2 to R8 is used as the latest idle charging module linked list, and the process proceeds to step 2.
In addition, if the charging pile detects that the preferred module is in an outward charging state and the power supply of the charging pile is suddenly powered off, the service life of the preferred module is determined to be damaged once, the charging pile removes the preferred module as a standby charging module from the original idle charging module linked list, removes the removed idle charging module linked list as the latest idle charging module linked list, and then the step 2 is carried out. The preferred charging module damaged due to sudden power failure is taken as a standby charging module to be removed from the original idle charging module linked list, so that the damage to the service life of the charging module caused by sudden power failure can be effectively avoided.
In addition, as an improvement measure for realizing cyclic utilization, the following measures are also taken in the charging pile automatic power distribution method based on the linked list:
constructing a standby charging module linked list, and putting the standby charging module removed from the idle charging module linked list into the standby charging module linked list;
and when the number of the standby charging modules in the standby charging module linked list is equal to the number of all the charging modules in the charging pile, putting all the standby charging modules into the idle charging module linked list again, realizing the recycling of each standby charging module, and turning to the step 3.
of course, based on the considerations of charging safety and efficiency, the following improvements may also be adopted: constructing a standby charging module linked list, and putting the standby charging module removed from the idle charging module linked list into the standby charging module linked list; and when detecting that the number of the standby charging modules in the standby charging module linked list exceeds the preset alarm number, indicating that the current charging efficiency in the charging pile is low and the charging safety risk exists, starting an alarm prompt for replacing the charging modules to a charging pile manager by the charging pile. In addition, when detecting that the quantity of the standby charging modules in the standby charging module linked list is equivalent to the quantity of all the charging modules in the charging pile, the efficiency of all the original charging modules in the charging pile is very low, and at the moment, the charging pile orders each charging module to stop charging outwards and starts an alarm prompt for replacing all the charging modules for a charging pile manager.
In order to timely master the replacement condition of each charging module in the charging pile, if the charging pile does not detect that all standby charging modules are completely replaced within a preset time period, the charging pile puts the replaced charging modules into an idle charging module linked list, and then the charging pile goes to step 3.
In order to maintain the external overall charging efficiency of the charging pile and meet the requirement of rapid charging of the electric vehicle, in the automatic power distribution formula of the charging pile based on the linked list according to the embodiment, when the charging efficiency of any one standby charging module is detected to be lower than the preset charging efficiency threshold value, any one standby charging module is removed from the standby charging module linked list, the removed idle charging module linked list is used as the latest idle charging module linked list, and the step 2 is carried out. For example, the preset charging efficiency threshold here is set to 80%.
Claims (10)
1. a charging pile automatic power distribution method based on a linked list is characterized by comprising the following steps:
Step 1, constructing an idle charging module linked list aiming at a charging pile;
step 2, putting all charging modules in the charging pile into the idle charging module linked list;
step 3, respectively counting the working time length and the working times of each charging module in the idle charging module linked list to obtain the total working time length of each charging module and the total working times of each charging module;
step 4, when the charging pile receives a starting charging instruction, sequencing all the charging modules in the step 3 according to the total working time length to obtain a charging module sequence based on the working time length sequencing;
Step 5, sorting all the charging modules in the charging module sequence based on the working time length sorting according to the total working times to obtain a charging module sequence based on the working time sorting; wherein, the sorting sequence in the step 5 and the sorting sequence in the step 4 are sorted according to the ascending order of the numerical values; or, the sorting order in the step 5 and the sorting order in the step 4 are sorted according to the descending order of the numerical values;
step 6, taking the charging module which is sequenced at the end part in the charging module sequence based on the sequencing of the working times as a preferred charging module, and starting the preferred charging module to charge outwards; when the sorting sequence in the step 5 is sorted according to the ascending order of numerical values, the end part is the front end of the sequence; when the sorting order in the step 5 is sorted according to the descending order of numerical values, the end part is the tail end of the sequence;
and 7, when the charging pile receives a shutdown charging instruction, closing the preferred charging module in the outward charging process, respectively accumulating the working time of the preferred charging module from the starting time to the closing time and the working times to the total working time and the total working times of the preferred charging module, and turning to the step 2.
2. The linked-list-based charging pile automatic power distribution method according to claim 1, further comprising: and when the charging pile receives a starting charging instruction and detects that the total working time of any charging module reaches a preset working time threshold, removing any module from the current idle charging module linked list, taking the idle charging module linked list after removal processing as the latest idle charging module linked list, and turning to the step 2.
3. The linked-list-based charging pile automatic power distribution method according to claim 1, further comprising: and when detecting that the preferred module is in an outward charging state and the power of the charging pile is suddenly powered off, the charging pile removes the preferred module as a standby charging module from the original idle charging module linked list, and takes the removed idle charging module linked list as a latest idle charging module linked list, and the step 2 is switched to.
4. the linked-list-based charging pile automatic power distribution method according to claim 3, further comprising:
constructing a standby charging module linked list, and putting the standby charging module removed from the idle charging module linked list into the standby charging module linked list;
And when the number of the standby charging modules in the standby charging module linked list is equal to the number of all charging modules in the charging pile, putting all the standby charging modules into the idle charging module linked list again, and turning to the step 3.
5. the linked-list-based charging pile automatic power distribution method according to claim 3, further comprising:
constructing a standby charging module linked list, and putting the standby charging module removed from the idle charging module linked list into the standby charging module linked list;
And when detecting that the quantity of the standby charging modules in the standby charging module linked list exceeds the preset alarm quantity, the charging pile starts an alarm prompt for replacing the charging modules for a charging pile manager.
6. the linked list-based charging pile automatic power distribution method according to claim 5, wherein when detecting that the number of the backup charging modules in the backup charging module linked list is equal to the number of all the charging modules in the charging pile, the charging pile instructs each charging module to stop charging outwards and starts an alarm prompt for replacing all the charging modules to the charging pile manager.
7. The linked-list-based charging pile automatic power distribution method according to claim 6, further comprising: when the charging pile does not detect that all the standby charging modules are completely replaced within the preset time period, the charging pile places the replaced charging modules into the idle charging module linked list, and then the charging pile goes to the step 3.
8. The linked-list-based charging pile automatic power distribution method according to claim 1, further comprising: and when detecting that the charging efficiency of any standby charging module is lower than a preset charging efficiency threshold value, removing the any standby charging module from the standby charging module linked list, taking the removed idle charging module linked list as a latest idle charging module linked list, and turning to the step 2.
9. The linked-list-based charging pile automatic power distribution method according to claim 8, wherein the preset charging efficiency threshold is 80%.
10. the automatic power distribution method for the linked-list-based charging piles according to any one of claims 1 to 9, wherein the charging piles are direct-current charging piles.
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| CN110979041A (en) * | 2020-03-04 | 2020-04-10 | 恒大智慧充电科技有限公司 | Charging system, charging method, computer device, and storage medium |
| CN111422095A (en) * | 2020-04-21 | 2020-07-17 | 南京能瑞电力科技有限公司 | Charging pile power distribution method and device, charging pile and storage medium |
| CN111682598A (en) * | 2020-04-27 | 2020-09-18 | 宁波三星智能电气有限公司 | Charging module starting method of charging pile |
| CN112910061A (en) * | 2021-04-07 | 2021-06-04 | 科世达(上海)机电有限公司 | Control method, device and medium for charging system load balancing |
| CN112977145A (en) * | 2021-03-08 | 2021-06-18 | 北京公共交通控股（集团）有限公司 | Fault early warning method and device for direct-current charging pile |
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| WO2023125617A1 (en) * | 2021-12-30 | 2023-07-06 | 长春捷翼汽车科技股份有限公司 | Charging system and charging method for electric vehicle, and electric vehicle |
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