CN113370818B - Fill electric pile and system based on power regulation and control - Google Patents
Fill electric pile and system based on power regulation and control Download PDFInfo
- Publication number
- CN113370818B CN113370818B CN202110677626.6A CN202110677626A CN113370818B CN 113370818 B CN113370818 B CN 113370818B CN 202110677626 A CN202110677626 A CN 202110677626A CN 113370818 B CN113370818 B CN 113370818B
- Authority
- CN
- China
- Prior art keywords
- charging
- voltage
- speed
- switch
- output
- 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.)
- Active
Links
Images
Classifications
-
- 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
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
- B60L53/60—Monitoring or controlling charging stations
- B60L53/62—Monitoring or controlling charging stations in response to charging parameters, e.g. current, voltage or electrical charge
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
- B60L53/60—Monitoring or controlling charging stations
- B60L53/63—Monitoring or controlling charging stations in response to network capacity
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
- B60L53/60—Monitoring or controlling charging stations
- B60L53/64—Optimising energy costs, e.g. responding to electricity rates
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
- B60L53/60—Monitoring or controlling charging stations
- B60L53/66—Data transfer between charging stations and vehicles
- B60L53/665—Methods related to measuring, billing or payment
-
- 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
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
-
- 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
-
- 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
- H02J7/00712—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters
-
- 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
Abstract
The invention relates to the technical field of electric automobile charging, in particular to a charging pile system based on power regulation. Fill electric pile and be equipped with high voltage output module and low pressure output module. The output voltage of the low-voltage output module is greater than the rated voltage of the electric vehicle battery, and the output voltage of the high-voltage output module is greater than the voltage of the low-voltage output module, and the output power of the charging pile is controlled by switching the high-voltage output and the low-voltage output. The charging pile system can ensure that the operating power of the transformer of the charging station is within the rated power so as to achieve the function of protecting the transformation by applying the charging pile. The invention can automatically set the charging rate according to the needs of users, and can give preferential cost for long-time charging. The charging requirement is adjusted by increasing the cost for the user who needs quick charging. Meanwhile, the output power and the charging speed of the charging pile can be adjusted according to the load, so that the transformer can be guaranteed to operate within a normal safe voltage range, and the damage to the transformer is reduced.
Description
Technical Field
The invention relates to the technical field of electric automobile charging, in particular to a charging pile system based on power regulation.
Background
Charging station among the prior art generally is provided with a plurality of electric pile that fill, charging station is equipped with dedicated transformer, there is not comparatively perfect standard to the design of charging station at present, the majority adopts the resident design standard that becomes the distribution, building electrical design standard and become the distribution design standard, because the needs coefficient isoparametric of adoption is non-uniform, be not conform to with the demand of reality simultaneously, along with the popularization of electric motor car simultaneously, electric automobile's the volume of preserving is more and more, consequently there is all transformer that fill electric pile simultaneous operation in the transformer of design operation and appears the running state of overload easily. The long-time overload operation of the transformer easily causes the damage of the transformer and simultaneously easily causes accidents.
In addition, the current charging requirements are different from person to person, some people need to charge quickly, some people need to charge slowly, and the current technology does not support the regulation of the charging rate, and meanwhile, the charging cost is correspondingly regulated according to the charging rate. Therefore, it is an urgent requirement to design a charging pile capable of adjusting charging power.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the utility model provides a fill electric pile system based on power regulation and control with can adjust the speed of charging, prevent that transformer from transshipping.
The technical scheme of the technical problem to be solved by the invention is as follows: the utility model provides a fill electric pile with adjustable output which characterized in that: the charging pile is provided with a high-voltage output module and a low-voltage output module, and the output voltage of the low-voltage output module is greater than the rated voltage of the battery of the electric vehicle; the output voltage of the high-voltage output module is greater than the voltage of the low-voltage output module; a charging speed selection system is arranged on a human-computer interface of the charging pile and used for acquiring the charging intention of a user; fill electric pile and be equipped with output switched systems, output switched systems includes: the quick charging switch is electrically connected with the high-voltage output module; the slow charging switch is electrically connected with the low-voltage output module; the charging interface is electrically connected with the output ends of the fast charging switch and the slow charging switch; the switching controller is electrically connected with the fast charging switch and the slow charging switch; the quick charging switch and the slow charging switch are alternately switched on and off, and the lower the charging speed in unit time is, the smaller the proportion of the on-time of the quick charging switch is; in a full-speed charging mode, the fast charging switch is always in a closed state, and the slow charging switch is always in an open state; and in the slowest charging mode, the fast charging switch is always in an off state, and the slow charging switch is always in an on state.
Preferably, the range of the output voltage of the low-voltage output module being greater than the rated voltage of the electric vehicle battery is 0.1-0.5V.
Preferably, when the speed adjusting value is zero, the ratio of the conduction time of the fast charge switch is 50%.
Preferably, a voltage regulating module is connected in series between the fast charging switch and the high voltage output module, and the voltage regulating module is electrically connected with the switching controller; when the high-voltage output is switched to the low-voltage output, the switching controller adjusts the voltage regulating module to enable the voltage at the output end of the fast charging switch to be consistent with the voltage of the low-voltage output module, then the low-voltage output module is closed first, the fast charging switch is disconnected, and the state of the voltage regulating module is kept; and then, when the low-voltage output is switched to the high-voltage output, the switching controller firstly closes the fast charging switch and opens the slow charging switch, and finally the switching controller regulates the partial pressure of the voltage regulating module to be zero.
Fill electric pile system based on power regulation and control, including fill electric pile, change distribution system and central control system with adjustable a plurality of outputs, central control system control becomes distribution system and fills electric pile, change distribution system with fill electric pile electrical connection, its characterized in that: the central control system is provided with a transformer output power acquisition device; the method for ensuring the safe operation of the system comprises the following steps: the transformer output power acquisition device acquires the output power of the transformer and judges whether the output power of the transformer reaches an upper limit value; when the output power of the transformer is larger than the set upper limit value, the central control system sends a power regulation and control instruction to the selected controller of the charging pile through the power reduction coordination module; and after receiving the power regulation instruction, the controller of the charging pile reduces the ratio of the conduction time of the quick charging switch.
Preferably, the method for selecting the charging pile by the power-down coordination module comprises the following steps: determining the number of charging piles for selecting and adjusting power output according to the value exceeding the limit value; acquiring the number of a charging pile which selects a non-full-speed charging mode and a non-slowest-speed charging mode from the charging piles; and randomly selecting charging piles in all the numbers according to the selected quantity.
Or the like, or, alternatively,
the method for selecting the charging pile by the power reduction coordination module comprises the following steps: acquiring the number of a charging pile with a full-speed charging mode; and the duty ratio of the conduction time of the quick charging switch of the charging pile in the full-speed charging mode is reduced in sequence in a circulating manner.
Or the like, or a combination thereof,
the method for selecting the charging pile by the power reduction coordination module comprises the following steps: and the duty ratio of the conduction time of the quick charging switches of all the charging piles is reduced in sequence in a circulating manner.
Preferably, when the user selects the full-speed charging mode, the controller of the charging pile sends a full-speed charging application to the central control system; after receiving the application, the central control system calculates available output power, wherein the available output power is the difference value between the existing output power and the output power of the upper limit value; judging whether the available output power meets two full-speed charging modes; if the charging requirement is met, issuing a full-speed charging permission instruction to the charging pile; and if not, issuing a full-speed charging forbidding instruction to the charging pile.
Preferably, after the central control system issues a full-speed charging prohibition instruction to the charging pile, the central control system issues a suggested charging speed.
Preferably, a new charging standard is determined according to the adjusted on-time ratio of the fast charging switch.
Preferably, the charging cost is the sum of the standard electricity price and the speed adjustment price, and the speed adjustment price is in direct proportion to the selected charging speed gear; in the new charging standard, a new charging speed gear is obtained according to the ratio of the conduction time of the quick charging switch, a new speed-per-hour adjusting price is obtained according to the new charging speed gear, and finally the charging fee is calculated by using the new speed-per-hour adjusting price and the standard electricity price.
When the charging speed is increased, a request instruction is sent to the user, the cost is increased, and the user is switched to the higher-speed charging after agreeing.
The invention has the beneficial effects that:
1. output power and the charging speed of charging stake can be filled according to the load adjustment to guarantee that the transformer is in normal safe voltage range operation, reduce the damage of transformer.
2. The charging rate can be set automatically according to the needs of users, and the charging can be carried out for a long time, so that the charging can be given a preferential fee. The charging requirement is adjusted by increasing the cost for the user who needs quick charging.
Drawings
FIG. 1 is a schematic diagram of one embodiment of the present invention.
Fig. 2 is a schematic diagram of an embodiment of the present invention with uninterrupted charging.
In the figure:
TY, a voltage regulating module; DY, low voltage output module; GY, high voltage output module; a USW, a switching controller; QM, slow charging switch; QK, fast charge switch;
Detailed Description
In order to make the technical solution and the advantages of the present invention clearer, the following explains embodiments of the present invention in further detail.
The utility model provides a fill electric pile with adjustable output, should fill electric pile and be equipped with high voltage output module GY and low pressure output module DY. The output voltage of the low-voltage output module DY is greater than the rated voltage of the electric vehicle battery; the output voltage of the high-voltage output module GY is larger than the voltage of the low-voltage output module DY.
Preferably, in the prior art, the rated voltage of the battery of the electric vehicle can be obtained by adjusting the charging voltage according to the vehicle-mounted BMS, so that the output voltage of the high-voltage output module GY and the low-voltage output module DY can be set by the charging pile according to the rated voltage of the battery of the electric vehicle, the output voltage of the low-voltage output module DY can be set to be greater than 5% of the rated voltage, and the output voltage of the high-voltage output module GY is greater than 10% -25% of the rated voltage of the battery of the electric vehicle. And after acquiring the BMS information, the charging pile sets a rectifying device to output a specific voltage according to the rated voltage of the battery.
Or the output voltage of the low-voltage output module DY is larger than the rated voltage of the electric vehicle battery and ranges from 0.1V to 0.5V. The voltage output by the high-voltage output module GY is 1-5 volts higher than the rated voltage.
The high-voltage output module GY can be an independent rectifier module, the low-voltage output module DY is an independent rectifier module, and the two rectifier modules do not need to be adjusted after being set.
A charging speed selection system is arranged on a human-computer interface of the charging pile and used for acquiring the charging intention of a user. The user can set up the speed of charging according to the demand of oneself, if do not put on urgent need can select to charge for a long time night, and then can reduce charge rate to the charge expense that appropriately reduces. In order to realize the switching output of high pressure output module GY and low pressure output module DY, it is equipped with output switching system to fill electric pile, output switching system includes: a fast charge switch QK electrically connected with the high-voltage output module and a slow charge switch QM electrically connected with the low-voltage output module. The charging interface is electrically connected with the output ends of the quick charging switch QK and the slow charging switch QM; and a switching controller USW electrically connected with the fast charge switch QK and the slow charge switch QM. The fast charge switch QK and the slow charge switch QM are alternately switched on and off, and the ratio of the on time of the fast charge switch QK is smaller for a gear with a slower charging speed in unit time. In the full-speed charging mode, the fast charging switch QK is always in a closed state, and the slow charging switch QM is always in an open state; in the slowest charging mode, the fast charging switch QK is always in the off state, and the slow charging switch QM is always in the on state. And in the full-speed charging mode, after the charging pile is connected with the electric vehicle, the high-voltage output by the GY module of the high-voltage output module is used for charging all the time of connection. In other charging modes, different gear positions can be set with different duty ratios of the charging time of the GY of the high-voltage output module and the charging time of the DY of the low-voltage output module. A plurality of gears can be arranged, and linear adjustment can also be adopted.
The high-voltage output module GY and the low-voltage output module DY can also be independent rectifier control modules, namely IGBT controllers and the like, and output interfaces of the two IGBT controllers are connected with the rectifier modules. The output voltage is controlled by activating and deactivating two rectifier control modules. The output switching system can be a signal switch, that is, the control signals of the high-voltage output module GY and the low-voltage output module DY are switched and output to the rectifier module. The control module can also be a start-stop control module of the high-voltage output module GY and the low-voltage output module DY, the high-voltage output module GY and the low-voltage output module DY are controlled to start and stop, and the signal output ends of the high-voltage output module GY and the low-voltage output module DY are electrically connected with the input end of the rectifier module at the same time.
When the charging rate is adjusted, the cost of charging needs to be changed along with it. The charging fee is the sum of the standard electricity price and the speed adjustment price, and the speed adjustment price is in direct proportion to the selected charging speed gear. When the speed adjusting price is zero, the duty ratio of the conduction time of the quick charge switch QK is 50%.
When the low-voltage output module DY and the high-voltage output module GY are independent rectifier modules, a voltage regulating module is connected between the quick charging switch QK and the high-voltage output module GY in series, wherein the voltage regulating module can be a voltage regulator. And the voltage regulating module TY is electrically connected with the switching controller USW. When the high-voltage output is switched to the low-voltage output, the switching controller USW adjusts the voltage regulating module TY to enable the voltage of the output end of the quick charging switch QK to be consistent with the voltage of the low-voltage output module DY, then the low-voltage output module DY is closed firstly to disconnect the quick charging switch QK, and the state of the voltage regulating module TY is kept. And then, when the low-voltage output is switched to the high-voltage output, the switching controller USW firstly closes the fast charge switch QK and opens the slow charge switch QM, and finally the switching controller USW adjusts the partial voltage of the voltage regulating module TY to be zero.
Meanwhile, the voltage regulating module TY can also be set as a software control module, and the voltage regulation is realized by changing the control mode, for example, the output voltage of the rectifying module is regulated by regulating the duty ratio conducted in the control module to be consistent with the output voltage of another rectifying module, and at this time, the above functions can also be achieved through software control.
A charging station system comprises a plurality of charging piles, a power transformation and distribution system and a central control system, wherein the central control system controls the power transformation and distribution system and the charging piles, the power transformation and distribution system is electrically connected with the charging piles, and the central control system is provided with a transformer output power acquisition device. In order to ensure the safe operation of the system, the following method is adopted to realize the protection of the overload of the transformer:
the transformer output power acquisition device acquires the output power of the transformer and judges whether the output power of the transformer reaches an upper limit value. And if the capacity of the transformer is 100MVA, setting the upper value and the lower value to be 80MVA, and starting the power reduction coordination module when the output power of the transformer exceeds 80 MVA.
And when the output power of the transformer is greater than the set upper limit value, the central control system sends a power regulation and control instruction to the selected charging pile controller through the power reduction coordination module. The power reduction coordination module can acquire and acquire the states of all charging piles and the charging rate of the current operation of the charging piles, and the charging piles capable of properly reducing the charging power are selected according to the power of the system and the selection of customers.
And after receiving the power regulation instruction, the controller of the charging pile reduces the duty ratio of the conduction time of the quick charging switch.
In the system, different charging piles can keep the load of the transformer in a dynamic and stable range in the process of continuously switching the high-voltage output module GY and the low-voltage output module DY, and overload operation of the transformer can be effectively avoided.
The method for selecting the charging pile by the power reduction coordination module comprises the following steps:
determining the number of charging piles for selecting and adjusting power output according to the value exceeding the limit value; namely, it is determined that the load required to be reduced is 10MVA, and at this time, it may be satisfied by adjusting one charging pile, or it may be necessary to adjust two or more charging piles to meet the requirement. At this time, the numbers of the charging piles in which the non-full-speed charging mode and the non-slowest-speed charging mode are selected from the charging piles need to be obtained, and the charging piles are randomly selected from all the numbers according to the selected numbers. After the electric pile is selected, the electric pile can automatically reduce a gear according to the speed reduction standard set by the electric pile. Meanwhile, after the charging pile is selected, the central control system sends a standard of charging speed reduction, and the charging pile adjusts the charging speed to a proper charging speed according to the reduced standard.
Or the method for selecting the charging pile by the power reduction coordination module comprises the following steps:
and acquiring the number of the charging pile with the full-speed charging mode. And the proportion of the conducting time of the quick charging switch QK of the charging pile in the full-speed charging mode is reduced in sequence in a circulating manner. The charging rate of each charging pile is reduced through sequential circulation, the effect of reducing the system power globally is achieved, and the transformer is protected. The method is applied to all charging piles of the system, and is carried out under the condition that other slow charging piles select slower charging speed.
Or, the method for selecting the charging pile by the power-down coordination module comprises the following steps:
and the on-time ratio of the quick charging switches QK of all the charging piles is reduced in sequence in a circulating manner. At this moment, all the charging piles are uniformly subjected to speed reduction operation. Different from the method, the method can be implemented when the number of the charging piles for full-speed charging is small and the effect of reducing the load cannot be achieved by the charging piles in the circulating full-speed charging mode.
Preferably, in order to realize early warning and early handling, when the user selects a full-speed charging mode, the controller of the charging pile sends a full-speed charging application to the central control system.
And after receiving the application, the central control system calculates available output power, wherein the available output power is the difference value between the existing output power and the output power of the upper limit value.
Judging whether the available output power meets two full-speed charging modes; if the charging requirement is met, issuing a full-speed charging permission instruction to the charging pile; and if not, issuing a full-speed charging forbidding instruction to the charging pile.
At this time, if the available output power is insufficient, the charging pile is not allowed to perform full-speed mode charging, and therefore the condition that the outgoing line of the transformer is overloaded is prevented.
Further, in order to keep the running state of the transformer good, the central control system issues a full-speed charging prohibition instruction to the charging pile and issues a recommended charging speed. The recommended charging speed is based on the remaining output power.
Preferably, a new charging standard is determined according to the adjusted on-time ratio of the quick charge switch QK. The method specifically comprises the following steps:
the charging cost is the sum of the standard electricity price and the speed adjustment price, and the speed adjustment price is in direct proportion to the selected charging speed gear;
in the new charging standard, a new charging speed gear is obtained according to the ratio of the conduction time of the quick charging switch QK, a new speed-per-hour adjusting price is obtained according to the new charging speed gear, and finally the charging fee is calculated by using the new speed-per-hour adjusting price and the standard electricity price.
Further, in order to realize humanization, when the charging speed is increased, a request instruction is sent to the user, the cost is increased, and the user agrees to switch to the faster charging speed.
In summary, the present invention is only a preferred embodiment, and is not intended to limit the scope of the present invention, and various changes and modifications can be made by workers in the light of the above description without departing from the technical spirit of the present invention. The technical scope of the present invention is not limited to the content of the specification, and all equivalent changes and modifications in the shape, structure, characteristics and spirit described in the scope of the claims of the present invention are included in the scope of the claims of the present invention.
Claims (7)
1. Fill electric pile system based on power regulation and control, including fill electric pile, change distribution system and central control system with adjustable a plurality of outputs, central control system control becomes distribution system and fills electric pile, change distribution system with fill electric pile electrical connection, its characterized in that:
the output adjustable charging pile is provided with a high-voltage output module (GY) and a low-voltage output module (DY), and the output voltage of the low-voltage output module (DY) is greater than the rated voltage of the electric vehicle battery; the output voltage of the high-voltage output module (GY) is greater than the voltage of the low-voltage output module (DY);
a charging speed selection system is arranged on a human-computer interface of the charging pile and used for acquiring the charging intention of a user;
fill electric pile and be equipped with output switched systems, output switched systems includes:
a quick charge switch (QK) electrically connected with the high voltage output module (GY);
a slow charging switch (QM) electrically connected to the low voltage output module (DY);
the charging interface is electrically connected with the output ends of the quick charging switch (QK) and the slow charging switch (QM);
a switching controller (USW) electrically connected to the fast charge switch (QK) and the slow charge switch (QM);
a voltage regulating module is connected between the quick charging switch (QK) and the high-voltage output module (GY) in series, and the voltage regulating module (TY) is electrically connected with a switching controller (USW);
the fast charging switch (QK) and the slow charging switch (QM) are switched on and off alternately, and the lower the charging speed in unit time is, the smaller the occupation ratio of the on-time of the fast charging switch (QK) is;
when the high-voltage output is switched to the low-voltage output, the switching controller (USW) adjusts the voltage regulating module (TY) to enable the voltage at the output end of the quick charging switch (QK) to be consistent with the voltage of the low-voltage output module (DY), then the low-voltage output module (DY) is closed first to disconnect the quick charging switch (QK), and the state of the voltage regulating module (TY) is kept;
when the low-voltage output is switched to the high-voltage output, the switching controller (USW) firstly closes the fast charging switch (QK) and then opens the slow charging switch (QM), and finally the switching controller (USW) regulates the partial pressure of the voltage regulating module (TY) to be zero;
in the full-speed charging mode, a fast charging switch (QK) is always in a closed state, and a slow charging switch (QM) is always in an open state; in the slowest charging mode, a fast charging switch (QK) is always in an off state, and a slow charging switch (QM) is always in an on state;
the central control system is provided with a transformer output power acquisition device; the method for ensuring the safe operation of the system comprises the following steps:
the transformer output power acquisition device acquires the output power of the transformer and judges whether the output power of the transformer reaches an upper limit value;
when the output power of the transformer is greater than the set upper limit value, the central control system sends a power regulation and control instruction to the selected charging pile controller through the power reduction coordination module;
after receiving the power regulation instruction, a controller of the charging pile reduces the ratio of the conduction time of a quick charging switch (QK);
different charging piles continuously switch the high-voltage output module and the low-voltage output module to keep the load of the transformer in a dynamic and stable range;
the method for selecting the charging pile by the power reduction coordination module comprises the following steps:
determining the number of charging piles for selectively adjusting power output according to the value exceeding the limit value;
acquiring the number of a charging pile which selects a non-full-speed charging mode and a non-slowest-speed charging mode from the charging piles;
randomly selecting charging piles from all the numbers according to the selected quantity;
or the like, or, alternatively,
the method for selecting the charging pile by the power reduction coordination module comprises the following steps:
acquiring the number of a charging pile with a full-speed charging mode;
the duty ratio of the conduction time of a quick charging switch (QK) of the charging pile in a full-speed charging mode is reduced in a circulating mode in sequence;
or the like, or, alternatively,
the method for selecting the charging pile by the power reduction coordination module comprises the following steps:
and the on-time ratio of the quick charging switches (QK) of all the charging piles is reduced in sequence in a circulating manner.
2. The power regulation-based charging pile system according to claim 1, wherein:
the range that the output voltage of the low-voltage output module (DY) is larger than the rated voltage of the electric vehicle battery is 0.1-0.5V.
3. The power regulation-based charging pile system according to claim 1, wherein:
when the speed adjusting price is zero, the duty ratio of the conduction time of the quick charge switch (QK) is 50%.
4. The power regulation-based charging pile system according to claim 1, wherein:
when a user selects a full-speed charging mode, a controller of the charging pile sends a full-speed charging application to the central control system;
after receiving the application, the central control system calculates available output power, wherein the available output power is the difference value between the existing output power and the output power of the upper limit value;
judging whether the available output power meets two full-speed charging modes; if the charging requirement is met, issuing a full-speed charging permission instruction to the charging pile; and if not, issuing a full-speed charging forbidding instruction to the charging pile.
5. The power regulation-based charging pile system according to claim 4, wherein:
and after the central control system issues a full-speed charging prohibition instruction to the charging pile, issuing a suggested charging speed.
6. The power regulation-based charging pile system according to claim 4 or 5, wherein:
and determining a new charging standard according to the adjusted on-time ratio of the quick charge switch (QK).
7. The power regulation-based charging pile system according to claim 6, wherein:
the charging cost is the sum of the standard electricity price and the speed adjustment price, and the speed adjustment price is in direct proportion to the selected charging speed gear;
in the new charging standard, a new charging speed gear is obtained according to the ratio of the conduction time of a quick charging switch (QK), a new speed-per-hour adjustment price is obtained according to the new charging speed gear, and finally, the new speed-per-hour adjustment price and the standard electricity price are used for calculating the charging fee;
when the charging speed is increased, a request instruction is sent to the user, the cost is increased, and the user agrees to switch to the faster charging.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110677626.6A CN113370818B (en) | 2021-06-18 | 2021-06-18 | Fill electric pile and system based on power regulation and control |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110677626.6A CN113370818B (en) | 2021-06-18 | 2021-06-18 | Fill electric pile and system based on power regulation and control |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113370818A CN113370818A (en) | 2021-09-10 |
| CN113370818B true CN113370818B (en) | 2022-11-04 |
Family
ID=77577645
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110677626.6A Active CN113370818B (en) | 2021-06-18 | 2021-06-18 | Fill electric pile and system based on power regulation and control |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113370818B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115848191B (en) * | 2022-12-22 | 2023-07-07 | 深圳时代能创软件科技有限公司 | Charging control system and method for alternating-current charging pile of electric automobile |
| CN115675162B (en) * | 2023-01-04 | 2023-03-21 | 北京飞利信信息安全技术有限公司 | Multi-objective optimization charging control method and device for electric vehicle and storage medium |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN210225040U (en) * | 2019-10-09 | 2020-03-31 | 四川蔚宇电气有限责任公司 | Distributed power-limiting charging system |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8963494B2 (en) * | 2012-05-18 | 2015-02-24 | Tesla Motors, Inc. | Charge rate optimization |
| CN105449804A (en) * | 2016-01-31 | 2016-03-30 | 苏黎 | Mobile terminal power circuit and device |
| CN205646853U (en) * | 2016-02-24 | 2016-10-12 | 北京新能源汽车股份有限公司 | Charging post |
| CN106130137B (en) * | 2016-08-22 | 2018-08-21 | 王毅 | A kind of electric vehicle coordinates charging system and its self-decision method |
| JP6564502B1 (en) * | 2018-06-29 | 2019-08-21 | レスク株式会社 | Battery management system |
-
2021
- 2021-06-18 CN CN202110677626.6A patent/CN113370818B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN210225040U (en) * | 2019-10-09 | 2020-03-31 | 四川蔚宇电气有限责任公司 | Distributed power-limiting charging system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113370818A (en) | 2021-09-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN113370818B (en) | Fill electric pile and system based on power regulation and control | |
| CN107346908B (en) | Charging pile for intelligently allocating power and control method thereof | |
| CN110271436A (en) | Electric car reservation charging control method and system | |
| CN108306359B (en) | Control method of single-gun and double-gun automatic switching double-gun charging pile system | |
| US20210288514A1 (en) | Direct Current Power Distribution Method, Device and System | |
| CN111556823B (en) | Charging and discharging circuit, vehicle-mounted charging and discharging system and charging and discharging method | |
| CA3129789A1 (en) | Battery-enabled, direct current, electric vehicle charging station, method and controller therefor | |
| CN107444188A (en) | A kind of annular power shares intelligent charging machine and its charging method | |
| CN110661278A (en) | Energy storage air conditioning system and control method and control device thereof | |
| CN105553057A (en) | Power grid protection based electric vehicle charging station control system | |
| CN115782667B (en) | Method and system for distributing capacitance for charging pile | |
| CN115303107A (en) | Centralized charging control system and method for electric automobile | |
| CN114889473A (en) | Electric automobile direct-current boost charging control system, control method and vehicle | |
| CN211809139U (en) | Self-adaptive power regulation and control multi-gun alternating-current charging pile | |
| CN205992777U (en) | A kind of electrokinetic cell system and automobile | |
| CN109149679B (en) | Method for improving endurance mileage of electric automobile, power management controller and automobile | |
| CN110165686B (en) | Charging device for electric automobile | |
| CN203522271U (en) | Charging or discharging system of device | |
| CN105576748A (en) | Multi-interface charge scheduling method and system | |
| CN112531743B (en) | Virtual power plant power regulation method based on direct-current power distribution technology | |
| CN105620296B (en) | Brake of electric vehicle Poewr control method, apparatus and system | |
| CN110875681A (en) | Multi-system train power supply system and control method thereof | |
| CN114559850A (en) | Matrix bus-tie control-based super fast-charging group control system and control method | |
| CN208782552U (en) | A kind of charging equipment | |
| KR102336964B1 (en) | Battery for hybrid vehicle and control method thereof |
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 |