CN118099605B - Energy storage device with cold and hot double flow channels and fire control method - Google Patents
Energy storage device with cold and hot double flow channels and fire control method Download PDFInfo
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- CN118099605B CN118099605B CN202410497925.5A CN202410497925A CN118099605B CN 118099605 B CN118099605 B CN 118099605B CN 202410497925 A CN202410497925 A CN 202410497925A CN 118099605 B CN118099605 B CN 118099605B
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- 238000004146 energy storage Methods 0.000 title claims abstract description 63
- 238000000034 method Methods 0.000 title claims abstract description 21
- 238000001816 cooling Methods 0.000 claims abstract description 80
- 239000007788 liquid Substances 0.000 claims abstract description 73
- 238000007789 sealing Methods 0.000 claims abstract description 37
- 230000000712 assembly Effects 0.000 claims abstract description 29
- 238000000429 assembly Methods 0.000 claims abstract description 29
- 238000004891 communication Methods 0.000 claims abstract description 13
- 230000006698 induction Effects 0.000 claims abstract description 4
- 239000000779 smoke Substances 0.000 claims description 18
- 230000003014 reinforcing effect Effects 0.000 claims description 15
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- 239000003063 flame retardant Substances 0.000 claims description 12
- 239000000463 material Substances 0.000 claims description 12
- 239000004964 aerogel Substances 0.000 claims description 11
- 238000009413 insulation Methods 0.000 claims description 11
- 230000000149 penetrating effect Effects 0.000 claims description 8
- 239000003795 chemical substances by application Substances 0.000 claims description 7
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 6
- 230000000007 visual effect Effects 0.000 claims description 6
- 229910000831 Steel Inorganic materials 0.000 claims description 5
- 239000010959 steel Substances 0.000 claims description 5
- 238000005219 brazing Methods 0.000 claims description 4
- 239000000919 ceramic Substances 0.000 claims description 3
- 239000000835 fiber Substances 0.000 claims description 3
- 239000003365 glass fiber Substances 0.000 claims description 3
- 238000001746 injection moulding Methods 0.000 claims description 3
- 239000000377 silicon dioxide Substances 0.000 claims description 3
- 238000012544 monitoring process Methods 0.000 claims description 2
- 235000012239 silicon dioxide Nutrition 0.000 claims description 2
- 210000004027 cell Anatomy 0.000 abstract description 56
- 210000003850 cellular structure Anatomy 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 25
- 238000010586 diagram Methods 0.000 description 6
- 230000009977 dual effect Effects 0.000 description 4
- 238000004880 explosion Methods 0.000 description 4
- 230000017525 heat dissipation Effects 0.000 description 4
- 210000005056 cell body Anatomy 0.000 description 3
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- IGEZMQWPBDNNPS-UHFFFAOYSA-N B.CO Chemical compound B.CO IGEZMQWPBDNNPS-UHFFFAOYSA-N 0.000 description 1
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Classifications
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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
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C3/00—Fire prevention, containment or extinguishing specially adapted for particular objects or places
- A62C3/16—Fire prevention, containment or extinguishing specially adapted for particular objects or places in electrical installations, e.g. cableways
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C31/00—Delivery of fire-extinguishing material
- A62C31/02—Nozzles specially adapted for fire-extinguishing
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
-
- 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
- H01M10/6561—Gases
- H01M10/6563—Gases with forced flow, e.g. by blowers
-
- 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
- H01M50/233—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
- H01M50/30—Arrangements for facilitating escape of gases
-
- 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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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Health & Medical Sciences (AREA)
- Public Health (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Secondary Cells (AREA)
Abstract
The invention discloses an energy storage device with cold and hot double flow channels and a fire control method, wherein the energy storage device comprises a plurality of battery cell components; the liquid cooling plate assemblies are closely arranged below the plurality of battery cell assemblies; the main box body is hermetically arranged on the liquid cooling plate assembly, and the fire control induction assembly is fixedly arranged at the front end of the main box body; the battery pack control management module, the main explosion-proof valve, the fire-fighting nozzle, the positive and negative quick plugs and the communication interface penetrate through the front end of the box body assembly in a sealing mode; the battery cell assembly comprises a plurality of battery cell main bodies and a CCS integrated busbar. According to the invention, through the hot-flow gas channel arranged above the energy storage device, the gas in the hot-flow gas channel can only move towards the front end in the energy storage device, meanwhile, the fire-fighting sensing assembly can rapidly detect and sense high-temperature high-pressure gas, and the liquid cooling plate assembly can be cooled rapidly at the initial stage of thermal runaway, is not influenced by the hot-flow channel of the gas above, and effectively solves the problem that the existing energy storage device cannot intervene in the thermal runaway as early as possible.
Description
Technical Field
The invention relates to the technical field of energy storage, in particular to an energy storage device with cold and hot double flow channels and a fire control method.
Background
The energy storage device is an energy storage unit integrating functional components such as a main battery box, an electric core, a cooling device, a signal acquisition device and the like, is generally applied to energy storage and energy supply occasions, and in order to ensure the insulation reliability of the whole energy storage device after assembly, the main battery box is subjected to sealing treatment. However, considering that in the actual use of the energy storage device, the internal temperature can have fluctuation to cause the fluctuation of internal air pressure, in order to avoid the failure of the main battery box body caused by the fluctuation of air pressure, and to ensure that the pressure release can be timely carried out when the energy storage device is out of control, so as to eliminate potential safety hazards, the explosion-proof valve can be designed and installed on the main battery box body.
For the air-cooled energy storage battery pack with lower cost, as the heat conduction coefficient of air is extremely low and the specific heat is low, the air does not have enough sensible heat to absorb the temperature of the battery, and meanwhile, an air duct is required to be designed in the air-cooled battery pack, so that the air can be contacted with a battery cell to take away heat as much as possible, and the heat exchange efficiency of the air-cooled battery pack is extremely low; air outside the air-cooled battery pack is refrigerated by an air conditioner inside the energy storage system, and the energy efficiency of the energy storage system is low due to low heat exchange efficiency; when the battery is in thermal runaway, fresh wind is continuously supplied to the thermal runaway battery cell, and sufficient oxygen is supplied, so that the battery pack is more prone to thermal expansion, and the safety is reduced.
The liquid cooling module adopts a liquid cooling pipeline to directly exchange heat with the battery pack cooling plate, the liquid cooling pipeline has less contact with the outside, the heat exchange efficiency is high, and the comprehensive heat exchange energy consumption is reduced by 20 percent relative to air cooling heat dissipation; the temperature difference in the battery compartment of the liquid cooling module can be controlled within the range of 3-5 ℃, the air cooling heat dissipation temperature difference can only be controlled within the range of 5-8 ℃, the charge and discharge of the battery cells are the interconversion of electrochemical energy and electric energy, the battery cells are sensitive to temperature, and the low temperature difference energy among thousands of battery cells in a single energy storage direct current prefabricated compartment keeps good consistency in use. Most of the liquid cooling energy storage battery packs currently adopt a submerged fire-fighting mode, some manufacturers adopt a cluster-level fire-fighting mode, and few fire-fighting modes are designed for single packs. The adoption of the immersed fire control and the cluster-level fire control is triggered under the condition that the battery pack fails and the flammable gas or the thermal runaway is detected in the cabin, so that the problems that the occurrence of the problems cannot be prevented from being enlarged at the first time when the problems occur in the battery pack, but the problems that the passive treatment is serious cannot be accurately controlled and intervened as soon as possible, and the fire and the explosion of the energy storage battery can be caused; the liquid cooling energy storage battery pack which is designed for fire protection for a small number of single packs can realize single pack immersion injection, but the explosion-proof valve is currently arranged on the front panel of the main box body, when the internal pressure of the battery pack is large enough, the internal pressure gas of the battery pack is easily caused to be sprayed to the door plate, and if the door is opened at the moment, the great potential safety hazard is brought; therefore, the energy storage device with the cold and hot double flow channels and the fire control method are provided, and the problem that the existing energy storage device cannot intervene in thermal runaway as early as possible is solved.
Disclosure of Invention
One of the purposes of the present invention is to provide an energy storage device with two cold and hot channels and a fire control method, so as to solve the problem that the existing energy storage device cannot intervene in thermal runaway as early as possible.
The invention relates to an energy storage device with cold and hot double flow channels and a fire control method, which can be realized by the following technical scheme:
The invention relates to an energy storage device with cold and hot double flow channels, which comprises a plurality of cell assemblies, wherein the plurality of cell assemblies are arranged in parallel to form groups, two adjacent cell assemblies are clung, and a safety gap is arranged between the two adjacent cell assemblies; the liquid cooling plate assembly is closely arranged below the plurality of battery cell assemblies; the box body assembly is arranged on the liquid cooling plate assembly in a sealing manner, the plurality of battery cell assemblies are fixedly arranged at the rear end of a hollow cavity surrounded by the liquid cooling plate assembly and the box body assembly, a certain space is reserved at the front end of the cavity, a fire-fighting sensing assembly is arranged in the cavity, and the fire-fighting sensing assembly can monitor the temperature, the smoke, the CO concentration and the H2 concentration at the front end of the cavity in real time; the battery pack control management module, the main explosion-proof valve, the fire-fighting nozzle, the positive and negative quick plugs and the communication interface penetrate through the front end of the box body assembly in a sealing mode;
The battery cell assembly comprises a plurality of battery cell main bodies which are clung back to form a row, and each battery cell main body is provided with a battery cell explosion-proof valve; the upper parts of the plurality of battery cell main bodies are electrically connected with a CCS integrated busbar, at least one heat flow channel is arranged on the CCS integrated busbar, at least one heat flow channel is in sealing contact with the inner wall of the box body assembly to form a gas channel, and the gas in the gas channel can only move to the front end of a cavity formed by the liquid cooling plate assembly and the box body assembly in a surrounding mode; and a plurality of first through holes are formed in the heat flow channel in a penetrating manner, and the positions of the first through holes respectively correspond to the positions of the corresponding battery cell explosion-proof valves.
In one embodiment, an aerogel heat-insulating flame-retardant material is arranged between two adjacent cell bodies; the main components of the aerogel heat insulation flame retardant material are glass fiber, ceramic fiber or silicon dioxide.
In one embodiment, end covers are respectively arranged at the head end and the tail end of the plurality of battery cell main bodies; at least one binding band is respectively arranged on the plurality of cell main bodies and the two end covers.
In one embodiment, the liquid cooling plate assembly comprises a liquid cooling plate main body, which is closely arranged below the plurality of electric core assemblies; two supporting plates respectively and fixedly arranged on two opposite sides of the liquid cooling plate main body; a plurality of reinforcing ribs arranged on the liquid cooling plate main body.
In one embodiment, the liquid cooling plate body is integrally formed by stamping and brazing, wherein a plurality of liquid cooling channels are arranged, and the liquid cooling channels are uniformly distributed below the plurality of battery cell assemblies.
In one embodiment, the supporting plates are made of roll-pressed steel, a plurality of reinforcing cross beams are arranged between the two supporting plates, and the reinforcing cross beams are respectively connected with the liquid cooling plate main body by rivet pulling screws.
In one embodiment, the case assembly includes a main case and a front cover; the main box body is a hollow cavity body and is integrally formed by injection molding; the front cover is arranged on the main box body in a sealing way; the sealing groove is formed in the connection part of the main box body and the liquid cooling plate assembly in a surrounding mode, and the sealing groove is internally provided with a sealing strip.
In one embodiment, a convex rib is arranged at a position, corresponding to the heat flow channel, of the inner wall of the main box body, and the convex rib is in sealing contact with the heat flow channel to form a gas channel.
In one embodiment, the main box body is provided with a plurality of second through holes in a penetrating manner, and the battery pack control management module, the main explosion-proof valve, the fire-fighting nozzle, the positive and negative quick plugs and the communication interface are respectively sealed to penetrate through the main box body through the corresponding second through holes.
The invention discloses a fire control method for cold and hot double channels, which is applied to any energy storage device, and comprises the following steps:
s1, a fire-fighting sensing assembly monitors the temperature, smoke, CO concentration and H2 concentration in the energy storage device in real time, and when the temperature, smoke and/or gas concentration are detected to meet the corresponding conditions, primary early warning, secondary early warning or tertiary early warning is respectively carried out;
s2, when primary early warning or secondary early warning is carried out, the fire control host machine carries out primary early warning of the host machine, the battery cabin audible and visual alarm is started, and meanwhile primary early warning signals are uploaded to the battery management system and the station control background host machine;
When the third-level early warning is performed, the fire engine performs the second-level early warning of the main engine, starts the battery cabin audible and visual alarm, closes the exhaust fan and the air inlet shutter, and simultaneously uploads the second-level early warning signal to the battery management system and the station control background main engine;
S3, when the host computer performs secondary early warning, a certain delay time is passed to see whether an emergency stop signal exists; if an emergency stop signal is present, emergency stop; if the emergency stop signal is not generated, the cluster-level electromagnetic valve is opened, so that the fire extinguishing agent reaches the package-level fire-fighting nozzle to be sprayed, and the fire extinguishing agent is released over against the hot runner;
S4, monitoring whether the energy storage device has a re-burning phenomenon or not by the fire control sensing assembly; if not, ending the task; if so, cabin-level fire protection measures are started.
Compared with the prior art, the energy storage device with the cold and hot double flow channels and the fire control method have the beneficial effects that:
According to the cold and hot double-runner energy storage device and the fire control method, the electric core explosion-proof valve is aligned with the corresponding first through hole, the convex ribs on the inner wall of the main box body and the heat flow channel form the sealing gas runner, the single electric core main body is in thermal runaway, and high-temperature and high-pressure gas can only enter the front end in the energy storage device along the sealing gas runner, so that the main explosion-proof valve can be opened fastest, and the high-temperature and high-pressure gas can be effectively prevented from being filled in the whole energy storage device; meanwhile, high-temperature high-pressure gas can be quickly conducted to the fire-fighting sensing assembly, so that the fire-fighting nozzle starts to work, fire-fighting operation can be quickly performed, and the problem that the existing energy storage device cannot intervene in thermal runaway as early as possible is effectively solved;
according to the energy storage device with the cold and hot double flow channels and the fire control method, the hot flow channels and the liquid cooling flow channels are respectively arranged on the upper side and the lower side of the battery cell assembly, and the cold flow channels and the hot flow channels are separated, so that the cold flow channels can be cooled quickly in the initial stage of thermal runaway, are not influenced by the hot flow channels, and can reduce the spread of the thermal runaway to a certain extent; meanwhile, the liquid cooling plate adopts a stamping brazing process, a reinforcing rib structure is arranged on the back surface of the liquid cooling plate, and the side beams adopt a rolling steel riveting process, so that the weight of the energy storage device can be reduced to a certain extent, and meanwhile, the strength of the energy storage device is reliable and is not feared to transport.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a cold and hot dual-channel energy storage device according to the present invention;
FIG. 2 is a schematic diagram of an explosion structure of the cold and hot dual-channel energy storage device of FIG. 1, comprising a battery cell assembly, a liquid cooling plate assembly and a main box body;
FIG. 3 is a schematic diagram of an explosion structure of a cell assembly in the energy storage device of FIG. 2, including a CCS integrated busbar;
FIG. 4 is a schematic diagram of the structure of the CCS integrated busbar of FIG. 3;
FIG. 5 is a schematic diagram of an explosion structure of a liquid cooling plate assembly in the energy storage device with dual cold and hot channels according to the present invention shown in FIG. 2, including a liquid cooling plate main body;
FIG. 6 is a schematic view of the liquid cooling plate body shown in FIG. 5;
FIG. 7 is a schematic diagram of a main housing of the energy storage device of FIG. 2 with dual cold and hot channels according to the present invention;
FIG. 8 is a flow chart of a method for controlling the fire control of a ladle stage with cold and hot double channels according to the present invention.
The figures indicate: 11, a battery cell assembly; 111, a cell body; 1111, a cell explosion-proof valve; 112, aerogel insulation flame retardant material; 113, an end cap; 114, a strap; 115, ccs integrated busbar; 1151, a heat flow channel; 1152, a first via; 12, a liquid cooling plate assembly; 121, a liquid cooling plate body; 1211, liquid-cooled flow channels; 122, a pallet; 123, reinforcing ribs; 13, a box assembly; 131, a main box; 1311, sealing the groove; 1312, protruding ribs; 1313, second vias; 132, a front cover; 1321, sealing rings; 14, a battery pack control management module; 15, a main explosion-proof valve; 16, a fire-fighting sensing assembly; 17, a fire nozzle; 18, positive and negative output joints; 19, a communication interface; 20, sealing strips.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments. The components of the embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1 and 2, the energy storage device with dual cold and hot channels of the present invention includes a plurality of battery core assemblies 11, a liquid cooling plate assembly 12, a box assembly 13, a battery pack control management module 14, a main explosion-proof valve 15, a fire-fighting sensing assembly 16, a fire-fighting nozzle 17, a positive and negative output connector 18 and a communication interface 19; the plurality of battery cell assemblies 11 are arranged in parallel and are grouped, two adjacent battery cell assemblies 11 are clung, and a safety gap is arranged between the two battery cell assemblies; the liquid cooling plate assembly 12 is closely arranged below the plurality of battery cell assemblies 11, and performs heat dissipation operation on the plurality of battery cell assemblies 11; the box body assembly 13 is arranged on the liquid cooling plate assembly 12 in a sealing way, a sealed hollow cavity is formed by the box body assembly 13 and the liquid cooling plate assembly, the plurality of battery cell assemblies 11 are fixedly arranged at the rear end of the cavity, a certain space is reserved at the front end of the cavity, the fire-fighting sensing assembly 16 is fixedly arranged in the front end of the cavity, and the temperature, the smoke, the CO concentration and the H2 concentration in the cavity are monitored in real time; the battery pack control management module 14, the main explosion-proof valve 15, the fire-fighting nozzle 17, the anode and cathode output connectors 18 and the communication interface 19 are respectively and hermetically arranged at the front end of the box body assembly 13 in a penetrating way; specifically, the battery pack control management module 14, the fire nozzle 17, the positive and negative output connectors 18 and the communication interface 19 are respectively and hermetically arranged on the front end face of the box assembly 13 in a penetrating manner, and the main explosion-proof valve 15 is arranged on the front end side face of the box assembly 13 in a penetrating manner; the battery pack control management module 14 is electrically connected with the battery cell assembly 11, the liquid cooling plate assembly 12, the fire control induction assembly 16, the fire control nozzle 17, the positive and negative electrode output connector 18 and the communication interface 19 respectively; when the liquid cooling plate assembly 12 and the box body assembly 13 enclose that the pressure and the temperature in the front end of the cavity reach the opening pressure of the main explosion-proof valve 15, the main explosion-proof valve 15 will be opened; when the fire-fighting sensing assembly 16 senses that the temperature, smoke, CO concentration and/or H2 concentration in the front end of the cavity enclosed by the liquid cooling plate assembly 12 and the box assembly 13 reach a certain preset value, the fire-fighting nozzle 17 is opened. In this embodiment, the two electric core assemblies 11 are arranged in parallel and disposed at the rear end of the cavity surrounded by the liquid cooling plate assembly 12 and the box assembly 13; in other embodiments, the number of the battery modules 11 may be three, four or other plural, and the specific number thereof is set according to actual requirements.
Referring to fig. 2 and 3, the battery cell assembly 11 includes a plurality of battery cell main bodies 111, and the plurality of battery cell main bodies 111 are closely attached back to back in a row, specifically, each battery cell main body 111 is provided with a battery cell explosion-proof valve 1111; an aerogel heat insulation flame-retardant material 112 is arranged between two adjacent cell main bodies 111, the aerogel heat insulation flame-retardant material 112 has remarkable heat insulation and flame retardant effects, and simultaneously has the advantages of light weight, low density, low heat conductivity coefficient and the like, and when the cell main bodies 111 adjacent to the aerogel heat insulation flame-retardant material 112 are out of control, the aerogel heat insulation flame-retardant material 112 can play roles in isolating temperature and inhibiting the spread of thermal runaway; end covers 113 are respectively arranged at the head end and the tail end of the plurality of battery cell main bodies 111; at least one binding band 114 is respectively arranged on the plurality of cell main bodies 111 and the two end covers 113, and the binding band is used for carrying out the trapping binding operation on the plurality of cell main bodies 111 and the two end covers 113 so as to integrate the cell main bodies 111 and the two end covers 113; a CCS integrated busbar 115 is electrically connected above the plurality of the cell main bodies 111, the CCS integrated busbar 115 adopts an integrated design, and in this embodiment, the binding belt 114 adopts a steel belt; two rows of the cell bodies 111 share one of the CCS integration bus bars 115; the main component of the aerogel heat insulation flame retardant material 112 is glass fiber; in other embodiments, the aerogel thermal insulation flame retardant material 112 can also be ceramic fiber or silica as the thermal insulation material.
Referring to fig. 3 and 4, at least one heat flow channel 1151 is disposed on the CCS integrated busbar 115, and at least one heat flow channel 1151 is in sealing contact with an inner wall of the box assembly 13 to form a gas channel, so that gas in the heat flow channel 1151 moves towards a front end of a cavity defined by the liquid cooling plate assembly 12 and the box assembly 13; the heat flow channel 1151 is provided with a plurality of first through holes 1152, the positions of the plurality of first through holes 1152 respectively correspond to the positions of the corresponding electric core explosion-proof valves 1111 on the electric core main body 111, when one of the electric core main bodies 111 is out of control, the generated high-temperature and high-pressure gas opens the electric core explosion-proof valve 1111 thereon, so that the electric core explosion-proof valve 1111 enters the heat flow channel 1151 to move towards the front end of the cavity surrounded by the liquid cooling plate assembly 12 and the box assembly 13, and when the pressure and the temperature in the front end of the cavity reach the opening pressure of the main explosion-proof valve 15, the main explosion-proof valve 15 will be opened; at the same time, the fire control nozzle 17 will be opened when the fire control sensing assembly 16 senses that the temperature, smoke, CO concentration and/or H2 concentration in the front end of the cavity reaches a certain preset value.
Referring to fig. 2, 5 and 6, in the present embodiment, the liquid cooling plate assembly 12 includes a liquid cooling plate main body 121, two supporting plates 122 and a plurality of reinforcing ribs 123; the liquid cooling plate body 121 is closely arranged below the plurality of the battery cell assemblies 11, and performs heat dissipation operation on the plurality of the battery cell assemblies 11; the two supporting plates 122 are respectively and fixedly arranged on two opposite sides of the liquid cooling plate main body 121; a plurality of the reinforcing ribs 123 are provided on the liquid cooling plate main body 121; the support plate 122 and the plurality of reinforcing ribs 123 support the liquid-cooling plate body 121, thereby reinforcing the load-bearing capacity of the liquid-cooling plate body 121. Specifically, the liquid cooling plate body 121 is integrally formed by stamping and brazing; the supporting plates 122 are made of roll-pressed steel, a plurality of reinforcing cross beams are arranged between the two supporting plates 122, and the reinforcing cross beams are respectively connected with the liquid cooling plate main body 121 by rivet pulling screws; the material of the liquid cooling plate main body 121 adopts an Al 3003O state, and the yield strength and the tensile strength are respectively 50Mpa and 150Mpa; the splint 122 is made of HC550/980, and has yield strength and tensile strength of 550Mpa and 980Mpa respectively; the reinforcing rib 123 is made of Al5083, and has yield strength and tensile strength of 125Mpa and 275Mpa respectively; through the rivet pulling process, the stress of the liquid cooling plate main body 121 can be greatly reduced, so that the strength of the energy storage device is ensured. In this embodiment, the liquid cooling plate body 121 is provided with a plurality of liquid cooling channels 1211, and the plurality of liquid cooling channels 1211 are uniformly distributed below the plurality of battery cell assemblies 11, so as to facilitate the heat conduction operation of the heat generated by the battery cell assemblies 11.
Referring to fig. 2 and 7, in the present embodiment, the case assembly 13 includes a main case 131 and a front cover 132; the main case 131 is a square hollow cavity, and is integrally formed by injection molding; the front cover 132 is hermetically disposed on the main casing 131, and maintenance and repair operations on components in the main casing 131 are facilitated by removing the front cover 132. Specifically, a sealing groove 1311 is provided around the connection portion between the main tank 131 and the liquid cooling plate assembly 12, a sealing strip 20 is provided in the sealing groove 1311, so that the liquid cooling plate assembly 12 and the tank assembly 13 are in sealing connection, and the protection level of the energy storage device can reach IP67, preferably, the sealing strip 20 is made of rubber, a protruding rib 1312 is provided at a position corresponding to the heat flow channel 1151 on the inner wall of the main tank 131, and the protruding rib 1312 is in sealing contact connection with the heat flow channel 1151, so that the gas in the heat flow channel 1151 can only move to the front end of the cavity surrounded by the liquid cooling plate assembly 12 and the tank assembly 13, but not freely diffuse into the cavity surrounded by the liquid cooling plate assembly 12 and the tank assembly 13; the main box 131 is provided with a plurality of second through holes 1313 in a penetrating manner, and the battery pack control management module 14, the main explosion-proof valve 15, the fire-fighting nozzle 17, the positive and negative output connectors 18 and the communication interface 19 respectively pass through the main box 131 in a sealing manner through the corresponding second through holes 1313; the connection part between the front cover 132 and the main case 131 is provided with a sealing ring 1321, and the sealing performance between the front cover 132 and the main case 131 is enhanced by the sealing ring 1321.
Referring to fig. 1 and 2, in the present embodiment, the battery pack control management module 14 is electrically connected to the battery cell assembly 11, the liquid cooling plate assembly 12, the fire control sensing assembly 16, the fire control nozzle 17, the positive and negative output connectors 18, and the communication interface 19, respectively, and the control technology adopted is the prior art, so specific control processes and models thereof are not repeated herein, and only the present application is satisfied; the main explosion-proof valve 15, the fire-fighting sensing assembly 16, the fire-fighting nozzle 17, the positive and negative output connectors 18 and the communication interface 19 are all of the prior art, so that specific working processes and types of the main explosion-proof valve are not repeated herein, and only the main explosion-proof valve is required to meet the requirements of the present application; specifically, the fire sensing assembly 16 is an integrated sensing device that is capable of sensing temperature, smoke, CO concentration, and H2 concentration simultaneously.
Referring to fig. 8, the fire control method of the present invention for a dual cooling and heating channels is applied to any one of the above energy storage devices, and includes the following steps:
s1, the fire-fighting sensing assembly 16 monitors the temperature, smoke, CO concentration and H2 concentration in the energy storage device in real time, and performs primary early warning when any one of the following conditions is met:
A. The temperature is more than 72 ℃;
B.CO＞190ppm;
C. Smoke alarm;
D.H2>200ppm;
and when any one of the following conditions is met, carrying out secondary early warning:
E. the temperature is more than 75 ℃ and the smoke alarm is carried out;
F. the temperature is more than 75 ℃ and CO is more than 2000ppm;
G. The temperature is more than 75 ℃ and H2 is more than 500ppm;
H. smoke alarm and CO > 2000ppm;
I. smoke alarm and H2 > 500ppm
And when any one of the following conditions is met, performing three-level early warning:
J. The temperature is more than 80 ℃ and the smoke alarm is carried out;
K. The temperature is more than 80 ℃ and CO is more than 3000ppm;
L, temperature > 80 ℃ and H2 > 1000ppm;
m, smoke alarming, wherein CO is more than 3000ppm;
N, smoke alarming, wherein H2 is more than 1000ppm;
s2, when primary early warning or secondary early warning is carried out, the fire control host machine carries out primary early warning of the host machine, the battery cabin audible and visual alarm is started, and meanwhile primary early warning signals are uploaded to a Battery Management System (BMS) and a station control background host machine;
When the third-level early warning is performed, the fire engine performs the second-level early warning of the main engine, starts the battery cabin audible and visual alarm, closes the exhaust fan and the air inlet shutter, and simultaneously uploads a second-level early warning signal to the Battery Management System (BMS) and the station control background main engine;
S3, when the host computer performs secondary early warning, a certain delay time is passed to see whether an emergency stop signal exists; if an emergency stop signal is present, emergency stop; if the emergency stop signal is not generated, the cluster-level electromagnetic valve is opened, so that the fire extinguishing agent reaches the package-level fire-fighting nozzle to be sprayed, and the fire extinguishing agent is released over against the hot runner;
s4, the fire control sensing assembly 16 monitors whether the energy storage device has a re-burning phenomenon or not; if not, ending the task; and if so, starting cabin-level fire-fighting measures.
It should be noted that the working process of the energy storage device with cold and hot double channels and the fire control method is as follows: when one of the cell main bodies 111 is out of control, the cell explosion-proof valve 1111 thereon is opened, and since the cell explosion-proof valve 1111 is aligned with the corresponding first through hole 1152 on the CCS integrated busbar 115, and the ribs 1312 on the inner wall of the box assembly 13 form a sealed gas flow path with the heat flow channel 1151, a large amount of heat is released after the cell main body 111 is out of control, a large amount of high temperature and a large amount of gas are generated, the high temperature and high pressure gas can flow to the front end of the cavity surrounded by the liquid cooling plate assembly 12 and the box assembly 13 along the sealed gas flow path to the maximum extent, and when the pressure and the temperature of the front end reach the opening pressure of the main explosion-proof valve 15, the main explosion-proof valve 15 will be opened; the sealing gas flow channel can discharge high temperature and gas to the front end of the energy storage device to the greatest extent, so that the main explosion-proof valve 15 can be opened fastest, and the high temperature and high pressure gas is prevented from being filled in the whole energy storage device; meanwhile, high-temperature high-pressure gas can be quickly conducted to the fire-fighting sensing assembly 16, when the fire-fighting sensing assembly 16 senses that the temperature, smoke, CO concentration and/or H2 concentration in the high-temperature high-pressure gas reach a certain setting, the cluster-level electromagnetic valve is opened at the moment, the fire-fighting nozzle 17 is opened, and fire extinguishing agent is sprayed through the fire-fighting nozzle 17, so that fire-fighting operation can be quickly performed.
The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
The above examples illustrate only a few embodiments of the invention, which are described in detail and are not to be construed as limiting the scope of the invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention. Accordingly, the scope of protection of the present invention is to be determined by the appended claims.
Claims (8)
1. An energy storage device with cold and hot double flow channels, which is characterized by comprising:
The plurality of battery cell assemblies are arranged in parallel and are in groups, two adjacent battery cell assemblies are clung, and a safety gap is arranged between the two battery cell assemblies;
The liquid cooling plate assembly is closely arranged below the plurality of battery cell assemblies;
The box body assembly is arranged on the liquid cooling plate assembly in a sealing manner, the plurality of battery cell assemblies are fixedly arranged at the rear end of a hollow cavity surrounded by the liquid cooling plate assembly and the box body assembly, a certain space is reserved at the front end of the cavity, a fire-fighting induction assembly is fixedly arranged in the cavity, and the fire-fighting induction assembly can monitor the temperature, smoke, CO concentration and H2 concentration at the front end of the cavity in real time; the battery pack control management module, the main explosion-proof valve, the fire-fighting nozzle, the positive and negative quick plugs and the communication interface penetrate through the front end of the box body assembly in a sealing mode;
the battery cell assembly comprises a plurality of battery cell main bodies which are clung back to form a row, and each battery cell main body is provided with a battery cell explosion-proof valve; the upper parts of the plurality of battery cell main bodies are electrically connected with a CCS integrated busbar, at least one heat flow channel is arranged on the CCS integrated busbar, at least one heat flow channel is in sealing contact with the inner wall of the box body assembly to form a gas channel, and the gas in the gas channel can only move to the front end of a cavity formed by the liquid cooling plate assembly and the box body assembly in a surrounding mode; the heat flow channel is internally provided with a plurality of first through holes in a penetrating way, and the positions of the first through holes respectively correspond to the positions of the corresponding battery cell explosion-proof valves;
The box body assembly comprises a main box body and a front cover; the main box body is a hollow cavity body and is integrally formed by injection molding; the front cover is arranged on the main box body in a sealing way; a sealing groove is formed in the connection part of the main box body and the liquid cooling plate assembly in a surrounding mode, and a sealing strip is arranged in the sealing groove; convex ribs are arranged on the inner wall of the main box body at positions corresponding to the heat flow channels, and the convex ribs are in sealing contact with the heat flow channels to form gas channels.
2. The energy storage device with cold and hot double flow channels according to claim 1, wherein aerogel heat insulation flame retardant materials are arranged between two adjacent cell main bodies; the aerogel heat-insulating flame-retardant material comprises glass fiber, ceramic fiber or silicon dioxide.
3. The energy storage device with cold and hot double flow channels according to claim 1, wherein end covers are respectively arranged at the head end and the tail end of the plurality of cell main bodies; at least one binding band is respectively arranged on the plurality of cell main bodies and the two end covers.
4. The energy storage device of claim 1, wherein the liquid cooling plate assembly comprises a liquid cooling plate body which is closely arranged below the plurality of cell assemblies; two supporting plates respectively and fixedly arranged on two opposite sides of the liquid cooling plate main body; a plurality of reinforcing ribs arranged on the liquid cooling plate main body.
5. The energy storage device of claim 4, wherein the liquid cooling plate body is integrally formed by stamping and brazing, a plurality of liquid cooling channels are arranged in the liquid cooling plate body, and the plurality of liquid cooling channels are uniformly distributed below the plurality of battery cell assemblies.
6. The energy storage device with cold and hot double flow channels according to claim 4, wherein the supporting plates are made of rolled steel, a plurality of reinforcing cross beams are arranged between the two supporting plates, and the reinforcing cross beams are respectively connected with the liquid cooling plate main body by rivet pulling screws.
7. The energy storage device with double cold and hot flow channels according to claim 1, wherein a plurality of second through holes are formed in the main box body in a penetrating mode, and the battery pack control management module, the main explosion-proof valve, the fire-fighting nozzle, the positive and negative quick plugs and the communication interface are respectively penetrated through the main box body in a sealing mode through the corresponding second through holes.
8. A fire control method for a cold and hot double flow passage, which is applied to the energy storage device of any one of claims 1 to 7, and is characterized by comprising the following steps:
s1, a fire-fighting sensing assembly monitors the temperature, smoke, CO concentration and H2 concentration in the energy storage device in real time, and when the temperature, smoke and/or gas concentration are detected to meet the corresponding conditions, primary early warning, secondary early warning or tertiary early warning is respectively carried out;
s2, when primary early warning or secondary early warning is carried out, the fire control host machine carries out primary early warning of the host machine, the battery cabin audible and visual alarm is started, and meanwhile primary early warning signals are uploaded to the battery management system and the station control background host machine;
When the third-level early warning is performed, the fire engine performs the second-level early warning of the main engine, starts the battery cabin audible and visual alarm, closes the exhaust fan and the air inlet shutter, and simultaneously uploads the second-level early warning signal to the battery management system and the station control background main engine;
S3, when the host computer performs secondary early warning, a certain delay time is passed to see whether an emergency stop signal exists; if an emergency stop signal is present, emergency stop; if the emergency stop signal is not generated, the cluster-level electromagnetic valve is opened, so that the fire extinguishing agent reaches the package-level fire-fighting nozzle to be sprayed, and the fire extinguishing agent is released over against the hot runner;
S4, monitoring whether the energy storage device has a re-burning phenomenon or not by the fire control sensing assembly; if not, ending the task; if so, cabin-level fire protection measures are started.
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| CN117374464A (en) * | 2023-11-21 | 2024-01-09 | 北京双杰电气股份有限公司 | Safe high-integration liquid cooling energy storage battery pack |
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| WO2024002383A1 (en) * | 2022-06-29 | 2024-01-04 | 常州博瑞电力自动化设备有限公司 | Immersion energy storage battery thermal management system and fire control method |
| CN117374464A (en) * | 2023-11-21 | 2024-01-09 | 北京双杰电气股份有限公司 | Safe high-integration liquid cooling energy storage battery pack |
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