CN112406582A - Light storage, charging and replacement integrated heavy truck battery replacement container and charging method thereof - Google Patents
Light storage, charging and replacement integrated heavy truck battery replacement container and charging method thereof Download PDFInfo
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- CN112406582A CN112406582A CN202011260949.7A CN202011260949A CN112406582A CN 112406582 A CN112406582 A CN 112406582A CN 202011260949 A CN202011260949 A CN 202011260949A CN 112406582 A CN112406582 A CN 112406582A
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- 238000006243 chemical reaction Methods 0.000 claims abstract description 19
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- 238000010276 construction Methods 0.000 abstract description 4
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- 238000004146 energy storage Methods 0.000 description 3
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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
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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
- B60L53/51—Photovoltaic means
-
- 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
- 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
- B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
- B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/18—Arrangements for adjusting, eliminating or compensating reactive power in networks
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/28—Arrangements for balancing of the load in a network by storage of energy
- H02J3/32—Arrangements for balancing of the load in a network by storage of energy using batteries with converting means
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
- H02J3/46—Controlling of the sharing of output between the generators, converters, or transformers
- H02J3/48—Controlling the sharing of the in-phase component
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/02—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from ac mains by converters
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
- H02J7/35—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering with light sensitive cells
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
- H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
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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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/30—Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
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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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
- Y02E10/56—Power conversion systems, e.g. maximum power point trackers
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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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/30—Reactive power compensation
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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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E70/00—Other energy conversion or management systems reducing GHG emissions
- Y02E70/30—Systems combining energy storage with energy generation of non-fossil origin
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/10—Technologies relating to charging of electric vehicles
- Y02T90/12—Electric charging stations
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- 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
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
- Y04S20/20—End-user application control systems
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Supply And Distribution Of Alternating Current (AREA)
Abstract
The invention relates to a light storage, charging and replacing integrated heavy truck battery replacing container and a charging method thereof.A AC bus interface of an external power grid and a photovoltaic power station interface are connected in parallel and are converged into an energy management main controller and then are connected into an internal power grid; the internal power grid is connected with a plurality of energy management slave controllers and then is connected into corresponding battery bins, and the battery bins are provided with charge state detectors for measuring the electric quantity of batteries; the energy management slave controller receives battery electric quantity information of a corresponding battery bin and transmits the battery electric quantity information to the energy management master controller, and the energy management master controller allocates total charging power input to the internal power grid by the external power grid alternating current bus interface and the photovoltaic power station interface according to the battery electric quantity information. The invention has the advantages that the battery replacement container can be dispatched and butted with a power grid and a photovoltaic power station, so that the integrated construction of light storage, charging and replacement is realized, and the peak load shifting and the valley load shifting of power utilization are realized; meanwhile, the dependence of the power conversion station on the capacity of the power grid is reduced, and the power conversion station is more energy-saving and more environment-friendly.
Description
Technical Field
The invention relates to the technical field of replacement of batteries of heavy trucks, in particular to a light storage, charging and replacement integrated replacement container for batteries of heavy trucks and a charging method thereof.
Background
Along with the electric promotion, the state vigorously promotes the construction of the charging and battery replacing infrastructure, and encourages enterprises to research and develop battery replacing mode vehicle types. The power requirement of the truck is large, the pollution of the traditional truck using diesel oil as power is serious, and the electric driving of the heavy truck is necessary. The heavy truck has large battery capacity, the charging speed is slow under the same charging power, and the high-power charging also provides a challenge for the supply and demand balance of a power grid.
The existing heavy-duty battery is generally only used for heavy duty cards; the heavy weight and the volume are large, and the battery is difficult to move randomly, so that the single function of the rechargeable battery of the heavy truck in the prior art is determined.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and solve the problems that the requirements of heavy truck battery replacement on a power station are high and the load on a power grid is large.
In order to achieve the purpose, the invention provides a light storage, charging and conversion integrated heavy truck and conversion battery container which comprises an external power grid alternating current bus interface and a photovoltaic power station interface, wherein the external power grid alternating current bus interface and the photovoltaic power station interface are connected in parallel and are converged into an energy management main controller and then are connected into an internal power grid; the internal power grid is connected with a plurality of energy management slave controllers and then is connected into corresponding battery bins, and the battery bins are provided with charge state detectors for measuring the electric quantity of batteries; the energy management slave controller receives battery electric quantity information of a corresponding battery bin and transmits the battery electric quantity information to the energy management master controller, and the energy management master controller allocates total charging power input to the internal power grid by the external power grid alternating current bus interface and the photovoltaic power station interface according to the battery electric quantity information.
The photovoltaic power station generates electricity through solar energy. The photovoltaic power station is connected to the energy management main controller through a photovoltaic inverter, so that direct current generated by solar energy is converted into alternating current matched with an alternating current bus of an external power grid and the electrical frequency of the energy management main controller. An inverter is arranged between the energy management slave controller and the corresponding battery bin, so that conversion between alternating current of an internal power grid and direct current matched with battery charging is realized. The battery compartment for charging and discharging heavy truck batteries is intensively embedded in the container type cabinet, so that the centralized storage and the centralized access of the batteries in the battery compartment are realized.
Preferably, an inverter of the battery compartment for accessing an internal power grid is a bidirectional converter, and the bidirectional converter supports four-quadrant operation; the energy management slave controller also receives the instruction of the energy management master controller and controls the bidirectional converter of the corresponding battery bin so as to enable the battery therein to convert the input and the output of the internal power grid.
The four quadrant operated bidirectional converter allows bidirectional energy flow to a battery or an internal grid.
Preferably, the energy management main controller is additionally provided with an output end, and the output end is used for collecting the electric output of the photovoltaic power station and the internal power grid and outputting the electric output as a standby power supply.
The energy management main controller can be used as a conversion switching device, can realize switching of output of an external power grid alternating current bus to an output end or an internal power grid, and can also realize switching of a photovoltaic power station and the internal power grid, wherein the photovoltaic power station and the internal power grid are gathered and output to the output end or only output to the internal power grid.
Preferably, the energy management main controller respectively collects the external grid output power of the external grid alternating current bus interface and the external grid output power of the photovoltaic power station interface; the energy management master controller adjusts and distributes the information of the required output power of each battery according to the output power of the external network and the information of the electric quantity of each battery, and the energy management slave controller receives the information of the required output power and adjusts the electric output of the corresponding battery to the internal power grid according to the information of the required output power.
The measurement and collection of the output power of the external network can adopt a corresponding ammeter.
Preferably, the energy management slave controller receives the total charging power information collected by the energy management master controller, and adjusts the electrical output of the internal power grid to the corresponding battery by combining the total charging power information and the corresponding battery electric quantity information.
Through the coordination of the energy management main controller and the energy management main controller, the unified scheduling of the green self-power generation of the external power grid alternating current and the photovoltaic power station is realized, the long-time operation of high load is avoided, and the service lives of power grid equipment and batteries are benefited.
The battery in the battery bin can be used as an energy storage block by the aid of the four-quadrant running bidirectional converter, and the heavy truck battery can be used as an emergency standby power supply or an energy storage power station due to the large-capacity and high-power output characteristics of the heavy truck battery. The functions of peak clipping and valley filling, auxiliary peak regulation and frequency modulation, reactive compensation and standby power supply of the power conversion station are realized.
The light storage, charging and replacing integrated heavy truck battery replacement container battery charging method is adopted, and the charging distribution method comprises the following steps:
s1 the energy management main controller compares and judges whether the total required power of the battery compartment of the internal power grid is larger than the remaining available charging capacity of the internal power grid;
s2, if the total required power is larger than the residual available charging capacity, adjusting the total charging power to the residual available charging capacity; and if the total required power is less than or equal to the residual available charging capacity, adjusting the total charging power to the total required power.
Preferably, the remaining available charging capacity is (total available inverter capacity of all internal grids-total apparent power of available electrical devices in the internal grids) the power factor of the internal grid.
Through a special charging distribution method, the heavy truck power battery with high power and large capacity can realize accurate charging, and the impact of the high-power charging in the whole period on a power grid is avoided.
The invention has the advantages that the battery replacement container can be dispatched and butted with a power grid and a photovoltaic power station, so that the integrated construction of light storage, charging and replacement is realized, and the peak load shifting and the valley load shifting of power utilization are realized; meanwhile, the dependence of the power conversion station on the capacity of the power grid is reduced, and the power conversion station is more energy-saving and more environment-friendly.
Drawings
Fig. 1 is a schematic view of an optical storage, charging and replacing integrated heavy truck and battery replacing container of the present invention;
fig. 2 is an appearance schematic diagram of a container type cabinet of the light storage, charging and replacing integrated heavy truck and battery replacing container of the invention;
fig. 3 is a schematic view of a method for charging a battery of a light storage, charging and replacing integrated heavy truck and replacement battery container according to the present invention;
wherein:
1-external power grid alternating current bus interface 2-photovoltaic power station interface 3-energy management main controller
4-internal grid 5-energy management slave controller 6-battery compartment
61-bidirectional converter 7-battery 8-output end
9-container type cabinet
Detailed Description
The invention is further described below with reference to the following figures and specific examples.
According to the light storage, charging and replacing integrated heavy truck battery replacing container shown in fig. 2, the battery bin 6 for charging and discharging the heavy truck battery 7 is intensively embedded into the container type cabinet 9, so that the centralized storage and the centralized access of the battery 7 in the battery bin 6 are realized.
As shown in fig. 1, the light storage, charging and conversion integrated heavy truck and conversion battery container comprises an external power grid alternating current bus interface and a photovoltaic power station interface 2, wherein the photovoltaic power station is connected with a photovoltaic inverter to convert direct current into alternating current. The external power grid alternating current bus interface 1 and the photovoltaic power station interface 2 are connected in parallel and are converged into the energy management main controller 3, and then the internal power grid 4 is accessed; the internal power grid 4 is connected with a plurality of energy management slave controllers 5 and then is connected with corresponding battery bins 6, and the battery bins 6 are provided with charge state detectors 8 for measuring the electric quantity of batteries 7; the energy management slave controller 5 receives battery electric quantity information corresponding to the battery compartment 6 and transmits the battery electric quantity information to the energy management master controller 3, and the energy management master controller 3 allocates total charging power input to the internal power grid 4 by the external power grid alternating current bus interface 1 and the photovoltaic power station interface 2 according to the battery electric quantity information. The inverter of the battery compartment 6 for accessing the internal power grid 4 is a bidirectional converter 61, and the bidirectional converter 61 supports four-quadrant operation; the energy management slave controller 5 also receives the energy management master controller 3 instruction, and controls the bidirectional converter 61 corresponding to the battery compartment 6 to convert the battery 6 therein to the input and output of the internal power grid 4. The energy management slave controller 5 receives the total charging power information collected by the energy management master controller 1, and adjusts the electric output of the internal power grid 4 to the corresponding battery 7 by combining the total charging power information and the corresponding battery 7 electric quantity information.
The energy management main controller 3 is additionally provided with an output end 8, and the output end 8 is used for collecting the electric output of the photovoltaic power station and the internal power grid 4 and outputting the electric output as a standby power supply. The energy management main controller 3 respectively collects the external grid output power of the external grid alternating current bus interface 1 and the external grid output power of the photovoltaic power station interface 2; the energy management master controller 3 adjusts and distributes the required output power information of each battery 7 according to the output power of the external power grid and the electric quantity information of each battery 7, and the energy management slave controller 5 receives the required output power information and adjusts the electric output of the corresponding battery 7 to the internal power grid 4 according to the required output power information.
According to the method for charging the battery of the light storage, charging and replacing integrated heavy truck and battery replacing container shown in fig. 3, the light storage, charging and replacing integrated heavy truck and battery replacing container is adopted, and the charging distribution method comprises the following steps:
Wherein the remaining available charging capacity (total available inverter capacity of all internal grids 4-total apparent power of available electrical devices in the internal grids 4) is the power factor of the internal grid 4.
This light stores up fills trades integration heavily card and trades electric container is the modularized design, and each battery compartment 6 independent setting, inside electric wire netting 4 cable junction, easy dismounting. The energy management main controller 3 is adopted to realize the butt joint with a photovoltaic system and a mains supply system, and the integrated construction of light storage, charging and conversion is realized. The bidirectional converter 61 is adopted to support four-quadrant operation, the energy management main controller 3 and the energy management slave controller 5 are matched, the bidirectional converter can be used as a power distribution standby power supply, the peak clipping and valley filling functions are achieved, active power and reactive power of a bus can be adjusted, and the purposes of primary auxiliary frequency modulation and voltage adjustment can be achieved. The matched system can adopt a control system based on a Linux kernel, supports multithreading operation and supports various communication controls: modbus TCP, modbus rtu, CAN TCP/IP,101,104, etc. And the active/reactive conditions of the power grid can be detected by testing and connecting the alternating current of each branch, and active/reactive control compensation is carried out.
This light stores up fills trades integration heavy truck trades electric container's advantage lies in:
1) by adopting the modular design, the requirement of the power exchanging station on the occupied area is greatly reduced, and the survey success rate of the power exchanging station is improved.
2) The multi-element type: the energy storage and charging integrated design reduces the dependence of the battery replacement station on a power grid, gets rid of the pure load charging mode of the traditional battery replacement station, and realizes the functions of peak clipping, valley filling, auxiliary peak-load regulation, reactive compensation and standby power supply by utilizing the PCS four-quadrant operation mode.
3) Energy conservation: the photovoltaic energy conversion system can be combined with a photovoltaic new energy system, an EMS energy management system is combined, the dependence of the power conversion station on the capacity of a power grid is reduced, and the photovoltaic energy conversion system is more energy-saving and more environment-friendly.
While the preferred embodiments of the present invention have been described in detail, it will be understood by those skilled in the art that the invention is not limited to the embodiments disclosed, but is capable of numerous equivalents and substitutions, all of which are within the scope of the invention as defined by the appended claims.
Claims (7)
1. A light storage, charging and conversion integrated heavy truck conversion battery container comprises an external power grid alternating current bus interface and a photovoltaic power station interface, and is characterized in that the external power grid alternating current bus interface and the photovoltaic power station interface are connected in parallel and are converged into an energy management main controller and then are connected into an internal power grid; the internal power grid is connected with a plurality of energy management slave controllers and then is connected into corresponding battery bins, and the battery bins are provided with charge state detectors for measuring the electric quantity of batteries; the energy management slave controller receives battery electric quantity information of a corresponding battery bin and transmits the battery electric quantity information to the energy management master controller, and the energy management master controller allocates total charging power input to the internal power grid by the external power grid alternating current bus interface and the photovoltaic power station interface according to the battery electric quantity information.
2. The light storage, charging and conversion integrated heavy truck and conversion battery container according to claim 1, wherein an inverter of the battery compartment for accessing an internal power grid is a bidirectional converter, and the bidirectional converter supports four-quadrant operation; the energy management slave controller also receives the instruction of the energy management master controller and controls the bidirectional converter of the corresponding battery bin so as to enable the battery therein to convert the input and the output of the internal power grid.
3. The light storage, charging and replacing integrated heavy truck and replacing battery container as claimed in claim 2, wherein the energy management main controller is further provided with an output end for summarizing the electrical output of the photovoltaic power station and the internal power grid as a standby power output.
4. The light storage, charging and replacing integrated heavy truck and replacement battery container according to claim 3, wherein the energy management main controller respectively collects external grid output power of the external power grid alternating current bus interface and the photovoltaic power station interface; the energy management master controller adjusts and distributes the information of the required output power of each battery according to the output power of the external network and the information of the electric quantity of each battery, and the energy management slave controller receives the information of the required output power and adjusts the electric output of the corresponding battery to the internal power grid according to the information of the required output power.
5. The light storage, charging and replacing integrated heavy truck and battery replacing container as claimed in claim 1, wherein the energy management slave controller receives total charging power information collected by the energy management master controller, and adjusts the electrical output of the internal power grid to the corresponding battery by combining the total charging power information and the corresponding battery power information.
6. A method for charging batteries in an optical storage, charging and battery replacement integrated heavy truck and battery replacement container, which is characterized in that the optical storage, charging and battery replacement integrated heavy truck and battery replacement container as claimed in claim 1 is adopted, and the charging distribution method comprises the following steps:
s1 the energy management main controller compares and judges whether the total required power of the battery compartment of the internal power grid is larger than the remaining available charging capacity of the internal power grid;
s2, if the total required power is larger than the residual available charging capacity, adjusting the total charging power to the residual available charging capacity; and if the total required power is less than or equal to the residual available charging capacity, adjusting the total charging power to the total required power.
7. The charging method according to claim 6, wherein the remaining available charging capacity (total available inverter capacity of all internal grids-total apparent power of available electrical devices in the internal grids) is the power factor of the internal grid.
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