CN114976364B - energy storage system - Google Patents

energy storage system Download PDF

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Publication number
CN114976364B
CN114976364B CN202210791497.8A CN202210791497A CN114976364B CN 114976364 B CN114976364 B CN 114976364B CN 202210791497 A CN202210791497 A CN 202210791497A CN 114976364 B CN114976364 B CN 114976364B
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China
Prior art keywords
liquid
energy storage
liquid cooling
cooling
cooling cavity
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CN202210791497.8A
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Chinese (zh)
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CN114976364A (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 application relates to an energy storage system which 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 mechanical support assembly comprises a cabinet body, a cabinet door hinged to the cabinet body and an anti-stab fireproof plate attached to the inner wall of the cabinet body and the cabinet door, the battery unit comprises a plurality of groups of energy storage batteries, the thermal 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 are used for bearing the energy storage batteries, a liquid cooling cavity for circulating cooling liquid is formed in the liquid cooling bearing plates, 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 the liquid cooling bearing plates in the width direction is communicated with the liquid outlet pipes, and the other end of the liquid cooling cavity is communicated with the liquid return pipes. 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 art, the energy storage system is an essential basic measure for development of micro-grid, island grid, distributed power generation system and new energy automobile rapid charging technology. The energy storage system is applied to the power system, so that the management on the demand side, peak clipping and valley filling, smooth load and rapid adjustment of the frequency of the power grid are realized, the running stability and reliability of the power grid are improved, and the impact of a new energy power generation system with large instantaneous change such as photovoltaic, wind power and the like 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 office buildings and the like, and is used for ensuring stable power supply in the places and improving the rationality of an energy management framework.
However, in the use process of the existing electrochemical type energy storage system, a great amount of heat is generated when the battery unit is charged and discharged, and the temperature rise caused by the heat generation can reduce the performance of the battery unit. When the heat generation is severe, the internal pressure of the battery cell increases, which causes a problem of ignition of the battery cell. In addition, the external unexpected physical factors can also cause the energy storage system to fire, if the shell of the energy storage system is punctured by the accidental impact, the battery unit is punctured by the shell to generate an electric arc, and then the fire explosion accident is caused. Therefore, how to improve the safety of the energy storage system is a technical problem to be solved.
With respect to the above related art, the inventor considers that the existing energy storage system is easy to generate fire accidents due to the heat generation of the battery unit or the external physical damage, and has potential safety hazards.
Disclosure of Invention
The application provides an energy storage system, which aims to solve the problem that the existing energy storage system is easy to cause fire accidents due to heating of a battery unit or external physical damage and has potential safety hazards.
In a first aspect, the present application provides an energy storage system, which adopts the following technical scheme:
the 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 in communication connection with each other; the mechanical support assembly comprises a cabinet body, a cabinet door hinged on the cabinet body and an anti-puncture fireproof plate attached on the inner wall 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 thermal 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 formed 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 the liquid cooling bearing plates in the width direction is communicated with the liquid outlet pipes, and the other end of the liquid cooling cavity of the liquid cooling bearing plates is communicated with the liquid return pipes; the liquid cooling bearing plates are provided with two clamping cooling plates for clamping and fixing the energy storage battery in a sliding mode, a cooling cavity for circulating cooling liquid is formed in the hollow part of each clamping cooling plate, one end of the length direction of each cooling cavity is communicated with a plurality of liquid outlet pipes, and the other end of each cooling cavity is communicated with a plurality of liquid return pipes.
Through adopting above-mentioned technical scheme, through the setting of thermal management module, the liquid cooling unit sets up with a plurality of liquid cooling loading board cooperation, can cool off the every group energy storage battery of battery unit, help improving energy storage system operation stability and security, through the setting of centre gripping cooling plate, the slip sets up on the liquid cooling bears the weight of the energy storage battery group that can adapt to different specifications, further cool off the energy storage battery when supplementary fixed energy storage battery, the phenomenon that gives off a large amount of heat when avoiding appearing the battery unit to charge and discharge and lead to the battery unit to fire is avoided, further improved energy storage system operation stability and security; in addition, through the anti-thorn fireproof plate that pastes the setting at the cabinet body and cabinet door inner wall, can effectively promote the whole anti-thorn fire behavior of energy storage system, when the external unexpected striking is to the cabinet body, anti-thorn fireproof plate can consolidate the cabinet body, protect the battery unit of the internal portion of cabinet, even the external striking is to the cabinet body, the anti-thorn fireproof plate can block the buffering to the foreign matter of penetrating the cabinet body, effectively avoid penetrating the foreign matter and cause the damage to the internal energy storage device of cabinet, and the electric spark that the external striking cabinet body produced of anti-thorn fireproof plate can effectively keep apart gets into the cabinet body, reach the effect of effectively improving energy storage system security performance.
Preferably, two support flow distribution plates which are arranged in a splayed manner are arranged in the liquid cooling cavity along the liquid cooling liquid flowing direction, and the liquid cooling cavity is divided by the two support flow distribution plates to form a first liquid cooling cavity, a second liquid cooling cavity and a third liquid cooling cavity which are trapezoid in cross section in sequence, wherein the width of one end of the first liquid cooling cavity and the width of one end of the third liquid cooling cavity, which are close to the liquid outlet pipe, are larger than the width of one end, which is close to the liquid outlet pipe, of the second liquid cooling cavity, and the width of one end, which is close to the liquid outlet pipe, of the second liquid cooling cavity is smaller than the width of one end, which is close to the liquid outlet pipe.
By adopting the technical scheme, the liquid cooling cavity can be supported and reinforced through the arrangement of the two splayed supporting flow dividing plates, and the stability of the whole structure of the liquid cooling supporting plate is improved; after the refrigerating fluid enters, the widths of the first liquid cooling cavity and the third liquid cooling cavity are sequentially reduced along the flowing direction of the refrigerating fluid, so that when the inflow rate of the refrigerating fluid is constant, the flow rates of the refrigerating fluid in the first liquid cooling cavity and the third liquid cooling cavity are improved due to the fact that the cross-sectional areas are continuously reduced, namely the residence time of the refrigerating fluid entering the first liquid cooling cavity and the third liquid cooling cavity is longer than that of the refrigerating fluid entering the second liquid cooling cavity; the same way gets into the coolant liquid velocity of flow of second liquid cooling cavity and reduces because of its cross-sectional area constantly increases, and its first half dwell time of coolant liquid that gets into second liquid cooling cavity is less than the dwell time of latter half, and then make the coolant liquid that gets into in first liquid cooling cavity and the third liquid cooling cavity mainly cool down the energy storage battery in first half, the coolant liquid that gets into second liquid cooling cavity can keep lower temperature mainly cool down the energy storage battery in latter half for the energy storage battery can obtain even cooling, avoids appearing the coolant liquid at the uniform velocity flow in the liquid cooling intracavity and leads to the coolant liquid to rise at first half heat transfer temperature to the not good phenomenon of latter half cooling effect, reaches the effect that effectively improves energy storage system thermal management performance.
Preferably, two arc-shaped flow dividing plates which are arranged in opposite directions and are arranged in brackets are arranged in the cooling cavity along the flowing direction of the cooling liquid, and the cooling cavity is divided by the two arc-shaped flow dividing plates to form a first cooling cavity, a second cooling cavity and a third cooling cavity in sequence.
Through adopting the technical scheme, through the arrangement of the arc-shaped flow dividing plates, the structural firmness of clamping the cooling plates is effectively improved, meanwhile, the cooling cavities are divided, when cooling liquid is conveyed into the first cooling cavity, the second cooling cavity and the third cooling cavity at a constant speed, the flow velocity of the cooling liquid in the first cooling cavity and the third cooling cavity is increased and then reduced due to the fact that the section of the cooling liquid is reduced and then enlarged, namely the residence time of the cooling liquid at two ends in the first cooling cavity and the third cooling cavity is longer; the flow rate 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 in the second cavity 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 the interior coolant liquid of first cooling cavity and third cooling cavity stop the cooling to the energy storage battery mainly in being close to drain pipe and the both ends of returning the liquid pipe, the coolant liquid in the second cooling cavity mainly cools down the cooling to the energy storage battery in the cooling cavity middle part, realizes the even cooling to the energy storage battery, reaches the effect that effectively improves energy storage system thermal management performance.
Preferably, the stab-resistant fireproof plate comprises a plurality of layers of first high-strength flame-retardant fiber layers, a first high-temperature-resistant elastic rubber layer, a metal mesh layer, a second high-temperature-resistant elastic rubber layer and a plurality of layers of second high-strength flame-retardant fiber layers which are sequentially arranged, wherein 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 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 to 6 times that of the 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 by external impact on the cabinet body can be effectively prevented from entering the cabinet body, and the safety and the reliability are improved; when the penetration kinetic energy of the penetrating foreign matters is larger, the first high-strength flame-retardant fiber layer breaks due to the action of shearing force, the foreign matters impact force generates tension waves in the penetration-resistant fireproof plate, the tension waves propagate along the axial direction of the fibers in continuous pulses, and the impacted fibers and other fibers interact through the rubber and staggered points, so that energy is absorbed in a quite large area, the penetration trend of the foreign matters is effectively restrained, and the penetration-resistant fireproof plate has higher penetration-resistant performance; in addition, through the arrangement of the metal mesh layer, the performance of the matrix of the stab-resistant fireproof plate can be effectively improved, foreign matters are blocked and limited when the foreign matters are stabbed, the puncture-resistant performance of the stab-resistant fireproof plate is further improved, and the effect of effectively reducing the probability of the energy storage system to be punctured 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 of the first high temperature resistant elastic rubber layer, which is far away from the metal layer.
Through adopting above-mentioned technical scheme, silicone rubber high temperature resistance can be good, can work for a long time under high temperature environment, effectively absorbs the relief to the foreign matter impact force, and can further promote first high temperature resistant elastic rubber layer buffering resilience performance through setting up a plurality of hemisphere elastic particle, helps improving the puncture-proof performance of puncture-proof PLASTIC LAMINATED.
Preferably, the thermal management module comprises an electric heating component, the input end of the electric heating component is connected with the metal mesh layer, and the electric heating component is used for conveying current to the metal mesh layer according to the instruction to heat the metal mesh layer so as to heat the inside of the cabinet body.
Through adopting above-mentioned technical scheme, through the setting of electrical heating subassembly, when thermal management module can be at the external environment bottom, the circular telegram of metal mesh layer heats the internal portion of cabinet, ensures that energy storage system keeps high-efficient operation, reaches the effect that effectively improves energy storage system operating efficiency.
Preferably, a plurality of auxiliary sliding grooves are formed in the top and the bottom of the liquid cooling bearing plate along the length direction of the liquid cooling bearing plate, auxiliary sliding blocks are arranged on the top and the bottom of the clamping cooling plate and are arranged in the auxiliary sliding grooves in a sliding mode, guide sliding rods are arranged in the auxiliary sliding grooves along the length direction of the auxiliary sliding grooves, and the guide sliding rods penetrate through the auxiliary sliding blocks.
Through adopting above-mentioned technical scheme, through the setting of auxiliary chute and auxiliary slider, help improving the slip stability of centre gripping cooling plate on the cooling loading board for centre gripping cooling plate and cooling loading board can be stabilized the cooperation and fixed and cool off energy storage battery, make energy storage system's battery cell can charge and discharge work safely and stably, reach the effect of effectively improving energy storage system fire prevention security performance.
Preferably, a fixed waist-shaped hole is formed in the lateral outer side groove wall of the auxiliary sliding groove along the length direction of the lateral outer side groove wall, a fixing bolt is arranged in the fixed waist-shaped hole in a penetrating mode, and the fixing bolt is in threaded connection with the auxiliary sliding block, and the end portion of the fixing bolt is in butt joint with the guide sliding rod.
Through adopting above-mentioned technical scheme, through the setting of fixed waist shape hole and fixing bolt, can fix the centre gripping fixed plate for two centre gripping cooling plates stabilize fixedly and cool off 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 connected with a man-machine interaction device, and the man-machine interaction device comprises a touch display and a control button.
Through adopting above-mentioned technical scheme, through the setting of human-computer interaction equipment, the managers of being convenient for manage and look over energy storage system, help improving energy storage system's management efficiency.
Preferably, the EMS energy management module is communicatively connected to a network cloud platform.
Through adopting above-mentioned technical scheme, through the setting of network cloud platform, the managers of being convenient for realize remote management energy storage system, realize energy storage system data upload storage, further improved energy storage system management efficiency and use convenience.
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 matched, each group of energy storage batteries of the battery unit can be cooled, the operation stability and the safety of the energy storage system can be improved, through the arrangement of the clamping cooling plates, the energy storage battery packs with different specifications can be adapted to the liquid cooling bearing, the energy storage batteries are further cooled while being fixed in an auxiliary manner, the phenomenon that a large amount of heat is emitted when the battery unit is charged and discharged to cause the ignition of the battery unit is avoided, and the operation stability and the safety of the energy storage system are further improved;
2. in addition, through the anti-stab fireproof plate attached to the inner walls of the cabinet body and the cabinet door, the whole anti-stab fireproof performance of the energy storage system can be effectively improved, when the cabinet body is stabbed by external accidental impact, the anti-stab fireproof plate can strengthen the cabinet body and protect battery units in the cabinet body, even if the cabinet body is stabbed by external impact, the anti-stab fireproof plate can block and buffer foreign matters penetrating the cabinet body, damage to energy storage devices in the cabinet body caused by the penetration of the foreign matters is effectively avoided, and electric sparks generated by the external impact on the cabinet body can be effectively isolated by the anti-stab fireproof plate to enter the cabinet body, so that the effect of effectively improving the safety performance of the energy storage system is achieved;
3. the liquid cooling cavity can be supported and reinforced through the arrangement of the two splayed supporting flow distribution plates, so that the stability of the whole structure of the liquid cooling support plate is improved; after the refrigerating fluid enters, the widths of the first liquid cooling cavity and the third liquid cooling cavity are sequentially reduced along the flowing direction of the refrigerating fluid, so that when the inflow rate of the refrigerating fluid is constant, the flow rates of the refrigerating fluid in the first liquid cooling cavity and the third liquid cooling cavity are improved due to the fact that the cross-sectional areas are continuously reduced, namely the residence time of the refrigerating fluid entering the first liquid cooling cavity and the third liquid cooling cavity is longer than that of the refrigerating fluid entering the second liquid cooling cavity; the flow rate of the cooling liquid entering the second liquid cooling cavity is reduced due to the fact that the cross-sectional 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 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 cooling effect 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 uniform 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 by external impact on the cabinet body can be effectively prevented from entering the cabinet body, and the safety and the reliability are improved; when the penetration kinetic energy of the penetrating foreign matters is larger, the first high-strength flame-retardant fiber layer breaks due to the action of shearing force, the foreign matters impact force generates tension waves in the penetration-resistant fireproof plate, the tension waves propagate along the axial direction of the fibers in continuous pulses, and the impacted fibers and other fibers interact through the rubber and staggered points, so that energy is absorbed in a quite large area, the penetration trend of the foreign matters is effectively restrained, and the penetration-resistant fireproof plate has higher penetration-resistant performance; in addition, through the arrangement of the metal mesh layer, the performance of the matrix of the stab-resistant fireproof plate can be effectively improved, foreign matters are blocked and limited when the foreign matters are stabbed, the puncture-resistant performance of the stab-resistant fireproof plate is further improved, and the effect of effectively reducing the probability of the energy storage system to be punctured by external impact is achieved.
Drawings
FIG. 1 is a system block diagram of an energy storage system in an embodiment of the application;
FIG. 2 is a schematic diagram of the overall structure of an energy storage system according to an embodiment of the present application;
FIG. 3 is a schematic diagram of a battery cell and thermal management unit in an embodiment of the application;
FIG. 4 is a schematic cross-sectional view of a liquid-cooled carrier plate according to an embodiment of the application;
FIG. 5 is a schematic cross-sectional view of a clamping cooling plate in an embodiment of the application;
FIG. 6 is a schematic diagram of a structure for clamping a cooling plate and a liquid-cooled carrier plate according to an embodiment of the present application;
FIG. 7 is a schematic view of the layer structure of the stab-resistant fire-retardant panel according to the embodiment of the application;
FIG. 8 is a schematic structural view of hemispherical elastic particles of a first high temperature resistant elastic rubber layer in an embodiment of the present application.
Reference numerals illustrate: 1. a mechanical support assembly; 11. a cabinet body; 12. a cabinet door; 13. an anti-stab fireproof plate; 131. a first high strength flame retardant fibrous 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 fibrous layer; 136. hemispherical elastic particles; 2. a battery unit; 21. an energy storage battery; 3. a thermal management module; 31. a liquid cooling assembly; 311. a liquid cooling unit; 312. a liquid cooling bearing plate; 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. a fixing 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 cooling cavity; 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 a network cloud platform.
Detailed Description
The application is described in further detail below with reference to fig. 1-8.
The embodiment of the application discloses an energy storage system. Referring to fig. 1 to 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 in communication connection with each other. The mechanical support component 1 comprises a cabinet body 11, a cabinet door 12 hinged on the cabinet body 11 and a stab-resistant fireproof 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 11. The battery unit 2 comprises several sets 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 chamber 7 through which the cooling liquid flows is hollow in the liquid cooling carrier plate 312, and 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 chamber 7 of the liquid cooling carrier plate 312 in the width 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. Two clamping cooling plates 315 for clamping and fixing the energy storage battery 21 are slidably arranged on the liquid cooling bearing plates 312, and a cooling cavity 8 for circulating cooling liquid is formed in the clamping cooling plates 315 in a hollow mode. 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, the cooperation of liquid cooling unit 311 and a plurality of liquid cooling loading board 312 sets up, can cool off every group energy storage battery 21 of battery unit 2, helps improving energy storage system operation stability and security. Through the setting of centre gripping cooling plate 315, slide the energy storage battery group that sets up on the liquid cooling bears and can adapt to different specifications, further cool off energy storage battery 21 when supplementary fixed energy storage battery 21, avoid appearing that battery unit 2 gives off a large amount of heats when carrying out charge and discharge and lead to battery unit 2 to fire the phenomenon, further improved energy storage system's stability and security of operation. In addition, through the anti-thorn fireproof plate 13 that pastes the setting at the inner wall of the cabinet body 11 and cabinet door 12, can effectively promote the whole anti-thorn fire behavior of energy storage system, when the external unexpected striking stings the cabinet body 11, the anti-thorn fireproof plate 13 can consolidate the cabinet body 11, protects the battery unit 2 of the internal portion of cabinet body 11. Even if the external impact pierces the cabinet body 11, the fireproof stab-resistant fireproof plate 13 can block and buffer the foreign matters penetrating the cabinet body 11, so that damage to the energy storage devices in the cabinet body 11 caused by the penetrating foreign matters is effectively avoided. And the fireproof stab-resistant fireproof plate 13 can effectively isolate electric sparks generated by external impact on the cabinet 11 from entering the cabinet 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 splayed support flow dividing plates 71 are provided in the liquid cooling chamber 7 in the liquid cooling liquid flow direction. The liquid cooling chamber 7 is divided by two support flow dividing plates 71 to form a first liquid cooling cavity 72, a second liquid cooling cavity 73 and a third liquid cooling cavity 74 which are trapezoid in cross section in sequence. Wherein the width of the first liquid cooling cavity 72 and the third liquid cooling cavity 74 near the outlet pipe 313 is greater than the width near the end of the return pipe 314. The width of the end of the second liquid cooling cavity 73 near the liquid outlet pipe 313 is smaller than the width of the end near the liquid return pipe 314. Through the setting of the support flow distribution plate 71 that two are splayed setting, can support the reinforcement to liquid cooling chamber 7, promote liquid cooling backup pad overall structure's stability. And the liquid cooling cavity 7 is separated by the two supporting flow dividing plates 71, after the refrigerant liquid enters, 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 refrigerant liquid, so that when the speed of the refrigerant liquid flowing into each cavity is constant, the flow rate of the refrigerant liquid in the first liquid cooling cavity 72 and the third liquid cooling cavity 74 is improved due to the continuous reduction of the cross-sectional area, namely the residence time of the refrigerant liquid entering the first liquid cooling cavity 72 and the third liquid cooling cavity 74 in the first half section is longer than the residence time in the second half section. The flow rate of the cooling liquid entering the second liquid cooling cavity 73 is reduced by the continuous increase of the cross-sectional area, that is, the residence time of the first half period of the cooling liquid entering the second liquid cooling cavity 73 is smaller than that of the second half period. And then the cooling liquid entering the first liquid cooling cavity 72 and the third liquid cooling cavity 74 mainly cools the energy storage battery 21 in the first half section, and the cooling liquid entering the second liquid cooling cavity 73 can keep a lower temperature and mainly cools the energy storage battery 21 in the second half section, so that the energy storage battery 21 can be uniformly cooled. The phenomenon that the cooling liquid is poor in cooling effect of the second half section due to the fact that the cooling liquid flows in the liquid cooling cavity 7 at a constant speed 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 provided in a bracket-like manner in the cooling chamber 8 in the direction of the flow of the cooling liquid. The cooling chamber 8 is divided by two arc-shaped dividing plates 81 to form a first cooling chamber 82, a second cooling chamber 83 and a third cooling chamber 84 in this order. Through the setting of arc flow distribution plate 81, the structural rigidity of centre gripping cooling plate 315 has effectively been improved, cuts apart cooling chamber 8 simultaneously. When the cooling liquid is supplied into 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 sections of the cooling liquid are reduced and then increased, that is, the residence time of the cooling liquid at two ends in the first cooling cavity 82 and the third cooling cavity 84 is longer. In the same way, 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 firstly increased and then decreased, namely the residence time of the cooling liquid in the middle part in the second cooling cavity 83 is longer. And then make the cooling fluid in first cooling cavity 82 and the third cooling cavity 84 stop mainly and cool down the cooling to the energy storage battery 21 near drain pipe 313 and the both ends of return liquid pipe 314, the cooling fluid in the second cooling cavity 83 is mainly in cooling cavity 8 middle part and cool down the cooling to the energy storage battery 21, realizes the even cooling to the energy storage battery 21, reaches the effect that effectively improves energy storage system thermal management performance.
Referring to fig. 6, auxiliary sliding grooves 316 are formed in the top and bottom of the plurality of liquid cooling carrier plates 312 along the length direction thereof, auxiliary sliding blocks 317 are arranged in the top and bottom of the clamping cooling plates 315, and the auxiliary sliding blocks 317 are slidably arranged in the auxiliary sliding grooves 316. A guide slide bar 318 is provided in the auxiliary slide groove 316 along the length direction thereof, and the guide slide bar 318 penetrates through the auxiliary slide bar 317. Through the setting of auxiliary chute 316 and auxiliary slider 317, help improving the slip stability of centre gripping cooling plate 315 on the cooling loading board for centre gripping cooling plate 315 and cooling loading board can be stably cooperate and fix and cool down energy storage battery 21. The battery unit 2 of the energy storage system can safely and stably perform charge and discharge work, and the effect of effectively improving the fireproof safety performance of the energy storage system is achieved.
Referring to fig. 6, a fixing waist hole 319 is formed in the side outer groove wall of the auxiliary chute 316 along the length direction thereof, and a fixing bolt 320 is inserted into the fixing waist hole 319. The fixing bolt 320 is screwed with the auxiliary slider 317 and the end portion abuts against the guide slide bar 318. Through the setting of fixed waist hole 319 and fixing bolt 320, can fix the centre gripping cooling plate 315 for two centre gripping cooling plates 315 stabilize fixedly and cool down energy storage battery 21, reach the effect that effectively improves energy storage system cooling fire behavior.
Referring to fig. 7, the stab-resistant flame retardant panel 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 to 6 times that of the steel wire, and the aramid fiber has good insulativity and ageing resistance. The first high temperature resistant elastic rubber layer 132 and the second high temperature resistant elastic rubber layer 134 are both made of silicone rubber. The silicone rubber has good high temperature resistance, can work for a long time in a high temperature environment, and can effectively absorb and relieve the impact force of the foreign matters. Through the setting of the fire-retardant fibrous layer 131 of first high strength, can prevent effectively that external striking cabinet body 11 from producing the electric spark and getting into the cabinet body 11 inside, improve fail safe nature. The stab-resistant fireproof plate 13 is formed by compounding three materials of fiber, rubber and metal, when the stab-resistant fireproof plate is impacted against the outside, the stab-resistant foreign matters are firstly blocked by the first high-strength flame-retardant fiber layer 131, and at the moment, the stab-resistant kinetic energy is absorbed by the first high-temperature-resistant elastic rubber layer 132, so that the stab-resistant foreign matters are effectively restrained from stab-resistant trend. When the kinetic energy of the penetrating foreign matter is larger, the first high-strength flame retardant fiber layer 131 breaks due to the action of shearing force, the impact force of the foreign matter generates tension waves inside the anti-penetration fireproof plate 13, the tension waves propagate along the axial direction of the fiber in continuous pulse, and the impacted fiber and other fibers interact through rubber and staggered points, so that the energy is absorbed on a quite large area, the penetrating trend of the foreign matter is effectively restrained, and the high anti-penetration performance is achieved. In addition, through the arrangement of the metal mesh layer 133, the performance of the matrix of the stab-resistant fireproof plate 13 can be effectively improved, foreign matters are blocked and limited when the foreign matters are stabbed, the puncture-resistant performance of the stab-resistant fireproof plate 13 is further improved, and the effect of effectively reducing the probability of the energy storage system to be punctured by external impact is achieved.
Referring to fig. 7 and 8, a plurality of hemispherical elastic particles 136 are disposed on a side of the first high temperature resistant elastic rubber layer 132 remote from the metal layer. The buffering resilience performance of the first high temperature resistant elastic rubber layer 132 can be further improved by arranging a plurality of hemispherical elastic particles 136, which is helpful for improving the puncture-proof performance of the puncture-proof fireproof plate 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 sends electric current to the metal mesh layer 133 according to the instruction to heat the metal mesh layer 133 and further heat the interior of the cabinet 11. Through the setting of electrical heating assembly 32, thermal management module 3 can be when external environment is surmounted, to the metal mesh layer 133 circular telegram heat up the internal portion of cabinet 11, ensures that energy storage system keeps high-efficient operation, reaches the effect of effectively improving energy storage system operating efficiency. In addition, when the external environment of the energy storage system is low for a long time, a layer of PI heating film can be arranged inside the cabinet 11 and connected with the electric heating component 32, and the internal environment of the cabinet 11 is heated to raise the temperature at the same time, so that the energy storage system can be ensured to operate efficiently.
Referring to fig. 1 and 2, the ems energy management module 6 and the BMS battery management module 5 are commonly connected with a man-machine interaction device 9, and the man-machine interaction device 9 includes a touch display 91 and control buttons 92. Through the setting of human-computer interaction equipment 9, the management personnel of being convenient for manage and look over energy storage system, help improving energy storage system's management efficiency. The EMS energy management module 6 is communicatively connected to the network cloud platform 10. Through the setting of the network cloud platform 10, a manager is convenient to realize remote management of the energy storage system, uploading and storing of the data of the energy storage system are realized, and the management efficiency and the use convenience of the energy storage system are further improved.
The above embodiments are only for illustrating the technical solution of the present application, and not for limiting the scope of the present application. It will be apparent that the described embodiments are merely some, but not all, embodiments of the application. Based on these embodiments, all other embodiments that may be obtained by one of ordinary skill in the art without inventive effort are within the scope of the application. Although the present application has been described in detail with reference to the above embodiments, those skilled in the art may still combine, add or delete features of the embodiments of the present application or make other adjustments according to circumstances without any conflict, so as to obtain different technical solutions without substantially departing from the spirit of the present application, which also falls within the scope of the present application.

Claims (8)

1. An energy storage system, characterized by: the energy 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 communication connection with each other; the mechanical support assembly (1) comprises a cabinet body (11), a cabinet door (12) hinged on the cabinet body (11) and an anti-puncture 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 in the cabinet body (11) and are 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), 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) in the width direction of the liquid cooling bearing plates (312) is communicated with the liquid outlet pipes (313), and the other end of the liquid cooling cavity is communicated with the liquid return pipes (314); two clamping cooling plates (315) for clamping and fixing the energy storage battery (21) are arranged on the liquid cooling bearing plates (312) in a sliding manner, a cooling cavity (8) for circulating cooling liquid is formed in the clamping cooling plates (315) in a hollow manner, 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 of the cooling cavity is communicated with a plurality of liquid return pipes (314);
two splayed supporting flow distribution plates (71) are arranged in the liquid cooling cavity (7) along the liquid cooling liquid flowing direction, a first liquid cooling cavity (72), a second liquid cooling cavity (73) and a third liquid cooling cavity (74) with trapezoid cross sections are sequentially formed in the liquid cooling cavity (7) under the separation of the two supporting flow distribution plates (71), the width of one end, close to a liquid outlet pipe (313), of the first liquid cooling cavity (72) and the width of one end, close to a liquid return pipe (314), of the third liquid cooling cavity (74) are larger than the width of one end, close to the liquid outlet pipe (313), of the second liquid cooling cavity (73) is smaller than the width of one end, close to the liquid return pipe (314);
two arc-shaped flow dividing plates (81) which are arranged in opposite directions and are arranged in a bracket mode 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-shaped flow dividing plates (81) to form a first cooling cavity (82), a second cooling cavity (83) and a third cooling cavity (84) in sequence.
2. The energy storage system of claim 1, wherein: the stab-resistant fireproof plate (13) comprises a plurality of layers of first high-strength flame-retardant fiber layers (131), a first high-temperature-resistant elastic rubber layer (132), a metal net layer (133), a second high-temperature-resistant elastic rubber layer (134) and a plurality of layers of second high-strength flame-retardant fiber layers (135) which are sequentially arranged, wherein the first high-strength flame-retardant fiber layers (131) and the second high-strength flame-retardant fiber layers (135) are woven by aramid fibers.
3. The energy storage system of claim 2, 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, far away from the metal layer, of the first high-temperature-resistant elastic rubber layer (132).
4. The energy storage system of claim 2, 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) is used for conveying current to the metal mesh layer (133) according to an instruction to heat the metal mesh layer (133) so as to heat the inside of the cabinet body (11).
5. The energy storage system of claim 1, wherein: the auxiliary sliding grooves (316) are formed in the top and the bottom of the liquid cooling bearing plates (312) along the length direction of the liquid cooling bearing plates, auxiliary sliding blocks (317) are arranged at the top and the bottom of the clamping cooling plates (315), the auxiliary sliding blocks (317) are arranged in the auxiliary sliding grooves (316) in a sliding mode, guide sliding rods (318) are arranged in the auxiliary sliding grooves (316) along the length direction of the auxiliary sliding grooves, and the guide sliding rods (318) penetrate through the auxiliary sliding blocks (317).
6. The energy storage system of claim 5, wherein: the outer side groove wall of the auxiliary sliding groove (316) is provided with a fixed waist-shaped hole (319) along the length direction, a fixing bolt (320) is arranged in the fixed waist-shaped hole (319) in a penetrating mode, the fixing bolt (320) is in threaded connection with the auxiliary sliding block (317), and the end portion of the fixing bolt is in butt joint with the guide sliding rod (318).
7. 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 man-machine interaction device (9) together, and the man-machine interaction device (9) comprises a touch display (91) and a control button (92).
8. 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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