CN112383127A - Power-expandable modular portable energy storage power supply and control method thereof - Google Patents

Power-expandable modular portable energy storage power supply and control method thereof Download PDF

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Publication number
CN112383127A
CN112383127A CN202011104277.0A CN202011104277A CN112383127A CN 112383127 A CN112383127 A CN 112383127A CN 202011104277 A CN202011104277 A CN 202011104277A CN 112383127 A CN112383127 A CN 112383127A
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China
Prior art keywords
power
energy storage
direct current
machine
storage battery
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Pending
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CN202011104277.0A
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Chinese (zh)
Inventor
曹世宏
宁涛
胡国昌
张宇
丁建桥
刘辉
邵雷军
蒋帅
徐建明
余洋
王德佳
罗伟林
王亮
许东
闵凡奇
刘新伟
安石峰
朱陶庸
张晨
黄玉良
郭之泓
万烨
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shanghai Power Energy Storage Battery System Engineering Technology Co ltd
Shanghai Institute of Space Power Sources
32181 Troops of PLA
Original Assignee
Shanghai Power Energy Storage Battery System Engineering Technology Co ltd
Shanghai Institute of Space Power Sources
32181 Troops of PLA
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Application filed by Shanghai Power Energy Storage Battery System Engineering Technology Co ltd, Shanghai Institute of Space Power Sources, 32181 Troops of PLA filed Critical Shanghai Power Energy Storage Battery System Engineering Technology Co ltd
Priority to CN202011104277.0A priority Critical patent/CN112383127A/en
Publication of CN112383127A publication Critical patent/CN112383127A/en
Pending legal-status Critical Current

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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
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
    • G05F1/00—Automatic systems in which deviations of an electric quantity from one or more predetermined values are detected at the output of the system and fed back to a device within the system to restore the detected quantity to its predetermined value or values, i.e. retroactive systems
    • G05F1/66—Regulating electric power
    • G05F1/67—Regulating electric power to the maximum power available from a generator, e.g. from solar cell
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
    • H01M10/4257—Smart batteries, e.g. electronic circuits inside the housing of the cells or batteries
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/61—Types of temperature control
    • H01M10/613—Cooling or keeping cold
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/62—Heating or cooling; Temperature control specially adapted for specific applications
    • H01M10/623—Portable devices, e.g. mobile telephones, cameras or pacemakers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/65—Means for temperature control structurally associated with the cells
    • H01M10/655—Solid structures for heat exchange or heat conduction
    • H01M10/6551—Surfaces specially adapted for heat dissipation or radiation, e.g. fins or coatings
    • 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
    • H02J7/0042—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries characterised by the mechanical construction
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
    • H02S30/00—Structural details of PV modules other than those related to light conversion
    • H02S30/20—Collapsible or foldable PV modules
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
    • H01M2010/4271—Battery management systems including electronic circuits, e.g. control of current or voltage to keep battery in healthy state, cell balancing
    • 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
    • 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
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

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  • Engineering & Computer Science (AREA)
  • General Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Power Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Biophysics (AREA)
  • Secondary Cells (AREA)
  • Sustainable Energy (AREA)
  • Sustainable Development (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Automation & Control Theory (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)
  • Microelectronics & Electronic Packaging (AREA)

Abstract

The invention provides a power-expandable modular portable energy storage power supply and a control method thereof, wherein the power-expandable modular portable energy storage power supply comprises a rainproof box body, an energy storage battery module, a foldable photovoltaic panel and a control assembly; the rainproof box body is provided with a radiating fin and an electrical interface; the energy storage battery module is arranged at the bottom of the inner space of the rainproof box body; the foldable photovoltaic panel is arranged at the top of the inner space of the rainproof box body; the control assembly is arranged in the middle of the inner space of the rainproof box body and is respectively electrically connected with the energy storage battery module and the foldable photovoltaic panel. The invention has the advantages of portability, rain resistance, low temperature resistance and modularization and expandability.

Description

Power-expandable modular portable energy storage power supply and control method thereof
Technical Field
The invention relates to the technical field of energy storage, in particular to a power-expandable modular portable energy storage power supply and a control method thereof.
Background
With the national emphasis on industries or fields such as new energy, smart energy, energy storage and the like, the industries are rapidly developed in recent years, distributed power generation based on new energy such as photovoltaic and wind power is concerned more and more in the field of power industry, however, due to the regional limitation of wind power, the economy of small-area use in most non-northwest areas in China is poor, and therefore, the light storage system is mainly used inland.
Portable power supplies are favored by various industries for their mobility, versatility and portability: the portable power source with the mobility can provide electric energy for electronic equipment in various extreme environments such as mountaintops, forests, underwater and the like. The universal portable power supply can provide electric energy for various electronic equipment (mobile phones, notebook computers, small engineering equipment and the like). The portability is the biggest characteristic of portable power supplies, and the portable power supplies are suitable for various outdoor environments in smaller size and convenient carrying modes. The application field in the future is expanded to medical rescue, high-end electronic equipment (such as unmanned aerial vehicles), electric tools, mobile office and the like. However, at present, there is no mature portable light storage power supply with strong universality, strong compatibility, portability, expandability, and easy maintenance for the market.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a power-expandable modular portable energy storage power supply and a control method thereof.
The power-expandable modular portable energy storage power supply comprises a rainproof box body, an energy storage battery module 11, a foldable photovoltaic panel 2 and a control assembly;
the rainproof box body is provided with a radiating fin 5 and an electrical interface;
the energy storage battery module 11 is arranged at the bottom of the inner space of the rainproof box body;
the foldable photovoltaic panel 2 is arranged at the top of the inner space of the rainproof box body;
the control assembly is arranged in the middle of the inner space of the rainproof box body and is respectively electrically connected with the energy storage battery module 11 and the foldable photovoltaic panel 2.
Preferably, the rain-proof case comprises: an upper cover 1 and an outer box 2;
the upper cover 1 is connected with the outer box 2 to form the inner space;
the heat sink 5 and the electrical interface are disposed on the sidewall of the outer case 2.
Preferably, said foldable photovoltaic panel 2 comprises: a plurality of photovoltaic modules, MPPT modules and photovoltaic panel trays 3;
a plurality of photovoltaic module with the MPPT module electricity is connected, and set up in the photovoltaic board tray 3, photovoltaic board tray 3 is connected in the rain-proof box, the MPPT module with the control assembly electricity is connected.
Preferably, the control assembly comprises: the main control board 4 and the power all-in-one machine 9;
the main control board 4 is electrically connected with the power all-in-one machine 9.
Preferably, the circuit inside the power integration machine 9 includes: an inductor 15 and a transformer 16;
the top of the inductor 15 is provided with an inductor auxiliary radiating fin 8, the periphery of the transformer 16 is provided with a transformer auxiliary radiating fin 7, and a gap in the middle is filled and sealed through heat-conducting glue;
the inductance auxiliary cooling fin 8 and the transformer auxiliary cooling fin 7 are connected with the cooling fin 5.
Preferably, the power integration machine 9 includes: a main circuit and a control circuit;
the main circuit comprises a power circuit, an input/output filter circuit, a voltage and current detection circuit and a static switch arranged in the main circuit, wherein the power circuit, the input/output filter circuit and the voltage and current detection circuit are sequentially connected.
Preferably, the power circuit comprises a rectification circuit, an inverter circuit and a battery charging module;
the rectification circuit is mainly used for filtering and purifying input alternating current, removing interference components in a power grid and regulating voltage within a certain range;
the inverter circuit comprises an active inverter connected with a power grid at an alternating current side and a passive inverter connected with a load at the alternating current side;
the battery charging module provides a charging current to charge the energy storage battery module 11.
Preferably, the energy storage battery module 11 includes: BMS22, battery pack 24, and battery tray 23;
the BMS22 is electrically connected to the battery pack 24;
the BMS22 and the battery pack 24 are disposed in the battery tray 23.
Preferably, the energy storage battery module 11 further includes: battery case side gasket 17, heat sink sheet metal frame 18, external communication board 19 and internal communication board 20;
the battery case side gasket 17 fixes the battery pack 24;
the radiating fin sheet metal frame 18 fixes the radiating fin 5 and exchanges heat with the battery pack 24;
the external communication board 19 is connected between the BMS22 and the electrical interface;
the intercom board 20 is connected between the BMS22 and the battery pack 24.
According to the control method of the power-expandable modular portable energy storage power source provided by the invention, the method comprises the following steps: a direct current charging control method, an alternating current charging control method, a direct current discharging control method, or an alternating current discharging control method;
the direct current charging control method comprises the following steps: the direct-current output end of the MPPT module of the foldable photovoltaic panel 2 is connected with the direct-current end of the power all-in-one machine 9 of the control assembly and the direct-current input end of the BMS22 of the energy storage battery module in parallel to form a direct-current bus, and the foldable photovoltaic panel 2 charges the energy storage battery module 11 through the bus;
the alternating current charging control method comprises the following steps: connecting an alternating current input end of the power all-in-one machine, an inverter circuit of the power all-in-one machine, a direct current output end of the power all-in-one machine and a BMS direct current input end of the energy storage battery module in parallel to form an alternating current-to-direct current bus, and charging the energy storage battery module 11 after the commercial power is inserted;
the direct current discharge control method comprises the following steps: when the energy storage battery module is electrified, a BMS direct current output end of the energy storage battery module and a direct current end of the power all-in-one machine are connected in parallel to form a direct current bus, and the energy storage battery module charges a load through the direct current bus; when the energy storage battery module is not powered but the photovoltaic meets the load power, the direct current output end of the MPPT module is controlled by the main controller to be connected with the direct current end of the power all-in-one machine and the direct current input end of the BMS of the energy storage battery module in parallel to form a direct current bus, and the photovoltaic module charges the load through the bus; when the energy storage battery module is out of power but the photovoltaic can not meet the load power and the commercial power is available, the direct current output end of the MPPT module is controlled by the main controller to be connected with the direct current end of the power all-in-one machine and the direct current input end of the BMS of the energy storage battery module in parallel to form a direct current bus, the photovoltaic module charges the load through the bus, the alternating current input end of the power all-in-one machine, the inverter circuit of the power all-in-one machine, the direct current output end of the power all-in-one machine and the load are connected in; when the energy storage battery module is not powered or photovoltaic but has commercial power, connecting an alternating current input end of the power all-in-one machine, an inverter circuit of the power all-in-one machine, a direct current output end of the power all-in-one machine and a load in parallel to form an alternating current-to-direct current bus, and charging the load after the commercial power is inserted;
the alternating current discharge control method comprises the following steps: when the energy storage battery module is electrified, a BMS direct-current output end of the energy storage battery module, a direct-current end of the power all-in-one machine, an inverter circuit and an alternating-current output end of the power all-in-one machine are connected in parallel to form a direct-current to alternating-current bus, and the energy storage battery module charges a load through the direct-current to alternating-current bus; when the energy storage battery module is dead and the photovoltaic meets the load power, the direct-current output end of the MPPT module is connected with the direct-current end of the power all-in-one machine, the inverter circuit and the alternating-current output end of the power all-in-one machine in parallel to form a direct-current-to-alternating-current bus, and the photovoltaic module charges the load through the direct-current-to-alternating-current bus; when the energy storage battery module is in no power supply but the photovoltaic can not meet the load power and the commercial power is available, the direct current output end of the MPPT module is connected with the direct current end of the power all-in-one machine, the inverter circuit and the alternating current output end of the power all-in-one machine in parallel to form a direct current-to-alternating current bus, the photovoltaic module charges the load through the direct current-to-alternating current bus, meanwhile, the bypass module is started, and the commercial power is inserted into the load and then; when the energy storage battery module is not powered and has no photovoltaic and commercial power, the bypass module is controlled to be opened through the main control computer, and the commercial power is inserted to charge the load.
Compared with the prior art, the invention has the following beneficial effects:
the invention has the advantages of portability, rain resistance, low temperature resistance and modularization and expandability.
Drawings
Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:
fig. 1 is a schematic structural diagram of a power scalable modular portable energy storage power supply according to embodiment 1;
fig. 2 is an exploded view of the power scalable modular portable energy storage power supply of embodiment 1;
fig. 3 is a bottom layer structure diagram of the power scalable modular portable energy storage power supply of embodiment 1;
fig. 4 is a sheet metal frame diagram of a heat sink of the modular portable energy storage power supply with scalable power in embodiment 1;
FIG. 5 is a schematic structural diagram of a control assembly of the power scalable modular portable energy storage power supply of embodiment 1;
FIG. 6 is an exploded view of the control assembly of the power scalable modular portable energy storage power supply of embodiment 1;
fig. 7 is a schematic structural diagram of an energy storage battery module of the power scalable modular portable energy storage power supply according to embodiment 1;
fig. 8 is an exploded view of an energy storage battery module of the power scalable modular portable energy storage power supply of embodiment 1;
fig. 9 is a schematic diagram of an input/output panel of the power scalable modular portable energy storage power supply of embodiment 1;
in the figure:
1. an upper cover, 2, a foldable photovoltaic panel, 3, a photovoltaic panel tray, 4, a control assembly, 5, a heat sink, 6, an internal auxiliary heat sink, 7, a transformer auxiliary heat sink, 8, an inductance auxiliary heat sink, 9, a power all-in-one motherboard, 10, an all-in-one sheet metal assembly, 11, an energy storage battery module, 12, an outer box, 13, an information display panel, 14, an external wiring harness connection board, 15, an inductor, 16, a transformer, 17, a battery case side gasket, 18, a heat sink sheet metal frame, 19, an external communication board, 20, an internal communication board, 21, a parallel board, 22, a BMS, 23, a battery tray, 24, a battery pack, 25, an indicator light display panel, 26, a starting switch, 27, a first photovoltaic input interface, 28, a second photovoltaic input interface, 29, a mains supply input interface, 30, an alternating current output switch, 31, a direct current output switch, 32, an alternating current output interface, 33. a direct current output interface 34, a first parallel machine communication interface 35 and a second parallel machine communication interface.
Detailed Description
The present invention will be described in detail with reference to specific examples. The following examples will assist those skilled in the art in further understanding the invention, but are not intended to limit the invention in any way. It should be noted that it would be obvious to those skilled in the art that various changes and modifications can be made without departing from the spirit of the invention. All falling within the scope of the present invention.
Example 1
As shown in fig. 1 to 9, a power-scalable modular portable energy storage power supply includes a box, a foldable photovoltaic panel, a control assembly, an energy storage battery module, and an input/output panel, and specifically includes the following components: the photovoltaic power generation device comprises an upper cover 1, a foldable photovoltaic panel 2, a photovoltaic panel tray 3, a control assembly 4, a radiating fin 5, an internal auxiliary radiating plate 6, a transformer auxiliary radiating fin 7, an inductance auxiliary radiating fin 8, a power all-in-one machine mainboard 9, an all-in-one machine sheet metal assembly 10, an energy storage battery module 11, an outer box 12, an information display panel 13, an external wiring harness connecting plate 14, an inductor 15, a transformer 16, a battery case side gasket 17, a radiating fin sheet metal frame 18, an external communication board 19, an internal communication board 20, a parallel machine board 21, a BMS22, a battery tray 23, a battery pack 24, an indicator light display panel 25, a starting switch 26, an I photovoltaic input interface 27, a II photovoltaic input interface 28, a commercial power input interface 29, an AC output switch 30, a DC output switch 31, an AC output interface 32, a DC output interface 33, an I parallel machine. The solar water heater is characterized in that one side of the box body is provided with a radiating fin 5, and the box body has the capability of resisting rain; the energy storage battery module 11 is positioned at the lower part of the box body and consists of a low-temperature power type lithium ion battery pack 24 and a BMS22, and the foldable photovoltaic panel 2 is positioned at the top of the box body and consists of a flexible photovoltaic panel and an MPPT; the control assembly is positioned in the middle of the box body, consists of a main control board 4 and a power all-in-one machine 9, and is used for integrally controlling the input and output of alternating current and direct current; the input and output panel 13 is positioned on the box body at the other side of the radiating fin 5 and has the function of AC/DC input and output.
The dc input electrical interface requirements of the scalable power modular portable energy storage power source include: the voltage is 30V-50V, and the input power is more than or equal to 400W.
The ac input electrical interface requirements of the scalable power modular portable energy storage power source include: the voltage AC 230X (1 + -20%) V, the frequency 50X (1 + -1%) Hz, and the input power is more than or equal to 1000W.
The alternating current output electrical interface requirements of the power scalable modular portable energy storage power source include: rated power: 1000W, rated voltage: 230V, rated current: 4.33A, rated frequency: 50 Hz.
The requirements of the direct current output electrical interface of the power-expandable modular portable energy storage power source comprise: output voltage range: 48X (1. + -. 15%) V.
The parallel networking capability of the power extensible modular portable energy storage power supply is as follows: not less than 4 sets of power extensible modular portable energy storage power supplies can be stably connected in parallel to form a network, and the total output power is more than or equal to 3000W.
The internal heat dissipation form of the power extensible modular portable energy storage power supply is as follows: the product needs to meet the anti-rain capability: the rainfall is endured for 1h with the rainfall intensity of 2mm/min and the wind speed of 18 m/s; therefore, the outer box body of the product needs to be in a basically sealed state, the main heating source of the product is an inductor 15 and a transformer 16 in the power all-in-one machine 9, and the heat dissipation is realized by the following steps: the top of the inductor 15 is provided with an inductor auxiliary radiating fin 8, the periphery of the transformer 16 is provided with a transformer auxiliary radiating fin 7, and the gap in the middle is filled and sealed by heat-conducting glue, so that the heat of the inductor 15 and the transformer 16 is effectively transmitted to the upper surface of the internal auxiliary radiating plate 6, and then the heat is transmitted to the radiating fin 5 through the internal auxiliary radiating plate 6, so that the internal heat can naturally convect with the external air, and the radiating function of the whole machine is achieved.
As shown in fig. 1 to 2, the box body comprises an upper cover 1 and an outer box 12, the back side of the box body comprises a radiating fin 5, the front side of the box body is provided with an input/output panel 13, and the box body has the waterproof grade capability of IPX 2; the box body is internally provided with an upper layer, a middle layer and a lower layer, the upper layer is a foldable photovoltaic panel, the middle layer is a control assembly, and the lower layer is an energy storage battery module.
As shown in fig. 2, the foldable photovoltaic panel includes 8 photovoltaic modules, an MPPT module, and a photovoltaic panel tray 3, and its peak power generation power is greater than 400W, and the open-circuit voltage range is: 30V-50V, and the efficiency (effective area) of the photovoltaic module is not less than 18%; the spreading time is not more than 5min/2 people, and the withdrawing time is not more than 5min/2 people.
Furthermore, the photovoltaic module adopts a flexible solar panel with the efficiency of 18%, and the peak power generation power is more than 200W.
Further, the MPPT module is connected with the photovoltaic module and the power all-in-one machine 9, and the input direct current power of the MPPT module is more than or equal to 400W; input-output voltage range: 20V to 60V; the overvoltage and overcurrent protection is realized; the maximum conversion efficiency is more than or equal to 99 percent.
As shown in fig. 2 and 5 to 6, the control assembly includes a main control board 4, a power integrated machine 9, an internal auxiliary heat dissipation plate 6, a transformer auxiliary heat dissipation plate 7, an inductance auxiliary heat dissipation plate 8, and an integrated machine metal plate assembly 10.
Further, the main control board 4 controls the working state of the power all-in-one machine 9 mainly by detecting each signal of the power all-in-one machine 9, including detecting the voltage frequency of the input commercial power, the voltage current output by the power all-in-one machine 9, the current of the power device, and the like.
Furthermore, the main control board 4 has 1 way of CAN bus, 1 way of RS485 bus and BMS22 to communicate, has 1 way of RS232 bus and power all-in-one machine 9 to communicate, reserves 1 way of CAN bus debugging communication interface.
The power integration machine 9 is composed of a main circuit and a control circuit. The main circuit comprises a power circuit, an input/output filter circuit, a voltage/current detection circuit, a static switch and the like.
Furthermore, the power circuit is composed of a rectification circuit, an inverter circuit and a battery charging module. The rectification circuit is mainly used for filtering and purifying input alternating current, removing interference components in a power grid and regulating voltage within a certain range. The inverter circuit comprises an active inverter connected with the alternating current side of the power grid and a passive inverter connected with the load on the alternating current side. The battery charging module can provide 60VDC/20A of charging current to charge the storage battery.
Furthermore, the input and output filter circuit has the functions of filtering and purifying input and output alternating current and direct current, removing interference components and regulating voltage.
Furthermore, the voltage and current detection circuit transmits the input and output alternating current and direct current voltage and current to the main control panel.
Furthermore, the static switch is useful in places such as a maintenance bypass, an automatic bypass, and mutual switching between the mains supply and the inverter output in the power all-in-one machine, so that the power all-in-one machine 9 and a load are protected on one hand, and the reliability of a system is enhanced on the other hand to ensure uninterrupted power supply to the load.
Furthermore, when the load of the power all-in-one machine 9 exceeds the limit or other components such as an inverter circuit and the like are in fault, the power all-in-one machine 9 is directly powered by a bypass. Once the power supply of the power grid is interrupted, the storage battery immediately supplies power to the inverter so as to ensure that the power all-in-one machine 9 outputs alternating-current voltage uninterruptedly.
As shown in fig. 2 to 4 and 7 to 8, the energy storage battery module 11 includes a battery case side gasket 17, a heat sink sheet metal frame 18, an external communication board 19, an internal communication board 20, a parallel board 21, a BMS22, a battery tray 23, and a battery pack 24.
Further, the battery case side gasket 17 plays a role of fixing the battery pack 24.
Further, the heat sink sheet metal frame 18 functions to fix the heat sink 5 and performs heat exchange with the battery pack 24.
Further, the external communication board 19 can realize communication between the BMS22 and the main controller 4.
Further, the internal communication board 20 may enable communication between the battery pack 24 and the BMS 22.
Furthermore, the parallel board 21 means that one energy storage battery module 11 can be connected with four power all-in-one machines 9, the four power all-in-one machines 9 are connected in parallel, so that the system has 3000W output capacity, a four-to-three hot backup mode is adopted for parallel operation, one circuit is allowed to fail, measures are taken on a control circuit, a failed adjusting module automatically quits a power supply network, and normal operation of other modules is not influenced.
Further, the BMS22 have protection and recovery functions such as single overvoltage/undervoltage, total voltage undervoltage/overvoltage, charging/discharging overcurrent, high temperature, low temperature, short circuit, and the like. The SOC can be accurately measured in the charging and discharging process (SOC estimation deviation control is less than or equal to 10%), and the SOH health state statistics can be realized. And voltage balance in the charging process is realized. And the data communication is carried out with the main control computer 4 through CAN or RS485 communication, and parameter configuration and data monitoring are carried out.
Further, the BMS22 has an SOC correction function, wherein when the cell voltage reaches 4.15V, the corrected SOC is 93%; when the cell voltage protection is triggered, correcting the SOC to be 100%; when the cell voltage is discharged to 2.65%, the corrected SOC is 8%; when the single under-voltage protection is triggered, the corrected SOC is 0%.
Further, the BMS22 has a function of controlling start-stop heating, wherein when the lowest temperature of the battery reaches a heating threshold or receives a heating control command sent by the main control computer 4, the heating function is started; the heating function is stopped when the communication with the main control computer 4 is interrupted or the battery temperature reaches a stop temperature set point or the main control board 4 sends a stop heating control command or the BMS22 is re-powered.
Furthermore, the battery tray 23 and the battery case side gasket 17 play a role in fixing the battery pack 24.
Further, the battery pack 24 mainly comprises a series-parallel battery module and a heating band, and the discharge energy of the battery pack is greater than 2000 Wh. The device can discharge for 20 minutes at the low temperature of-41 ℃ under the condition of 500W, and has the function of charging an alternating current and direct current power supply.
Furthermore, the insulation design of the battery pack 24 includes that polyimide insulation films are adhered to the side faces of the storage battery, and insulation pads are arranged in the sleeves. The outer leakage parts of the lead jumper are all coated with silicon rubber for insulation, and insulating sleeves are embedded in installation corners of the battery pack 24 connected with other components.
Further, the strength design of the battery pack 24 includes glue filling between the battery cells and the base plate through the gap in the sleeve to improve the strength connection. A layer of elastic base plate is arranged between the storage battery and the top cover, and the top cover side plate and the bottom plate can be tightly assembled and connected by adjusting the compression amount of the base plate.
Further, the electrical interface design of the battery pack 24 includes the use of voltage sampling lines, temperature sampling lines, total positive power, total negative power, and heating wire harnesses in the battery pack 24. And is equipped with 2 electric connectors with different functions for realizing the functions of power, sampling, balancing and the like.
As shown in fig. 9, the input/output panel 13 includes an indicator display panel 25, a start switch 26, an I photovoltaic input interface 27, an II photovoltaic input interface 28, a utility power input interface 29, an ac output switch 30, a dc output switch 31, an ac output interface 32, a dc output interface 33, an I parallel communication interface 34, and an II parallel communication interface 35.
Further, the indicator light display panel 25 includes an operation indicator light, a fault indicator light, an ac input indicator light, a photovoltaic input indicator light, an ac output status indicator light, a battery power indicator light, and the like.
Furthermore, the running indicator light is controlled by the main control machine and is always on when the system is in a self-checking mode, a mains supply mode and a fault mode; when the SOC is more than or equal to 20% in a low-power consumption or no commercial power mode, the LED lamp is normally on; if SOC is less than 20%, flickering every 1S; when the user presses the stop button, the main control board normally executes the shutdown process and then extinguishes.
Further, the fault indicator lamp is controlled by the main control machine 4, and is normally turned off when the system is in a self-checking mode, a mains supply mode, a non-mains supply mode and a low-power mode; when the system is in a failure mode and is a failure caused by the BMS, the system is always on; when the system is in a fault mode and faults are caused by the power all-in-one machine, the system flickers every 500 ms; when the system is in a fault mode and faults caused by MPPT (maximum power point tracking), flickering every 3 s; when the system is in a failure mode and a failure is caused by the main control panel, the system flickers every 10 s; and after normal shutdown, turning off the power supply.
Furthermore, the alternating current input indicator light is controlled by the main control machine, and is normally on when the alternating current input state is detected in the starting state; when the AC input state is not detected, the circuit is extinguished; and after normal shutdown, turning off the power supply.
Furthermore, the photovoltaic input indicator light is controlled by the main control machine and is always on when photovoltaic input exists; no photovoltaic input, and extinguishing; when the MPPT working mode is normal shutdown, the input voltage is not less than 20V, and the MPPT is normally on when the input voltage is photovoltaic input; the input voltage is less than 20V, and the lamp is extinguished; when the MPPT working mode is the working mode, the main control board detects that the MPPT communication is normal and the output power of the photovoltaic panel is more than or equal to 100W, keeps 10 times of detection and is normally on; the master control board detects that the MPPT communication is normal and the output power of the photovoltaic panel is less than 100W, keeps detecting for 10 times and extinguishes; when the master control board detects that the MPPT communication is abnormal, the MPPT communication is extinguished; and after normal shutdown, turning off the power supply.
Further, the alternating current output state indicator lamp is controlled by the main control machine, and flickers every 1s after the alternating current output switch is started; the power integrated machine is normally on until the alternating current output frequency of the power integrated machine is not 0; when the AC output switch is switched off, the AC output switch is normally turned off; and other states, normally off.
Furthermore, the battery electric quantity indicator lamp is controlled by the main control machine, when the battery is charged, the SOC is more than or equal to 0 and less than 10, the first lamp flickers, and other lamps are turned off; SOC is more than or equal to 10 and less than 25, the first lamp is normally on, the second lamp flickers, and other lamps are turned off; SOC is more than or equal to 25 and less than 50, the first lamp and the second lamp are always on, the third lamp flickers, and other lamps are turned off; SOC is more than or equal to 50 and less than 75, the first lamp, the second lamp and the third lamp are always on, the fourth lamp flickers, and other lamps are turned off; SOC is more than or equal to 75 and less than 99, the first lamp, the second lamp, the third lamp and the fourth lamp are always on, and the fifth lamp flickers; SOC is 100, and all lamps are always on; when the battery is in standby or discharged, the SOC is 0, and all lamps are turned off; SOC is more than 0 and less than or equal to 15, the first lamp is normally on, and the other lamps are off; SOC is more than 15 and less than or equal to 35, the first lamp and the second lamp are always on, and the other lamps are off; SOC is more than 35 and less than or equal to 60, the first, second and third lamps are normally on, and other lamps are off; SOC is more than 60 and less than or equal to 85, the first lamp, the second lamp, the third lamp and the fourth lamp are always on, and other lamps are off; SOC is more than 85 and less than or equal to 100, and all lamps are always on; and turning off the power supply.
Example 2
A control strategy of a power extensible modular portable energy storage power supply comprises a direct current charging control strategy, an alternating current charging control strategy, a direct current discharging control strategy and an alternating current discharging control strategy.
The direct current charging control strategy is that the MPPT direct current output end is connected in parallel with the direct current end of the power all-in-one machine and the BMS direct current input end of the energy storage battery module through the master control machine to form a direct current bus, and the photovoltaic module charges the battery through the bus.
The alternating current charging control strategy is characterized in that an alternating current input end of the power all-in-one machine, an inverter circuit of the power all-in-one machine, a direct current output end of the power all-in-one machine and a BMS direct current input end of the energy storage battery module are connected in parallel to form an alternating current-to-direct current bus under the control of a main control machine, and the battery is charged after the commercial power is inserted.
The direct current discharge control strategy is characterized in that when the energy storage battery module is electrified, the direct current output end of the BMS of the energy storage battery module and the direct current end of the power all-in-one machine are controlled by the main controller to be connected in parallel to form a direct current bus, and the energy storage battery module charges a load through the direct current bus; when the energy storage battery module is not powered but the photovoltaic meets the load power, the MPPT direct current output end is controlled by the main controller to be connected with the direct current end of the power all-in-one machine and the BMS direct current input end of the energy storage battery module in parallel to form a direct current bus, and the photovoltaic module charges the load through the bus; when the energy storage battery module is in no power supply but photovoltaic can not meet load power and commercial power is available, the MPPT direct current output end is controlled by the main control machine to be connected with the direct current end of the power all-in-one machine and the BMS direct current input end of the energy storage battery module in parallel to form a direct current bus, the photovoltaic module charges the load through the bus, meanwhile, the main control machine controls the alternating current input end of the power all-in-one machine, the inverter circuit of the power all-in-one machine, the direct current output end of the power all-in-one machine and the load to be connected in parallel to; when the energy storage battery module is in no power and no photovoltaic, but has commercial power, the alternating current input end of the power all-in-one machine, the inverter circuit of the power all-in-one machine, the direct current output end of the power all-in-one machine and the load are connected in parallel to form an alternating current-to-direct current bus under the control of the main control machine, and the commercial power is inserted into the load to charge the load.
The alternating current discharge control strategy is characterized in that when the energy storage battery module is electrified, the BMS direct current output end, the direct current end of the power all-in-one machine, the inverter circuit and the alternating current output end of the power all-in-one machine of the energy storage battery module are connected in parallel to form a direct current-to-alternating current bus through the control of the main control machine, and the energy storage battery module charges a load through the direct current-to-alternating current bus; when the energy storage battery module is in no power and the photovoltaic meets the load power, the MPPT direct current output end is controlled by the main controller to be connected with the direct current end of the power all-in-one machine, the inverter circuit and the alternating current output end of the power all-in-one machine in parallel to form a direct current-to-alternating current bus, and the photovoltaic module charges the load through the direct current-to-alternating current bus; when the energy storage battery module is in no power supply but the photovoltaic can not meet the load power and the commercial power is available, the MPPT direct current output end is controlled by the main controller to be connected with the direct current end of the power all-in-one machine, the inverter circuit and the alternating current output end of the power all-in-one machine in parallel to form a direct current-to-alternating current bus, the photovoltaic module charges the load through the direct current-to-alternating current bus, meanwhile, the bypass module is controlled to be opened by the main controller, and the commercial power is; when the energy storage battery module is not powered and has no photovoltaic and commercial power, the main controller controls the bypass module to be opened under the control of the main controller, and the commercial power is inserted to charge the load.
Furthermore, before the functions are realized, the main control board of the power-extensible modular portable energy storage power supply needs to complete system power-on detection, detect the key states and the states of the single units to realize the start-stop function, the inversion output function and the standby power consumption reduction function of the system, complete the system heating function through the BMS and complete the fault diagnosis function of the system at the same time.
Furthermore, the main control board of the power-extensible modular portable energy storage power supply can feed back the running state of the system, the charge state of the battery, whether the input is effective or not and whether the output is established or not through the indicating lamp while realizing the functions, and prompts a user to charge and report faults.
Further, the power integrated machine of the power extensible modular portable energy storage power supply needs to meet the following requirements to realize the above functions: the control board inside the power all-in-one machine detects the start-stop signal through the start control signal of the main control board, and can realize one-key startup and shutdown; when the bypass module has an alternating current output requirement, the bypass module automatically detects an alternating current input, and when the alternating current input is normal, the bypass module is started; if the alternating current input is abnormal, the bypass module stops working and is output externally by the inverter module.
Further, the working state of the energy storage battery module is controlled by the BMS, and the control strategy is as follows: during the charging mode, BMS is detecting to be connected with the power all-in-one and when charging voltage is greater than internal battery voltage more than 0.5V, opens the MOSFET that charges and charges. And when the charging current reaches the effective charging current, entering a charging mode. Under the charging mode, both the charging MOSFET and the discharging MOSFET are closed; during the floating charge mode, the BMS is detecting to be connected with the power all-in-one machine, and enters the floating charge mode when charging abnormal protection such as charging current, charging temperature can not carry out normal charging or external charging voltage is close to internal battery voltage and can not produce effective charging current. Under the floating charging mode, the charging MOSFET is disconnected, and heating is automatically started when low-temperature alarming and low-temperature protection are carried out; in the discharging mode, the BMS entering the discharging mode when detecting that the load is connected and the discharging current reaches the effective discharging current; when the four modes are not satisfied in the standby mode, entering the standby mode; when in a shutdown mode, the BMS is normally standby for 4 hours or more, the battery triggers under-voltage protection, executes key shutdown or the main control computer executes a shutdown command, and the BMS enters the shutdown mode; wake-up conditions for shutdown mode: 1. activating charging; 2. and (5) communication awakening.
In the description of the present application, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present application.
The foregoing description of specific embodiments of the present invention has been presented. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes or modifications may be made by one skilled in the art within the scope of the appended claims without departing from the spirit of the invention. The embodiments and features of the embodiments of the present application may be combined with each other arbitrarily without conflict.

Claims (10)

1. A power-expandable modular portable energy storage power supply is characterized by comprising a rainproof box body, an energy storage battery module (11), a foldable photovoltaic panel (2) and a control assembly;
the rainproof box body is provided with a radiating fin (5) and an electrical interface;
the energy storage battery module (11) is arranged at the bottom of the inner space of the rainproof box body;
the foldable photovoltaic panel (2) is arranged at the top of the inner space of the rainproof box body;
the control assembly is arranged in the middle of the inner space of the rainproof box body and is electrically connected with the energy storage battery module (11) and the foldable photovoltaic panel (2) respectively.
2. The power scalable modular portable energy storage power supply of claim 1, wherein the rain-proof case comprises: an upper cover (1) and an outer box (2);
the upper cover (1) is connected with the outer box (2) to form the inner space;
the radiating fin (5) and the electrical interface are arranged on the side wall of the outer box (2).
3. The power scalable modular portable energy storage power source according to claim 1, wherein the foldable photovoltaic panel (2) comprises: a plurality of photovoltaic modules, MPPT modules and photovoltaic panel trays (3);
a plurality of photovoltaic module with the MPPT module electricity is connected, and set up in photovoltaic board tray (3), photovoltaic board tray (3) are connected in the rain-proof box, the MPPT module with the control assembly electricity is connected.
4. The power scalable modular portable energy storage power source of claim 1, wherein the control assembly comprises: the main control board (4) and the power all-in-one machine (9);
the main control board (4) is electrically connected with the power all-in-one machine (9).
5. The power scalable modular portable energy storage source according to claim 4, wherein the circuitry inside the power all-in-one machine (9) comprises: an inductor (15) and a transformer (16);
the top of the inductor (15) is provided with an inductor auxiliary radiating fin (8), the periphery of the transformer (16) is provided with a transformer auxiliary radiating fin (7), and a gap in the middle is filled and sealed through heat-conducting glue;
the inductance auxiliary cooling fin (8) and the transformer auxiliary cooling fin (7) are connected with the cooling fin (5).
6. The power scalable modular portable energy storage power supply of claim 4, wherein the power all-in-one machine (9) comprises: a main circuit and a control circuit;
the main circuit comprises a power circuit, an input/output filter circuit, a voltage and current detection circuit and a static switch arranged in the main circuit, wherein the power circuit, the input/output filter circuit and the voltage and current detection circuit are sequentially connected.
7. The power scalable modular portable energy storage power supply of claim 6, wherein the power circuit comprises a rectifier circuit, an inverter circuit, and a battery charging module;
the rectification circuit is mainly used for filtering and purifying input alternating current, removing interference components in a power grid and regulating voltage within a certain range;
the inverter circuit comprises an active inverter connected with a power grid at an alternating current side and a passive inverter connected with a load at the alternating current side;
the battery charging module provides charging current to charge the energy storage battery module (11).
8. The power scalable modular portable energy storage power supply according to claim 1, wherein the energy storage battery module (11) comprises: a BMS (22), a battery pack (24), and a battery tray (23);
the BMS (22) is electrically connected with the battery pack (24);
the BMS (22) and the battery pack (24) are disposed within the battery tray (23).
9. The power scalable modular portable energy storage power supply according to claim 8, wherein the energy storage battery module (11) further comprises: the battery case comprises a battery case side gasket (17), a cooling fin sheet metal frame (18), an external communication board (19) and an internal communication board (20);
the battery case side gasket (17) is used for fixing the battery pack (24);
the radiating fin sheet metal frame (18) is used for fixing the radiating fin (5) and exchanging heat with the battery pack (24);
the external communication board (19) is connected between the BMS (22) and the electrical interface;
the internal communication board (20) is connected between the BMS (22) and the battery pack (24).
10. A method of controlling the power scalable modular portable energy storage power source of claim 1, comprising: a direct current charging control method, an alternating current charging control method, a direct current discharging control method, or an alternating current discharging control method;
the direct current charging control method comprises the following steps: the direct current output end of the MPPT module of the foldable photovoltaic panel (2) is connected with the direct current end of the power all-in-one machine (9) of the control assembly and the direct current input end of the BMS (22) of the energy storage battery module in parallel to form a direct current bus, and the foldable photovoltaic panel (2) charges the energy storage battery module (11) through the bus;
the alternating current charging control method comprises the following steps: connecting an alternating current input end of the power all-in-one machine, an inverter circuit of the power all-in-one machine, a direct current output end of the power all-in-one machine and a BMS direct current input end of the energy storage battery module in parallel to form an alternating current-to-direct current bus, and charging the energy storage battery module (11) after the commercial power is inserted;
the direct current discharge control method comprises the following steps: when the energy storage battery module is electrified, a BMS direct current output end of the energy storage battery module and a direct current end of the power all-in-one machine are connected in parallel to form a direct current bus, and the energy storage battery module charges a load through the direct current bus; when the energy storage battery module is not powered but the photovoltaic meets the load power, the direct current output end of the MPPT module is controlled by the main controller to be connected with the direct current end of the power all-in-one machine and the direct current input end of the BMS of the energy storage battery module in parallel to form a direct current bus, and the photovoltaic module charges the load through the bus; when the energy storage battery module is out of power but the photovoltaic can not meet the load power and the commercial power is available, the direct current output end of the MPPT module is controlled by the main controller to be connected with the direct current end of the power all-in-one machine and the direct current input end of the BMS of the energy storage battery module in parallel to form a direct current bus, the photovoltaic module charges the load through the bus, the alternating current input end of the power all-in-one machine, the inverter circuit of the power all-in-one machine, the direct current output end of the power all-in-one machine and the load are connected in; when the energy storage battery module is not powered or photovoltaic but has commercial power, connecting an alternating current input end of the power all-in-one machine, an inverter circuit of the power all-in-one machine, a direct current output end of the power all-in-one machine and a load in parallel to form an alternating current-to-direct current bus, and charging the load after the commercial power is inserted;
the alternating current discharge control method comprises the following steps: when the energy storage battery module is electrified, a BMS direct-current output end of the energy storage battery module, a direct-current end of the power all-in-one machine, an inverter circuit and an alternating-current output end of the power all-in-one machine are connected in parallel to form a direct-current to alternating-current bus, and the energy storage battery module charges a load through the direct-current to alternating-current bus; when the energy storage battery module is dead and the photovoltaic meets the load power, the direct-current output end of the MPPT module is connected with the direct-current end of the power all-in-one machine, the inverter circuit and the alternating-current output end of the power all-in-one machine in parallel to form a direct-current-to-alternating-current bus, and the photovoltaic module charges the load through the direct-current-to-alternating-current bus; when the energy storage battery module is in no power supply but the photovoltaic can not meet the load power and the commercial power is available, the direct current output end of the MPPT module is connected with the direct current end of the power all-in-one machine, the inverter circuit and the alternating current output end of the power all-in-one machine in parallel to form a direct current-to-alternating current bus, the photovoltaic module charges the load through the direct current-to-alternating current bus, meanwhile, the bypass module is started, and the commercial power is inserted into the load and then; when the energy storage battery module is not powered and has no photovoltaic and commercial power, the bypass module is controlled to be opened through the main control computer, and the commercial power is inserted to charge the load.
CN202011104277.0A 2020-10-15 2020-10-15 Power-expandable modular portable energy storage power supply and control method thereof Pending CN112383127A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113193292A (en) * 2021-04-16 2021-07-30 深圳市恒泰能源科技有限公司 Structure of portable energy storage power station

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113193292A (en) * 2021-04-16 2021-07-30 深圳市恒泰能源科技有限公司 Structure of portable energy storage power station
CN113193292B (en) * 2021-04-16 2022-04-22 深圳市恒泰能源科技有限公司 Structure of portable energy storage power station

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