CN220873666U - Intelligent energy storage system capable of blocking chain type thermal runaway reaction - Google Patents
Intelligent energy storage system capable of blocking chain type thermal runaway reaction Download PDFInfo
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- CN220873666U CN220873666U CN202322454606.XU CN202322454606U CN220873666U CN 220873666 U CN220873666 U CN 220873666U CN 202322454606 U CN202322454606 U CN 202322454606U CN 220873666 U CN220873666 U CN 220873666U
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- energy storage
- thermal runaway
- storage cabinet
- battery
- battery module
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- 238000004146 energy storage Methods 0.000 title claims abstract description 69
- 238000006243 chemical reaction Methods 0.000 title claims abstract description 19
- 230000000903 blocking effect Effects 0.000 title claims abstract description 17
- 239000000779 smoke Substances 0.000 claims abstract description 26
- 238000012544 monitoring process Methods 0.000 claims abstract description 22
- 238000001514 detection method Methods 0.000 claims abstract description 20
- 239000000110 cooling liquid Substances 0.000 claims abstract description 17
- 238000001802 infusion Methods 0.000 claims description 29
- 230000000007 visual effect Effects 0.000 claims description 9
- 239000002826 coolant Substances 0.000 claims description 7
- 238000012546 transfer Methods 0.000 claims description 3
- 230000002159 abnormal effect Effects 0.000 abstract description 13
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract description 12
- 239000001301 oxygen Substances 0.000 abstract description 12
- 229910052760 oxygen Inorganic materials 0.000 abstract description 12
- 239000007789 gas Substances 0.000 abstract description 8
- 238000004880 explosion Methods 0.000 abstract description 5
- 239000007921 spray Substances 0.000 abstract description 2
- 238000007726 management method Methods 0.000 description 19
- 239000007788 liquid Substances 0.000 description 11
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 3
- 238000000354 decomposition reaction Methods 0.000 description 3
- 239000003792 electrolyte Substances 0.000 description 3
- GELKBWJHTRAYNV-UHFFFAOYSA-K lithium iron phosphate Chemical compound [Li+].[Fe+2].[O-]P([O-])([O-])=O GELKBWJHTRAYNV-UHFFFAOYSA-K 0.000 description 3
- 230000006978 adaptation Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 206010000369 Accident Diseases 0.000 description 1
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 239000004964 aerogel Substances 0.000 description 1
- 238000003491 array Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 210000001787 dendrite Anatomy 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000007772 electrode material Substances 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- UKACHOXRXFQJFN-UHFFFAOYSA-N heptafluoropropane Chemical compound FC(F)C(F)(F)C(F)(F)F UKACHOXRXFQJFN-UHFFFAOYSA-N 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 230000002427 irreversible effect Effects 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 239000007774 positive electrode material Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000003892 spreading Methods 0.000 description 1
- 230000007480 spreading Effects 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000002341 toxic gas Substances 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Abstract
The utility model particularly discloses an intelligent energy storage system capable of blocking a chain type thermal runaway reaction, which utilizes a monitoring module and a smoke detection device to monitor the real-time states of a battery module and an energy storage cabinet in real time, when the monitoring module in the system monitors abnormal temperature information of the battery module and the smoke detection device detects that smoke exists in the energy storage cabinet, the battery management system can control an automatic fire extinguisher to release a gas medium so as to isolate oxygen corresponding to the abnormal battery module to extinguish open fire, and then control cooling liquid in a cooling liquid tank to spray to the abnormal battery module so as to enable the abnormal battery module to quickly cool down, thereby effectively blocking the chain type thermal runaway reaction, avoiding fire and explosion accidents even if the energy storage system encounters oxygen in the air.
Description
Technical Field
The utility model relates to the technical field of energy storage, in particular to an intelligent energy storage system capable of blocking a chained thermal runaway reaction.
Background
In the traditional industrial park, the equipment runs long, has large load and high power in the daytime, and is just opposite at night, the load is small, the power is small, and a large amount of waste electricity is generated; due to load instability, a shortage or an excess of power supply occurs, and an energy storage system is required to adjust the balance of supply and demand. The energy storage system is operative in that, first, it can achieve the storage and release of electrical energy to balance the difference between grid load demand and power supply; secondly, the energy storage system can also provide short-time high-power output, so that sudden load demands in the industrial production process are met; in addition, the system can also provide Uninterrupted Power Supply (UPS) function, so that key equipment and data can be ensured to continue to run and be stored when power is interrupted. Therefore, energy storage systems play an irreplaceable critical role in the industry and commerce.
At present, the main stream energy storage system uses lithium iron phosphate as an energy storage carrier to store and release electric energy so as to meet the electricity requirements of different users and different scenes. The safety of the lithium iron phosphate energy storage system is better than that of the early ternary system, but the occurrence of fire accidents of the energy storage system still cannot be fundamentally avoided, and the reason is that the lithium iron phosphate and the ternary system also have thermal runaway risks. There are many causes for thermal runaway such as overheating, overcharging, internal short circuits (lithium dendrites, burrs, etc.), collisions, abuse, etc.; the thermal runaway of the battery is usually started from the local abnormal temperature rise of the battery, then the diaphragm is contracted and melted, the positive electrode and the negative electrode are directly short-circuited, the electrolyte is subjected to decomposition reaction, the electrolyte reacts with the negative electrode through SEI film decomposition, a large amount of high-temperature combustible toxic gases (H 2、C2H4、CH4、C2H6, C 3H6、CO2 and CO) are generated, meanwhile, the positive electrode active material is thermally decomposed to separate out oxygen, and the thermal runaway is started. As the short circuit area continues to expand, the generated heat continuously increases the temperature, which in turn accelerates the decomposition reaction of the electrode material and electrolyte in the interior, and the temperature rise is further increased; meanwhile, a large amount of heat can be transferred to adjacent batteries or battery modules through the conduction or radiation mode of the connecting piece, if the spreading trend cannot be blocked timely and effectively, a vicious circle is formed, a chain reaction is initiated, more battery thermal runaway is triggered, and the thermal runaway process becomes irreversible, and the industry is called chain thermal runaway.
If the battery shell is damaged or the pressure is continuously increased, the high-temperature expanded gas can break through the battery shell to jet out high-temperature combustible gas, and once the high-temperature combustible gas encounters oxygen in the air, combustion can occur, so that fire and explosion accidents are caused. At present, after an energy storage system fires, a gas extinguisher such as heptafluoropropane and aerogel is generally adopted to extinguish the fire by isolating oxygen, but the battery cannot be cooled in the mode, and once external oxygen enters, the battery is reburned to generate a fire explosion accident.
Disclosure of utility model
In order to solve the technical problems, the utility model provides an intelligent energy storage system capable of blocking a chain thermal runaway reaction, which comprises an energy storage cabinet, a battery management system, a cooling liquid tank and a liquid conveying pipe, wherein a plurality of battery modules are arranged in the energy storage cabinet, a quick connector, an infusion pump and a monitoring module for monitoring temperature information of the battery modules are arranged in each battery module, the output end of the quick connector is arranged in the corresponding battery module, the input end of the quick connector is communicated with the output end of the corresponding infusion pump, the input end of each infusion pump is communicated with the cooling liquid tank through the liquid conveying pipe, an automatic fire extinguisher and at least one smoke detection device for detecting whether smoke exists in the energy storage cabinet are arranged in the energy storage cabinet, and the monitoring module, the automatic fire extinguisher, the infusion pump and the smoke detection device are all connected with the battery management system.
Preferably, the infusion tube is provided with an infusion pump, the infusion pump is positioned between the cooling liquid tank and the infusion branch pump, and the infusion pump is connected with the battery management system.
Preferably, a plurality of battery module arrays are distributed in the energy storage cabinet, and smoke detection devices fixed on the energy storage cabinet are arranged above each row of battery modules.
Preferably, an audible and visual alarm connected with the battery management system is arranged on the outer side of the energy storage cabinet.
Preferably, a plurality of battery modules are arranged in the energy storage cabinet in an isolated manner from the automatic fire extinguisher.
Preferably, the system further comprises a monitoring platform, wherein the monitoring platform is connected with the battery management system and used for visually displaying the alarm information of the audible and visual alarm and transmitting the alarm information to the battery management system.
Compared with the prior art, the intelligent energy storage system capable of blocking the chained thermal runaway reaction provided by the utility model has the advantages that when the monitoring module in the system monitors abnormal temperature information of the battery module and the smoke detection device detects smoke in the energy storage cabinet, the battery management system controls the automatic fire extinguisher to release a gas medium to isolate oxygen from extinguishing open fire of the corresponding battery module, then controls the cooling liquid in the cooling liquid tank to spray to the abnormal battery module so as to enable the abnormal battery module to be cooled down quickly, even if the energy storage system encounters oxygen in the air, the oxygen can not be reburned, thereby effectively blocking the chained thermal runaway reaction, avoiding fire and explosion accidents, and the system has the characteristics of simple structure and accurate control.
Drawings
FIG. 1 is a schematic diagram of a smart energy storage system capable of blocking a thermal runaway reaction in a chain type according to the present utility model,
Fig. 2 is a schematic diagram of a coolant delivery system according to the present utility model.
In the figure: 1. the system comprises an energy storage cabinet, a battery management system, a cooling liquid tank, a liquid conveying pipe, a battery module, an infusion pump, an automatic fire extinguisher, a smoke detection device, an infusion pump and an audible and visual alarm.
Detailed Description
The utility model will be described more fully hereinafter with reference to the accompanying drawings and the preferred embodiments for facilitating an understanding of the structure and method of operation of the utility model, but the scope of the utility model is not limited to the specific embodiments described. It should be noted that, under the condition of not affecting the use effect, the structural features and the sizes of the components in the embodiment of the utility model can be changed, the connection mode can be replaced, and the size of the device can be changed.
Unless defined otherwise, all technical and scientific terms used hereinafter have the same meaning as commonly understood by one of ordinary skill in the art. The terms "first," "second," and the like in the description and in the claims, do not denote any order, quantity, or importance, but rather are used to facilitate distinguishing between corresponding features. Also, the terms "a" or "an" and the like do not denote a limitation of quantity, but rather denote the presence of at least one. The terms "connected" or "connected" and the like are not limited to a direct connection, but may be indirectly connected through other intermediate connections. "above", "below", "one side", "the other side", "vertical", "lateral", etc. are used only to indicate a relative positional relationship, which changes when the absolute position of the object to be described changes accordingly.
As shown in fig. 1 and 2, the intelligent energy storage system capable of blocking a chained thermal runaway reaction provided by the utility model comprises an energy storage cabinet 1, a battery management system 2, a cooling liquid tank 3 and a liquid conveying pipe 4, wherein a plurality of battery modules 5 are arranged in the energy storage cabinet 1, a quick connector (not shown in the drawing) and a liquid conveying pump 10 and a monitoring module (not shown in the drawing) for monitoring temperature information of the battery modules 5 are arranged in each battery module 5, wherein the output end of the quick connector is arranged in the corresponding battery module 5, the input end of the quick connector is communicated with the output end of the corresponding liquid conveying pump 10, the input end of each liquid conveying pump 10 is communicated with the cooling liquid tank 3 through the liquid conveying pipe 4, an automatic fire extinguisher 6 and at least one smoke detection device 7 for detecting whether smoke exists in the energy storage cabinet 1 are further arranged in the energy storage cabinet 1, and the monitoring module, the automatic fire extinguisher 6, the liquid conveying pump 10 and the smoke detection device 7 are all connected with the battery management system 2.
In this embodiment, the automatic fire extinguisher 6 is a fire extinguisher capable of automatically releasing an oxygen-isolated gas medium based on control of the battery management system 2, the cooling liquid tank 3 is disposed at the outer side of the energy storage cabinet 1, and the cooling liquid in the cooling liquid tank 3 is at least one of water, transformer oil, a mixture of water and ethylene glycol; the smoke detection means 7 is a smoke sensor, and in other embodiments, may be any apparatus or device capable of detecting the presence of smoke in the energy storage cabinet 1.
In this embodiment, the quick connector and the infusion pump 10 correspondingly disposed on each battery module 5 may be configured as a module, so that the production efficiency of the component can be effectively improved based on the modular design, the production cost of the component is reduced, and the disassembly, assembly and maintenance efficiency of the component can be improved; the infusion pump 10 is a direct current pump driven by a direct current motor, and the voltage of the direct current motor is DC24V or DC12V.
In this embodiment, the temperature information of each battery module 5 can be monitored in real time and transmitted to the battery management system 2 by using a plurality of monitoring modules, when the temperature information of one or more battery modules 5 is abnormal and the smoke detection device 7 detects that smoke is generated in the energy storage cabinet 1, the battery management system 5 controls the automatic fire extinguisher 6 to release a gas medium to isolate oxygen in the corresponding battery module 5 and extinguish naked flame, then the abnormal battery module 5 is rapidly cooled and physically isolated by using cooling liquid in the cooling liquid tank 3, even if oxygen in air is encountered, the oxygen in air cannot be reburnt, so that the chained thermal runaway reaction can be stopped in time, the occurrence of fire and explosion accidents is avoided, and the device has the characteristics of simple structure and accurate control.
The abnormal temperature information of the battery module 5 means that the temperature of the battery module 5 reaches 85 ℃ and continuously rises rapidly at 2 ℃/s, and the battery management system 2 can accurately locate the abnormal battery module 5 by using the monitoring module.
As shown in fig. 1 and 2, the infusion tube 4 is provided with an infusion pump 8, the infusion pump 8 is located between the cooling liquid tank 3 and the infusion pump 10, and the infusion pump 8 is connected with the battery management system 2.
In this embodiment, the infusion pump 8 is disposed outside the energy storage cabinet 1. Through set up the transfer pump 8 that is connected with battery management system 2 between coolant tank 3 and infusion branch pump 10, can enough improve the delivery pressure of coolant liquid, also can more accurate effectual control coolant liquid in the coolant tank 3 transmit to unusual battery module 5 in simultaneously and carry out quick cooling.
As shown in fig. 1, a plurality of battery modules 5 are distributed in the energy storage cabinet 1 in an array, and a smoke detection device 7 fixed on the energy storage cabinet 1 is installed above each row of battery modules 5.
In this embodiment, a plurality of battery modules 5 are arranged in the energy storage cabinet 1, so that the appearance inside the energy storage cabinet 1 is attractive, and meanwhile, the arrangement of components, circuits and pipelines in the energy storage cabinet 1 is facilitated, and moreover, the smoke detection device 7 is arranged above each row of battery modules 5, so that the instantaneity and accuracy of smoke detection in the energy storage cabinet 1 are greatly improved.
As shown in fig. 1, an audible and visual alarm 9 connected with the battery management system 2 is arranged on the outer side of the energy storage cabinet 1.
In this embodiment, when the smoke detection device 7 detects that smoke appears in the energy storage cabinet 1, the audible and visual alarm 9 based on the arrangement sends out alarm information, so as to remind operators that the energy storage system may be abnormal, and a guarantee is provided for further occurrence of chain thermal runaway.
As shown in fig. 1, a plurality of battery modules 5 are arranged in the energy storage cabinet 1 in a separated manner from the automatic fire extinguisher 6.
In this embodiment, the battery module 5 and the automatic fire extinguisher 6 are arranged on two sides of the energy storage cabinet 1 in an isolated manner, so that the normal operation of the battery module 5 is ensured.
The system also comprises a monitoring platform (not shown in the figure), wherein the monitoring platform is connected with the battery management system 2 and is used for visually displaying the alarm information of the audible and visual alarm 9 and transmitting the alarm information to the battery management system 2.
In this embodiment, based on the set monitoring platform, the monitoring information of the monitoring module and the smoke detection information of the smoke detection device 7 can be visually displayed, and meanwhile, the alarm information of the audible and visual alarm 9 and the state information of the energy storage system can be displayed, so that a data basis is provided for the operation of an operator, and meanwhile, the energy storage system can work in an optimal state, so that the stable operation and the safe operation of the energy storage system are ensured, wherein the state information of the energy storage system comprises the state of charge SOC, the state of health SOH, the total voltage, the total current, the temperature difference of each single battery in the battery module, the highest voltage of the single battery module, the lowest voltage of the single battery module and the voltage difference of each single battery in the single battery module.
The intelligent energy storage system capable of blocking the chain thermal runaway reaction is described in detail. The principles and embodiments of the present utility model have been described herein with reference to specific examples, the description of which is intended only to facilitate an understanding of the core concepts of the utility model. It should be noted that it will be apparent to those skilled in the art that various modifications and adaptations of the utility model can be made without departing from the principles of the utility model and these modifications and adaptations are intended to be within the scope of the utility model as defined in the following claims.
Claims (6)
1. The utility model provides an intelligent energy storage system capable of blocking chain thermal runaway reaction, its characterized in that, including energy storage cabinet (1), battery management system (2), coolant tank (3) and transfer line (4), be provided with a plurality of battery module (5) in energy storage cabinet (1), all be equipped with quick-operation joint and infusion pump (10) in each battery module (5) and be used for monitoring battery module (5) temperature information's monitoring module, wherein, quick-operation joint's output is arranged in corresponding battery module (5), quick-operation joint's input communicates with the output of corresponding infusion pump (10), the input of each infusion pump (10) all communicates with coolant tank (3) through transfer line (4), still be equipped with automatic fire extinguisher (6) and at least one smog detection device (7) that are used for detecting smog in energy storage cabinet (1), monitoring module, automatic fire extinguisher (6), infusion pump (10) and smog detection device (7) all are connected with smog battery management system (2).
2. The intelligent energy storage system capable of blocking a chained thermal runaway reaction according to claim 1, wherein an infusion pump (8) is arranged on the infusion tube (4), the infusion pump (8) is positioned between the cooling liquid tank (3) and the infusion sub-pump (10), and the infusion pump (8) is connected with the battery management system (2).
3. The intelligent energy storage system capable of blocking a chain thermal runaway reaction according to claim 1, wherein a plurality of battery modules (5) are distributed in the energy storage cabinet (1) in an array mode, and a smoke detection device (7) fixed on the energy storage cabinet (1) is arranged above each row of battery modules (5).
4. The intelligent energy storage system capable of blocking a chain thermal runaway reaction according to claim 1, wherein an audible and visual alarm (9) connected with a battery management system (2) is arranged on the outer side of the energy storage cabinet (1).
5. The intelligent energy storage system capable of blocking a chain thermal runaway reaction according to claim 1, wherein a plurality of battery modules (5) are arranged in the energy storage cabinet (1) in a separated mode from an automatic fire extinguisher (6).
6. The intelligent energy storage system capable of blocking a thermal runaway reaction in a chain of claim 4, further comprising a monitoring platform connected to the battery management system (2) for visually displaying the alarm information of the audible and visual alarm (9) and transmitting the alarm information to the battery management system (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322454606.XU CN220873666U (en) | 2023-09-11 | 2023-09-11 | Intelligent energy storage system capable of blocking chain type thermal runaway reaction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322454606.XU CN220873666U (en) | 2023-09-11 | 2023-09-11 | Intelligent energy storage system capable of blocking chain type thermal runaway reaction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220873666U true CN220873666U (en) | 2024-04-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322454606.XU Active CN220873666U (en) | 2023-09-11 | 2023-09-11 | Intelligent energy storage system capable of blocking chain type thermal runaway reaction |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220873666U (en) |
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2023
- 2023-09-11 CN CN202322454606.XU patent/CN220873666U/en active Active
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