CN117691221A - Flame-retardant energy storage device and flame-retardant method thereof - Google Patents
Flame-retardant energy storage device and flame-retardant method thereof Download PDFInfo
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- CN117691221A CN117691221A CN202410145764.3A CN202410145764A CN117691221A CN 117691221 A CN117691221 A CN 117691221A CN 202410145764 A CN202410145764 A CN 202410145764A CN 117691221 A CN117691221 A CN 117691221A
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- 238000004146 energy storage Methods 0.000 title claims abstract description 36
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 title claims abstract description 26
- 239000003063 flame retardant Substances 0.000 title claims abstract description 26
- 238000000034 method Methods 0.000 title claims abstract description 13
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 118
- 229910052757 nitrogen Inorganic materials 0.000 claims description 59
- 239000007788 liquid Substances 0.000 claims description 53
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 47
- 239000001301 oxygen Substances 0.000 claims description 47
- 229910052760 oxygen Inorganic materials 0.000 claims description 47
- 238000012545 processing Methods 0.000 claims description 45
- 238000001816 cooling Methods 0.000 claims description 41
- 239000000110 cooling liquid Substances 0.000 claims description 30
- 239000007789 gas Substances 0.000 claims description 25
- 238000004880 explosion Methods 0.000 claims description 24
- 238000013022 venting Methods 0.000 claims description 22
- 238000004891 communication Methods 0.000 claims description 20
- 239000004677 Nylon Substances 0.000 claims description 3
- 229920001778 nylon Polymers 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 238000002485 combustion reaction Methods 0.000 description 9
- 238000004590 computer program Methods 0.000 description 6
- 238000009413 insulation Methods 0.000 description 6
- 239000002826 coolant Substances 0.000 description 4
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 3
- 229910052744 lithium Inorganic materials 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 230000032683 aging Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000011261 inert gas Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 230000014509 gene expression Effects 0.000 description 1
- 239000013307 optical fiber Substances 0.000 description 1
- 239000007774 positive electrode material Substances 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
Classifications
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- 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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Abstract
The invention relates to the technical field of energy storage devices, in particular to a flame-retardant energy storage device and a flame-retardant method thereof.
Description
Technical Field
The invention relates to the technical field of energy storage devices, in particular to a flame-retardant energy storage device and a flame-retardant method thereof.
Background
With the rapid development of renewable energy sources and the wide application of electric vehicles, lithium battery energy storage systems are mostly adopted in industrial and commercial energy storage devices at present, and the lithium battery energy storage systems have become one of the main forms of modern energy storage. In the charging and discharging process of the lithium battery, when the temperature of the battery exceeds 800 ℃ due to faults, the positive electrode material of the battery is decomposed to cause thermal runaway, a certain fire risk exists, serious loss can be caused once the fire occurs, and the fire of the energy storage device is easy to reburning and is more difficult to control than the common fire.
Although the traditional energy storage device adopts the control of the temperature of the battery core, the multistage electrical protection and the fire protection measures, and aims to reduce the fire risk of the energy storage system or reduce the adverse effect of accidents, the problem of the fire burning of the energy storage device is not solved from the root.
Disclosure of Invention
The invention provides a flame-retardant energy storage device which can help to radically eliminate fire hazards of the energy storage device and improve safety.
The specific technical scheme provided by the invention is as follows:
the device comprises: the device comprises a miniature nitrogen generator, a battery module, a wireless communication module, a central processing unit and a dry contact control valve;
the battery module comprises a shell and a battery cell in the shell, and an oxygen concentration sensor and a wireless communication module are arranged in the shell; the shell is provided with an air outlet interface and an air inlet interface, wherein the air outlet interface and the air inlet interface are arranged oppositely;
the miniature nitrogen generator is connected with the air inlet through a first gas pipeline so as to convey nitrogen generated by the miniature nitrogen generator into the shell of the battery module through the first gas pipeline and the air inlet;
the control valve is connected with the air outlet interface through an air pipeline so as to discharge oxygen in the battery module shell;
the oxygen concentration sensor is connected with the central processing unit through the wireless communication module so as to send the detected oxygen concentration in the battery module shell to the central processing unit;
the CPU is connected with the micro nitrogen making machine and the dry contact control valve, and when judging whether the received oxygen concentration is larger than a preset oxygen concentration threshold value, if so, the micro nitrogen making machine and the dry contact control valve are controlled to be opened simultaneously; if not, the micro nitrogen generator and the dry contact control valve are controlled to be closed at the same time.
Further, the device also comprises a pressure sensor arranged in the shell and an explosion venting valve arranged on the shell;
a pressure sensor for detecting a pressure within the housing;
the pressure sensor is connected with the central processing unit through the wireless communication module so as to send the detected pressure to the central processing unit;
the central processing unit is connected with the explosion venting valve to control the opening and closing of the explosion venting valve based on the pressure detected by the received pressure sensor.
Further, the device also comprises a liquid cooling unit and a liquid cooling plate arranged at the bottom of the battery cell in the shell;
the liquid cooling unit comprises a unit cooling liquid inlet and a unit cooling liquid outlet;
the liquid cooling plate comprises a liquid cooling plate cooling liquid inlet, a liquid cooling plate cooling liquid outlet, a first liquid pipeline and a second liquid pipeline which penetrate through the shell;
the unit cooling liquid outlet is connected with the liquid cooling plate cooling liquid inlet through a first liquid pipeline; the liquid cooling plate cooling liquid outlet is connected with the unit cooling liquid inlet through a second liquid pipeline to realize cooling liquid circulation, so that heat generated by the battery cell in the shell is taken away.
Further, a temperature sensor is arranged in the shell;
the temperature sensor is connected with the central processing unit through the wireless communication module so as to send the acquired temperature in the shell to the central processing unit;
the central processing unit is connected with the liquid cooling unit to control the flow rate of the liquid cooling unit based on the received temperature in the shell.
Further, the shell adopts a stainless steel shell with the protection grade of IP 67;
the air outlet interface and the air inlet interface adopt CQC14 type pipeline interfaces;
the first gas pipeline and the second gas pipeline adopt DN15 nylon pipelines;
the wireless communication module adopts an RS485 wireless communication module.
In another aspect, there is provided a flame retardant method applied to the above flame retardant energy storage device, comprising the steps of:
step one, an oxygen concentration sensor detects the oxygen concentration in a battery module shell and sends the detected oxygen concentration to a central processing unit;
step two, when judging whether the received oxygen concentration is greater than a preset oxygen concentration threshold value or not, the central processing unit controls the micro nitrogen generator and the dry contact control valve to be simultaneously opened, so that the micro nitrogen generator generates nitrogen, the generated nitrogen is input into the shell through the first gas pipeline, and oxygen in the shell is discharged through the second gas pipeline and the dry contact control valve;
if not, the micro nitrogen generator and the dry contact control valve are controlled to be closed at the same time.
Further, the steps further include:
the pressure sensor detects the pressure in the shell and sends the detected pressure to the central processing unit;
the central processing unit judges whether the received pressure is greater than a preset pressure threshold value, if so, the explosion venting valve is controlled to be opened so as to release the pressure;
if not, the explosion venting valve is controlled to be closed.
Further, the method further comprises:
the temperature sensor collects the temperature in the shell and sends the collected temperature in the shell to the central processing unit;
the central processing unit judges whether the received temperature in the shell is greater than a preset threshold value, if so, the flow rate of the liquid cooling unit is increased; if not, the flow rate of the liquid cooling unit is maintained.
The invention has the beneficial effects that:
(1) According to the invention, the oxygen concentration in the battery module shell is detected, when the oxygen concentration is higher than the preset threshold value, the micro nitrogen generator is controlled to be started to generate nitrogen, the nitrogen is removed, and the battery core in the battery module is covered by the nitrogen, so that the necessary condition of combustion supporting substances required by combustion is eliminated, the combustion ignition phenomenon is not caused even if the battery core is out of control, the fire hidden danger of the energy storage device is eliminated from the root, and the safety is improved.
(2) Nitrogen is an inert gas with better insulating properties than air. The battery core is covered by nitrogen, so that the insulation strength of the energy storage device is increased, the short circuit fault of the energy storage system caused by insulation aging is reduced, and the insulation performance and reliability of the energy storage device are improved.
(3) The pressure sensor is used for detecting the pressure in the battery module shell, and when the pressure exceeds the preset pressure threshold, the explosion venting valve is controlled to be opened to release the pressure, so that explosion can be effectively prevented, and the safety is further improved.
(4) The temperature sensor is used for detecting the temperature in the battery module shell, and when the detected temperature exceeds a preset temperature threshold value, the flow rate of the cooling liquid is increased, so that hidden danger caused by overhigh temperature of the battery core is avoided.
In addition, the invention has reliable design principle, simple structure and very wide application prospect.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic view showing a part of the structure of a flame retardant energy storage device according to an embodiment of the present invention.
Fig. 2 shows a schematic electrical schematic diagram of a flame retardant energy storage device according to an embodiment of the invention.
1-an oxygen concentration sensor; 2-a pressure sensor; 3-a wireless communication module; 4-a temperature sensor; 5-explosion venting valve; 6-a central processing unit; 7-a miniature nitrogen making machine; 8-a liquid cooling unit; 9-dry junction control valve; 10-battery module; 11-a housing; 12-an electric core; 13-a liquid cooling plate; 14-an air inlet interface; 15-an air outlet interface; 17-a first gas line; 18-a second gas line; 19-a unit cooling liquid outlet; 20-unit cooling liquid inlet.
Detailed Description
In order to make the technical solution of the present invention better understood by those skilled in the art, the technical solution 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 only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present invention without making any inventive effort, shall fall within the scope of the present invention.
Before further describing embodiments of the present application in detail, the terms and expressions that are referred to in the embodiments of the present application are described, and are suitable for the following explanation.
Example 1:
as shown in fig. 1 and 2, the flame retardant energy storage device provided in this embodiment includes: the micro nitrogen generator 7, the battery module 10, the wireless communication module 3, the central processing unit 6, the liquid cooling unit 8 and the dry contact control valve 9.
The battery module includes a housing 11 and a battery cell 12 inside the housing; wherein, the shell 11 is made of stainless steel with the protection grade of IP 67.
The inside of the shell 11 is also provided with an oxygen concentration sensor 1, a wireless communication module 3, a pressure sensor 2, a temperature sensor 4 and a liquid cooling plate 13, wherein the liquid cooling plate 13 is arranged at the bottom of a battery cell 12 in the shell 11; the shell 11 is provided with an air outlet port 15, an air inlet port 14 and an explosion venting valve 5, wherein the air outlet port 15 and the air inlet port 14 are arranged oppositely. If the air outlet port 15 is on the front of the housing 11, for example, the air inlet port 14 is on the rear of the housing 11 and in line with the air outlet port 15. The air outlet interface 15 and the air inlet interface 14 can adopt CQC14 type pipeline interfaces.
The micro nitrogen generator 7 is connected with the gas inlet port 14 through a first gas pipeline 17 so as to convey nitrogen generated by the micro nitrogen generator 7 into the shell 11 of the battery module 10 through the first gas pipeline 17 and the gas inlet port 14.
The dry contact control valve 9 is connected to the outlet port 15 via a second gas line 18 to vent oxygen from the housing of the battery module 10. The first gas line 17 and the second gas line 18 may be, for example, DN15 nylon lines.
The liquid cooling unit 8 includes a unit coolant inlet 20 and a unit coolant outlet 19.
The liquid cooling plate 13 includes a liquid cooling plate coolant inlet, a liquid cooling plate coolant outlet, and a first liquid line and a second liquid line passing through the housing 11.
The unit cooling liquid outlet 19 is connected with the cooling liquid inlet of the liquid cooling plate through a first liquid pipeline; the liquid cooling plate cooling liquid outlet is connected with the unit cooling liquid inlet 20 through a second liquid pipeline to realize cooling liquid circulation, so that heat generated by the battery cell in the shell is taken away.
The oxygen concentration sensor 1, the temperature sensor 4 and the pressure sensor 2 are all connected with the central processing unit 6 through the wireless communication module 3 to send the detected oxygen concentration, temperature and pressure in the shell of the battery module 10 to the central processing unit 6, wherein the wireless communication module 3 can adopt an RS485 wireless communication module.
The central processing unit 6 is connected with the micro nitrogen generator 7, the explosion venting valve 5, the liquid cooling unit 8 and the dry contact control valve 9, and the central processing unit 6 is configured to perform the following operations:
(1) It is determined whether the received oxygen concentration in the housing of the battery module 10 is greater than a preset oxygen concentration threshold (e.g., 1%).
If so, the micro nitrogen generator 7 and the dry contact control valve 9 are controlled to be opened simultaneously, so that the micro nitrogen generator generates nitrogen, and the generated nitrogen is input into the shell through the first gas pipeline to expel oxygen in the shell, and the oxygen in the shell is discharged through the second gas pipeline and the dry contact control valve.
If not, the micro nitrogen generator 7 and the dry contact control valve 9 are controlled to be closed simultaneously or the micro nitrogen generator 7 and the dry contact control valve 9 are controlled to be kept closed simultaneously.
(2) Judging whether the received pressure is greater than a preset pressure threshold, if so, controlling the explosion venting valve 5 to be opened so as to release the pressure in the shell; if not, the explosion venting valve 5 is controlled to be closed or the explosion venting valve 5 is controlled to be kept in a closed state.
(3) Judging whether the received temperature in the shell is greater than a preset threshold value, if so, increasing the flow rate of the liquid cooling unit 8, namely increasing the circulation speed of the cooling liquid, so that the carrying-out of heat generated in the battery module shell is enhanced.
If not, the flow rate of the liquid cooling unit 8 is maintained.
According to the invention, the oxygen concentration in the battery module shell is detected, when the oxygen concentration is higher than the preset threshold value, the micro nitrogen generator is controlled to be started to generate nitrogen, the nitrogen is removed, and the battery core in the battery module is covered by the nitrogen, so that the necessary condition of combustion supporting substances required by combustion is eliminated, the combustion ignition phenomenon is not caused even if the battery core is out of control, the fire hidden danger of the energy storage device is eliminated from the root, and the safety is improved.
And nitrogen is an inert gas, and compared with air, the nitrogen has better insulating property. The battery core is covered by nitrogen, so that the insulation strength of the energy storage device is increased, the short circuit fault of the energy storage system caused by insulation aging is reduced, and the insulation performance and reliability of the energy storage device are improved.
The pressure sensor is used for detecting the pressure in the battery module shell, and when the pressure exceeds the preset pressure threshold, the explosion venting valve is controlled to be opened to release the pressure, so that explosion can be effectively prevented, and the safety is further improved.
The temperature sensor is used for detecting the temperature in the battery module shell, and when the detected temperature exceeds a preset temperature threshold value, the flow rate of the cooling liquid is increased, so that hidden danger caused by overhigh temperature of the battery core is avoided.
Example 2:
the embodiment provides a flame retardant method, which comprises the following steps:
s1, an oxygen concentration sensor detects the oxygen concentration in the battery module shell and sends the detected oxygen concentration to a central processing unit.
S2, the CPU controls the micro nitrogen generator and the dry contact control valve to be opened and closed based on the received oxygen concentration.
Specifically, when the central processing unit judges whether the received oxygen concentration is greater than a preset oxygen concentration threshold (for example, the preset oxygen concentration threshold is 1%), if so, the micro nitrogen making machine and the dry contact control valve are controlled to be simultaneously opened, so that the micro nitrogen making machine generates nitrogen, the generated nitrogen is input into the shell through the first gas pipeline, and oxygen in the shell is discharged through the second gas pipeline and the dry contact control valve. If not, the micro nitrogen generator and the dry contact control valve are controlled to be closed at the same time.
And S3, detecting the temperature in the battery module shell by the temperature sensor, and sending the detected temperature to the central processing unit.
And S4, the central processing unit controls the flow rate of the cooling liquid output by the liquid cooling unit based on the received temperature.
Specifically, the central controller judges whether the received temperature in the shell is greater than a preset threshold value, if so, the flow rate of the liquid cooling unit is increased, namely the circulation speed of cooling liquid is increased, so that the carrying-out of heat generated in the battery module shell is enhanced; if not, the flow rate of the liquid cooling unit is maintained.
And S5, the pressure sensor detects the pressure in the battery module shell and sends the detected pressure to the central processing unit.
And S6, the central processing unit controls the opening and closing of the explosion venting valve based on the received pressure.
Specifically, the central processing unit judges whether the received pressure is greater than a preset pressure threshold, if yes, the explosion venting valve is controlled to be opened so as to release the pressure in the shell; if not, the explosion venting valve is controlled to be closed or the explosion venting valve is controlled to be kept in a closed state.
According to the invention, the oxygen concentration in the battery module shell is detected, when the oxygen concentration is higher than the preset threshold value, the micro nitrogen generator is controlled to be started to generate nitrogen, the nitrogen is removed, and the battery core in the battery module is covered by the nitrogen, so that the necessary condition of combustion supporting substances required by combustion is eliminated, the combustion ignition phenomenon is not caused even if the battery core is out of control, the fire hidden danger of the energy storage device is eliminated from the root, and the safety is improved.
Example 3:
the present embodiment provides a computer-readable storage medium storing a computer program, in which a program related to the flame retardant method related to embodiment 2 is stored for execution by a central processing unit.
The computer program used in the practice of the methods of the present embodiments may be written in any combination of one or more programming languages. These computer programs may be provided to a central processor of a general purpose computer, special purpose computer, or other programmable data processing apparatus, such that the computer programs, when executed by the central processor, cause the functions/operations specified in the block diagrams to be implemented. The computer program may execute entirely on the machine, partly on the machine, as a stand-alone software package, partly on the machine and partly on a remote machine or entirely on the remote machine or server.
In the context of the present invention, a computer-readable storage medium may be a tangible medium that can contain, or store a computer program for use by or in connection with an instruction execution system, apparatus, or device. The computer readable storage medium may include, but is not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any suitable combination of the foregoing. Alternatively, the computer readable storage medium may be a machine readable signal medium. More specific examples of a machine-readable storage medium would include an electrical connection based on one or more wires, a portable computer diskette, a hard disk, a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.
Although the present invention has been described in detail by way of preferred embodiments with reference to the accompanying drawings, the present invention is not limited thereto. Various equivalent modifications and substitutions may be made in the embodiments of the present invention by those skilled in the art without departing from the spirit and scope of the present invention, and it is intended that all such modifications and substitutions be within the scope of the present invention/be within the scope of the present invention as defined by the appended claims. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (9)
1. A flame retardant energy storage device, comprising: the device comprises a miniature nitrogen generator, a battery module, a wireless communication module, a central processing unit and a dry contact control valve;
the battery module comprises a shell and a battery cell in the shell, and an oxygen concentration sensor and a wireless communication module are arranged in the shell; the shell is provided with an air outlet interface and an air inlet interface, wherein the air outlet interface and the air inlet interface are arranged oppositely;
the miniature nitrogen generator is connected with the air inlet through a first gas pipeline so as to convey nitrogen generated by the miniature nitrogen generator into the shell of the battery module through the first gas pipeline and the air inlet;
the dry node control valve is connected with the air outlet interface through a second air pipeline so as to discharge oxygen in the battery module shell;
the oxygen concentration sensor is connected with the central processing unit through the wireless communication module so as to send the detected oxygen concentration in the battery module shell to the central processing unit;
the CPU is connected with the micro nitrogen making machine and the dry contact control valve, and when judging whether the received oxygen concentration is larger than a preset oxygen concentration threshold value, if so, the micro nitrogen making machine and the dry contact control valve are controlled to be opened simultaneously; if not, the micro nitrogen generator and the dry contact control valve are controlled to be closed at the same time.
2. The flame retardant energy storage device of claim 1, further comprising a pressure sensor disposed within the housing and a explosion venting valve mounted on the housing;
a pressure sensor for detecting a pressure within the housing;
the pressure sensor is connected with the central processing unit through the wireless communication module so as to send the detected pressure to the central processing unit;
the central processing unit is connected with the explosion venting valve to control the opening and closing of the explosion venting valve based on the pressure detected by the received pressure sensor.
3. The flame retardant energy storage device of claim 1, further comprising a liquid cooling unit and a liquid cooling plate disposed at the bottom of the cell in the housing;
the liquid cooling unit comprises a unit cooling liquid inlet and a unit cooling liquid outlet;
the liquid cooling plate comprises a liquid cooling plate cooling liquid inlet, a liquid cooling plate cooling liquid outlet, a first liquid pipeline and a second liquid pipeline which penetrate through the shell;
the unit cooling liquid outlet is connected with the liquid cooling plate cooling liquid inlet through a first liquid pipeline; the liquid cooling plate cooling liquid outlet is connected with the unit cooling liquid inlet through a second liquid pipeline, so that cooling liquid circulation is realized, and heat generated by the battery cell in the shell is taken away.
4. A flame retardant energy storage device as defined in claim 3, wherein a temperature sensor is further provided in said housing;
the temperature sensor is connected with the central processing unit through the wireless communication module so as to send the acquired temperature in the shell to the central processing unit;
the central processing unit is connected with the liquid cooling unit to control the flow rate of the liquid cooling unit based on the received temperature in the shell.
5. The flame retardant energy storage device of claim 1, wherein said housing is a stainless steel housing having a protection rating of IP 67.
6. The flame retardant energy storage device of claim 1, wherein said air outlet and air inlet interfaces employ CQC14 type pipeline interfaces;
the first gas pipeline and the second gas pipeline adopt DN15 nylon pipelines;
the wireless communication module adopts an RS485 wireless communication module.
7. A flame retardant method applied to the flame retardant energy storage device of any one of claims 1 to 6, comprising the steps of:
step one, an oxygen concentration sensor detects the oxygen concentration in a battery module shell and sends the detected oxygen concentration to a central processing unit;
step two, when judging whether the received oxygen concentration is greater than a preset oxygen concentration threshold value or not, the central processing unit controls the micro nitrogen generator and the dry contact control valve to be simultaneously opened, so that the micro nitrogen generator generates nitrogen, the generated nitrogen is input into the shell through the first gas pipeline, and oxygen in the shell is discharged through the second gas pipeline and the dry contact control valve;
if not, the micro nitrogen generator and the dry contact control valve are controlled to be closed at the same time.
8. The flame retardant method of claim 7, wherein said steps further comprise:
the pressure sensor detects the pressure in the shell and sends the detected pressure to the central processing unit;
the central processing unit judges whether the received pressure is greater than a preset pressure threshold value, if so, the explosion venting valve is controlled to be opened so as to release the pressure;
if not, the explosion venting valve is controlled to be closed.
9. The flame retardant method of claim 7, further comprising:
the temperature sensor collects the temperature in the shell and sends the collected temperature in the shell to the central processing unit;
the central processing unit judges whether the received temperature in the shell is greater than a preset threshold value, if so, the flow rate of the liquid cooling unit is increased; if not, the flow rate of the liquid cooling unit is maintained.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202410145764.3A CN117691221A (en) | 2024-02-02 | 2024-02-02 | Flame-retardant energy storage device and flame-retardant method thereof |
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| CN202410145764.3A CN117691221A (en) | 2024-02-02 | 2024-02-02 | Flame-retardant energy storage device and flame-retardant method thereof |
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