CN115027316A - Energy storage and charging integrated battery replacement station and energy storage and charging battery replacement system - Google Patents
Energy storage and charging integrated battery replacement station and energy storage and charging battery replacement system Download PDFInfo
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- 238000004146 energy storage Methods 0.000 title claims abstract description 225
- 238000006243 chemical reaction Methods 0.000 claims abstract description 32
- 230000005611 electricity Effects 0.000 claims description 35
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- 238000007599 discharging Methods 0.000 claims description 9
- 238000005259 measurement Methods 0.000 claims description 3
- 238000004891 communication Methods 0.000 description 4
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- 230000002159 abnormal effect Effects 0.000 description 3
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- 230000009133 cooperative interaction Effects 0.000 description 2
- 238000001514 detection method 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
- B60L53/60—Monitoring or controlling charging stations
- B60L53/63—Monitoring or controlling charging stations in response to network capacity
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
- B60L53/60—Monitoring or controlling charging stations
- B60L53/62—Monitoring or controlling charging stations in response to charging parameters, e.g. current, voltage or electrical charge
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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
- B60L53/80—Exchanging energy storage elements, e.g. removable batteries
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60S—SERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, OR MANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR
- B60S5/00—Servicing, maintaining, repairing, or refitting of vehicles
- B60S5/06—Supplying batteries to, or removing batteries from, 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
- 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 application relates to the technical field of power control, and provides an energy storage and charging integrated charging station and an energy storage and charging system. The power swapping station comprises: the power distribution control unit is used for accessing a power grid, and the energy storage unit comprises at least one energy storage battery; the energy storage unit is connected with the power distribution control unit, and the power distribution control unit is used for accessing at least one power utilization unit; and the power distribution control unit is used for controlling the power grid to charge the energy storage battery with the electric quantity smaller than the first preset electric quantity in the energy storage unit in a first preset time period, and controlling the energy storage unit with the electric quantity greater than or equal to the second preset electric quantity to supply power to the power utilization unit in a second preset time period. The energy storage and charging integrated power conversion station and the energy storage and charging integrated power conversion system can reduce the power operation cost and improve the utilization rate of power resources.
Description
Technical Field
The application relates to the technical field of power control, in particular to an energy storage and charging integrated charging station and an energy storage and charging system.
Background
At present, with the high-speed development of new energy vehicles, in order to solve the problem that the power battery of the new energy vehicle is difficult to charge, in the related art, the power battery is replaced through a battery replacement station, and the new energy vehicle is rapidly replaced, so that the problem that the power battery is difficult to charge is solved, and meanwhile, the service life of the power battery can be prolonged.
In the conventional battery replacement station, an energy storage battery in the battery replacement station is connected to a power grid, and the power grid charges the energy storage battery, so that when a power battery needs to be replaced, the power battery is replaced by the energy storage battery which is completely charged, and the replaced power battery is connected to the power grid as the energy storage battery to be charged. However, the energy storage battery of the power conversion station can only store energy, and the power operation cost is high. And the battery replacement frequency of the new energy automobile is not high, so that the energy storage battery may be in an idle state for a long time after charging is completed, the utilization rate of electric power resources is not high, and the waste of the electric power resources is caused.
Disclosure of Invention
The present application is directed to solving at least one of the technical problems occurring in the related art. Therefore, the application provides an energy storage and charging integrated power conversion station, which can reduce the power operation cost and improve the utilization rate of power resources.
The application also provides an energy storage charging and battery replacing system.
According to this application first aspect embodiment's integral type of charging of energy storage trades power station, includes:
the power distribution control unit is used for accessing a power grid, and the energy storage unit comprises at least one energy storage battery;
the energy storage unit is connected with the power distribution control unit, and the power distribution control unit is used for accessing at least one power utilization unit;
the power distribution control unit is used for controlling the power grid in a first preset time period to enable the electric quantity in the energy storage unit to be smaller than a first preset electric quantity the energy storage battery is charged, and in a second preset time period, the energy storage unit is used for controlling the electric quantity to be larger than or equal to a second preset electric quantity the energy storage unit supplies power to the power utilization unit.
The energy storage and charging integrated power conversion station provided by the embodiment of the application controls the power grid to charge the energy storage battery with the electric quantity smaller than the first preset electric quantity in the energy storage unit in the first preset time period through the power distribution control unit, controls the energy storage unit with the electric quantity larger than the second preset electric quantity to supply power to the power utilization unit in the second preset time period, and enables the power conversion station to form an intelligent micro-power grid.
According to an embodiment of the present application, the power distribution control unit is specifically configured to:
determining that the electric quantity stored in the energy storage unit is greater than or equal to a second preset electric quantity in a second preset time period, and determining the minimum quantity of the energy storage batteries required when the second preset electric quantity is met according to the electric quantity stored in each energy storage battery in the energy storage unit;
according to the minimum number, at least one corresponding target energy storage battery is obtained from the energy storage unit, and each target energy storage battery is controlled to supply power to the power utilization unit;
and the total electric storage quantity of each target energy storage battery meets the second preset electric quantity.
According to an embodiment of the application, the power distribution control unit is further configured to:
and determining that the electric storage quantity of the energy storage unit in the second preset time period is smaller than the second preset electric quantity, and controlling the power grid to supply power to the power utilization unit in the second preset time period.
According to an embodiment of the application, the second preset electric quantity is determined according to a required electric quantity of an electric device connected to the electric unit.
According to an embodiment of the present application, further comprising:
the bidirectional converter unit is connected with the energy storage battery and is used for converting the current output by the power grid when supplying power to the energy storage battery into the direct current required by the energy storage battery; converting the current output by the energy storage battery when the energy storage battery supplies power to the power utilization unit into alternating current and outputting the alternating current to the power distribution control unit;
the voltage conversion unit is connected to the power distribution control unit and is used for converting alternating current received from the power distribution control unit into direct current required by the power utilization unit.
According to an embodiment of the present application, the energy storage unit further includes a battery pack protocol conversion circuit, where the battery pack protocol conversion circuit is configured to perform protocol switching, and the protocol includes a charging protocol and a discharging protocol;
the battery pack protocol conversion circuit is connected with the power distribution control unit, and each energy storage battery is connected to the battery pack protocol conversion circuit in parallel.
According to an embodiment of the present application, further comprising:
the bidirectional metering ammeter is used for being connected to a power grid, is connected with the power distribution control unit and is used for acquiring first output power output by the power grid to the power distribution control unit and second output power output by the energy storage unit to the power grid;
the power distribution control unit is further configured to adjust at least one of the first output power and the second output power according to the measurement results of the first output power and the second output power.
According to an embodiment of the present application, the first preset time period is a power consumption valley period or a power consumption level period of the power grid;
the second preset time period is the electricity utilization peak period of the power grid.
According to this application second aspect embodiment's energy storage charging trades electric system, includes:
an electricity utilization unit and the energy storage and charging integrated battery replacement station according to any one of the above embodiments.
According to one embodiment of the application, the power consuming unit comprises a charging subunit for charging the power consuming device.
One or more technical solutions in the embodiments of the present application have at least one of the following technical effects:
the power distribution control unit controls the power grid to charge the energy storage battery with the electric quantity smaller than the first preset electric quantity in the energy storage unit in the first preset time period, and controls the energy storage unit with the electric quantity larger than the second preset electric quantity to supply power to the power utilization unit in the second preset time period, so that the power exchange station forms an intelligent micro-power grid, the energy storage battery to be charged can be charged in the first preset time period, the power exchange requirement is met, meanwhile, the energy storage battery meeting the charging requirement is used for discharging in the second preset time period, the problem that the energy storage battery storing sufficient electric energy is idle to cause resource waste is avoided, the power operation cost can be reduced, the utilization rate of power resources is improved, and the cooperative interaction of the source grid charge and storage multi-party resources is realized.
Furthermore, the minimum number of the energy storage batteries required when the second preset electric quantity is met is determined according to the electric quantity stored by each energy storage battery in the energy storage unit, and the target energy storage batteries meeting the corresponding number of the second preset electric quantity are acquired from the energy storage unit based on the minimum number to supply power to the electricity utilization unit, so that the minimum number of the energy storage batteries meeting the charging requirement are controlled to discharge in the second preset time period, the number of the energy storage batteries discharging is controlled, and the consumption of the energy storage batteries is reduced.
Further, when the electric energy storage amount of the second preset time period is smaller than the second preset electric energy or the energy storage unit is detected to be abnormal, the power is supplied to the power distribution control unit through the control power grid, so that the power distribution control unit distributes the electric energy of the power grid to the power utilization unit, and the power utilization unit can normally utilize the electric energy.
Furthermore, the second is preset the electric quantity and is not less than the demand electric quantity of the electric device that inserts the power consumption unit to ensure that when utilizing the energy storage unit to supply power to the power consumption unit, the power consumption demand that the power consumption unit can be satisfied to the power supply volume.
Furthermore, through setting up two-way conversion unit, the realization is converted the alternating current of electric wire netting output into the direct current and is supplied with energy storage battery to and convert the direct current of energy storage battery output into the alternating current and feed back to the distribution control unit and distribute, thereby compare the scheme that adopts two one-way converters, the cost is lower, the construction degree of difficulty is littleer, it is more convenient to maintain, the use is also simpler.
Furthermore, the first preset time interval is the electricity utilization low-valley time interval or the electricity utilization level time interval of the power grid, and the second preset time interval is the electricity utilization peak time interval of the power grid, so that the serious dependence of high-power quick-charging station construction on electric power can be buffered, peak shifting and valley filling are realized, and the load and fluctuation of the power grid in the electricity utilization peak time interval are reduced.
Drawings
In order to more clearly illustrate the technical solutions in the present application or the prior art, the drawings needed for the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of an energy storage and charging integrated charging station provided in an embodiment of the present application;
fig. 2 is a schematic structural diagram of an energy storage and charging integrated battery charging station according to another embodiment of the present application;
FIG. 3 is a schematic structural diagram of a control unit provided in an embodiment of the present application;
fig. 4 is a schematic structural diagram of an energy storage charging and battery replacement system provided in the embodiment of the present application.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application clearer, the technical solutions of the present application will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present application, and it is obvious that the described embodiments are some, but not all embodiments of the present application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
Hereinafter, the energy storage and charging integrated battery replacement station and the energy storage and charging integrated battery replacement system provided by the embodiments of the present application will be described and explained in detail through several specific embodiments.
In one embodiment, an energy storage and charging integrated battery replacement station is provided. As shown in fig. 1, the energy storage and charging integrated battery replacement station provided in this embodiment includes:
the power distribution control unit 1 is used for accessing a power grid, and the energy storage unit 2 comprises at least one energy storage battery 11;
the energy storage unit 2 is connected with the power distribution control unit 1, and the power distribution control unit is used for accessing at least one power utilization unit 3;
the power distribution control unit 1 is used for controlling in a first preset time period the power grid 100 is right the electric quantity in the energy storage unit 2 is smaller than the first preset electric quantity the energy storage battery 11 is charged, and in a second preset time period, the control electric quantity is larger than or equal to the second preset electric quantity the energy storage unit 2 is to the power supply of the power utilization unit 3.
In one embodiment, the distribution control unit 1 may be used to access a european transformer of a utility grid via a 0.4V ac bus, so that power may be drawn from the grid. The energy storage unit 2 can be connected to the power distribution control unit 1 through a 0.4V alternating current bus, and interaction between the energy storage unit and the power distribution control unit 1 is achieved. The number of the energy storage batteries 11 that can be accommodated by the energy storage unit 2 can be set according to actual conditions. Illustratively, 8 energy storage batteries of 40kW may be disposed in the energy storage unit 2, and a space for 8 energy storage batteries of 60kW is reserved in the space. I.e. the energy storage unit 2 may be provided with 16 energy storage batteries when fully loaded.
The output of distribution control unit 1 is used for inserting at least one power consumption unit, and this power consumption unit can be for the consumer who is used for consuming the electric energy, like the heating and ventilation air conditioner that trades the power station, trade the lighting apparatus of power station etc. or can be for the battery charging outfit who charges with electrical apparatus, like the electric pile rifle etc. that fills that charges for new energy automobile's power battery.
The power distribution control unit 1 is used for controlling the energy storage unit 2 to charge or discharge and to distribute power. Specifically, the power distribution control unit 1 may include a control subunit 21 for controlling the energy storage unit 2 to perform charging or discharging, and a power distribution subunit 22 for performing power distribution. In a first preset time period, the control subunit 21 controls the distribution subunit 22 to distribute the electric energy received from the power grid to the energy storage battery 11 with electric quantity smaller than a first preset electric quantity, and charges the energy storage battery 11 until the electric quantity stored in the energy storage battery 11 reaches 100%, and then stops charging the energy storage battery 11. In the second preset time period, the control subunit 21 detects the electric energy storage amount of the energy storage unit 2, and if the electric energy storage amount of the energy storage unit 2 reaches the second preset electric energy amount, the control subunit 21 controls the energy storage unit 2 to discharge to the distribution subunit 22, and the distribution subunit 22 distributes the electric energy received from the energy storage unit 2 to at least one power consumption unit 3 which needs to use power, so as to supply power to the power consumption unit 3.
In an embodiment, the first preset time period may be a time period with small grid fluctuation, and the second preset time period may be a time period with large grid fluctuation. For example, after the fluctuation rule of the power grid is determined through historical power consumption data of the power grid, the power consumption valley period or the power consumption level period of the power grid is determined as a first preset time period. And determining the peak electricity utilization period of the power grid as a first preset time period. The electricity utilization period or the electricity utilization level period is a period when the power supply quantity of the power grid is not more than the preset electric quantity, or a period when the power price of the power grid is not more than the preset power price; and in the electricity utilization peak period, the period when the power supply amount of the power grid is greater than the preset electric quantity or the period when the power price of the power grid is greater than the preset power price is provided. Specifically, the electricity consumption valley period, the electricity consumption level period, and the electricity consumption peak period may be determined by the latest peak-to-valley electricity rate standard executed by the power grid company. Illustratively, the electricity consumption valley period, the electricity consumption level period and the electricity consumption peak period in the Guangdong region are respectively electricity consumption peak periods: 10:00-12:00, 14:00-19: 00; level segment period: 8:00-10:00, 12:00-14:00, 19:00-24: 00; electricity consumption valley period: 00:00-8:00.
In an embodiment, the first predetermined electric quantity and the second predetermined electric quantity may be set according to an actual situation. For example, the first preset amount of power may be fifty percent or the like of the total power capacity of the energy storage batteries 11, and the second preset amount of power may be fifty percent or the like of the total power storage amount of each energy storage battery 11 in the energy storage unit 2.
It can be understood that when the distribution control unit 1 controls the energy storage unit 2 to supply power to the power utilization unit 3 in the second preset time period, the power grid stops supplying power to the energy storage unit 2 and the power utilization unit 3.
The power distribution control unit controls the power grid to charge the energy storage battery with the electric quantity smaller than the first preset electric quantity in the energy storage unit in the first preset time period, the energy storage unit with the electric quantity larger than the second preset electric quantity is controlled to supply power to the power utilization unit in the second preset time period, so that the power conversion station forms an intelligent micro-power grid, the energy storage battery to be charged can be charged in the first preset time period, the power conversion requirement is met, the energy storage battery meeting the charging requirement is used for discharging in the second preset time period, resource waste caused by idling of the energy storage battery with sufficient electric energy is avoided, the power operation cost can be reduced, the utilization rate of power resources is improved, and the cooperative interaction of source grid charge and storage multi-party resources is realized.
Meanwhile, the first preset time interval is the electricity utilization valley time interval or the electricity utilization level time interval of the power grid, and the second preset time interval is the electricity utilization peak time interval of the power grid, so that the serious dependence of the construction of a high-power quick charging station on the electric power can be buffered, the peak load shifting can be realized, and the load and the fluctuation of the power grid in the electricity utilization peak time interval can be reduced.
In order to reduce the consumption of the energy storage battery 11 in the process of controlling the energy storage unit 2 to supply power to the power utilization unit 3, in an embodiment, the power distribution control unit 1 is specifically configured to:
determining that the electric storage capacity of the energy storage unit 2 is greater than or equal to a second preset electric quantity in a second preset time period, and determining the minimum number of the energy storage batteries 11 required when the second preset electric quantity is met according to the electric storage capacity of each energy storage battery 11 in the energy storage unit 2;
according to the minimum number, at least one corresponding target energy storage battery is obtained from the energy storage unit 2, and each target energy storage battery is controlled to supply power to the power utilization unit 3;
and the total electric storage quantity of each target energy storage battery meets the second preset electric quantity.
In an embodiment, during the second preset time period, the control subunit 21 may detect the amount of electricity stored in the energy storage unit 2. If the power storage amount of the energy storage unit is greater than or equal to the second preset power amount, it indicates that the energy storage unit 2 can meet the power supply requirement, and at this time, the control subunit 21 may detect the power storage amount of each energy storage battery 11 in the energy storage unit 2, so as to determine the minimum number of the energy storage batteries 11 required when meeting the power supply requirement based on the power storage amount of each energy storage battery 11. If including three energy storage battery 11 in the energy storage unit 2, three energy storage battery 11's electric quantity of storage is 10kW, 20kW, 30kW respectively, and the second is preset electric quantity and is 20kW, and the energy storage battery that this moment single electric quantity of storage is 20kW or 30kW alright satisfy the 20kW demand, therefore the minimum number of the energy storage battery 11 that needs when can confirm satisfying the power demand is 1. If the electric storage capacity of the three energy storage batteries 11 is 10kW, 20kW, 30kW, and the second preset electric storage capacity is 40kW, the energy storage batteries that at least need one electric storage capacity to be 10kW and one electric storage capacity to be 30kW can meet the 40kW demand, so that it is determined that the minimum number of the energy storage batteries 11 required when the power supply demand is met is 2.
In an embodiment, after determining the minimum number of the energy storage batteries 11 required to meet the power supply requirement, the control subunit 21 may select a corresponding number of the energy storage batteries 11 meeting the power supply requirement from the energy storage units 2 as target energy storage batteries, and control each target energy storage battery to discharge to the distribution subunit 22, so that the distribution subunit 22 distributes the electric energy received from each target energy storage battery to at least one electricity utilization unit 3 requiring electricity.
The minimum number of the energy storage batteries required when the second preset electric quantity is met is determined according to the electric quantity stored by each energy storage battery in the energy storage unit, the target energy storage batteries meeting the corresponding number of the second preset electric quantity are acquired from the energy storage unit based on the minimum number to supply power to the electricity utilization unit, so that the energy storage batteries meeting the charging requirement in the minimum number are controlled to discharge in the second preset time period, the number of the energy storage batteries discharging is controlled, and the consumption of the energy storage batteries is reduced.
In an embodiment, the power distribution control unit 1 is further configured to determine that the electric quantity of the energy storage unit 2 cannot meet the charging requirement when detecting that the electric quantity stored in the energy storage unit 2 in the second preset time period is smaller than the second preset electric quantity, or control the power grid to supply power to the power utilization unit in the second preset time period when detecting that the energy storage unit 2 is abnormal. Specifically, when the control subunit 21 detects that the electric energy storage amount of the second preset time period is smaller than the second preset electric energy or detects that the energy storage unit 2 is abnormal, the control subunit controls the power grid to supply power to the distribution subunit 22, so that the distribution subunit 22 distributes the electric energy of the power grid to the power utilization unit, and the power utilization unit can normally utilize the power.
In order to meet the power consumption requirement of the power consumption unit, in an embodiment, the second preset power amount may be determined according to a required power amount of a power consumption device connected to the power consumption unit. Specifically, the second is predetermine the electric quantity and is not less than the demand electric quantity that inserts the power consumption unit with the electric device to ensure when utilizing the energy storage unit to supply power to the power consumption unit, the power demand that the power consumption unit can be satisfied to the power supply volume.
In an embodiment, as shown in fig. 2, the power distribution subunit 21 in the power distribution control unit 1 may be an ac power distribution cabinet, which is connected to a power grid through a 0.4KV ac bus and is connected to the battery power distribution cabinet 200 of the energy storage unit 2 through the 0.4KV ac bus, and the battery power distribution cabinet 200 of the energy storage unit 2 is connected in parallel to each energy storage battery 11 in the energy storage unit 2. Since the energy storage battery 11 stores direct current and the distribution subunit 21 distributes alternating current, an AC/DC converter may also be provided between the energy storage battery 11 and the distribution subunit 21. When the energy storage battery 11 supplies power to the power consumption unit 3, the direct current needs to be converted into alternating current to be fed back to the power distribution subunit 21, and then the power distribution subunit 21 distributes the electric energy to the power consumption unit. Therefore, a DC/AC inverter is also provided between the energy storage battery 11 and the distribution subunit 21. In consideration of the fact that two current conversion devices are needed to be adopted for direct current conversion and alternating current conversion respectively, the use cost is greatly increased, the wiring difficulty is increased, and the use or maintenance in the future becomes complicated. To remotely monitor the conversion, a plurality of communication lines are needed to manage one converter. This increases the use difficulty, increases the use cost, is unfavorable for a large amount of popularization and application. For this purpose, in an embodiment, as shown in fig. 2, the bidirectional converter unit 31 is further included, connected to the energy storage battery 11, so as to be connected between the energy storage battery 11 and the distribution electronic unit 21, and is configured to convert the current output when the power grid 100 supplies power to the energy storage battery 11 into the direct current required by the energy storage battery 11; and a distribution subunit 21 for converting the current output by the energy storage battery 11 when supplying power to the power consumption unit 3 into alternating current and outputting the alternating current to the distribution control unit. The bidirectional converter unit 31 can be an AC/DC bidirectional converter, one energy storage battery is correspondingly connected with one bidirectional converter unit 31, so that the alternating current output by the power grid is converted into the direct current to be supplied to the energy storage battery, and the direct current output by the energy storage battery is converted into the alternating current to be fed back to the power distribution electronic unit 21 for distribution.
In an embodiment, when the energy storage unit 2 supplies power to the power consumption unit 3, the direct current is first converted into alternating current, and then the power distribution subunit 21 distributes the electric energy, so that the power distribution subunit 21 of the power distribution control unit 1 is further connected to the voltage conversion unit 32, which is configured to convert the alternating current received from the power distribution subunit 21 of the power distribution control unit 1 into direct current required by the power consumption unit 3 to supply power to the power consumption unit.
In an embodiment, as shown in fig. 3, the control subunit 21 may be a GWC100 controller, and is configured to be communicatively connected to the power consuming unit 3, and to be communicatively connected to the battery pack protocol conversion circuit 33 and the bidirectional converter unit 31 of the energy storage unit 2. The battery pack protocol conversion circuit 33 is configured to perform protocol switching, where the protocol includes a charging protocol and a discharging protocol. Each energy storage battery 11 is connected in parallel to the battery pack protocol conversion circuit 33. The battery pack protocol conversion unit 33 may also be in communication connection with the bidirectional converter unit 31, for example, communication connection is achieved through a CAN bus, so that the energy storage battery 11 may communicate with the bidirectional converter unit 31 through the battery pack protocol conversion unit 33 to achieve charging and discharging control.
Illustratively, the control subunit 21 may be communicatively connected to the power consumption unit 3 and the bidirectional converter unit 31 through an RS485 communication cable, and connected to the battery pack protocol conversion unit 33 through a CAN bus.
In an embodiment, the control subunit 21 may further be linked with the display 300 and the server 400, for displaying the detected power data through the display, and sending to the server 400 for monitoring by the server.
In one embodiment, in order to prevent the energy storage battery 11 from sending the converted ac power to the power grid during the process of outputting the electric energy to the power distribution subunit 22, which causes generation of reverse power, harmonic pollution to the power grid, and grid voltage fluctuation, in one embodiment, as shown in fig. 2 and fig. 3, a bidirectional metering ammeter 34 connected to the power grid is further included, and the bidirectional metering ammeter 34 is connected to the power distribution subunit 21 and the control subunit 22 of the power distribution control unit 1, and is configured to obtain a first output power output from the power grid 100 to the power distribution control unit 1, and a second output power output from the energy storage unit 2 to the power grid 100.
The power distribution control unit 1 is further configured to adjust at least one of the first output power and the second output power according to the measurement results of the first output power and the second output power.
In one embodiment, in order to prevent the energy storage unit 2 from reversely generating electricity, the energy storage and charging integrated electricity conversion station performs reverse current detection through the bidirectional metering electricity meter 34, and meters the amount of electricity consumed by the power grid, i.e., the first output power, and the amount of electricity fed into the power grid, i.e., the second output power. The bidirectional metering ammeter 34 sends the metered first output power and the metered second output power to the control subunit 22 of the power distribution control unit 1, so that the control subunit 22 adjusts the first output power and/or the second output power according to the first output power and the second output power, thereby avoiding occurrence of reverse power and avoiding influence on a power grid.
In an embodiment, as shown in fig. 4, there is further provided an energy storage charging and battery replacement system, including:
the power utilization unit 3 and the energy storage and charging integrated battery replacement station according to any one of the above embodiments.
Wherein the power consumption unit 3 comprises a charging subunit for charging the power consumption appliance. If for the electric pile rifle that fills that new energy automobile's power battery charges.
Through the above description of the embodiments, those skilled in the art will clearly understand that each embodiment can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware. With this understanding in mind, the above-described technical solutions may be embodied in the form of a software product, which can be stored in a computer-readable storage medium such as ROM/RAM, magnetic disk, optical disk, etc., and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the methods described in the embodiments or some parts of the embodiments.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions in the embodiments of the present application.
Claims (10)
1. The utility model provides an energy storage integral type that charges trades power station which characterized in that includes:
the power distribution control unit is used for accessing a power grid, and the energy storage unit comprises at least one energy storage battery;
the energy storage unit is connected with the power distribution control unit, and the power distribution control unit is used for accessing at least one power utilization unit;
the power distribution control unit is used for controlling the power grid in a first preset time period to enable the electric quantity in the energy storage unit to be smaller than a first preset electric quantity the energy storage battery is charged, and in a second preset time period, the energy storage unit is used for controlling the electric quantity to be larger than or equal to a second preset electric quantity the energy storage unit supplies power to the power utilization unit.
2. The energy storage and charging integrated charging station as claimed in claim 1, wherein the power distribution control unit is specifically configured to:
determining that the electric storage quantity of an energy storage unit is larger than or equal to a second preset electric quantity in a second preset time period, and determining the minimum quantity of the energy storage batteries required when the second preset electric quantity is met according to the electric storage quantity of each energy storage battery in the energy storage unit;
according to the minimum number, at least one corresponding target energy storage battery is obtained from the energy storage unit, and each target energy storage battery is controlled to supply power to the power utilization unit;
and the total electric storage quantity of each target energy storage battery meets the second preset electric quantity.
3. The energy storage and charging integrated charging station as claimed in claim 1, wherein the power distribution control unit is further configured to:
and determining that the electric storage quantity of the energy storage unit in the second preset time period is smaller than the second preset electric quantity, and controlling the power grid to supply power to the power utilization unit in the second preset time period.
4. The energy storage and charging integrated power changing station as claimed in any one of claims 1 to 3, wherein the second preset electric quantity is determined according to a required electric quantity of an electric device connected to the electric unit.
5. The energy storage and charging integrated charging station as claimed in any one of claims 1 to 3, further comprising:
the bidirectional converter unit is connected with the energy storage battery and is used for converting the current output by the power grid when supplying power to the energy storage battery into the direct current required by the energy storage battery; converting the current output by the energy storage battery when the energy storage battery supplies power to the power utilization unit into alternating current and outputting the alternating current to the power distribution control unit;
the voltage conversion unit is connected to the power distribution control unit and is used for converting alternating current received from the power distribution control unit into direct current required by the power utilization unit.
6. The energy storage and charging integrated power swapping station as claimed in claim 1, wherein the energy storage unit further comprises a battery pack protocol conversion circuit, the battery pack protocol conversion circuit is used for switching protocols, and the protocols comprise a charging protocol and a discharging protocol;
the battery pack protocol conversion circuit is connected with the power distribution control unit, and each energy storage battery is connected to the battery pack protocol conversion circuit in parallel.
7. The energy storage and charging integrated charging station as recited in claim 1, further comprising:
the bidirectional metering ammeter is used for being connected to a power grid, is connected with the power distribution control unit and is used for acquiring first output power output by the power grid to the power distribution control unit and second output power output by the energy storage unit to the power grid;
the power distribution control unit is further configured to adjust at least one of the first output power and the second output power according to the measurement results of the first output power and the second output power.
8. The energy storage and charging integrated battery replacement station as claimed in claim 1, wherein the first preset time period is a power utilization valley period or a power utilization level period of the power grid;
the second preset time period is the peak electricity utilization period of the power grid.
9. An energy storage charging and battery replacing system, comprising:
an electricity utilization unit and an energy storage and charging integrated power conversion station as claimed in any one of claims 1 to 8.
10. The energy storage charging and replacing system as claimed in claim 9, wherein the power consuming unit comprises a charging subunit for charging a power consuming device.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210769709.2A CN115027316A (en) | 2022-07-01 | 2022-07-01 | Energy storage and charging integrated battery replacement station and energy storage and charging battery replacement system |
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| CN202210769709.2A CN115027316A (en) | 2022-07-01 | 2022-07-01 | Energy storage and charging integrated battery replacement station and energy storage and charging battery replacement system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024067859A1 (en) * | 2022-09-30 | 2024-04-04 | 奥动新能源汽车科技有限公司 | Battery swap station, charging control method, and electronic device and computer storage medium |
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2022
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024067859A1 (en) * | 2022-09-30 | 2024-04-04 | 奥动新能源汽车科技有限公司 | Battery swap station, charging control method, and electronic device and computer storage medium |
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