CN114976364A - Energy storage system - Google Patents

Energy storage system Download PDF

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Publication number
CN114976364A
CN114976364A CN202210791497.8A CN202210791497A CN114976364A CN 114976364 A CN114976364 A CN 114976364A CN 202210791497 A CN202210791497 A CN 202210791497A CN 114976364 A CN114976364 A CN 114976364A
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China
Prior art keywords
liquid
energy storage
cooling
liquid cooling
management module
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CN202210791497.8A
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Chinese (zh)
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CN114976364B (en
Inventor
郝烨
雷以模
范轶
薛裕
陆健
姜子亮
栾伟
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Kingfisher New Energy Technology Nantong Co ltd
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Kingfisher New Energy Technology Nantong Co ltd
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Priority to CN202210791497.8A priority Critical patent/CN114976364B/en
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    • 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
    • H01M10/627—Stationary installations, e.g. power plant buffering or backup power supplies
    • 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
    • H01M10/6556—Solid parts with flow channel passages or pipes for heat exchange
    • 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
    • H01M10/656—Means for temperature control structurally associated with the cells characterised by the type of heat-exchange fluid
    • H01M10/6567—Liquids
    • H01M10/6568—Liquids characterised by flow circuits, e.g. loops, located externally to the cells or cell casings
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/204—Racks, modules or packs for multiple batteries or multiple cells
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/218—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by the material
    • H01M50/22—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by the material of the casings or racks
    • H01M50/229—Composite material consisting of a mixture of organic and inorganic materials
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/218—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by the material
    • H01M50/22—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by the material of the casings or racks
    • H01M50/231—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by the material of the casings or racks having a layered structure
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/233—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions
    • H01M50/24—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions adapted for protecting batteries from their environment, e.g. from corrosion
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/244—Secondary casings; Racks; Suspension devices; Carrying devices; Holders characterised by their mounting method
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/251—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders specially adapted for stationary devices, e.g. power plant buffering or backup power supplies
    • 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
    • H02J15/00—Systems for storing electric energy
    • 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
    • H02J7/0013—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries acting upon several batteries simultaneously or sequentially
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
    • H02J7/00309—Overheat or overtemperature protection
    • 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
    • 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
    • H02J7/0045—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries characterised by the mechanical construction concerning the insertion or the connection of the batteries
    • 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
    • H02J7/0063—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with circuits adapted for supplying loads from the battery
    • 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
    • H02J7/0068—Battery or charger load switching, e.g. concurrent charging and load supply
    • 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)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Power Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Composite Materials (AREA)
  • Inorganic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Secondary Cells (AREA)

Abstract

The utility model relates to an energy storage system, it includes mechanical support component, the battery unit, thermal management module, two-way energy storage converter, BMS battery management module and EMS energy management module, mechanical support component includes the cabinet body, articulated cabinet door that sets up on the cabinet body and paste the thorn PLASTIC LAMINATED that prevents that covers the setting at the cabinet body and cabinet door inner wall, the battery unit includes a plurality of groups energy storage battery, thermal management module is including being used for carrying out refrigerated liquid cooling subassembly to the battery unit, the liquid cooling subassembly includes liquid cooling unit and a plurality of liquid cooling loading boards of installing and being used for bearing energy storage battery in the internal portion of cabinet, the liquid cooling chamber of circulation coolant liquid is seted up to the inside cavity of liquid cooling loading board, the liquid cooling unit is connected with many drain pipes and many liquid return pipes, the one end and a plurality of drain pipe intercommunication are returned to the liquid cooling chamber width direction of liquid cooling loading board, the other end and a plurality of liquid return pipe intercommunication. The application has the effect of improving the safety performance of the energy storage system.

Description

Energy storage system
Technical Field
The application relates to the technical field of energy storage, in particular to an energy storage system.
Background
In the related technology, an energy storage system is an essential basic measure for the development of a micro-grid, an island grid, a distributed power generation system and a new energy automobile rapid charging technology. The energy storage system is applied to the power system, so that the demand side management, the peak clipping and valley filling, the load smoothing and the power grid frequency quick adjustment are realized, the operation stability and reliability of the power grid are improved, and the impact of a new energy power generation system with large instantaneous changes such as photovoltaic and wind power on the power grid is reduced. The energy storage system is often used as a second power supply or a standby power supply in places such as factory buildings and the like, and is used for ensuring stable power supply of the places and improving the rationality of an energy management architecture.
However, in the existing electrochemical energy storage system, a large amount of heat is generated when the battery cell is charged and discharged during use, and the temperature rise caused by the heat generation reduces the performance of the battery cell. Also, when heat generation is severe, the internal pressure of the battery cell rises, causing a problem that the battery cell fires. In addition, the energy storage system is ignited due to external unexpected physical factors, and the shell of the energy storage system is punctured by external impact to puncture the battery unit to generate electric arcs, so that the ignition and explosion accidents are caused. Therefore, how to improve the safety of the energy storage system is a technical problem to be solved.
In view of the above-mentioned related technologies, the inventor thinks that the existing energy storage system is prone to fire accidents caused by heating of the battery unit or external physical damage, and has potential safety hazards.
Disclosure of Invention
In order to improve current energy storage system and generate heat or outside physical destruction takes place the accident of catching a fire because of the battery unit easily, have the problem of potential safety hazard, this application provides an energy storage system.
In a first aspect, the present application provides an energy storage system, which adopts the following technical scheme:
an energy storage system comprises a mechanical support assembly, a battery unit, a thermal management module, a bidirectional energy storage converter, a BMS battery management module and an EMS energy management module, wherein the battery unit, the thermal management module, the bidirectional energy storage converter, the BMS battery management module and the EMS energy management module are mutually connected in a communication manner; the mechanical support assembly comprises a cabinet body, a cabinet door hinged on the cabinet body and a puncture-proof fireproof plate attached to the inner walls of the cabinet body and the cabinet door, and the battery unit, the thermal management module, the bidirectional energy storage converter, the BMS battery management module and the EMS energy management module are all arranged in the cabinet body; the battery unit comprises a plurality of groups of energy storage batteries, the heat management module comprises a liquid cooling assembly for cooling the battery unit, the liquid cooling assembly comprises a liquid cooling unit and a plurality of liquid cooling bearing plates which are arranged in the cabinet body and used for bearing the energy storage batteries, a liquid cooling cavity for circulating cooling liquid is arranged in the liquid cooling bearing plates in a hollow mode, the liquid cooling unit is connected with a plurality of liquid outlet pipes and a plurality of liquid return pipes, one end of the liquid cooling cavity of each liquid cooling bearing plate in the width direction is communicated with the plurality of liquid outlet pipes, and the other end of the liquid cooling cavity of each liquid cooling bearing plate is communicated with the plurality of liquid return pipes; it is a plurality of all slide on the liquid cooling loading board and be equipped with two centre gripping cooling plates that are used for the fixed energy storage battery of centre gripping, the cooling chamber of circulation coolant liquid is seted up to the inside cavity of centre gripping cooling plate, cooling chamber length direction's one end and a plurality of drain pipes intercommunication, the other end and a plurality of liquid return pipe intercommunication.
By adopting the technical scheme, through the arrangement of the heat management module, the liquid cooling unit and the plurality of liquid cooling bearing plates are arranged in a matched manner, each group of energy storage batteries of the battery units can be cooled, so that the operation stability and the safety of the energy storage system can be improved; in addition, the anti-puncturing fireproof plate is attached to the cabinet body and the inner wall of the cabinet door to be covered, the overall anti-puncturing fireproof performance of the energy storage system can be effectively improved, when accidental impact is generated outside and the cabinet body is punctured, the anti-puncturing fireproof plate can reinforce the cabinet body, the battery unit inside the cabinet body is protected, even if the cabinet body is punctured by external impact, the fire prevention anti-puncturing fireproof plate can block and buffer foreign matters punctured into the cabinet body, the damage to the energy storage device in the cabinet body caused by the foreign matters which are effectively prevented from being punctured is effectively avoided, and the fire prevention anti-puncturing fireproof plate can effectively isolate electric sparks generated by the external impact cabinet body from entering the cabinet body, so that the effect of effectively improving the safety performance of the energy storage system is achieved.
Preferably, the liquid cooling intracavity is provided with two support flow distribution plates that are the splayed setting along liquid cooling liquid flowing direction, the liquid cooling chamber forms the first liquid cooling cavity, second liquid cooling cavity and the third liquid cooling cavity that the cross-section is trapezoidal under two support flow distribution plate partitions in proper order, wherein first liquid cooling cavity and third liquid cooling cavity are greater than the width that is close to liquid return pipe one end near the one end width of drain pipe, the one end width that the second liquid cooling cavity is close to the drain pipe is less than the width that is close to liquid return pipe one end.
By adopting the technical scheme, the liquid cooling cavity can be supported and reinforced by the arrangement of the two support flow distribution plates arranged in the shape of the Chinese character 'ba', so that the stability of the whole structure of the liquid cooling support plate is improved; the liquid cooling cavities are separated by the two supporting splitter plates, and after the cooling liquid enters the liquid cooling cavities, the widths of the first liquid cooling cavity and the third liquid cooling cavity are sequentially reduced along the flowing direction of the cooling liquid, so that when the inflow rate of the cooling liquid is constant, the flow rates of the cooling liquid in the first liquid cooling cavity and the third liquid cooling cavity are improved due to the fact that the cross section areas are continuously reduced, namely the residence time of the cooling liquid entering the first liquid cooling cavity and the first liquid cooling cavity in the first half section of the cooling liquid is longer than that of the cooling liquid entering the third liquid cooling cavity in the second half section of the cooling liquid; the coolant liquid velocity of flow that gets into the second liquid cooling cavity reduces because of its cross sectional area constantly increases like this, it is less than the dwell time of half section in the first half section of coolant liquid that gets into the second liquid cooling cavity promptly, and then make the coolant liquid that gets into in first liquid cooling cavity and the third liquid cooling cavity mainly cool off the energy storage battery in half section before, the coolant liquid that gets into the second liquid cooling cavity can keep lower temperature mainly to cool off the energy storage battery in half section after, make the energy storage battery can obtain even cooling, avoid appearing the coolant liquid at the liquid cooling intracavity at the uniform velocity flow and lead to the coolant liquid to rise the not good phenomenon of half section cooling effect in half section heat transfer temperature before to, reach the effect that effectively improves energy storage system thermal management performance.
Preferably, the cooling cavity is internally provided with two arc-shaped splitter plates which are oppositely arranged and in bracket shape along the flowing direction of the cooling liquid, and the cooling cavity is divided by the two arc-shaped splitter plates to form a first cooling cavity, a second cooling cavity and a third cooling cavity in sequence.
By adopting the technical scheme, through the arrangement of the arc-shaped splitter plate, the structural firmness of the clamping cooling plate is effectively improved, the cooling cavity is simultaneously divided, and when the cooling liquid is conveyed into the first cooling cavity, the second cooling cavity and the third cooling cavity at a constant speed, the flow speed of the cooling liquid in the first cooling cavity and the third cooling cavity is increased and then decreased due to the fact that the cross sections of the cooling liquid are firstly reduced and then increased, namely the residence time of the cooling liquid at two ends in the first cooling cavity and the third cooling cavity is longer; similarly, the flow speed of the cooling liquid in the second cavity is reduced and then increased due to the fact that the cross section of the cooling liquid is enlarged and then reduced, namely the residence time of the cooling liquid in the middle of the second cooling cavity is longer; and then make first cooling cavity and third cooling cavity internal cooling liquid mainly stop near the drain pipe and return the both ends of liquid pipe and cool off the energy storage battery, the cooling liquid in the second cooling cavity mainly cools off the energy storage battery at the cooling chamber middle part, realizes the even cooling to energy storage battery, reaches the effect that effectively improves energy storage system thermal management performance.
Preferably, the puncture-proof and fireproof plate comprises a plurality of layers of first high-strength flame-retardant fiber layers, first high-temperature-resistant elastic rubber layers, a metal mesh layer, second high-temperature-resistant elastic rubber layers and a plurality of layers of second high-strength flame-retardant fiber layers which are sequentially arranged, and the first high-strength flame-retardant fiber layers and the second high-strength flame-retardant fiber layers are woven by aramid fibers.
By adopting the technical scheme, the aramid fiber has the excellent performances of ultrahigh strength, high modulus, high temperature resistance, acid and alkali resistance, light weight and the like, the strength of the aramid fiber is 5-6 times that of a steel wire, and the aramid fiber has good insulativity and ageing resistance; by arranging the first high-strength flame-retardant fiber layer, electric sparks generated when the outside impacts the cabinet body can be effectively prevented from entering the cabinet body, and the safety and reliability are improved; the anti-puncturing fireproof plate is formed by compounding three materials, namely fiber, rubber and metal, when the anti-puncturing fireproof plate is impacted by facing the outside, a punctured foreign matter is firstly blocked by the first high-strength flame-retardant fiber layer, at the moment, the puncturing kinetic energy is absorbed by the first high-temperature-resistant elastic rubber layer, the puncturing trend of the foreign matter is effectively restrained, when the kinetic energy of the punctured foreign matter is larger, the first high-strength flame-retardant fiber layer is broken due to the action of shearing force, the impact force of the foreign matter generates tension waves in the anti-puncturing fireproof plate, the tension waves are transmitted along the axial direction of the fiber in continuous pulses, and the impacted fiber and other fibers are interacted through the rubber and the staggered points, so that the energy is absorbed in a relatively large area, the puncturing trend of the foreign matter is effectively restrained, and the anti-puncturing performance is higher; in addition, due to the arrangement of the metal mesh layer, the performance of the anti-puncturing fireproof plate substrate can be effectively improved, foreign matters are blocked and limited when being punctured, the anti-puncturing performance of the anti-puncturing fireproof plate is further improved, and the effect of effectively reducing the probability that the energy storage system is punctured and ignited by external impact is achieved.
Preferably, the first high-temperature-resistant elastic rubber layer and the second high-temperature-resistant elastic rubber layer are both made of silicon rubber, and a plurality of hemispherical elastic particles are distributed on one side, away from the metal layer, of the first high-temperature-resistant elastic rubber layer.
Through adopting above-mentioned technical scheme, the high temperature resistant performance of silicon rubber is good, can work for a long time under the high temperature environment, effectively absorbs the foreign matter impact force and alleviates, and can further promote first high temperature resistant elasticity rubber layer buffering resilience performance through setting up a plurality of hemisphere elastic particle, helps improving the puncture-proof performance of preventing stinging the PLASTIC LAMINATED.
Preferably, the thermal management module comprises an electric heating assembly, an input end of the electric heating assembly is connected with the metal mesh layer, and the electric heating assembly transmits current to the metal mesh layer according to instructions to heat the metal mesh layer so as to heat the inside of the cabinet body.
Through adopting above-mentioned technical scheme, through electric heating element's setting, thermal management module can be when external environment is handed over the end, and the circular telegram of metal mesh layer heats the heating of rising the temperature to cabinet internal portion, ensures that energy storage system keeps high-efficient operation, reaches the effect that effectively improves energy storage system operating efficiency.
Preferably, it is a plurality of supplementary spout has all been seted up along its length direction in liquid cooling loading board top and bottom, centre gripping cooling plate top and bottom all are provided with supplementary slider, supplementary slider slides and sets up in supplementary spout, be provided with the direction slide bar along its length direction in the supplementary spout, the direction slide bar runs through supplementary slider.
Through adopting above-mentioned technical scheme, through the setting of supplementary spout and supplementary slider, help improving the stability of sliding of centre gripping cooling plate on the cooling loading board for centre gripping cooling plate and cooling loading board can be stably cooperated and fix and cool off energy storage battery, make energy storage system's battery unit can the safety and stability carry out charge and discharge work, reach the effect that effectively improves energy storage system fire prevention security performance.
Preferably, a fixed waist-shaped hole is formed in the side outer side groove wall of the auxiliary sliding groove along the length direction of the auxiliary sliding groove, a fixing bolt penetrates through the fixed waist-shaped hole, the fixing bolt is in threaded connection with the auxiliary sliding block, and the end of the fixing bolt is abutted to the guide sliding rod.
Through adopting above-mentioned technical scheme, through the setting of fixed waist type hole and fixing bolt, can fix the centre gripping fixed plate for two centre gripping cooling plates stabilize fixed and cooling to energy storage battery, reach the effect that effectively improves energy storage system cooling fire behavior.
Preferably, the EMS energy management module and the BMS battery management module are commonly connected with a human-computer interaction device, and the human-computer interaction device includes a touch display and a control button.
By adopting the technical scheme, through the arrangement of the human-computer interaction equipment, management personnel can manage and check the energy storage system conveniently, and the management efficiency of the energy storage system is improved.
Preferably, the EMS energy management module is in communication connection with a network cloud platform.
By adopting the technical scheme, through the arrangement of the network cloud platform, the management personnel can conveniently realize remote management of the energy storage system, the data of the energy storage system can be uploaded and stored, and the management efficiency and the use convenience of the energy storage system are further improved.
In summary, the present application includes at least one of the following beneficial technical effects:
1. through the arrangement of the heat management module, the liquid cooling unit and the plurality of liquid cooling bearing plates are arranged in a matched mode, each group of energy storage batteries of the battery units can be cooled, the operation stability and safety of the energy storage system are improved, the energy storage batteries which are arranged on the liquid cooling bearing plates in a sliding mode can adapt to energy storage battery packs of different specifications, the energy storage batteries are further cooled while the energy storage batteries are fixed in an auxiliary mode, the phenomenon that the battery units are ignited due to the fact that a large amount of heat is dissipated when the battery units are charged and discharged is avoided, and the operation stability and safety of the energy storage system are further improved;
2. in addition, the anti-puncturing fireproof plates are attached to the inner walls of the cabinet body and the cabinet door, so that the overall anti-puncturing fireproof performance of the energy storage system can be effectively improved, when the cabinet body is punctured by accidental impact outside, the anti-puncturing fireproof plates can reinforce the cabinet body and protect the battery unit inside the cabinet body, even if the cabinet body is punctured by external impact, the anti-puncturing fireproof plates can block and buffer foreign matters punctured into the cabinet body, the damage of the foreign matters punctured into the energy storage device in the cabinet body is effectively avoided, and the anti-puncturing fireproof plates can effectively isolate electric sparks generated by the external impact on the cabinet body from entering the cabinet body, so that the effect of effectively improving the safety performance of the energy storage system is achieved;
3. through the arrangement of the two support flow distribution plates arranged in the shape of the Chinese character 'ba', the liquid cooling cavity can be supported and reinforced, and the stability of the whole structure of the liquid cooling support plate is improved; the liquid cooling cavities are separated by the two supporting splitter plates, and after the cooling liquid enters the liquid cooling cavities, the widths of the first liquid cooling cavity and the third liquid cooling cavity are sequentially reduced along the flowing direction of the cooling liquid, so that when the inflow rate of the cooling liquid is constant, the flow rates of the cooling liquid in the first liquid cooling cavity and the third liquid cooling cavity are improved due to the fact that the cross section areas are continuously reduced, namely the residence time of the cooling liquid entering the first liquid cooling cavity and the first liquid cooling cavity in the first half section of the cooling liquid is longer than that of the cooling liquid entering the third liquid cooling cavity in the second half section of the cooling liquid; similarly, the flow velocity of the cooling liquid entering the second liquid cooling cavity is reduced due to the fact that the cross section area of the cooling liquid is continuously increased, namely the residence time of the first half section of the cooling liquid entering the second liquid cooling cavity is smaller than that of the second half section of the cooling liquid, so that the cooling liquid entering the first liquid cooling cavity and the third liquid cooling cavity is mainly used for cooling the energy storage battery in the first half section, the cooling liquid entering the second liquid cooling cavity can keep low temperature and is mainly used for cooling the energy storage battery in the second half section, the energy storage battery can be uniformly cooled, the phenomenon that the cooling liquid is poor in the second half section due to the fact that the heat exchange temperature of the cooling liquid in the first half section is increased due to the fact that the cooling liquid flows at a constant speed in the liquid cooling cavity is avoided, and the effect of effectively improving the heat management performance of the energy storage system is achieved;
4. by arranging the first high-strength flame-retardant fiber layer, electric sparks generated when the outside impacts the cabinet body can be effectively prevented from entering the cabinet body, and the safety and reliability are improved; the anti-puncturing fireproof plate is formed by compounding three materials, namely fiber, rubber and metal, when the anti-puncturing fireproof plate is impacted by facing the outside, a punctured foreign matter is firstly blocked by the first high-strength flame-retardant fiber layer, at the moment, the puncturing kinetic energy is absorbed by the first high-temperature-resistant elastic rubber layer, the puncturing trend of the foreign matter is effectively restrained, when the kinetic energy of the punctured foreign matter is larger, the first high-strength flame-retardant fiber layer is broken due to the action of shearing force, the impact force of the foreign matter generates tension waves in the anti-puncturing fireproof plate, the tension waves are transmitted along the axial direction of the fiber in continuous pulses, and the impacted fiber and other fibers are interacted through the rubber and the staggered points, so that the energy is absorbed in a relatively large area, the puncturing trend of the foreign matter is effectively restrained, and the anti-puncturing performance is higher; in addition, due to the arrangement of the metal mesh layer, the performance of the anti-puncturing fireproof plate substrate can be effectively improved, foreign matters are blocked and limited when being punctured, the anti-puncturing performance of the anti-puncturing fireproof plate is further improved, and the effect of effectively reducing the probability that the energy storage system is punctured and ignited by external impact is achieved.
Drawings
FIG. 1 is a system block diagram of an energy storage system in an embodiment of the present application;
FIG. 2 is a schematic diagram of the overall structure of an energy storage system in an embodiment of the present application;
FIG. 3 is a schematic structural diagram of a battery cell and a thermal management unit in an embodiment of the present application;
FIG. 4 is a schematic cross-sectional view of a liquid cooled carrier plate according to an embodiment of the present application;
FIG. 5 is a schematic cross-sectional view of a clamping cooling plate in an embodiment of the present application;
FIG. 6 is a schematic structural view of the clamping cooling plate and the liquid-cooled carrier plate according to the embodiment of the present application;
FIG. 7 is a schematic view showing the layer structure of the puncture-proof and fire-proof plate in the embodiment of the present application;
fig. 8 is a schematic structural view of hemispherical elastic particles of the first high temperature-resistant elastic rubber layer in the embodiment of the present application.
Description of reference numerals: 1. a mechanical support assembly; 11. a cabinet body; 12. a cabinet door; 13. a stab-resistant fire-proof plate; 131. a first high-strength flame-retardant fiber layer; 132. a first high temperature resistant elastic rubber layer; 133. a metal mesh layer; 134. a second high temperature resistant elastic rubber layer; 135. a second high-strength flame-retardant fiber layer; 136. hemispherical elastic particles; 2. a battery cell; 21. an energy storage battery; 3. a thermal management module; 31. a liquid cooling assembly; 311. a liquid cooling unit; 312. liquid cooling bearing plates; 313. a liquid outlet pipe; 314. a liquid return pipe; 315. clamping the cooling plate; 316. an auxiliary chute; 317. an auxiliary slide block; 318. a guide slide bar; 319. fixing the waist-shaped hole; 320. fixing the bolt; 32. an electrical heating assembly; 4. a bidirectional energy storage converter; 5. a BMS battery management module; 6. an EMS energy management module; 7. a liquid-cooled chamber; 71. supporting the splitter plate; 72. a first liquid-cooled cavity; 73. a second liquid-cooled cavity; 74. a third liquid-cooled cavity; 8. a cooling chamber; 81. an arc-shaped splitter plate; 82. a first cooling cavity; 83. a second cooling cavity; 84. a third cooling cavity; 9. a human-computer interaction device; 91. a touch display; 92. a control button; 10. and (4) a network cloud platform.
Detailed Description
The present application is described in further detail below with reference to figures 1-8.
The embodiment of the application discloses an energy storage system. Referring to fig. 1-8, an energy storage system includes a mechanical support assembly 1, a battery cell 2, a thermal management module 3, a bidirectional energy storage converter 4, a BMS battery management module 5, and an EMS energy management module 6. The battery unit 2, the thermal management module 3, the bidirectional energy storage converter 4, the BMS battery management module 5 and the EMS energy management module 6 are communicatively connected to each other. The mechanical support assembly 1 comprises a cabinet body 11, a cabinet door 12 hinged on the cabinet body 11, and a stab-resistant and fire-resistant plate 13 attached to the inner walls of the cabinet body 11 and the cabinet door 12. The battery unit 2, the thermal management module 3, the bidirectional energy storage converter 4, the BMS battery management module 5 and the EMS energy management module 6 are all installed inside the cabinet body 11. The battery unit 2 comprises several groups of energy storage batteries 21. The thermal management module 3 includes a liquid cooling assembly 31 for cooling the battery unit 2, and the liquid cooling assembly 31 includes a liquid cooling unit 311 and a plurality of liquid cooling bearing plates 312 installed inside the cabinet 11 for bearing the energy storage battery 21. The liquid cooling bearing plate 312 has a hollow liquid cooling chamber 7 for circulating a cooling liquid, and the liquid cooling unit 311 is connected to a plurality of liquid outlet pipes 313 and a plurality of liquid return pipes 314. One end of the liquid cooling chamber 7 of the liquid cooling loading plate 312 in the width direction is communicated with the plurality of liquid outlet pipes 313, and the other end is communicated with the plurality of liquid return pipes 314. All slide on a plurality of liquid cooling loading boards 312 and be equipped with two centre gripping cooling plates 315 that are used for the fixed energy storage battery 21 of centre gripping, the inside cavity of centre gripping cooling plates 315 is seted up the cooling chamber 8 of circulation coolant liquid. One end of the cooling cavity 8 in the length direction is communicated with a plurality of liquid outlet pipes 313, and the other end is communicated with a plurality of liquid return pipes 314. Through the setting of thermal management module 3, liquid cooling unit 311 and a plurality of liquid cooling loading board 312 cooperation set up, can cool off every energy storage battery 21 of battery unit 2, help improving energy storage system operating stability and security. Through the setting of centre gripping cooling plate 315, the slip setting can adapt to the energy storage group battery of different specifications on the liquid cooling bears, further cools off energy storage battery 21 when supplementary fixed energy storage battery 21, gives off the phenomenon that a large amount of heats lead to battery unit 2 to catch fire when avoiding appearing battery unit 2 and carrying out charging and discharging, has further improved the stability and the security of energy storage system operation. In addition, the anti-puncturing fireproof plate 13 arranged on the inner walls of the cabinet body 11 and the cabinet door 12 is attached, so that the overall anti-puncturing fireproof performance of the energy storage system can be effectively improved, when accidental impact happens to the cabinet body 11, the anti-puncturing fireproof plate 13 can reinforce the cabinet body 11, and the battery unit 2 inside the cabinet body 11 is protected. Even if the cabinet body 11 is punctured by external impact, the fireproof and puncture-proof plate 13 can block and buffer the foreign matters punctured into the cabinet body 11, and the damage to the energy storage devices in the cabinet body 11 caused by the punctured foreign matters is effectively avoided. Moreover, the fireproof and stab-resistant plate 13 can effectively prevent electric sparks generated by external impact on the cabinet body 11 from entering the cabinet body 11, so that the effect of effectively improving the safety performance of the energy storage system is achieved.
Referring to fig. 3 and 4, two support flow distribution plates 71 are disposed in the liquid cooling chamber 7 in a splayed manner along the flowing direction of the liquid cooling liquid. The liquid cooling chamber 7 is divided by two supporting and dividing plates 71 to sequentially form a first liquid cooling cavity 72, a second liquid cooling cavity 73 and a third liquid cooling cavity 74 with trapezoidal cross sections. Wherein the first liquid-cooled cavity 72 and the third liquid-cooled cavity 74 have a greater width at the end proximate to the exit pipe 313 than at the end proximate to the liquid return pipe 314. Second liquid-cooled cavity 73 has a smaller width at an end proximate effluent channel 313 than at an end proximate return channel 314. Through the arrangement of the two support flow distribution plates 71 which are arranged in the shape of the Chinese character 'ba', the liquid cooling cavity 7 can be supported and reinforced, and the stability of the whole structure of the liquid cooling support plate is improved. And the liquid cooling chamber 7 is divided by the two supporting splitter plates 71, after the cooling liquid enters, because the widths of the first liquid cooling cavity 72 and the third liquid cooling cavity 74 are sequentially reduced along the flowing direction of the cooling liquid, when the rate of the cooling liquid flowing into each cavity is constant, the flow rates of the cooling liquid in the first liquid cooling cavity 72 and the third liquid cooling cavity 74 are improved due to the fact that the cross-sectional areas are continuously reduced, namely, the residence time of the cooling liquid entering the first liquid cooling cavity 72 and the third liquid cooling cavity 74 in the first half section is longer than that of the cooling liquid entering the third liquid cooling cavity 74 in the second half section. Similarly, the flow velocity of the cooling liquid entering the second liquid cooling cavity 73 is reduced due to the increasing cross-sectional area, that is, the residence time of the first half of the cooling liquid entering the second liquid cooling cavity 73 is shorter than that of the second half. And then make the coolant liquid that gets into in first liquid cooling cavity 72 and the third liquid cooling cavity 74 mainly cool off energy storage battery 21 in half section before, the coolant liquid that gets into second liquid cooling cavity 73 can keep lower temperature mainly cools off the temperature in half section after to energy storage battery 21 for energy storage battery 21 can obtain even cooling. The phenomenon that the cooling liquid rises at the heat exchange temperature of the front half section and is not good in the cooling effect of the rear half section due to the fact that the cooling liquid flows at the constant speed in the liquid cooling cavity 7 is avoided, and the effect of effectively improving the heat management performance of the energy storage system is achieved.
Referring to fig. 3 and 5, two arc-shaped flow dividing plates 81 are oppositely arranged in a bracket shape along the flowing direction of the cooling liquid in the cooling cavity 8. The cooling chamber 8 is divided by two arc-shaped dividing plates 81 to form a first cooling cavity 82, a second cooling cavity 83 and a third cooling cavity 84 in sequence. Through the setting of arc flow distribution plate 81, the structural firmness of clamping cooling plate 315 is effectively improved, and cooling cavity 8 is segmented simultaneously. When the cooling liquid is supplied to the first cooling cavity 82, the second cooling cavity 83 and the third cooling cavity 84 at a constant rate, the flow rate of the cooling liquid in the first cooling cavity 82 and the third cooling cavity 84 is increased and then decreased due to the fact that the cross section of the cooling liquid is first reduced and then increased, namely, the residence time of the cooling liquid in the first cooling cavity 82 and the second cooling cavity 84 is longer. Similarly, the flow velocity of the cooling liquid in the second cavity is reduced and then increased due to the fact that the cross section of the cooling liquid is first enlarged and then reduced, namely, the residence time of the cooling liquid in the middle of the second cooling cavity 83 is longer. And then the cooling liquid in the first cooling cavity 82 and the third cooling cavity 84 mainly stays at two ends close to the liquid outlet pipe 313 and the liquid return pipe 314 to cool the energy storage battery 21, and the cooling liquid in the second cooling cavity 83 mainly cools the energy storage battery 21 in the middle of the cooling cavity 8, so that the energy storage battery 21 is uniformly cooled, and the effect of effectively improving the thermal management performance of the energy storage system is achieved.
Referring to fig. 6, the top and the bottom of the liquid cooling bearing plates 312 are both provided with an auxiliary sliding groove 316 along the length direction thereof, the top and the bottom of the clamping cooling plate 315 are both provided with an auxiliary sliding block 317, and the auxiliary sliding block 317 is slidably disposed in the auxiliary sliding groove 316. A guide sliding rod 318 is provided in the auxiliary sliding groove 316 along the length direction thereof, and the guide sliding rod 318 penetrates through the auxiliary sliding block 317. Through the setting of supplementary spout 316 and supplementary slider 317, help improving the stability of sliding of centre gripping cooling plate 315 on the cooling carrier board for centre gripping cooling plate 315 and cooling carrier board can be stably cooperated and fix and cool off energy storage battery 21. The battery unit 2 of the energy storage system can be charged and discharged safely and stably, and the effect of effectively improving the fireproof safety performance of the energy storage system is achieved.
Referring to fig. 6, a fixing waist-shaped hole 319 is formed in the lateral outer wall of the auxiliary chute 316 along the length direction thereof, and a fixing bolt 320 is inserted into the fixing waist-shaped hole 319. The fixing bolt 320 is screwed to the auxiliary slider 317 and has an end abutting against the guide slide 318. Through the setting of fixed waist type hole 319 and fixing bolt 320, can fix centre gripping cooling plate 315 for two centre gripping cooling plates 315 stabilize fixed and cooling energy storage battery 21, reach the effect that effectively improves energy storage system cooling fire behavior.
Referring to fig. 7, the puncture and fire-proof plate 13 includes a plurality of first high-strength flame-retardant fiber layers 131, a first high-temperature-resistant elastic rubber layer 132, a metal mesh layer 133, a second high-temperature-resistant elastic rubber layer 134, and a plurality of second high-strength flame-retardant fiber layers 135, which are sequentially disposed. The first high-strength flame-retardant fiber layer 131 and the second high-strength flame-retardant fiber layer 135 are woven from aramid fibers. The aramid fiber has the excellent performances of ultrahigh strength, high modulus, high temperature resistance, acid and alkali resistance, light weight and the like, the strength of the aramid fiber is 5-6 times that of a steel wire, and the aramid fiber has good insulating property and ageing resistance. The first high temperature resistant elastic rubber layer 132 and the second high temperature resistant elastic rubber layer 134 are made of silicon rubber. The silicone rubber has good high-temperature resistance, can work for a long time in a high-temperature environment, and effectively absorbs and relieves the impact force of foreign matters. Through the setting of first high strength flame retardant fiber layer 131, can prevent effectively that the external world from striking cabinet body 11 and producing inside electric spark gets into cabinet body 11, improve fail safe nature. The anti-puncturing fireproof plate 13 is formed by compounding three materials of fiber, rubber and metal, when the anti-puncturing fireproof plate faces to the outside through type impact, a punctured foreign matter is firstly blocked by the first high-strength flame-retardant fiber layer 131, and at the moment, the puncturing kinetic energy is absorbed by the first high-temperature-resistant elastic rubber layer 132, so that the puncturing tendency of the foreign matter is effectively suppressed. When the kinetic energy for penetrating the foreign matter is large, the first high-strength flame-retardant fiber layer 131 is broken due to the shearing force, the impact force of the foreign matter generates tension waves in the puncture-proof and fireproof plate 13, the tension waves are transmitted along the axial direction of the fibers in continuous pulses, and the impacted fibers and other fibers are interacted through rubber and staggered points, so that the energy is absorbed in a relatively large area, the penetration tendency of the foreign matter is effectively restrained, and the puncture-proof performance is high. In addition, due to the arrangement of the metal mesh layer 133, the performance of the base body of the anti-puncturing fireproof plate 13 can be effectively improved, foreign matters are blocked and limited when being punctured, the anti-puncturing performance of the anti-puncturing fireproof plate 13 is further improved, and the effect of effectively reducing the probability that the energy storage system is punctured and ignited by external impact is achieved.
Referring to fig. 7 and 8, a plurality of hemispherical elastic particles 136 are distributed on a side of the first high temperature resistant elastic rubber layer 132 away from the metal layer. Can further promote first high temperature resistant elasticity rubber layer 132 buffering resilience performance through setting up a plurality of hemisphere elastic particle 136, help improving the puncture-proof performance of puncture-proof fire shield 13.
Referring to fig. 1 and 7, the thermal management module 3 includes an electric heating assembly 32, and an input end of the electric heating assembly 32 is connected to a metal mesh layer 133. The electric heating unit 32 supplies electric current to the metal mesh layer 133 according to the instruction to heat the metal mesh layer 133 and further heat the inside of the cabinet 11. Through the setting of electrical heating assembly 32, thermal management module 3 can be when external environment is handed over to the end, and the metal mesh layer 133 circular telegram heats up the cabinet body 11 is inside, ensures that energy storage system keeps high-efficient operation, reaches the effect that effectively improves energy storage system operating efficiency. In addition, when the external environment where the energy storage system is located is low for a long time, a layer of PI heating film can be arranged inside the cabinet body 11 and connected with the electric heating assembly 32, and the internal environment of the cabinet body 11 is heated and warmed up while the external environment is ensured to keep efficient operation of the energy storage system.
Referring to fig. 1 and 2, the EMS power management module 6 and the BMS battery management module 5 are commonly connected with a human-computer interaction device 9, and the human-computer interaction device 9 includes a touch display 91 and control buttons 92. Through the arrangement of the human-computer interaction equipment 9, managers can manage and check the energy storage system conveniently, and the management efficiency of the energy storage system is improved. The EMS energy management module 6 is in communication connection with a network cloud platform 10. Through the arrangement of the network cloud platform 10, managers can conveniently and remotely manage the energy storage system, data of the energy storage system can be uploaded and stored, and the management efficiency and the use convenience of the energy storage system are further improved.
The above examples are only used to illustrate the technical solutions of the present invention, and do not limit the scope of the present invention. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from these embodiments without making any inventive step, fall within the scope of the present invention. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art may still make various combinations, additions, deletions or other modifications of the features of the embodiments of the present invention according to the situation without conflict, so as to obtain different technical solutions without substantially departing from the spirit of the present invention, and these technical solutions also fall within the protection scope of the present invention.

Claims (10)

1. An energy storage system, characterized by: the battery pack management system comprises a mechanical support assembly (1), a battery unit (2), a thermal management module (3), a bidirectional energy storage converter (4), a BMS battery management module (5) and an EMS energy management module (6), wherein the battery unit (2), the thermal management module (3), the bidirectional energy storage converter (4), the BMS battery management module (5) and the EMS energy management module (6) are in mutual communication connection; the mechanical support assembly (1) comprises a cabinet body (11), a cabinet door (12) hinged to the cabinet body (11) and a puncture-proof and fireproof plate (13) attached to the inner walls of the cabinet body (11) and the cabinet door (12), wherein the battery unit (2), the thermal management module (3), the bidirectional energy storage converter (4), the BMS battery management module (5) and the EMS energy management module (6) are all installed inside the cabinet body (11); the battery unit (2) comprises a plurality of groups of energy storage batteries (21), the thermal management module (3) comprises a liquid cooling assembly (31) for cooling the battery unit (2), the liquid cooling assembly (31) comprises a liquid cooling unit (311) and a plurality of liquid cooling bearing plates (312) which are arranged inside the cabinet body (11) and used for bearing the energy storage batteries (21), a liquid cooling cavity (7) for circulating cooling liquid is formed in the liquid cooling bearing plates (312) in a hollow mode, the liquid cooling unit (311) is connected with a plurality of liquid outlet pipes (313) and a plurality of liquid return pipes (314), one end of the liquid cooling cavity (7) of the liquid cooling bearing plates (312) in the width direction is communicated with the plurality of liquid outlet pipes (313), and the other end of the liquid cooling cavity is communicated with the plurality of liquid return pipes (314); it is a plurality of all slide on liquid cooling loading board (312) and be equipped with two centre gripping cooling plates (315) that are used for the fixed energy storage battery of centre gripping (21), cooling chamber (8) of circulation coolant liquid are seted up to centre gripping cooling plate (315) inside cavity, cooling chamber (8) length direction's one end and a plurality of drain pipes (313) intercommunication, the other end and a plurality of roots return liquid pipe (314) intercommunication.
2. The energy storage system of claim 1, wherein: be provided with two support flow distribution plates (71) that are the splayed setting along liquid cooling liquid flowing direction in liquid cold chamber (7), liquid cold chamber (7) form in proper order under two support flow distribution plates (71) separate that the cross-section is trapezoidal first liquid cooling cavity (72), second liquid cooling cavity (73) and third liquid cooling cavity (74), wherein first liquid cooling cavity (72) and third liquid cooling cavity (74) are close to the width that the one end width of drain pipe (313) is greater than the width that is close to liquid return pipe (314) one end, the one end width that second liquid cooling cavity (73) are close to drain pipe (313) is less than the width that is close to liquid return pipe (314) one end.
3. The energy storage system of claim 2, wherein: two arc flow distribution plates (81) which are in bracket shape and are oppositely arranged are arranged in the cooling cavity (8) along the flowing direction of cooling liquid, and the cooling cavity (8) is divided by the two arc flow distribution plates (81) to form a first cooling cavity (82), a second cooling cavity (83) and a third cooling cavity (84) in sequence.
4. The energy storage system of claim 1, wherein: the stab-resistant fire-proof plate (13) comprises a plurality of layers of first high-strength flame-retardant fiber layers (131), first high-temperature-resistant elastic rubber layers (132), a metal mesh layer (133), second high-temperature-resistant elastic rubber layers (134) and a plurality of layers of second high-strength flame-retardant fiber layers (135), wherein the first high-strength flame-retardant fiber layers (131) and the second high-strength flame-retardant fiber layers (135) are all formed by weaving aramid fibers.
5. The energy storage system of claim 4, wherein: the first high-temperature-resistant elastic rubber layer (132) and the second high-temperature-resistant elastic rubber layer (134) are both made of silicon rubber, and a plurality of hemispherical elastic particles (136) are distributed on one side, away from the metal layer, of the first high-temperature-resistant elastic rubber layer (132).
6. The energy storage system of claim 4, wherein: the thermal management module (3) comprises an electric heating assembly (32), the input end of the electric heating assembly (32) is connected with the metal mesh layer (133), and the electric heating assembly (32) transmits current to the metal mesh layer (133) according to instructions to heat the metal mesh layer (133) so as to heat the interior of the cabinet body (11).
7. The energy storage system of claim 1, wherein: a plurality of supplementary spout (316) have all been seted up along its length direction to liquid cooling loading board (312) top and bottom, centre gripping cooling plate (315) top and bottom all are provided with supplementary slider (317), supplementary slider (317) slide and set up in supplementary spout (316), be provided with direction slide bar (318) along its length direction in supplementary spout (316), direction slide bar (318) run through supplementary slider (317).
8. The energy storage system of claim 7, wherein: fixed waist-shaped holes (319) are formed in the side outer side groove wall of the auxiliary sliding groove (316) along the length direction of the auxiliary sliding groove, fixing bolts (320) penetrate through the fixed waist-shaped holes (319), the fixing bolts (320) are in threaded connection with the auxiliary sliding block (317), and the end portions of the fixing bolts are abutted to the guide sliding rod (318).
9. The energy storage system of claim 1, wherein: the EMS energy management module (6) and the BMS battery management module (5) are connected with a human-computer interaction device (9) together, and the human-computer interaction device (9) comprises a touch display (91) and a control button (92).
10. The energy storage system of claim 1, wherein: the EMS energy management module (6) is in communication connection with a network cloud platform (10).
CN202210791497.8A 2022-07-05 2022-07-05 energy storage system Active CN114976364B (en)

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CN117318251A (en) * 2023-11-29 2023-12-29 又一新能源科技(苏州)有限公司 Energy storage system

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