Equipment for energy storage and fire protection of lithium iron phosphate battery

Abstract

The utility model discloses equipment for energy storage and fire fighting of a lithium iron phosphate battery, which comprises an inner container, a spiral cooling pipe, a digital display liquid level meter, a refrigerant inlet, a refrigerant outlet and an overflow vent nozzle, the inner container is fixedly connected with a connecting table, and the connecting table is fixedly connected with a first pipeline; according to the utility model, in a non-fire state, when the pressure exceeds the limit, the refrigerating machine starts to work and feeds the refrigerant into the spiral cooling pipe to cool the carbon dioxide liquid, and when the pressure returns to the limit, the refrigerating machine stops working and the refrigerant flows back to the refrigerating machine, so that a refrigerating cycle is completed, and the aim of permanently storing the fire extinguishing agent liquid is fulfilled; fire extinguishing equipment can effectively extinguish fire at any time; when a fire occurs, the refrigerator does not work, a smoke sensing signal is sent out, a valve on a liquid inlet and outlet is opened, carbon dioxide liquid enters a fire point for automatic fire extinguishing, automatic fire extinguishing is achieved, life safety of fire fighters is guaranteed, and potential safety hazards are eliminated. The whole system is low in energy consumption, and cost saving is facilitated.

Description

TECHNICAL FIELD

[0001] The utility model relates to low temperature energy storage manufacturing industry technical field, especially relate to the equipment for lithium iron phosphate battery energy storage fire fighting. BACKGROUND

[0002] Lithium iron phosphate battery is widely used in energy storage system because of its high safety, long cycle life and good thermal stability, but the selection and configuration of its fire fighting equipment is very important, fire fighting equipment can minimize the economic loss caused by fire, including the damage of battery pack itself and related facilities, by preventing excessive heat and fire, it helps to maintain the good state of battery pack, thereby prolonging its service life, by ensuring the safe operation of energy storage system, it indirectly supports the application of renewable energy, and helps to reduce greenhouse gas emissions, but the existing equipment for lithium iron phosphate battery energy storage fire fighting on the market has obvious defects: first, most of the equipment for lithium iron phosphate battery energy storage fire fighting cannot permanently store fire extinguishing agent liquid, so that the fire extinguishing equipment cannot effectively extinguish fire, second, most of the equipment for lithium iron phosphate battery energy storage fire fighting has high energy consumption, high cost and cannot automatically extinguish fire, which has safety hazards, therefore, it is necessary to design an equipment for lithium iron phosphate battery energy storage fire fighting. SUMMARY

[0003] The utility model discloses a kind of equipment for lithium iron phosphate battery energy storage fire fighting, to solve the defect that the existing equipment for lithium iron phosphate battery energy storage fire fighting cannot permanently store fire extinguishing agent liquid, so that the fire extinguishing equipment cannot effectively extinguish fire and has high energy consumption, high cost, and cannot automatically extinguish fire, which has safety hazards.

[0004] In order to solve the above technical problems, the utility model provides the following technical scheme: the equipment for lithium iron phosphate battery energy storage fire fighting, including content container, spiral cooling pipe, digital liquid level meter, pressure sensor, high-pressure gas container, refrigerant inlet, refrigerant outlet and overflow vent, the content container is fixedly connected with connecting table, the connecting table is fixedly connected with first pipeline, the first pipeline is fixedly connected with spiral cooling pipe, the spiral cooling pipe is fixedly connected with second pipeline, and the second pipeline is fixedly connected with connecting table;The first pipeline is fixedly connected with refrigerant inlet, the refrigerant inlet is fixedly connected with fourth pipeline, the fourth pipeline is fixedly connected with refrigerating machine, the refrigerating machine is fixedly connected with fifth pipeline, the fifth pipeline is fixedly connected with refrigerant outlet, and the refrigerant outlet is fixedly connected with second pipeline.

[0005] As a further technical scheme of the utility model, the connecting table is fixedly connected with digital liquid level meter and pressure sensor, and the pipelines of the digital liquid level meter and the pressure sensor are all in the interior of the content container.

[0006] As a further technical scheme of the utility model, the connecting table is fixedly connected with a three-way valve, an overflow vent, an inlet and outlet port and an air inlet.

[0007] As a further technical scheme of the utility model, the outer wall of the content container is tightly attached to a heat insulating body.

[0008] As a further technical scheme of the utility model, the bottom of the content container is fixedly connected with a fixing base, the fixing base is fixedly connected with a connecting column, the connecting column is fixedly connected to a fixing bottom plate, the fixing bottom plate is fixedly connected to the inner wall of the outer container, and the outer container is fixedly connected to the connecting table.

[0009] As a further technical scheme of the utility model, the air inlet is fixedly connected with a third pipeline, the third pipeline is fixedly connected to a high-pressure gas container, and an electromagnetic valve is arranged on the third pipeline.

[0010] As a further technical scheme of the utility model, the outer container is fixedly connected with a circular transverse plate, the circular transverse plate is fixedly connected with the content container, the bottom of the outer container is fixedly connected with a base, and the top side of the outer container is provided with an evacuation port.

[0011] The equipment for lithium iron phosphate battery energy storage fire fighting has the advantages that: the air in the content container and the outer container is evacuated through the evacuation port, the pressure of the content container is measured by a pressure sensor, and when the pressure measured by the pressure sensor is greater than 2.4 MPa, the refrigerator starts to work, the refrigerant enters the refrigerant inlet from the fourth pipeline, enters the spiral cooling pipe to cool the carbon dioxide liquid through the first pipeline, and when the pressure is less than 2.4 MPa, the refrigerator stops working, the refrigerant flows to the fifth pipeline from the second pipeline through the refrigerant outlet, and finally flows back to the refrigerator, so that a refrigeration cycle is completed, the purpose of permanently storing the fire extinguishing agent liquid is achieved, and the fire extinguishing equipment can extinguish the fire at any time; when a fire breaks out, the refrigerator does not work, a smoke sensing signal is sent out, the valve on the inlet and outlet port is opened, the carbon dioxide liquid flows out of the inlet and outlet port and enters the fire point to automatically extinguish the fire, automatic fire extinguishing is realized, the life safety of the fire fighting personnel is ensured, and the safety hidden danger is eliminated; when the pressure is less than 2.0 MPa, the electromagnetic valve is opened, the high-pressure gas container inputs high-pressure gas into the content container through the third pipeline to balance the pressure, when the pressure is greater than 2.4 MPa, the electromagnetic valve is closed, and when the display value of the digital liquid level meter is less than 5%, automatic alarm is realized; the whole system has small energy consumption, and is beneficial to saving cost. BRIEF DESCRIPTION OF DRAWINGS

[0012] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0013] Figure 1 This is an overall structural diagram of the present invention;

[0014] Figure 2 This is a cross-sectional view of the inner container of this utility model;

[0015] Figure 3 This is an overall sectional view of the outer container of this utility model;

[0016] Figure 4 This is a top view of the contents of this utility model.

[0017] In the diagram: 1. Inner container; 2. First pipe; 3. Second pipe; 4. Spiral cooling pipe; 5. Digital level gauge; 6. Pressure sensor; 7. High-pressure gas container; 8. Solenoid valve; 9. Third pipe; 10. Refrigeration unit; 11. Fourth pipe; 12. Fifth pipe; 13. Outer container; 14. Base; 15. Insulation blanket; 16. Evacuation port; 17. Fixing seat; 18. Connecting column; 19. Fixing base plate; 20. Refrigerant inlet; 21. Liquid inlet / outlet; 22. Refrigerant outlet; 23. Overflow vent; 24. Air inlet; 25. Three-way valve; 26. Connecting platform; 27. Horizontal plate. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0019] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0020] Please refer to the attached Figure 1 -attached Figure 4 , the utility model provides an embodiment: for lithium iron phosphate battery energy storage fire -fighting equipment for equipment, including content container 1, spiral cooling pipe 4, digital liquid level meter 5, pressure sensor 6, high pressure gas container 7, refrigerant import 20, refrigerant export 22 and overflow vent, content container 1 is fixedly connected connection table 26, connection table 26 is fixedly connected first pipeline 2, and first pipeline 2 is fixedly connected on spiral cooling pipe 4, and spiral cooling pipe 4 is fixedly connected with second pipeline 3, and second pipeline 3 is fixedly connected on connection table 26;First pipeline 2 is fixedly connected refrigerant import 20, and refrigerant import 20 is fixedly connected fourth pipeline 11, and fourth pipeline 11 is fixedly connected refrigerating machine 10, and refrigerating machine 10 is fixedly connected fifth pipeline 12, and fifth pipeline 12 is fixedly connected refrigerant export 22, and refrigerant export 22 is fixedly connected on second pipeline 3;Connection table 26 is fixedly connected digital liquid level meter 5 and pressure sensor 6, and the pipeline of digital liquid level meter 5 and pressure sensor 6 is in the inside of content container 1, and digital liquid level meter 5 shows the content of carbon dioxide liquid in content container 1, and pressure sensor 6 is used to determine the internal pressure of content container 1;Connection table 26 is fixedly connected with three-way valve 25, overflow vent 23, inlet and outlet liquid port 21 and gas inlet 24, and overflow vent 23 is used to discharge redundant substances;The outer wall of content container 1 is closely attached to heat insulating body 15, and heat insulating body 15 is used to keep the low temperature of content container 1, and carbon dioxide liquid is conveniently saved;Content container 1 bottom is fixedly connected fixed seat 17, and fixed seat 17 is fixedly connected connecting column 18, and connecting column 18 is fixedly connected on fixed base plate 19, and fixed base plate 19 is fixedly connected on the inner wall of outer container 13, and outer container 13 is fixedly connected on connection table 26;Gas inlet 24 is fixedly connected third pipeline 9, and third pipeline 9 is fixedly connected on high pressure gas container 7, and electromagnetic valve 8 is arranged on third pipeline 9;Outer container 13 is fixedly connected with circular transverse plate 27, and circular transverse plate 27 is fixedly connected with content container 1, and outer container 13 bottom is fixedly connected base 14, and the top side of outer container 13 is provided with evacuation port 16, and circular transverse plate 27 is used to fix content container 1, and base 14 is used to balance the support of outer container 13.

[0021] Specifically, in use, first, the air in the inner container 1 and the outer container 13 is pumped away through the pumping port 16, the pressure of the inner container 1 is measured by the pressure sensor 6, in the non-fire state, when the pressure measured by the pressure sensor 6 is greater than 2.4 MPa, the refrigerator 10 starts to work, the refrigerant is pumped from the fourth pipeline 11 into the refrigerant inlet 20, enters the spiral cooling pipe 4 to cool the carbon dioxide liquid via the first pipeline 2, when the pressure is less than 2.4 MPa, the refrigerator 10 stops working, the refrigerant is pumped from the second pipeline 3 to the fifth pipeline 12 via the refrigerant outlet 22, and finally flows back to the refrigerator 10, completing a refrigeration cycle, achieving the purpose of permanently storing the fire extinguishing agent liquid, and the fire extinguishing equipment can extinguish fire at any time; in the fire state, the refrigerator 10 does not work, the smoke sensing signal is sent out, the valve on the liquid inlet and outlet port 21 is opened, the carbon dioxide liquid flows out from the liquid inlet and outlet port 21 and enters the fire point to automatically extinguish the fire, realizing automatic fire extinguishing, protecting the life safety of the fire-fighting personnel, and eliminating the safety hazard; when the pressure is less than 2.0 MPa, the electromagnetic valve 8 is opened, the high-pressure gas container 7 inputs the high-pressure gas into the inner container 1 via the third pipeline 9 to balance the pressure, when the pressure is greater than 2.4 MPa, the electromagnetic valve 8 is closed, and when the digital liquid level meter 5 displays a value less than 5%, an automatic alarm is sent out; the whole system has low energy consumption, which is beneficial to saving cost.

[0022] In the description of the utility model, it is to be explained that, unless there is definite stipulation and limitation, the term "installation", "link", "connection" should be broad sense understanding, for example, can be fixed connection, also can be detachable connection, or integrally connected, can be mechanical connection, also can be electrical connection, can be direct connection, also can pass through intermediate medium indirectly connect, can be two element inside the intercommunication. For ordinary skilled person in the art, the specific meaning of the above-mentioned term in the utility model can be understood according to the specific circumstances.

[0023] The device embodiments described above are only schematic, wherein the units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, i.e., may be located in one place, or may be distributed on a plurality of network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the present embodiment. Those skilled in the art can understand and implement without creative labor.

[0024] It should be finally pointed out that: the above examples are only used to illustrate the technical solutions of the utility model, and not to limit them; although the utility model has been explained in detail with reference to the foregoing examples, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing examples, or make equivalent replacement to part of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the utility model.

Claims

1. A device for lithium iron phosphate battery energy storage for fire fighting, comprising a content container (1), a spiral cooling pipe (4), a digital liquid level meter (5), a pressure sensor (6), a high-pressure gas container (7), a refrigerant inlet (20), a refrigerant outlet (22) and an overflow vent (23), characterized in that: The inner container (1) is fixedly connected with a connecting table (26), the connecting table (26) is fixedly connected with a first pipeline (2), the first pipeline (2) is fixedly connected with a spiral cooling pipeline (4), the spiral cooling pipeline (4) is fixedly connected with a second pipeline (3), the second pipeline (3) is fixedly connected with the connecting table (26); the first pipeline (2) is fixedly connected with a refrigerant inlet (20), the refrigerant inlet (20) is fixedly connected with a fourth pipeline (11), the fourth pipeline (11) is fixedly connected with a refrigerating machine (10), the refrigerating machine (10) is fixedly connected with a fifth pipeline (12), the fifth pipeline (12) is fixedly connected with a refrigerant outlet (22), and the refrigerant outlet (22) is fixedly connected with the second pipeline (3).

2. The device for lithium iron phosphate battery energy storage for fire fighting according to claim 1, characterized in that: The connecting table (26) is fixedly connected with a digital liquid level meter (5) and a pressure sensor (6), and pipelines of the digital liquid level meter (5) and the pressure sensor (6) are arranged in the inner container (1).

3. The device for lithium iron phosphate battery energy storage for fire fighting according to claim 2, characterized in that: The connecting table (26) is fixedly connected with a three-way valve (25), an overflow vent (23), an inlet and outlet liquid port (21) and an air inlet (24).

4. The device for lithium iron phosphate battery energy storage for fire fighting according to claim 2, characterized in that: The outer wall of the inner container (1) is tightly connected with a heat insulation cover (15).

5. The device for lithium iron phosphate battery energy storage for fire fighting according to claim 4, characterized in that: The bottom of the inner container (1) is fixedly connected with a fixed seat (17), the fixed seat (17) is fixedly connected with a connecting column (18), the connecting column (18) is fixedly connected with a fixed bottom plate (19), the fixed bottom plate (19) is fixedly connected with the inner wall of an outer container (13), and the outer container (13) is fixedly connected with the connecting table (26).

6. The device for lithium iron phosphate battery energy storage for fire fighting according to claim 3, characterized in that: The air inlet (24) is fixedly connected with a third pipeline (9), the third pipeline (9) is fixedly connected with a high-pressure gas container (7), and the third pipeline (9) is provided with an electromagnetic valve (8).

7. The device for lithium iron phosphate battery energy storage for fire fighting according to claim 5, characterized in that: The outer container (13) is fixedly connected with a circular transverse plate (27), the circular transverse plate (27) is fixedly connected with the inner container (1), the bottom of the outer container (13) is fixedly connected with a base (14), and one side of the top of the outer container (13) is provided with a vacuumizing port (16).

Images