CN116101109A - Parallel energy storage charging system - Google Patents
Parallel energy storage charging system Download PDFInfo
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- CN116101109A CN116101109A CN202310388582.4A CN202310388582A CN116101109A CN 116101109 A CN116101109 A CN 116101109A CN 202310388582 A CN202310388582 A CN 202310388582A CN 116101109 A CN116101109 A CN 116101109A
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- 238000004146 energy storage Methods 0.000 title claims abstract description 172
- 238000004364 calculation method Methods 0.000 claims description 7
- 239000007787 solid Substances 0.000 claims description 6
- 230000005611 electricity Effects 0.000 claims description 5
- 238000006243 chemical reaction Methods 0.000 claims description 2
- 239000002699 waste material Substances 0.000 abstract description 6
- 238000013468 resource allocation Methods 0.000 description 9
- 230000000694 effects Effects 0.000 description 3
- 238000005070 sampling Methods 0.000 description 2
- SAZUGELZHZOXHB-UHFFFAOYSA-N acecarbromal Chemical compound CCC(Br)(CC)C(=O)NC(=O)NC(C)=O SAZUGELZHZOXHB-UHFFFAOYSA-N 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
- B60L53/50—Charging stations characterised by energy-storage or power-generation means
- B60L53/53—Batteries
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
- B60L53/10—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles characterised by the energy transfer between the charging station and the vehicle
- B60L53/14—Conductive energy transfer
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
- B60L53/30—Constructional details of charging stations
- B60L53/31—Charging columns specially adapted for electric vehicles
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/10—Technologies relating to charging of electric vehicles
- Y02T90/12—Electric charging stations
Abstract
The invention discloses a parallel energy storage charging system, which is characterized by comprising an energy storage charging pile, charging connectors, a change-over switch and a control host, wherein the energy storage charging pile, the charging connectors and the change-over switch are all provided with a plurality of same energy storage charging piles, each energy storage charging pile is connected with one change-over switch, the change-over switch is connected with each charging connector, the change-over switch is used for controlling at most one charging connector to be communicated with the energy storage charging pile, the control host is connected with each charging connector and each change-over switch, and the control host is configured with a resource configuration strategy. The system can reasonably configure the charging resources according to the charging requirements of the automobile, and can reduce the waste of the charging resources and realize the full utilization of the charging resources while meeting the charging requirements of the new energy automobile.
Description
Technical Field
The invention relates to the field of charging, in particular to a parallel energy storage charging system.
Background
In recent years, with the popularization of new energy automobiles, charging stations are rapidly developing. The conventional charging current of the new energy automobile is about 15A, and the current during rapid charging is 150A-400A, and in order to meet the rapid charging requirement of the new energy automobile, a charging station is generally provided with a high-power energy storage charging pile capable of providing high current.
Along with the improvement of the power of the energy storage charging pile, the cost of the energy storage charging pile can be increased by times. In order to reduce the cost, a low-power energy storage charging pile is also arranged in the charging station. Under ideal state, high-power energy storage fills electric pile and is used for charging for the new energy automobile that needs the heavy current, and low-power energy storage fills electric pile and charges for the new energy automobile that needs the low current.
However, in the practical operation of the charging station, when the vehicle which only needs to be charged with small current occupies the high-power energy storage charging pile, although the charging requirement of the small-current vehicle can be met, the charging resource in the charging station is not reasonably utilized. And the later automobiles needing large-current charging can only be charged by using the small-power energy storage charging pile, so that the charging efficiency is low, and the charging requirement of the large-current automobiles cannot be met. Meanwhile, the charging resources of the charging station are not fully utilized, and the revenue of the charging station is reduced.
Disclosure of Invention
Aiming at the defects existing in the prior art, the invention aims to provide the parallel energy storage charging system, which can reasonably configure charging resources according to the charging requirements of automobiles, reduce the waste of the charging resources while meeting the charging requirements of new energy automobiles, and realize the full utilization of the charging resources.
In order to achieve the above purpose, the present invention provides the following technical solutions: the utility model provides a parallelly connected energy storage charging system, includes energy storage charging stake, charging connector, change over switch and control host computer, energy storage charging stake the charging connector with change over switch all is provided with a plurality of and quantity is the same, every energy storage charging stake all is connected one change over switch, change over switch with each charging connector all is connected, change over switch is used for controlling wherein at most one charging connector with energy storage charging stake switches on, control host computer with each charging connector and each change over switch all is connected, control host computer disposes resource configuration strategy, resource configuration strategy includes
Step S100, obtaining charging information of the automobiles connected with the charging connectors, wherein the charging information comprises charging current values required by the automobiles;
step 200, under the condition that each automobile needing to be charged is guaranteed to be charged by at least one energy storage charging pile, determining all feasible charging schemes, wherein the charging schemes comprise the conduction condition of each energy storage charging pile and each charging connector;
step S300, calculating an aggregate charging current value for each feasible charging scheme according to the maximum charging current value of each energy storage charging pile and the required charging current value of each automobile, wherein the aggregate charging current value represents the sum of the charging current values of all the energy storage charging piles when charging according to the charging scheme;
step S400, marking the charging scheme with the largest total charging current value as an option scheme;
and S500, the control host controls each change-over switch to change according to the selected scheme so that the conduction condition of each energy storage charging pile and each charging connector accords with the selected scheme.
As a further improvement of the present invention, the step S200 includes configuring all the charging schemes in the control host, and the control host sequentially retrieves each charging scheme and performs feasibility analysis until all the charging schemes complete feasibility analysis;
the feasibility analysis comprises the steps that the control host determines whether all charging connectors connected with automobiles to be charged are communicated with at least one energy storage charging pile in the charging scheme, and if yes, the charging scheme is marked as a feasible charging scheme; otherwise, the charging scheme is marked as an infeasible charging scheme.
As a further improvement of the present invention, the step S300 includes presetting a maximum charging current value of each energy storage charging pile in the control host, the control host sequentially invoking each possible charging scheme and calculating the total charging current value through a preset total charging current value calculation sub-strategy, until all possible charging schemes are calculated to obtain the corresponding total charging current value, the total charging current value calculation sub-strategy includes
Step S310, the control host determines all the energy storage charging piles for charging each automobile to be charged in a feasible charging scheme;
step S320, comparing the required charging current value of the automobile to be charged with the sum of the maximum charging current values of all the energy storage charging piles for charging the automobile, and taking the smaller value of the two values as the actual charging current value of the automobile;
step S330, adding the actual charging current values of all the automobiles to be charged to obtain the total charging current value.
As a further improvement of the present invention, the charging information further includes a charge amount required for the automobile, and the step S400 further includes
Step S410, when more than one option is selected, the control host calculates the required charging time length of each automobile according to the required charging current value and the required charging amount of each automobile, marks the automobile with the minimum required charging time length as the priority charging automobile,
step S420, judging whether the charging current value required by the preferential charging automobile is equal to the actual charging current value in each selected scheme in sequence, and if the judging result is all equal or all unequal, not processing the selected scheme mark of the charging scheme; if the judging result is that the parts are equal and the parts are not equal, the option marks of the option with the equal judging result are reserved, and the option marks of the option with the unequal judging result are removed.
As a further improvement of the present invention, the step S400 further includes
Step S430, when more than one option is selected, calculating to obtain excessive occupation current values of the option according to a preset excessive occupation current value algorithm, reserving option marks of the option with the minimum excessive occupation current value, and removing option marks of other option;
the excessive occupancy current value algorithm is configured to
wherein ,
for excessive occupancy current value, < >>
For charging the motor vehicle to be charged, the number of all energy-storage charging piles is +.>
For the number of vehicles to be charged, +.>
and />
All are circulation variables, ++>
Is->
Maximum charging current value of the energy storage charging pile +.>
Is->
Actual charging current values of the automobiles to be charged.
In the step S500, when more than one option is selected, the control host selects one option, and controls each transfer switch to perform conversion according to the selected option, so that the conduction condition of each energy storage charging pile and each charging connector accords with the option.
As a further improvement of the invention, the control host executes the resource allocation strategy when acquiring information of the change of the automobile needing to be charged through the charging connector.
As a further improvement of the invention, the parallel energy storage charging system further comprises an energy storage battery cabinet, the energy storage battery cabinet is electrically connected with each energy storage charging pile, the control host acquires the residual electric quantity of each energy storage charging pile in real time, and when the residual electric quantity of the energy storage charging pile is lower than a preset critical electric quantity, the control host controls the energy storage battery cabinet to charge the corresponding energy storage charging pile.
As a further improvement of the invention, the energy storage battery cabinet is externally connected with a power grid, and the control host controls the energy storage charging cabinet to receive power supply of the power grid in the low electricity price period of the power grid.
As a further development of the invention, the energy storage element of the energy storage charging pile is configured as a ternary semi-solid battery.
The invention has the beneficial effects that: through the setting of energy storage charging stake, charging connector, change over switch and control host computer for after the car that needs to charge is connected with arbitrary charging connector, control host computer can change the energy storage charging stake that charges the car through the change over switch, thereby has improved probably for the rational distribution of charging resources. And can realize selecting a plurality of energy storage to charge electric pile and charge to an automobile simultaneously and improve the charge current, satisfy the required charge current value requirement of automobile.
Through the setting of resource allocation strategy, the driver does not need to select the energy storage charging pile by oneself, and the same charging effect can be achieved no matter the automobile is connected with any charging connector. And the waste of charging resources caused by manual selection of the energy storage charging pile is avoided. The control host selects a charging scheme with the maximum total charging current value according to the current charging current values of all automobiles to be charged through a resource allocation strategy, so that the full utilization of charging resources is realized, the overall charging efficiency of the parallel energy storage charging system is highest, and the revenue of a charging station is improved. Therefore, the invention can reasonably allocate the charging resources according to the charging requirements of the automobile, and can reduce the waste of the charging resources and realize the full utilization of the charging resources while meeting the charging requirements of the new energy automobile.
Drawings
FIG. 1 is a schematic diagram of a frame of the present invention;
FIG. 2 is a flow chart of a resource allocation policy;
fig. 3 is a flow chart of the aggregate charge current value calculation sub-strategy.
Reference numerals: 1. energy storage charging pile; 2. a charging connector; 3. a change-over switch; 4. a control host; 5. an energy storage battery cabinet.
Detailed Description
It is noted that all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs unless otherwise indicated. The terminology used in the description of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the present application. It should be noted that, in the case of no conflict, the embodiments and features in the embodiments may be combined with each other.
The invention will now be described in further detail with reference to the drawings and examples. Wherein like parts are designated by like reference numerals. It should be noted that the words "front", "back", "left", "right", "upper" and "lower" used in the following description refer to directions in the drawings, and the words "bottom" and "top", "inner" and "outer" refer to directions toward or away from, respectively, the geometric center of a particular component.
Referring to fig. 1 to 3, the parallel energy storage charging system of this embodiment includes an energy storage charging pile 1, a charging connector 2, a change-over switch 3 and a control host 4, where the energy storage charging pile 1, the charging connector 2 and the change-over switch 3 are all provided with a plurality of same numbers, each energy storage charging pile 1 is connected with one change-over switch 3, the change-over switch 3 is connected with each charging connector 2, the change-over switch 3 is used for controlling at most one of the charging connectors 2 to be conducted with the energy storage charging pile 1, and the control host 4 is connected with each charging connector 2 and each change-over switch 3.
Specifically, one end of each change-over switch 3 is connected with one energy storage charging pile 1, and the other end of the change-over switch 3 is switched between each charging connector 2 and the empty connector, and when the change-over switch 3 is connected with the empty connector, the corresponding energy storage charging pile 1 is not charged externally. When the change-over switch 3 is connected with any charging connector 2, the corresponding energy storage charging pile 1 charges the automobile to be charged, which is connected with the charging connector 2. The change-over switch 3 is used for controlling at most one charging connector 2 to be conducted with the energy storage charging piles 1, namely, each energy storage charging pile 1 can only be conducted with one charging connector 2, and only one automobile can be charged. And a charging connector 2 can be conducted with a plurality of energy storage charging piles 1, namely, a plurality of energy storage charging piles 1 can charge an automobile at the same time, so that the charging current value is improved. The control host 4 is connected with each transfer switch 3, so that each transfer switch 3 can be controlled to switch as required to realize various charging schemes. Through the setting of energy storage charging stake 1, charging connector 2, change over switch 3 and control host computer 4 for after the car that needs to charge is connected with arbitrary charging connector 2, control host computer 4 can change the energy storage charging stake 1 that charges the car through change over switch 3, thereby has improved probably for the rational distribution of charging resources. And can realize selecting a plurality of energy storage charging stake 1 to charge to an automobile simultaneously and improve the charge current, satisfy the required charge current value requirement of automobile.
The energy storage element of the energy storage charging pile 1 is configured as a ternary semi-solid battery, and the solid ternary semi-solid battery has small volume, high energy density and higher safety. The charging connector 2 can be set to be a fixed type or a movable type connector, when the charging connector 2 is set to be a fixed type connector, the connecting wires between the change-over switch 3 and each charging connector 2 can be buried underground or hidden through a pipeline, so that the connecting wires are prevented from being scattered too much and easy to damage.
The control host 4 is configured with a resource allocation policy comprising:
in step S100, charging information of the car connected to each charging connector 2 is acquired, and the charging information includes a charging current value required for the car, a charging amount required for the car, and the charging connector 2 corresponding to the car.
Specifically, when the charging connector 2 is connected to the automobile, the required charge amount and the charging current value of the automobile are obtained, that is, charging information is formed and sent to the control host 4. The required charge amount of the automobile can be selected by the driver, for example, the driver chooses to flush to 80% of the total capacity to finish charging, and the required charge amount is the difference between 80% of the total capacity and the current electric quantity. The desired charging current value may also be selected by the driver, with the shorter the desired charging time, the greater the desired charging current value.
In step S200, under the condition that each car to be charged is guaranteed to have at least one energy storage charging pile 1 for charging, all possible charging schemes are determined, and the charging schemes include the conduction condition of each energy storage charging pile 1 and each charging connector 2.
The step S200 specifically includes: all charging schemes are configured in the control host 4, and the control host 4 sequentially calls each charging scheme and performs feasibility analysis until all the charging schemes complete the feasibility analysis. The feasibility analysis comprises the steps that the control host 4 determines whether all charging connectors 2 connected with automobiles to be charged are communicated with at least one energy storage charging pile 1 in a charging scheme, and if yes, the charging scheme is marked as a feasible charging scheme; otherwise, the charging scheme is marked as an infeasible charging scheme.
Specifically, the vehicle to be charged is a vehicle that is connected to the charging connector 2 and has not completed charging. When the number of the energy storage charging piles 1, the transfer switches 3 and the charging connectors 2 is a, since the other end of each transfer switch 3 is switched between the respective charging connector 2 and the empty connector, i.e. each transfer switch 3 has a+1 connection states, the charging scheme has a total of
A kind of module is assembled in the module and the module is assembled in the module. All +.>
A charging scheme. Through feasibility analysis, the charging scheme for realizing that each automobile needing to be charged is charged by at least one energy storage charging pile 1 is marked as a feasible charging scheme, and other charging schemes are marked as infeasible charging schemes. The feasible charging scheme ensures that each automobile needing to be charged is charged by at least one energy storage charging pile 1, so that each automobile needing to be charged can be charged, and the storage is avoidedAnd under the condition that the automobile is not charged, the user experience is ensured.
Step S300, calculating an aggregate charging current value for each possible charging scheme according to the maximum charging current value of each energy storage charging pile 1 and the required charging current value of each automobile, wherein the aggregate charging current value represents the sum of the charging current values of all the energy storage charging piles 1 when charging according to the charging scheme.
The step S300 specifically includes: the control host 4 is preset with the maximum charging current value of each energy storage charging pile 1, and the control host 4 sequentially invokes each feasible charging scheme and calculates the total charging current value through a preset total charging current value calculation sub-strategy until all the feasible charging schemes are calculated to obtain the corresponding total charging current value.
The aggregate charge current value calculation sub-strategy includes:
in step S310, the control host 4 determines all the energy storage charging piles 1 for charging each car to be charged in the possible charging schemes.
In step S320, the required charging current value of the vehicle to be charged is compared with the sum of the maximum charging current values of all the energy storage charging piles 1 for charging the vehicle, and the smaller value of the two is used as the actual charging current value of the vehicle.
Step S330, adding the actual charging current values of all the automobiles to be charged to obtain a total charging current value.
Specifically, for example, the number of the energy storage charging piles 1 is 4, and the number of the energy storage charging piles 1, the number of the energy storage charging piles 1 and the number of the energy storage charging piles 1 are respectively 1, 200A, 300A and 400A, and the corresponding maximum charging current values are respectively 100A, 200A, 300A and 400A. Two charging connectors 2 are connected with automobiles to be charged, and the required charging currents are 350A and 380A respectively. And the charging scheme is that the No. 1 energy storage charging pile 1 and the No. 3 energy storage charging pile 1 charge the automobile with the required charging current of 350A, and the No. 4 energy storage charging pile 1 charges the automobile with the required charging current of 380A. Then, since 100A plus 300A is greater than 350A and 400A is greater than 380A, the total charging current value at this time is 350A plus 380A is 730A.
In step S400, the charging scheme with the largest total charging current value is marked as the option.
Specifically, the total charging current values of the respective possible charging schemes are compared, and the charging scheme having the largest total charging current value is marked as the selected scheme.
Step S400 further includes:
in step S410, when more than one of the schemes is selected, the control host 4 calculates a required charge time period for each car based on the required charge current value and the required charge amount for each car, and marks the car with the minimum required charge time period as a priority charging car,
step S420, judging whether the charging current value required by the prior charging automobile is equal to the actual charging current value in each selected scheme in sequence, and if the judging result is all equal or all unequal, not processing the selected scheme mark of the charging scheme; if the judging result is that the parts are equal and the parts are not equal, the option marks of the option with the equal judging result are reserved, and the option marks of the option with the unequal judging result are removed.
Specifically, for example, the number of options is 2. The required charging time period, specifically, the required charging time period for which the required charging amount and the required charging current value are extremely required, is calculated according to the required charging current value and the required charging amount of the automobile. And in the automobiles needing to be charged, marking the automobile with the minimum required charging time as a priority charging automobile. If the charging current value required by the priority charging automobile is partially equal to or partially unequal to the actual charging current value in each of the selection schemes, the fact that the actual charging current value of the priority charging automobile is different in different selection schemes and the required charging time period is also different is indicated. At this time, the selection scheme that the actual charging current value of the vehicle with priority charging does not reach the required charging current value is removed from the selection scheme mark, and the selection scheme that the actual charging current value of the vehicle with priority charging reaches the required charging current value is reserved. In the following adopted selection scheme, the vehicle with the priority charging can finish charging as soon as possible. The energy storage charging pile 1 for charging the vehicle that is charging priority can thus be freed up as soon as possible in order to further optimize the charging resources of the other vehicles that are still charging. Or can access other vehicles waiting in line for charging as soon as possible.
Step S430, when more than one option is selected after the step S420, calculating the excessive occupied current value of each option according to a preset excessive occupied current value algorithm, reserving the option mark of the option with the minimum excessive occupied current value, and removing the option marks of other options.
The excessive occupancy current value algorithm is configured to
wherein ,
for excessive occupancy current value, < >>
For the number of all energy-storage charging piles 1 for charging the motor vehicle to be charged, +.>
For the number of vehicles to be charged, +.>
and />
All are circulation variables, ++>
Is->
Maximum charging current value of individual energy storage charging pile 1 +.>
Is->
The individual needsActual charging current value of the charged car.
Specifically, the meaning of the excessive occupancy current value algorithm is:
step S431, calculating the sum of the maximum charging current values of all the energy storage charging piles 1 for charging the automobile to be charged;
step S432, calculating the sum of actual charging current values of all automobiles needing to be charged;
step S433, taking the difference value between the sum of the maximum charging current values and the sum of the actual charging current values as the excessive occupation current value.
For example, the number of the energy storage charging piles 1 is 4, and the corresponding maximum charging current values are 100A, 200A, 300A and 400A respectively, which are the number 1 energy storage charging pile 1, the number 2 energy storage charging pile 1, the number 3 energy storage charging pile 1 and the number 4 energy storage charging pile 1 respectively. Two charging connectors 2 are connected with automobiles to be charged, and the required charging currents are 350A and 380A respectively.
If the scheme one is adopted, the energy storage charging pile 1 and the energy storage charging pile 3 are adopted, the energy storage charging pile 1 charges the automobile with the required charging current of 350A, and the energy storage charging pile 4 charges the automobile with the required charging current of 380A. The sum of the maximum charging current values is 100a+300a+400a=800A. Since 100A plus 300A is greater than 350A and 400A is greater than 380A, the actual charging current value at this time is 350A plus 380A is 730A. The value of the excessive occupation current is 800A-730A and 70A.
If the scheme II is selected, the energy storage charging pile No. 2 1 and the energy storage charging pile No. 3 are used for charging the automobile with the required charging current of 350A, the energy storage charging pile No. 1 is used for charging the automobile with the required charging current of 380A, and the energy storage charging pile No. 4 is used for charging the automobile with the required charging current of 380A. The sum of the maximum charging current values is 200a+300a+400a=900A. Since 200A plus 300A is greater than 350A and 400A is greater than 380A, the actual charging current value at this time is 350A plus 380A is 730A. The value of the excessive occupation current is 900A-730A 170A.
The option mark of the option one is reserved, and the option mark of the option two is removed. Through the arrangement, the waste of charging resources can be reduced under the condition that the charging effect is not affected, the use amount of the energy storage charging pile 1 is reduced, and the configuration of the charging resources is further optimized.
In step S500, the control host 4 controls each of the switches 3 to switch according to the selection scheme, so that the conduction condition of each of the energy storage charging piles 1 and each of the charging connectors 2 conforms to the selection scheme.
Specifically, when more than one option is selected after step S430, the control host 4 selects one option, and controls each switch 3 to switch according to the selected option, so that the conduction condition of each energy storage charging pile 1 and each charging connector 2 accords with the option. Namely, the control host 4 controls the change-over switch 3 to change according to the sampling option, thereby realizing the charging of the automobile according to the sampling option.
When the control host 4 obtains information of the change of the automobile to be charged through the charging connector 2, the resource configuration strategy is executed. That is, the resource allocation policy is executed whenever the vehicle to be charged is changed, for example, when a new vehicle to be charged is connected to the charging connector 2, or when the vehicle to be charged is finished charging, or when the vehicle to be charged is stopped to continue charging. Therefore, the parallel energy storage charging system can charge each automobile needing to be charged in real time with the optimized charging resource configuration.
Through the setting of the resource allocation strategy, a driver does not need to select the energy storage charging pile 1 by himself, and the same charging effect can be achieved no matter the automobile is connected with any charging connector 2. The waste of charging resources caused by manual selection of the energy storage charging pile 1 is avoided. The control host 4 selects a charging scheme with the maximum total charging current value according to the current charging current values of all automobiles to be charged through a resource allocation strategy, so that the full utilization of charging resources is realized, the overall charging efficiency of the parallel energy storage charging system is highest, and the revenue of the charging station is improved.
The parallel energy storage charging system further comprises an energy storage battery cabinet 5, the energy storage battery cabinet 5 is electrically connected with each energy storage charging pile 1, the control host 4 obtains the residual electric quantity of each energy storage charging pile 1 in real time, and when the residual electric quantity of the energy storage charging pile 1 is lower than the preset critical electric quantity, the control host 4 controls the energy storage battery cabinet 5 to charge the corresponding energy storage charging pile 1.
Specifically, the residual electric quantity of the energy storage charging pile 1 may be the residual electric quantity value of the energy storage charging pile 1, or the residual electric quantity proportional value of the energy storage charging pile 1. The energy storage element of the energy storage battery cabinet 5 is configured as a ternary semi-solid battery, and the energy storage battery cabinet 5 can charge each energy storage charging pile 1 according to the residual electric quantity of each energy storage charging pile 1. The current of each energy storage charging pile 1 is ensured, so that the smooth execution of the resource allocation strategy is ensured.
The energy storage battery cabinet 5 is externally connected with a power grid, and the control host 4 controls the energy storage charging cabinet to receive power supply of the power grid in the low electricity price period of the power grid.
Specifically, the energy storage charging cabinet receives power supply of the power grid in the low electricity price period of the power grid, so that the power supply electricity price can be reduced, the operation cost is reduced, and the revenue is improved.
The above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above examples, and all technical solutions belonging to the concept of the present invention belong to the protection scope of the present invention. It should be noted that modifications and adaptations to the present invention may occur to one skilled in the art without departing from the principles of the present invention and are intended to be within the scope of the present invention.
Claims (10)
1. Parallel energy storage charging system, its characterized in that: including energy storage charging stake, charging connector, change over switch and control host computer, energy storage charging stake the charging connector with change over switch all is provided with a plurality of and quantity the same, every energy storage charging stake all connects one change over switch, change over switch with each the charging connector all is connected, change over switch is used for controlling wherein at most one charging connector with energy storage charging stake switches on, control host computer with each charging connector and each change over switch all is connected, control host computer disposes resource configuration strategy, resource configuration strategy includes
Step S100, obtaining charging information of the automobiles connected with the charging connectors, wherein the charging information comprises charging current values required by the automobiles;
step 200, under the condition that each automobile needing to be charged is guaranteed to be charged by at least one energy storage charging pile, determining all feasible charging schemes, wherein the charging schemes comprise the conduction condition of each energy storage charging pile and each charging connector;
step S300, calculating an aggregate charging current value for each feasible charging scheme according to the maximum charging current value of each energy storage charging pile and the required charging current value of each automobile, wherein the aggregate charging current value represents the sum of the charging current values of all the energy storage charging piles when charging according to the charging scheme;
step S400, marking the charging scheme with the largest total charging current value as an option scheme;
and S500, the control host controls each change-over switch to change according to the selected scheme so that the conduction condition of each energy storage charging pile and each charging connector accords with the selected scheme.
2. The parallel energy storage charging system of claim 1, wherein: step S200 includes configuring all the charging schemes in the control host, and the control host sequentially retrieves each charging scheme and performs feasibility analysis until all the charging schemes complete feasibility analysis;
the feasibility analysis comprises the steps that the control host determines whether all charging connectors connected with automobiles to be charged are communicated with at least one energy storage charging pile in the charging scheme, and if yes, the charging scheme is marked as a feasible charging scheme; otherwise, the charging scheme is marked as an infeasible charging scheme.
3. The parallel energy storage charging system of claim 2, wherein: the step S300 includes presetting a maximum charging current value of each energy storage charging pile in the control host, sequentially invoking each feasible charging scheme by the control host and calculating the total charging current value through a preset total charging current value calculation sub-strategy, until all feasible charging schemes are calculated to obtain the corresponding total charging current value, wherein the total charging current value calculation sub-strategy includes
Step S310, the control host determines all the energy storage charging piles for charging each automobile to be charged in a feasible charging scheme;
step S320, comparing the required charging current value of the automobile to be charged with the sum of the maximum charging current values of all the energy storage charging piles for charging the automobile, and taking the smaller value of the two values as the actual charging current value of the automobile;
step S330, adding the actual charging current values of all the automobiles to be charged to obtain the total charging current value.
4. A parallel energy storage charging system according to claim 3, wherein: the charging information further includes a charge amount required for the car, and the step S400 further includes
Step S410, when more than one option is selected, the control host calculates the required charging time length of each automobile according to the required charging current value and the required charging amount of each automobile, marks the automobile with the minimum required charging time length as the priority charging automobile,
step S420, judging whether the charging current value required by the preferential charging automobile is equal to the actual charging current value in each selected scheme in sequence, and if the judging result is all equal or all unequal, not processing the selected scheme mark of the charging scheme; if the judging result is that the parts are equal and the parts are not equal, the option marks of the option with the equal judging result are reserved, and the option marks of the option with the unequal judging result are removed.
5. The parallel energy storage charging system of claim 4, wherein: the step S400 also comprises
Step S430, when more than one option is selected, calculating to obtain excessive occupation current values of the option according to a preset excessive occupation current value algorithm, reserving option marks of the option with the minimum excessive occupation current value, and removing option marks of other option;
the excessive occupancy current value algorithm is configured to
wherein ,
for excessive occupancy current value, < >>
For charging the motor vehicle to be charged, the number of all energy-storage charging piles is +.>
For the number of vehicles to be charged, +.>
and />
All are circulation variables, ++>
Is->
Maximum charging current value of the energy storage charging pile +.>
Is->
Actual charging current values of the automobiles to be charged.
6. The parallel energy storage charging system of claim 5, wherein: in the step S500, when more than one option is selected, the control host selects one option, and controls each transfer switch to perform conversion according to the selected option, so that the conduction condition of each energy storage charging pile and each charging connector accords with the option.
7. The parallel energy storage charging system of claim 1, wherein: and when the control host acquires information of the change of the automobile to be charged through the charging connector, executing the resource configuration strategy.
8. The parallel energy storage charging system of claim 1, wherein: the parallel energy storage charging system further comprises an energy storage battery cabinet, the energy storage battery cabinets are electrically connected with the energy storage charging piles, the control host acquires the residual electric quantity of each energy storage charging pile in real time, and when the residual electric quantity of the energy storage charging pile is lower than a preset critical electric quantity, the control host controls the energy storage battery cabinets to charge the corresponding energy storage charging piles.
9. The parallel energy storage charging system of claim 8, wherein: the energy storage battery cabinet is externally connected with a power grid, and the control host controls the energy storage charging cabinet to receive power supply of the power grid in the low electricity price period of the power grid.
10. The parallel energy storage charging system of claim 1, wherein: the energy storage element of the energy storage charging pile is configured as a ternary semi-solid battery.
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