CN115782667A - Method and system for distributing electric capacity for charging stack - Google Patents
Method and system for distributing electric capacity for charging stack Download PDFInfo
- Publication number
- CN115782667A CN115782667A CN202310077602.6A CN202310077602A CN115782667A CN 115782667 A CN115782667 A CN 115782667A CN 202310077602 A CN202310077602 A CN 202310077602A CN 115782667 A CN115782667 A CN 115782667A
- Authority
- CN
- China
- Prior art keywords
- power
- charging
- total
- control module
- terminal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- 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
Landscapes
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The application relates to a method and a system for distributing electric capacity for a charging pile. The method comprises the following steps: the system comprises a power supply, a power centralized control module and N charging stacks; the charging pile comprises a power cabinet and N charging terminals respectively connected with the power cabinet. The power cabinet acquires the total required power of the N charging terminals and reports the total required power to the power centralized control module; the power centralized control module acquires the maximum outputtable total power of the charging stack according to the total required power and the maximum input power of the power supply and transmits the maximum outputtable total power to the power cabinet; and the power cabinet acquires the maximum outputtable power of each charging terminal according to the maximum outputtable total power and the required power of each charging terminal. The output power of the charging stack is continuously adjusted according to the actual charging condition, so that the maximum input power of the power supply is reasonably distributed, the power is prevented from being idle or unreasonable, the utilization rate of the power supply is improved, and the charging speed of the charging stack is improved.
Description
Technical Field
The application relates to the technical field of charging piles, in particular to a method and a system for distributing the power capacity of a charging pile.
Background
At present, the technology of global electric vehicles is continuously improved, the energy density of electric vehicle batteries is continuously improved, the battery capacity is continuously improved, electric vehicle users are continuously increased, the quantity of charging piles and the output capacity of the charging piles of the original charging station cannot meet the charging requirement of the electric vehicles which are newly increased day by day. The charging pile is small in quantity, slow in charging speed and the like, and the charging pile is the most hopeful problem to be solved by most charging users. The deep reasons are considered, and mainly include that the cost for upgrading the capacity of the distribution network is too high, charging operators build charging piles under the limited capacity of the distribution network in a dilemma, and on the premise of pursuing quantity, the output capacity of the charging piles is low, the charging time of users is greatly prolonged, and the charging experience of the users is influenced; under the condition of pursuing the output capability of the charging pile, the quantity of the piles is small, the distribution network resources of the charging station are greatly wasted in the constant-voltage low-current charging stage of the electric automobile in the charging peak period, and other users who need charging urgently need to wait for the charging potential to be left for charging. Sufficient charging piles are built under limited distribution network capacity, the charging speed is effectively improved, the charging experience of a user is improved, and the problem needs to be solved urgently at present.
Disclosure of Invention
In view of the above, it is necessary to provide a method and a system for allocating electric capacity for a charging stack, which can reasonably allocate power and increase a charging speed.
A method for distributing electric capacity of charging piles comprises a power supply, a power centralized control module and N charging piles; the charging pile comprises a power cabinet and N charging terminals respectively connected with the power cabinet; the power cabinet is respectively connected with the power supply and the power centralized control module; the charging terminal is used for connecting a charging object;
the power cabinet acquires the total required power of the N charging terminals and reports the total required power to the power centralized control module;
the power centralized control module acquires the maximum outputtable total power of the charging stack according to the total required power and the maximum input power of the power supply and transmits the maximum outputtable total power to the power cabinet;
and the power cabinet acquires the maximum outputtable power of each charging terminal according to the maximum outputtable total power and the required power of each charging terminal.
In one embodiment, the step of obtaining the maximum outputtable total power of the charging stack by the power centralized control module according to the total required power and the maximum input power of the power supply includes the steps of:
the power centralized control module acquires the residual electric capacity of the power supply according to the total required power and the maximum input power of the power supply;
if the residual capacitance is greater than or equal to zero, the maximum outputtable total power is the total required power;
if the residual capacitance is smaller than zero, calculating the target power of the charging stacks according to a preset distribution proportion among the charging stacks; the maximum total output power corresponding to the charging stack with the total required power less than or equal to the target power is the total required power; the maximum total outputtable power corresponding to the charging stacks with the total required power larger than the target power is larger than or equal to the target power, and the maximum outputtable power is met according to the preset priority among the charging stacks or the magnitude sequence of the total required power.
In one embodiment, the power cabinet comprises a power control module and N rectifying modules connected with the power control module;
the power control module distributes a corresponding number of rectifier modules to the charging terminal according to the maximum output power and the power switching granularity capacity, and sets the output power of the corresponding number of rectifier modules as the maximum output power;
the power control module sends a power control instruction to the charging terminal to control the charging terminal to start output power.
In one embodiment, the power cabinet further comprises a power switching module connected with the power control module;
when the required power of the charging terminal is reduced, the power control module selects a target number of rectifier modules from the rectifier modules on the output link of the charging terminal to close, and the closed rectifier modules are separated from the output link of the charging terminal through the power switching module, and the separated rectifier modules are in an idle state;
when the required power of the charging terminal is increased, the power control module detects that the idle power of the charging stack is greater than zero and the rectifying modules in the idle state exist, allocates the corresponding power and the corresponding number of the rectifying modules in the idle state to the charging terminal according to the power increase value, and informs the power switching module to add the allocated rectifying modules in the idle state into an output link of the charging terminal; the idle power is the difference value between the maximum outputtable total power and the actual output total power of the charging stack.
In one embodiment, before distributing the corresponding power and the corresponding number of idle-state rectifier modules to the charging terminal according to the power increase value, the method includes the steps of:
the power control module controls to reduce the current output power on an output link of the charging terminal, and controls to increase the output voltage of the distributed idle rectifier module to the current bus voltage neighborhood; the current bus voltage neighborhood takes the bus voltage of an output link of the charging terminal as a center and 2 volts as a radius.
In one embodiment, the total actual output power is the sum of the actual output powers reported to the power control module by the charging terminal; or
The power cabinet also comprises a first electric meter connected with the power control module; the actual output total power is acquired by the power control module through the first ammeter.
In one embodiment, the system further comprises a remote control terminal; the remote control terminal is in communication connection with the power centralized control module;
the remote control terminal at least issues the following data to the power centralized control module: the method comprises the following steps of (1) maximum input total power of a power supply, a preset distribution proportion of a charging pile and a preset priority of the charging pile;
the power centralized control module at least reports the following data to the remote control terminal: the actual total output power of the charging stack and the actual total input power of the power supply system.
In one embodiment, the system further comprises a mobile terminal; the mobile terminal can be in communication connection with the charging terminal;
the mobile terminal sends a charging request instruction to the charging terminal, the charging terminal analyzes the charging request instruction to obtain the required power in the charging request instruction, and the charging terminal reports the required power to the power cabinet;
and in the charging process, the charging terminal sends the charging data to the mobile terminal.
In one embodiment, the power supply further comprises a second electric meter; the second electric meter is connected with the power centralized control module;
the second ammeter collects the total actual input power of the power supply and reports the total actual input power to the power centralized control module.
A charging pile power capacity distribution system comprises a power supply, a power centralized control module and N charging piles; the charging pile comprises a power cabinet and N charging terminals respectively connected with the power cabinet; the power cabinet is respectively connected with the power supply and the power centralized control module; the charging terminal is used for connecting a charging object.
One of the above technical solutions has the following advantages and beneficial effects:
in the method for distributing the electricity capacity of the charging pile provided by each embodiment of the application, a power cabinet acquires the total required power of N charging terminals and reports the total required power to a power centralized control module; the power centralized control module acquires the maximum outputtable total power of the charging stack according to the total required power and the maximum input power of the power supply and transmits the maximum outputtable total power to the power cabinet; and the power cabinet acquires the maximum outputtable power of each charging terminal according to the maximum outputtable total power and the required power of each charging terminal. The realization is through the total required power of the heap of charging and power supply's power supply ability (maximum input power), pile distribution maximum exportable total power for each charges, the power cabinet in the heap of charging distributes maximum exportable total power again, for each charging terminal distribution maximum exportable power, thereby realize according to the actual charging condition, constantly adjust the output of the heap of charging, thereby rationally distribute power supply's maximum input power, it is unreasonable to avoid power idle or distribute, promote the utilization ratio to power supply, thereby promote the charge speed of the heap of charging.
Drawings
Fig. 1 is a charging flow chart in the conventional art.
Fig. 2 is a schematic structural diagram of a method for allocating electric capacity for a charge stack in an embodiment of the present application.
Fig. 3 is a schematic flow chart of a method for allocating electric capacity for a charging stack in an embodiment of the present application.
Fig. 4 is a scheduling hierarchy diagram of a charging pile power capacity allocation method according to an embodiment of the present application.
Fig. 5 is a schematic structural diagram of a method for allocating electric capacity for a charge stack in an embodiment of the present application.
Fig. 6 is a control cross flow chart of the charge pile electricity capacity allocation method in the embodiment of the present application.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.
Traditional integral type fills electric pile power solidification, can not fully satisfy the vehicle that the power demand is greater than filling electric pile rated power and charge, can't adapt to the demand that battery technology developed rapidly. Simultaneously in order to ensure that battery electric quantity is full of, prevent to shorten battery life, dangerous state appears in the period of preventing to charge, fills electric pile and requires to implement accurate electric current and voltage control to the battery in charging process, at present, most car battery charge common process can be divided into three stages as shown in FIG. 1: voltage stabilizing in advance, constant current charge and constant voltage charge, wherein, in voltage stabilizing in advance and constant voltage charge stage, automobile charging power is general littleer, and the power that this two stages fill electric pile to occupy, other electric piles can't use, lead to filling the power of electric pile and can't obtain reasonable utilization.
Although the conventional charging pile technology solves some problems to a certain extent, because the rated power of each charging pile is generally larger (more than 300 kW), the capacities of the charging piles under the same power supply are independent, and the charging piles occupy partial capacity of the whole distribution network regardless of actual charging power consumption. In some common scenes, some charging piles occupy the power distribution capacity but do not actually use the capacity, and charging piles with higher utilization rate or charging demand under the same power supply can only use the preset capacity of the charging piles for the safe operation of a local power distribution network, so that the charging speed of a charging terminal under the charging piles is lower, and the distribution network capacity of the whole power supply is not reasonably distributed and utilized.
In order to solve the above problem, in one embodiment, as shown in fig. 2, a method for allocating electric capacity for the charging stacks 15 is provided, which includes a power supply 11, a power centralized control module 13, and N charging stacks 15. The power supply 11 may be connected to a power grid to obtain electric energy from the power grid. The power centralized control module 13 is used for controlling each charging stack 15. The charging stack 15 includes a power cabinet 151 and N charging terminals 153 respectively connected to the power cabinet 151, and specifically, the charging terminals 153 are connected to the power cabinet 151 through power lines and communication lines. In one example, the communication line is a CAN (Controller Area Network) bus. The power cabinets 151 are respectively connected to the power supply 11 and the power centralized control module 13, and in one example, the power cabinets 151 are connected to the power supply 11 through power lines and the power cabinets 151 are connected to the power centralized control module 13 through RS485 or ETH lines. The charging terminal 153 is used to connect to the charging target 19 and charge the charging target 19, and the charging target 19 may be an electric vehicle. It should be noted that the number of the charging stacks 15 is determined by the charging stack 15 actually connected. The power supply 11 is ac-input and ac-output. The power cabinet 151 is ac-input/output and dc-output. The charging terminal 153 has a dc input and a dc output.
In the charging process, as shown in fig. 3, the method for allocating the electric capacity of the charging stack 15 includes the following steps:
in step S310, the power cabinet 151 obtains the total required power of the N charging terminals 153, and reports the total required power to the power centralized control module 13. It should be noted that the power cabinet 151 acquires the total required power of the charging terminal 153 in real time, or the power cabinet 151 acquires the total required power of the charging terminal 153 periodically (for example, in a period of 1 minute, in a period of 5 minutes, or in a period of 10 minutes). In one example, after the charging terminals 153 are connected to the charging target 19, the BMS (Battery management System) System of the charging target 19 acquires the BMS charging demand power of the charging target 19, and the total demand power is the sum of the BMS charging demand powers reported by the charging terminals 153. In another example, the charging terminal 153 may be in communication connection with a mobile terminal (e.g., a smart phone), and the user sends a charging request instruction to the charging terminal 153 through the mobile terminal and sends a required power to the charging terminal 153, where the total required power is a sum of the required powers received by each charging terminal 153 and sent by the user through the mobile terminal.
In an example, the power cabinet 151 may report the total required power to the centralized power control module 13 in real time, or report the total required power to the centralized power control module 13 periodically (for example, in a period of 1 minute, a period of 5 minutes, or a period of 10 minutes). Meanwhile, the power cabinet 151 further obtains the total actual output power of the N charging terminals 153, and reports the total actual output power to the power centralized control module 13. In an example, the power cabinet 151 may also report the total actual output power to the centralized power control module 13 in real time, or may report the total actual output power to the centralized power control module 13 periodically (for example, in a period of 1 minute, a period of 5 minutes, or a period of 10 minutes).
In step S320, the power centralized control module 13 obtains the maximum total outputtable power of the charging stack 15 according to the total required power and the maximum input power of the power supply 11, and sends the maximum total outputtable power to the power cabinet 151. It should be noted that the maximum outputtable total power is the maximum power allocated to the charging terminal 153 according to the current power supply capability of the power supply 11. The maximum input power of the power supply 11 is mainly used for protecting the power supply, and when the sum of the maximum total power that can be output of each charging stack 15 exceeds the maximum input power of the power supply 11, the power centralized control module 13 limits the power output of the whole system by reducing the maximum total power that can be output of each charging stack 15 according to a certain proportion. The power loss during the system operation may cause the sum of the maximum outputtable total power of each charging stack 15 to exceed the maximum input power of the power supply 11.
Specifically, the step of obtaining the maximum total power that can be output by the charging stack 15 by the power centralized control module 13 according to the total required power and the maximum input power of the power supply 11 includes:
the power centralized control module 13 acquires the residual electric capacity of the power supply 11 according to the total required power and the maximum input power of the power supply 11; if the residual capacitance is greater than or equal to zero, the maximum outputtable total power is the total required power; if the residual capacitance is smaller than zero, calculating the target power of the charging stacks 15 according to the preset distribution proportion among the charging stacks 15; the maximum outputtable total power corresponding to the charging stack 15 with the total required power less than or equal to the target power is the total required power; the maximum total outputtable power corresponding to the charging stacks 15 with the total required power larger than the target power is larger than or equal to the target power, and is satisfied according to the preset priority among the charging stacks 15 or the magnitude sequence of the total required power.
It should be noted that the residual capacity of the power supply 11 is a difference between the maximum input power of the power supply 11 and the sum of the total required power reported by each power cabinet 151. When the residual electric capacity is greater than or equal to zero, it indicates that the current power supply capability of the power supply 11 can completely meet the charging requirements of the N charging stacks 15, and for this reason, the maximum outputtable total power of the charging stacks 15 is the total required power. When the residual electric capacity is smaller than zero, which indicates that the current power supply capacity of the power supply 11 cannot simultaneously meet the charging requirements of the N charging stacks 15, the total actual input power of the power supply 11 is divided according to a preset allocation proportion, and corresponding target power is allocated to each charging stack 15. Then, the target power and the total required power of each charging stack 15 are determined, and for the charging stack 15 with the total required power less than or equal to the target power, it is indicated that the power currently allocated to the charging stack 15 of this type can meet the requirement. For the charging stacks 15 with the total required power greater than the target power, it is indicated that the power currently allocated to the charging stack 15 of this type cannot completely meet the requirement, in this case, a maximum outputtable total power greater than the target power is set for the charging stack 15, and the charging requirement of the charging stack 15 of this type is met according to the preset priority among the charging stacks 15 or the magnitude sequence of the total required power, so as to improve the charging efficiency. It should be noted that the total required power may be in the order from large to small, or may be in the order from small to large. It should be noted that the sum of the total maximum power output of the charging stacks 15 cannot exceed the maximum input power of the power supply 11.
In step S330, the power cabinet 151 obtains the maximum outputtable power of each charging terminal 153 according to the maximum outputtable total power and the required power of each charging terminal 153. For example, the distribution is performed according to a preset distribution ratio of each charging terminal 153, and for example, the required power is sequentially satisfied in the order of the required power of the charging terminals 153 from large to small, and for example, the required power is sequentially satisfied according to a preset priority of the charging terminals 153. In one example, the remaining available power of the charging stack 15 may be calculated according to the maximum outputtable total power of the charging stack 15 issued by the power centralized control module 13 and the used power in the charging stack 15. And then, the maximum limit outputtable power of the charging terminal 153 is obtained according to the minimum of the required power reported by the charging pile and the residual available power of the charging pile 15.
To achieve power output, in one example, as shown in fig. 4, the power cabinet 151 includes a power control module 152 and N rectification modules 156 connected to the power control module 152. The power control module 152 is a control center of the power cabinet 151. The rectifier module 156 is used to convert ac to dc.
The power control module 152 allocates a corresponding number of rectifier modules 156 to the charging terminal 153 according to the maximum outputtable power and the power switching granularity capacity, and sets the output power of the corresponding number of rectifier modules 156 as the maximum outputtable power; the power control module 152 issues a power control instruction to the charging terminal 153, and controls the charging terminal 153 to start output power. The power distribution in the charging stack 15 has the minimum granularity, and even if the remaining power of the charging stack 15 has 50 kw, only one rectifying module 156 (rated power 30 kw) in the idle state has the maximum output power of the charging stack 15 of only 30 kw.
Specifically, the remaining available power of the charging stack 15 may be calculated according to the maximum outputtable total power of the charging stack 15 issued by the power centralized control module 13 and the used power in the charging stack 15. Then, according to the required power reported by the charging pile and the remaining available power of the charging pile 15, the maximum limit outputtable power of the charging terminal 153 is obtained by taking a small value between the number of the rectifier modules 156 in the idle state in the charging pile 15 and the maximum outputtable power.
In order to realize dynamic switching of power, the power is reasonably distributed. In one example, as shown in fig. 4, the power cabinet 151 further includes a power switching module 154 connected to the power control module 152.
When the required power of the charging terminal 153 decreases, the power control module 152 selects a target number of the rectifying modules 156 from the rectifying modules 156 on the output link of the charging terminal 153 to turn off, and the turned-off rectifying modules 156 are separated from the output link of the charging terminal 153 through the power switching module 154, so that the separated rectifying modules 156 are in an idle state.
When the required power of the charging terminal 153 increases, the power control module 152 detects that the idle power of the charging stack 15 is greater than zero and there are idle-state rectifier modules 156, allocates corresponding power and a corresponding number of idle-state rectifier modules 156 to the charging terminal 153 according to the power increase value, and notifies the power switching module 154 to add the allocated idle-state rectifier modules 156 to the output link of the charging terminal 153; the idle power is a difference value between the maximum outputtable total power and the actual output total power of the charging stack 15.
To ensure that the rectifier module 156 is safely added to the output link of the charging terminal 153, in one example, before allocating the corresponding power and the corresponding number of idle rectifier modules 156 to the charging terminal 153 according to the power increase value, the method includes the steps of:
the power control module 152 controls to reduce the current output power on the output link of the charging terminal 153, and the power control module 152 controls to increase the output voltage of the rectifier module 156 in the allocated idle state to the current bus voltage neighborhood; the current bus voltage neighborhood is centered around the bus voltage of the output link of the charge terminal 153, 2 volts being the radius. On one hand, the current output power on the output link of the charging terminal 153 is temporarily reduced, and on the other hand, the output voltage of the rectifying module 156 is increased, so that the safety in the switching process is ensured.
The following two ways to obtain the actual output total power are provided: first, the total actual output power is the sum of the actual output powers reported by the charging terminal 153 to the power control module 152. Secondly, as shown in fig. 4, the power cabinet 151 further includes a first electric meter 155 connected to the power control module 152, and the total power actually output is collected by the power control module through the first electric meter 155.
In order to realize remote monitoring of the charging pile 15 and facilitate centralized management of the charging pile 15, in one example, as shown in fig. 5, a remote control terminal 17 is further included; the remote control terminal 17 is connected in communication with the power centralized control module 13. The remote control terminal 17 at least issues the following data to the power centralized control module 13: the maximum input total power of the power supply 11, the preset distribution proportion of the charging pile 15 and the preset priority of the charging pile 15; the power centralized control module 13 reports at least the following data to the remote control terminal 17: the total actual output power of the charging stack 15, the total required power, and the total actual input power of the power supply system. The maximum input total power of the power supply 11, the preset distribution proportion of the charging stack 15, the preset priority of the charging stack 15 and other relevant configuration parameters can be transmitted to the power centralized control module 13 through the remote control terminal 17. Meanwhile, the remote control terminal 17 can show the use condition of each charging pile 15 to related workers, including showing the total actual output power of the charging pile 15 and the total actual input power of the power supply system, and can also show the total required power of the charging pile 15, the required power of the charging terminal 153, the charging duration of the charging pile 15, and the charging duration of the charging terminal 153.
In order to facilitate the user to quickly order, in one example, a mobile terminal is further included, and the mobile terminal can be in communication connection with the charging terminal 153. It should be noted that, an application corresponding to the charging terminal 153 is installed on the mobile terminal, the application is run to be in communication connection with the charging terminal 153, and the charging process can be displayed in real time by ordering the charging terminal 153 through the application. Specifically, the mobile terminal sends a charging request instruction to the charging terminal 153, the charging terminal 153 analyzes the charging request instruction to obtain the required power in the charging request instruction, and the charging terminal 153 reports the required power to the power cabinet 151; during the charging process, the charging terminal 153 transmits the charging data to the mobile terminal.
In one example, as shown in fig. 5, the power supply 11 further includes a second electric meter 111. The second electricity meter 111 is connected to the power centralized control module 13. The second electric meter 111 collects the total actual input power of the power supply 11, and reports the total actual input power to the power centralized control module 13. The second ammeter 111 is connected to the input side of the power supply source 11.
In the power consumption capacity allocation method for the charging stack 15 provided in each embodiment of the present application, the power cabinet 151 obtains the total required power of the N charging terminals 153, and reports the total required power to the power centralized control module 13; the power centralized control module 13 obtains the maximum outputtable total power of the charging stack 15 according to the total required power and the maximum input power of the power supply 11, and transmits the maximum outputtable total power to the power cabinet 151; the power cabinet 151 obtains the maximum outputtable power of each charging terminal 153 according to the maximum outputtable total power and the required power of each charging terminal 153. The total required power of the charging stacks 15 and the power supply capacity (maximum input power) of the power supply 11 are used for distributing the maximum outputable total power for each charging stack 15, the power cabinet 151 in the charging stack 15 distributes the maximum outputable total power again, and the maximum outputable power is distributed for each charging terminal 153, so that the output power of the charging stacks 15 is continuously adjusted according to the actual charging condition, the maximum input power of the power supply 11 is reasonably distributed, the power is prevented from being idle or unreasonable in distribution, the utilization rate of the power supply 11 is improved, and the charging speed of the charging stacks 15 is improved.
Power centralized control module 13 in this application, make the construction of 15 clusters of charging pile to greatly improve the utilization ratio of 11 distribution capacity of power supply, under the condition of power centralized control module 13 total dispatch placed in the middle, can build 15 total capacity of charging pile and 1.5's proportion of station distribution capacity, and the power supply 11 overload condition that probably appears when need not consider charging terminal 153 uses simultaneously, charging terminal 153's construction quantity will obtain the steady promotion, can greatly alleviate the difficult problem of electric automobile user charging.
The power sharing of the charging stacks 15 under the same power supply can greatly improve the adaptability of the charging terminal 153 to a high-power charging scene, and the charging power is distributed according to the charging requirement sent by the vehicle BMS; along with the improvement of the charging multiplying power of the battery and the increase of the charging power requirement, the power of the power stack can be expanded to meet the charging requirement, and the problem of slow charging of the electric automobile can be solved under the scheme.
In one embodiment, as shown in fig. 2 and 5, a system for distributing electric capacity for charging stacks 15 is provided, which includes a power supply 11, a power centralized control module 13, and N charging stacks 15; the charging stack 15 includes a power cabinet 151 and N charging terminals 153 respectively connected to the power cabinet 151; the power cabinet 151 is respectively connected with the power supply 11 and the power centralized control module 13; the charging terminal 153 is used to connect the charging object 19. The power capacity distribution system for the charging stack 15 further includes a remote control terminal 17 connected to the power centralized control module 13 and a mobile terminal connected to the charging terminal 153.
As shown in fig. 6, a control flow of the charge pile 15 power consumption capacity distribution system is shown, which specifically includes the following steps:
the power cabinet 151 periodically collects or counts the actual output power of the charging stack 15, counts the total required power of the charging stack 15, and reports the total required power to the power centralized control device.
The power centralized control device receives the actual output power and the total required power reported from the charging stack 15, and receives the current maximum outputtable capacity of the power supply 11 from the remote control terminal 17, the power distribution proportion of the charging stack 15, and the power distribution priority of the charging stack 15. And periodically collecting the maximum input power of the power supply system, counting the total actual output power of the charging stacks 15, calculating the residual capacity of the power supply system, configuring the maximum output total power of each charging stack 15 and issuing the maximum output total power to the charging stacks 15. Meanwhile, the power utilization information related to the power supply 11 and the charging pile 15 is reported to the cloud platform.
The remote control terminal 17 can configure the maximum usage capacity of the power supply 11 and the power distribution proportion and priority of each charging stack 15, and send the maximum usage capacity, the power distribution proportion and the priority to the power centralized control device, and simultaneously display information reported by the power centralized control device on a platform, so that the information is provided for a user to conveniently monitor the whole charging system.
The charging user clicks on the APP of the mobile terminal to start charging, and the charging instruction will issue the charging terminal 153 corresponding to the charging pile 15.
After receiving the charging start instruction, the charging terminal 153 establishes a charging order, and then initiates a charging start power request to the power cabinet 151 in the charging stack 15.
After receiving the charging power starting request of the charging terminal 153, the power cabinet 151 calculates the maximum output power of the charging terminal 153, allocates a rectifier module 156 group with the minimum power switching granularity to the charging terminal 153, sets the output parameters (i.e., the maximum output power) of the rectifier module 156 group, and issues an instruction to notify the charging terminal 153 of the power output that can be started.
After receiving the power output instruction from the power cabinet 151, the charging terminal 153 starts the charging process, controls power output, and reports the power output information to the APP of the mobile terminal.
The charging demand power is reported to the power cabinet 151 periodically in the power output process of the charging terminal 153, the power control module 152 in the power cabinet 151 calculates the maximum outputtable rate of the charging terminal 153 in real time according to the demand power of the charging terminal 153 and the maximum outputtable total power of the charging stack 15, and dynamically allocates the rectifying module 156 for the charging terminal 153 and adjusts the power output.
When the power required by the charging terminal 153 decreases, on the premise that the charging terminal 153 still can meet the charging requirement after releasing the target number of the rectifier modules 156, the power control module 152 in the power cabinet 151 picks out the target number of the rectifier modules 156 from the combination of the rectifier modules 156 in the output link of the charging terminal 153 and closes the output, and notifies the power switching module 154 to separate the closed rectifier modules 156 from the output link of the charging terminal 153, and the rectifier module 156 group separated from the output link of the charging terminal 153 is in an idle state.
When the required power of the charging terminal 153 is increased, the charging terminal 153 needs to add a target number of rectifier modules 156 to meet the charging requirement, the power control module 152 in the power cabinet 151 detects whether there are idle power (a difference between the maximum total output power of the charging stack 15 and the actual total output power of the charging stack 15) and idle rectifier modules 156 (rectifier modules 156 not in any power output link) in the charging stack 15, and allocates the idle rectifier modules 156 and the idle power to the current charging pile as much as possible to meet the current charging power requirement.
Before the rectifier modules 156 are added to the power link during the charging and outputting process of the charging terminal 153, the output power of the current link needs to be reduced as much as possible in advance, and the output voltage of the rectifier modules 156, which needs to be added in the target number, is boosted to the bus voltage of the current power link. When the voltage difference between the output voltage of the target number of rectifier modules 156 and the bus voltage on the output link of the charging terminal 153 is controlled within ± 2V, the power control module 152 in the power cabinet 151 notifies the power switching module 154 to add the target number of modules to the power output link of the current charging terminal 153.
It should be understood that, although the steps in the flowchart of fig. 3 are shown in order as indicated by the arrows, the steps are not necessarily performed in order as indicated by the arrows. The steps are not performed in the exact order shown and described, and may be performed in other orders, unless explicitly stated otherwise. Moreover, at least a portion of the steps in fig. 3 may include multiple sub-steps or multiple stages that are not necessarily performed at the same time, but may be performed at different times, and the order of performance of the sub-steps or stages is not necessarily sequential, but may be performed in turn or alternately with other steps or at least a portion of the sub-steps or stages of other steps.
The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the claims. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. The method for distributing the electricity capacity of the charging stacks is characterized by comprising a power supply, a power centralized control module and N charging stacks; the charging pile comprises a power cabinet and N charging terminals which are respectively connected with the power cabinet; the power cabinet is respectively connected with the power supply and the power centralized control module; the charging terminal is used for connecting a charging object;
the power cabinet acquires the total required power of the N charging terminals and reports the total required power to the power centralized control module;
the power centralized control module acquires the maximum outputtable total power of the charging stack according to the total required power and the maximum input power of the power supply and transmits the maximum outputtable total power to the power cabinet;
and the power cabinet acquires the maximum output power of each charging terminal according to the maximum output total power and the required power of each charging terminal.
2. The method for distributing the electric capacity of the charging stacks according to claim 1, wherein the step of obtaining the maximum total power that can be output by the charging stacks by the power centralized control module according to the total required power and the maximum input power of the power supply source comprises the steps of:
the power centralized control module acquires the residual electric capacity of the power supply according to the total required power and the maximum input power of the power supply;
if the residual electric capacity is greater than or equal to zero, the maximum outputtable total power is the total required power;
if the residual electric capacity is smaller than zero, calculating the target power of the charging stacks according to a preset distribution proportion among the charging stacks; the maximum outputtable total power corresponding to the charging stack with the total required power smaller than or equal to the target power is the total required power; the maximum outputtable total power corresponding to the charging stacks with the total required power larger than the target power is larger than or equal to the target power and is met according to the preset priority among the charging stacks or the magnitude sequence of the total required power.
3. The method for distributing the power capacity of the charging pile according to claim 1, wherein the power cabinet comprises a power control module and N rectifying modules connected with the power control module;
the power control module distributes a corresponding number of the rectifier modules to the charging terminal according to the maximum output power and the power switching granularity capacity, and sets the output power of the rectifier modules in the corresponding number as the maximum output power;
and the power control module sends a power control instruction to the charging terminal to control the charging terminal to start output power.
4. The method for distributing the electricity capacity of the charging piles according to claim 3, wherein the power cabinet further comprises a power switching module connected with the power control module;
when the required power of the charging terminal is reduced, the power control module selects a target number of the rectification modules from the rectification modules on the output link of the charging terminal to close, and the closed rectification modules are separated from the output link of the charging terminal through the power switching module, and the separated rectification modules are in an idle state;
when the required power of the charging terminal is increased, the power control module detects that the idle power of the charging stack is greater than zero and the rectifying modules in the idle state exist, allocates corresponding power and a corresponding number of the rectifying modules in the idle state to the charging terminal according to a power increase value, and informs the power switching module to add the allocated rectifying modules in the idle state into an output link of the charging terminal; the idle power is the difference value between the maximum outputtable total power and the actual output total power of the charging stack.
5. The method for allocating electric capacity for a charge pile according to claim 4, wherein before allocating corresponding power and a corresponding number of idle rectifier modules to the charge terminal according to the power increment value, the method comprises the following steps:
the power control module controls to reduce the current output power on an output link of the charging terminal, and controls to increase the output voltage of the rectifier module in the distributed idle state to a current bus voltage neighborhood; the current bus voltage neighborhood takes the bus voltage of an output link of the charging terminal as a center and 2V as a radius.
6. The method according to claim 4, wherein the total actual output power is the sum of the actual output powers reported by the charging terminal to the power control module; or
The power cabinet also comprises a first electric meter connected with the power control module; the actual output total power is acquired by the power control module through the first ammeter.
7. The charge stack capacity allocation method according to any one of claims 1 to 6, further comprising a remote control terminal; the remote control terminal is in communication connection with the power centralized control module;
the remote control terminal at least issues the following data to the power centralized control module: the maximum input total power of the power supply, the preset distribution proportion of the charging stacks and the preset priority of the charging stacks;
the power centralized control module at least reports the following data to the remote control terminal: the actual total output power of the charging stack and the actual total input power of the power supply system.
8. The method for allocating electric capacity for a charge pile according to claim 7, further comprising a mobile terminal; the mobile terminal can be in communication connection with the charging terminal;
the mobile terminal sends a charging request instruction to the charging terminal, the charging terminal analyzes the charging request instruction to obtain the required power in the charging request instruction, and the charging terminal reports the required power to the power cabinet;
in the charging process, the charging terminal sends charging data to the mobile terminal.
9. The method of allocating electric capacity for a charged pile according to claim 8, wherein the power supply further comprises a second electric meter; the second ammeter is connected with the power centralized control module;
and the second ammeter collects the total actual input power of the power supply and reports the total actual input power to the power centralized control module.
10. The system for distributing the electric capacity for the charging stacks is characterized by comprising a power supply, a power centralized control module and N charging stacks; the charging pile comprises a power cabinet and N charging terminals respectively connected with the power cabinet; the power cabinet is respectively connected with the power supply and the power centralized control module; the charging terminal is used for connecting a charging object.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310077602.6A CN115782667B (en) | 2023-02-08 | 2023-02-08 | Method and system for distributing capacitance for charging pile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310077602.6A CN115782667B (en) | 2023-02-08 | 2023-02-08 | Method and system for distributing capacitance for charging pile |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115782667A true CN115782667A (en) | 2023-03-14 |
| CN115782667B CN115782667B (en) | 2023-04-28 |
Family
ID=85430350
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310077602.6A Active CN115782667B (en) | 2023-02-08 | 2023-02-08 | Method and system for distributing capacitance for charging pile |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115782667B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116187589A (en) * | 2023-04-25 | 2023-05-30 | 广东工业大学 | Charging station constant volume method and system |
| CN117220376A (en) * | 2023-09-15 | 2023-12-12 | 小米汽车科技有限公司 | Charging method, device, adapter and storage medium |
| CN117656917A (en) * | 2024-02-02 | 2024-03-08 | 深圳市永联科技股份有限公司 | Power distribution method of charging pile and related device |
Citations (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20150180230A1 (en) * | 2013-12-23 | 2015-06-25 | Abb Technology Ag | Methods, systems, and computer readable media for managing the distribution of power from a photovoltaic source in a multiple-floor building |
| CN205489720U (en) * | 2016-02-19 | 2016-08-17 | 英飞特电子（杭州）股份有限公司 | New energy automobile's charging system |
| CN106696748A (en) * | 2017-01-25 | 2017-05-24 | 华为技术有限公司 | Charging pile system |
| KR101736116B1 (en) * | 2016-03-22 | 2017-05-29 | 현대자동차주식회사 | A vehicle, a system for controlling the vehicle, a display apparatus, a terminal apparatus and a method for controlling the vehicle |
| KR20180041965A (en) * | 2016-10-17 | 2018-04-25 | (주)모던텍 | Charging apparatus for vehicles |
| CN207984589U (en) * | 2018-01-05 | 2018-10-19 | 郑州宇通客车股份有限公司 | Matrixing network formula charger system |
| CN108988430A (en) * | 2018-08-07 | 2018-12-11 | 宁波智果科技咨询服务有限公司 | A kind of charging pile system based on overall power coordinated control |
| CN109177772A (en) * | 2018-10-12 | 2019-01-11 | 博众精工科技股份有限公司 | A kind of power shared system and control method for electric charging station |
| CN109455106A (en) * | 2018-10-17 | 2019-03-12 | 国网浙江省电力有限公司杭州供电公司 | A kind of electric car Intelligent charging station |
| CN109818354A (en) * | 2019-04-15 | 2019-05-28 | 国网重庆市电力公司电力科学研究院 | A kind of charging pile team control terminal control method and team control terminal |
| JP2019103263A (en) * | 2017-12-04 | 2019-06-24 | 株式会社豊田自動織機 | Charging device |
| CN110303929A (en) * | 2019-06-29 | 2019-10-08 | 华为技术有限公司 | The management method and charging pile system of charging pile system |
| CN110588396A (en) * | 2019-08-21 | 2019-12-20 | 深圳市海鹏信新能源有限公司 | Electric automobile charging stack system |
| CN111845423A (en) * | 2019-04-30 | 2020-10-30 | 天津平高智能电气有限公司 | Charging power distribution method and system of charging pile |
| EP3790148A1 (en) * | 2019-09-03 | 2021-03-10 | Universität der Bundeswehr München | Charging system for electric vehicles |
| US20210155107A1 (en) * | 2019-11-22 | 2021-05-27 | Delta Electronics (Shanghai) Co., Ltd. | Power distribution system and method for charging multiple electric vehicles |
| WO2021162572A1 (en) * | 2020-02-12 | 2021-08-19 | Siemens Aktiengesellschaft | A smart power splitter and a method for providing power with use of the smart power splitter |
| US20210291694A1 (en) * | 2020-03-23 | 2021-09-23 | King Abdulaziz University | System and method for charging electric vehicles at smart parking lots |
| CN114734855A (en) * | 2022-04-22 | 2022-07-12 | 永联智慧能源科技(常熟)有限公司 | Charging power scheduling method and device for matrix type flexible charging pile |
| US20220337071A1 (en) * | 2021-04-16 | 2022-10-20 | Sungrow Power Supply Co., Ltd. | Integrated charging device, charging pile and method for controlling charging pile |
| CN115224711A (en) * | 2022-09-20 | 2022-10-21 | 云南丁旺科技有限公司 | Intelligent charging energy router cascade system and cascade control method |
-
2023
- 2023-02-08 CN CN202310077602.6A patent/CN115782667B/en active Active
Patent Citations (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20150180230A1 (en) * | 2013-12-23 | 2015-06-25 | Abb Technology Ag | Methods, systems, and computer readable media for managing the distribution of power from a photovoltaic source in a multiple-floor building |
| CN205489720U (en) * | 2016-02-19 | 2016-08-17 | 英飞特电子（杭州）股份有限公司 | New energy automobile's charging system |
| KR101736116B1 (en) * | 2016-03-22 | 2017-05-29 | 현대자동차주식회사 | A vehicle, a system for controlling the vehicle, a display apparatus, a terminal apparatus and a method for controlling the vehicle |
| KR20180041965A (en) * | 2016-10-17 | 2018-04-25 | (주)모던텍 | Charging apparatus for vehicles |
| CN106696748A (en) * | 2017-01-25 | 2017-05-24 | 华为技术有限公司 | Charging pile system |
| JP2019103263A (en) * | 2017-12-04 | 2019-06-24 | 株式会社豊田自動織機 | Charging device |
| CN207984589U (en) * | 2018-01-05 | 2018-10-19 | 郑州宇通客车股份有限公司 | Matrixing network formula charger system |
| CN108988430A (en) * | 2018-08-07 | 2018-12-11 | 宁波智果科技咨询服务有限公司 | A kind of charging pile system based on overall power coordinated control |
| CN109177772A (en) * | 2018-10-12 | 2019-01-11 | 博众精工科技股份有限公司 | A kind of power shared system and control method for electric charging station |
| CN109455106A (en) * | 2018-10-17 | 2019-03-12 | 国网浙江省电力有限公司杭州供电公司 | A kind of electric car Intelligent charging station |
| CN109818354A (en) * | 2019-04-15 | 2019-05-28 | 国网重庆市电力公司电力科学研究院 | A kind of charging pile team control terminal control method and team control terminal |
| CN111845423A (en) * | 2019-04-30 | 2020-10-30 | 天津平高智能电气有限公司 | Charging power distribution method and system of charging pile |
| CN110303929A (en) * | 2019-06-29 | 2019-10-08 | 华为技术有限公司 | The management method and charging pile system of charging pile system |
| CN110588396A (en) * | 2019-08-21 | 2019-12-20 | 深圳市海鹏信新能源有限公司 | Electric automobile charging stack system |
| EP3790148A1 (en) * | 2019-09-03 | 2021-03-10 | Universität der Bundeswehr München | Charging system for electric vehicles |
| US20210155107A1 (en) * | 2019-11-22 | 2021-05-27 | Delta Electronics (Shanghai) Co., Ltd. | Power distribution system and method for charging multiple electric vehicles |
| WO2021162572A1 (en) * | 2020-02-12 | 2021-08-19 | Siemens Aktiengesellschaft | A smart power splitter and a method for providing power with use of the smart power splitter |
| US20210291694A1 (en) * | 2020-03-23 | 2021-09-23 | King Abdulaziz University | System and method for charging electric vehicles at smart parking lots |
| US20220337071A1 (en) * | 2021-04-16 | 2022-10-20 | Sungrow Power Supply Co., Ltd. | Integrated charging device, charging pile and method for controlling charging pile |
| CN114734855A (en) * | 2022-04-22 | 2022-07-12 | 永联智慧能源科技(常熟)有限公司 | Charging power scheduling method and device for matrix type flexible charging pile |
| CN115224711A (en) * | 2022-09-20 | 2022-10-21 | 云南丁旺科技有限公司 | Intelligent charging energy router cascade system and cascade control method |
Non-Patent Citations (5)
| Title |
|---|
| "a flexible distributed framework for realising electric and plug-in hybrid vehicle charging policies" * |
| 和敬涵;谢毓毓;叶豪东;王小君;李智诚;: "电动汽车充电模式对主动配电网的影响" * |
| 朱阳: "基于柔性充电的集装箱式充 电站***设计与研究" * |
| 覃见吉;: "一种分体式多枪柔性充电堆直流充电机的设计与应用研究" * |
| 高德欣;孙亚光;: "电动汽车大功率充电堆集中监控与运营***" * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116187589A (en) * | 2023-04-25 | 2023-05-30 | 广东工业大学 | Charging station constant volume method and system |
| CN116187589B (en) * | 2023-04-25 | 2023-09-29 | 广东工业大学 | Charging station constant volume method and system |
| CN117220376A (en) * | 2023-09-15 | 2023-12-12 | 小米汽车科技有限公司 | Charging method, device, adapter and storage medium |
| CN117220376B (en) * | 2023-09-15 | 2024-06-04 | 小米汽车科技有限公司 | Charging method, device, adapter and storage medium |
| CN117656917A (en) * | 2024-02-02 | 2024-03-08 | 深圳市永联科技股份有限公司 | Power distribution method of charging pile and related device |
| CN117656917B (en) * | 2024-02-02 | 2024-04-19 | 深圳市永联科技股份有限公司 | Power distribution method of charging pile and related device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN115782667B (en) | 2023-04-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106130137B (en) | A kind of electric vehicle coordinates charging system and its self-decision method | |
| CN115782667A (en) | Method and system for distributing electric capacity for charging stack | |
| CN102055215B (en) | Control method and operation monitoring system of charging and exchanging station of electric vehicle | |
| EP2568561B1 (en) | Controller and method of controlling a power system | |
| US10305280B2 (en) | Energy store for a photovoltaic system, energy storage power plant, control device, and method for operating an energy store | |
| CN102195344B (en) | Multi-energy supply communication power supply and control method thereof | |
| CN112519620B (en) | Flexible charging system for electric automobile and control method | |
| CN112234638B (en) | Power grid peak regulation system and method based on load side intelligent charging pile cluster control | |
| WO2017148408A1 (en) | Energy storage charging system | |
| KR101769776B1 (en) | System and method for Frequency Control | |
| CN104241720A (en) | Charge control method for electromobile direct-current rapid charging station in microgrid | |
| CN109193723B (en) | Combined base station backup energy storage power supply and control method | |
| CN112909971A (en) | Light storage and charging system and operation method | |
| CN102655330A (en) | New energy resource electric power system and method thereof | |
| CN111546942A (en) | Low-voltage direct-current charging and discharging source management system of high-voltage power battery in communication base station | |
| CN112688347A (en) | System and method for smoothing load fluctuation of power grid | |
| CN114512988B (en) | Regulation and control method and device based on low-voltage distribution area flexible-direct interconnection | |
| CN202004468U (en) | New-energy power system | |
| CN109532557A (en) | A kind of charging system for electric automobile and control method | |
| CN110165686B (en) | Charging device for electric automobile | |
| CN116455045A (en) | Base station light reserve power supply guarantee system based on lead-acid storage battery | |
| CN114851886A (en) | Electric vehicle charging system and method | |
| CN107221943A (en) | A kind of charging management system for electric automobile and method for coordinating control based on region distribution | |
| CN111523708B (en) | Energy optimization management method based on price type demand response | |
| CN113787917A (en) | Power distribution regulation and control method for same-network-segment double-source trolley bus |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |