CN114010989A - Intelligent fire fighting system for battery energy storage system and working method of intelligent fire fighting system - Google Patents

Intelligent fire fighting system for battery energy storage system and working method of intelligent fire fighting system Download PDF

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Publication number
CN114010989A
CN114010989A CN202111191718.XA CN202111191718A CN114010989A CN 114010989 A CN114010989 A CN 114010989A CN 202111191718 A CN202111191718 A CN 202111191718A CN 114010989 A CN114010989 A CN 114010989A
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China
Prior art keywords
fire
battery
fighting
fire fighting
energy storage
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Pending
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CN202111191718.XA
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Chinese (zh)
Inventor
吴涵
范元亮
黄兴华
方略斌
陈伟铭
李泽文
余帆
孙俊敏
张振宇
王健
钱健
黄毅标
吴振辉
甘露
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Electric Power Research Institute of State Grid Fujian Electric Power Co Ltd
State Grid Fujian Electric Power Co Ltd
Fujian Times Nebula Technology Co Ltd
Original Assignee
Electric Power Research Institute of State Grid Fujian Electric Power Co Ltd
State Grid Fujian Electric Power Co Ltd
Fujian Times Nebula Technology Co Ltd
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Application filed by Electric Power Research Institute of State Grid Fujian Electric Power Co Ltd, State Grid Fujian Electric Power Co Ltd, Fujian Times Nebula Technology Co Ltd filed Critical Electric Power Research Institute of State Grid Fujian Electric Power Co Ltd
Priority to CN202111191718.XA priority Critical patent/CN114010989A/en
Publication of CN114010989A publication Critical patent/CN114010989A/en
Pending legal-status Critical Current

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    • AHUMAN NECESSITIES
    • A62LIFE-SAVING; FIRE-FIGHTING
    • A62CFIRE-FIGHTING
    • A62C3/00Fire prevention, containment or extinguishing specially adapted for particular objects or places
    • A62C3/16Fire prevention, containment or extinguishing specially adapted for particular objects or places in electrical installations, e.g. cableways
    • AHUMAN NECESSITIES
    • A62LIFE-SAVING; FIRE-FIGHTING
    • A62CFIRE-FIGHTING
    • A62C31/00Delivery of fire-extinguishing material
    • AHUMAN NECESSITIES
    • A62LIFE-SAVING; FIRE-FIGHTING
    • A62CFIRE-FIGHTING
    • A62C37/00Control of fire-fighting equipment
    • A62C37/36Control of fire-fighting equipment an actuating signal being generated by a sensor separate from an outlet device
    • A62C37/38Control of fire-fighting equipment an actuating signal being generated by a sensor separate from an outlet device by both sensor and actuator, e.g. valve, being in the danger zone
    • A62C37/40Control of fire-fighting equipment an actuating signal being generated by a sensor separate from an outlet device by both sensor and actuator, e.g. valve, being in the danger zone with electric connection between sensor and actuator
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00Secondary cells; Manufacture thereof
    • H01M10/42Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/425Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00Secondary cells; Manufacture thereof
    • H01M10/42Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/48Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10Energy storage using batteries

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  • Electrochemistry (AREA)
  • Public Health (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Health & Medical Sciences (AREA)
  • General Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Battery Mounting, Suspending (AREA)
  • Fire-Extinguishing By Fire Departments, And Fire-Extinguishing Equipment And Control Thereof (AREA)

Abstract

The invention relates to an intelligent fire-fighting system for a battery energy storage system and a working method thereof, wherein the system comprises an energy storage battery unit, a fire-fighting device, a fire-fighting linkage control system and an audible and visual alarm device, wherein the energy storage battery unit comprises an electric box, a battery module, a battery management system, a fire sensing sensor, a fire branch pipe and an electromagnetic valve, the fire branch pipe is arranged at the upper part in the electric box, and the electromagnetic valve is arranged at the tail end of the fire branch pipe; the fire fighting device comprises a fire fighting pipeline, a pressure pump, a fire fighting medium storage tank and an insulating liquid storage tank, wherein the fire fighting medium storage tank is connected with the fire fighting pipeline, the insulating liquid storage tank is connected with the fire fighting pipeline through the pressure pump, the fire fighting pipeline is connected with a fire fighting branch pipe in the electric box, and the fire fighting linkage control system is connected with the acousto-optic alarm device; the battery management system is respectively and electrically connected with the battery module, the fire sensing sensor and the electromagnetic valve, and is also in data communication with the fire-fighting linkage control system. The system is beneficial to improving the working safety of the battery energy storage system.

Description

Intelligent fire fighting system for battery energy storage system and working method of intelligent fire fighting system
Technical Field
The invention belongs to the technical field of battery energy storage, and particularly relates to an intelligent fire fighting system for a battery energy storage system and a working method of the intelligent fire fighting system.
Background
The battery energy storage power station is not a power station in the traditional sense, but the battery energy storage system can completely play the role of the power station in a certain specific time and space; moreover, due to incomparable response speed and control accuracy, the frequency modulation and peak regulation effects of the rotary power generating device far exceed those of all traditional rotary power generating devices; the AGC and AVC functions are inherent to the battery energy storage system and have no suspense and pressure when being used; and the battery energy storage system has the characteristics of modular design, flexible configuration and distributed use, so that large-scale grid-connected application of the battery energy storage system becomes possible. Meanwhile, the battery energy storage system can be conveniently used as a controllable load, namely, the battery energy storage system has the characteristics of two roles of a power supply and a load, and the identity can be instantly converted according to the requirement. Therefore, the regulation of new energy wind-solar power generation is met, the phenomenon of wind and light abandoning in new energy power generation is reduced and even avoided, and the new energy power generation utilization rate is improved.
However, when the energy storage battery system is applied to large-scale use, we should also see a prominent problem of the energy storage battery system: and (4) safety problems. The safety problem of the battery energy storage system is that the traditional safety fire-fighting measures cannot effectively inhibit the thermal runaway of the lithium ion battery due to the outburst and the hazard of the fire of the energy storage battery system, so that the initial fire rapidly spreads, and further develops into a large-scale fire, and serious safety accidents and property loss are caused. The safety problem of the energy storage battery is divided into two aspects, namely: the method can accurately and timely detect the thermal runaway cell and prevent the thermal runaway cell from thermal diffusion. Only if the battery module and the system are accurately detected and put out in time at the same time, the battery module and the system can be prevented from suffering from safety problems.
Disclosure of Invention
The invention aims to provide an intelligent fire fighting system for a battery energy storage system and a working method thereof, and the intelligent fire fighting system is beneficial to improving the working safety of the battery energy storage system.
In order to achieve the purpose, the invention adopts the technical scheme that: an intelligent fire fighting system for a battery energy storage system comprises an energy storage battery unit, a fire fighting device, a fire fighting linkage control system and an audible and visual alarm device, wherein the energy storage battery unit comprises an electric box, a battery module, a battery management system, a fire sensing sensor, a fire branch pipe and an electromagnetic valve, the battery module, the battery management system, the fire sensing sensor, the fire branch pipe and the electromagnetic valve are arranged in the electric box, the battery module is composed of a plurality of electric cores, the fire branch pipe is arranged at the upper part in the electric box, and the electromagnetic valve is installed at the tail end of the fire branch pipe to control the on-off of the fire branch pipe; the fire fighting device comprises a fire fighting pipeline, a pressure pump, a fire fighting medium storage tank and an insulating liquid storage tank, wherein the fire fighting medium storage tank is connected to the fire fighting pipeline, the insulating liquid storage tank is connected to the fire fighting pipeline through the pressure pump, the fire fighting pipeline is connected with a fire fighting branch pipe in an electric box, and the fire fighting linkage control system is connected with the audible and visual alarm device so as to control the audible and visual alarm device to perform audible and visual alarm; the battery management system is respectively and electrically connected with the battery module, the fire sensing sensor and the electromagnetic valve, and is further in data communication with the fire-fighting linkage control system.
Further, the electric box is of a closed structure, and a pressure release valve is arranged on the electric box.
Furthermore, the fire branch pipe outwards passes through pipeline branch connector and is connected with the fire control pipeline, pipeline branch connector is inside to be provided with the check valve piece to forbid the insulating liquid backward flow, only allow the one-way access of insulating liquid, and then prevent that the inside insulating liquid of thermal runaway electronic box from flowing back to normal electronic box.
Further, the fire sensing sensor is a smoke sensor.
Furthermore, a liquid level sensor is arranged at the upper part in the electric box, and the installation position of the liquid level sensor is higher than that of the battery cell electrode, so that the whole battery cell can be immersed by insulating liquid, and the battery cell is ensured not to be re-combusted.
Furthermore, the solenoid valve regulates and controls the soft and slow output of the insulating liquid so as to avoid the false triggering of the liquid level induction sensor, which leads to the phenomenon that the liquid adding is finished in advance and the expected re-ignition prevention effect is not achieved.
Furthermore, intelligent fire extinguishing system includes a plurality of energy storage battery unit, and the battery management system of each energy storage battery unit all carries out data communication with fire control coordinated control system to through fire control coordinated control system centralized control fire control device work.
The invention also provides a working method of the intelligent fire fighting system for the battery energy storage system, which comprises the following steps:
if a certain electric core in the electric box is out of control due to heat, an explosion-proof valve at the top of the electric core is opened, a fire sensing sensor senses substances sprayed by the explosion-proof valve, and detection information is sent to a battery management system;
the battery management system simultaneously detects whether the voltage and the temperature of the single battery cell change suddenly and violently so as to determine whether the single battery cell is triggered by mistake or normally and determine whether the electromagnetic valve is opened or not;
after the electromagnetic valve is opened, the fire-fighting medium is sprayed out of the fire-fighting medium storage tank, and the electric core open fire is extinguished;
after the open fire of the battery core is extinguished, the battery management system sends information to the fire-fighting linkage control system, the booster pump is started, and the insulating liquid is sprayed into the electric box;
when the liquid level submergence electricity core of insulating liquid in the electronic box reached the level sensor position, level sensor sent detection information to battery management system, and battery management system self-closing solenoid valve to close the force (forcing) pump through fire control coordinated control system, stop to the electronic box in the liquid feeding, in order to prevent to influence other electronic boxes and entire system because the liquid feeding too much leads to airtight electronic box to burst.
Further, when the battery core is out of control due to heat, the battery management system transmits the state of the battery core out of control due to heat to the fire-fighting linkage control system, and the acousto-optic alarm device is used for carrying out acousto-optic alarm processing.
Further, after the fire-fighting medium is sprayed out of the fire-fighting medium storage tank for a set time, the open fire of the battery core is considered to be extinguished, and then the pressure pump is started; or a fire-fighting agent induction sensor is arranged at the top of the electric box, when the fire-fighting agent induction sensor induces the fire-fighting agent, the electric core open fire is considered to be extinguished, and then the booster pump is started.
Compared with the prior art, the invention has the following beneficial effects: this system can high-efficiently prevent the thermal runaway diffusion of battery electricity core, when the thermal runaway takes place for electric core, put out the electric core thermal runaway at the source, then leading-in insulating liquid submergence electric core again, prevent the phenomenon of reburning, ensure the safety of energy storage battery system. And single energy storage battery unit takes place thermal runaway, does not influence other electronic box and entire system to the security of furthest protection entire system.
Drawings
FIG. 1 is a schematic diagram of a system implementation of an embodiment of the invention.
Fig. 2 is a schematic structural diagram of an energy storage battery unit according to an embodiment of the invention.
Fig. 3 is a control schematic of an embodiment of the invention.
Detailed Description
The invention is further explained below with reference to the drawings and the embodiments.
It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
As shown in fig. 1 and 2, the embodiment provides an intelligent fire fighting system for a battery energy storage system, which includes an energy storage battery unit, a fire fighting device, a fire fighting linkage control system and an audible and visual alarm device, wherein the energy storage battery unit includes an electrical box, and a battery module, a battery management system, a fire sensing sensor, a fire branch pipe and an electromagnetic valve which are arranged in the electrical box, the battery module is composed of a plurality of battery cells, the fire branch pipe is arranged at the upper part in the electrical box, and the electromagnetic valve is installed at the tail end of the fire branch pipe to control the on-off of the fire branch pipe; the fire fighting device comprises a fire fighting pipeline, a pressure pump, a fire fighting medium storage tank and an insulating liquid storage tank, wherein the fire fighting medium storage tank is connected to the fire fighting pipeline, the insulating liquid storage tank is connected to the fire fighting pipeline through the pressure pump, the fire fighting pipeline is connected with a fire fighting branch pipe in an electric box, and the fire fighting linkage control system is connected with the audible and visual alarm device so as to control the audible and visual alarm device to perform audible and visual alarm; the battery management system is respectively and electrically connected with the battery module, the fire sensing sensor and the electromagnetic valve, and is further in data communication with the fire-fighting linkage control system.
In this embodiment, the electronic box is of a closed structure, and a pressure release valve is arranged at the upper part in the electronic box.
In this embodiment, the fire branch pipe outwards is connected with the fire control pipeline through pipeline branch connector, pipeline branch connector is inside to be provided with the check valve piece to forbid the insulating liquid backward flow, only allow the one-way access of insulating liquid, and then prevent that the inside insulating liquid of thermal runaway electronic box from flowing back to normal electronic box.
In this embodiment, the fire sensing sensor is a smoke sensor.
In this embodiment, a liquid level sensor is arranged at the upper part in the electrical box, and the installation position of the liquid level sensor is higher than that of the battery cell electrode, so that the whole battery cell can be immersed by insulating liquid, and the battery cell is ensured not to be re-combusted.
In this embodiment, the solenoid valve regulates and controls the soft output of insulating liquid, rather than the spraying formula to avoid the mistake to trigger liquid level sensing sensor, lead to ending the liquid feeding in advance and fail to reach the anticipated effect of preventing after combustion.
In a preferred embodiment of the present invention, the intelligent fire fighting system may include a plurality of energy storage battery units, and the battery management system of each energy storage battery unit is in data communication with the fire fighting coordinated control system, so as to centrally control the fire fighting device to operate through the fire fighting coordinated control system.
As shown in fig. 3, the present embodiment provides an operating method of the above intelligent fire fighting system for a battery energy storage system, including the following steps:
if a certain electric core in the electric box is out of control due to heat, the explosion-proof valve at the top of the electric core is opened, the fire sensing sensor senses substances sprayed by the explosion-proof valve, and the detection information is sent to the battery management system.
The battery management system simultaneously detects whether the voltage and the temperature of the single battery cell change suddenly and violently so as to determine whether the single battery cell is triggered by mistake or normally and determine whether the electromagnetic valve is opened or not; the redundant design avoids damage to a battery system caused by false triggering.
After the electromagnetic valve is opened, the fire-fighting medium storage tank sprays out the fire-fighting medium, and the electric core open fire is extinguished.
After the open fire of the battery core is extinguished, the battery management system sends information to the fire-fighting linkage control system, the booster pump is started, and the insulating liquid is sprayed into the electric box. In this embodiment, there may be a plurality of methods to determine whether the open fire of the battery cell is extinguished: after the fire-fighting medium is sprayed out of the fire-fighting medium storage tank for a set time, the open fire of the battery core is considered to be extinguished, and then the pressure pump is started; or a fire-fighting agent induction sensor is arranged at the top of the electric box, when the fire-fighting agent induction sensor induces the fire-fighting agent, the electric core open fire is considered to be extinguished, and then the booster pump is started.
When the liquid level submergence electricity core of insulating liquid in the electronic box reached the level sensor position, level sensor sent detection information to battery management system, and battery management system self-closing solenoid valve to close the force (forcing) pump through fire control coordinated control system, stop to the electronic box in the liquid feeding, in order to prevent to influence other electronic boxes and entire system because the liquid feeding too much leads to airtight electronic box to burst.
In addition, when electric core thermal runaway, battery management system still transmits electric core thermal runaway state to fire control coordinated control system, carries out acousto-optic warning through audible-visual alarm device and handles.
The foregoing is directed to preferred embodiments of the present invention, other and further embodiments of the invention may be devised without departing from the basic scope thereof, and the scope thereof is determined by the claims that follow. However, any simple modification, equivalent change and modification of the above embodiments according to the technical essence of the present invention are within the protection scope of the technical solution of the present invention.

Claims (10)

1. An intelligent fire fighting system for a battery energy storage system is characterized by comprising an energy storage battery unit, a fire fighting device, a fire fighting linkage control system and an audible and visual alarm device, wherein the energy storage battery unit comprises an electric box, and a battery module, a battery management system, a fire sensing sensor, a fire branch pipe and an electromagnetic valve which are arranged in the electric box; the fire fighting device comprises a fire fighting pipeline, a pressure pump, a fire fighting medium storage tank and an insulating liquid storage tank, wherein the fire fighting medium storage tank is connected to the fire fighting pipeline, the insulating liquid storage tank is connected to the fire fighting pipeline through the pressure pump, the fire fighting pipeline is connected with a fire fighting branch pipe in an electric box, and the fire fighting linkage control system is connected with the audible and visual alarm device so as to control the audible and visual alarm device to perform audible and visual alarm; the battery management system is respectively and electrically connected with the battery module, the fire sensing sensor and the electromagnetic valve, and is further in data communication with the fire-fighting linkage control system.
2. The intelligent fire fighting system for the battery energy storage system according to claim 1, wherein the electrical box is of a closed structure, and a pressure release valve is arranged on the electrical box.
3. The intelligent fire fighting system for the battery energy storage system as recited in claim 1, wherein the fire branch is connected to a fire pipeline via a pipeline branch connector, and a check valve plate is disposed inside the pipeline branch connector to prohibit the backflow of the insulation liquid and only allow the insulation liquid to be introduced in one direction, thereby preventing the insulation liquid inside the thermal runaway electrical box from flowing back to the normal electrical box.
4. An intelligent fire protection system for a battery energy storage system as claimed in claim 1, wherein the fire sensing sensor is a smoke sensor.
5. The intelligent fire fighting system for the battery energy storage system according to claim 1, wherein a liquid level sensor is arranged at the upper part in the electrical box, and the liquid level sensor is installed at a position higher than the cell electrode, so that the insulation liquid can submerge the whole cell, and the cell is ensured not to be re-ignited.
6. The intelligent fire fighting system for battery energy storage systems according to claim 5, wherein the solenoid valve regulates and controls the soft and slow output of the insulating liquid to avoid false triggering of the liquid level sensor, which leads to early completion of liquid filling and failure of the expected reignition prevention effect.
7. The intelligent fire fighting system according to claim 1, wherein the intelligent fire fighting system comprises a plurality of energy storage battery units, and the battery management system of each energy storage battery unit is in data communication with the fire protection coordinated control system so as to centrally control the fire protection device to operate through the fire protection coordinated control system.
8. An operating method of an intelligent fire fighting system for battery energy storage systems according to any of claims 1 to 7, characterized by comprising the following steps:
if a certain electric core in the electric box is out of control due to heat, an explosion-proof valve at the top of the electric core is opened, a fire sensing sensor senses substances sprayed by the explosion-proof valve, and detection information is sent to a battery management system;
the battery management system simultaneously detects whether the voltage and the temperature of the single battery cell change suddenly and violently so as to determine whether the single battery cell is triggered by mistake or normally and determine whether the electromagnetic valve is opened or not;
after the electromagnetic valve is opened, the fire-fighting medium is sprayed out of the fire-fighting medium storage tank, and the electric core open fire is extinguished;
after the open fire of the battery core is extinguished, the battery management system sends information to the fire-fighting linkage control system, the booster pump is started, and the insulating liquid is sprayed into the electric box;
when the liquid level submergence electricity core of insulating liquid in the electronic box reached the level sensor position, level sensor sent detection information to battery management system, and battery management system self-closing solenoid valve to close the force (forcing) pump through fire control coordinated control system, stop to the electronic box in the liquid feeding, in order to prevent to influence other electronic boxes and entire system because the liquid feeding too much leads to airtight electronic box to burst.
9. The working method of the intelligent fire fighting system for the battery energy storage system according to claim 8, wherein when the battery core is out of control due to heat, the battery management system transmits the state of the out of control due to heat of the battery core to the fire-fighting linkage control system, and the acousto-optic alarm device is used for carrying out acousto-optic alarm processing.
10. The working method of the intelligent fire fighting system for the battery energy storage system according to claim 8, wherein after the fire fighting medium is sprayed from the fire fighting medium storage tank for a set time, the electric core is considered to be extinguished, and then the pressure pump is started; or a fire-fighting agent induction sensor is arranged at the top of the electric box, when the fire-fighting agent induction sensor induces the fire-fighting agent, the electric core open fire is considered to be extinguished, and then the booster pump is started.
CN202111191718.XA 2021-10-13 2021-10-13 Intelligent fire fighting system for battery energy storage system and working method of intelligent fire fighting system Pending CN114010989A (en)

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CN117639184A (en) * 2024-01-25 2024-03-01 广州鑫虹兴电子有限公司 Intelligent battery management method and system

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GB201903488D0 (en) * 2019-03-14 2019-05-01 Intumescent Systems Ltd Covers for electrical appliances
CN109999386A (en) * 2019-03-22 2019-07-12 中国电力科学研究院有限公司 A kind of energy-storage battery cluster with fire-fighting structure
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WO2024007166A1 (en) * 2022-07-05 2024-01-11 宁德时代新能源科技股份有限公司 Energy storage system, and thermal management method and device for energy storage system
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Application publication date: 20220208