Liquid cooling pipeline with fire-fighting function
By integrating fire detectors and foaming containers into liquid-cooled pipes, and using the reaction of coolant to generate fire-extinguishing foam, the problem of separate design of traditional liquid-cooled pipes and fire protection systems is solved, achieving the effects of space saving, cost reduction and improved manufacturing efficiency.
Patent Information
- Application Number
- CN202422831271.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-20
- Publication Date
- 2025-10-21
- Estimated Expiration
- 2034-11-20
AI Technical Summary
The traditional design of liquid cooling pipelines and fire protection systems separately leads to wasted space, complex pipeline connections, high manufacturing costs, low efficiency, and the risk of disconnection.
The design incorporates a liquid-cooled pipeline with fire-fighting capabilities. By installing fire detectors, solenoid valves, one-way check valves, and foaming containers within the liquid-cooled pipeline, fire-extinguishing foam is generated through the reaction of the coolant with an aluminum sulfate aqueous solution, thus achieving the fire-extinguishing function.
It integrates liquid cooling and fire suppression functions, saving space and cost, simplifying manufacturing processes, improving production efficiency, reducing the risk of disconnection, and enabling rapid fire suppression.
Smart Images
Figure CN223462305U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to battery heat management technical field especially a liquid cooling pipeline with fire fighting function. BACKGROUND
[0002] The liquid cooling pipeline is part of a new energy battery heat management system and plays an important role in preventing and controlling fires. Through the circulation of the cooling liquid in the liquid cooling pipeline, the heat generated by the battery pack can be quickly removed, effectively reducing the battery temperature, so that the battery pack can continuously operate within an optimal temperature range, thereby prolonging the service life of the battery and improving the overall performance of the energy storage system. In the traditional technology, the liquid cooling pipeline itself does not have a fire extinguishing function. It can only reduce the risk of thermal runaway, thereby reducing the possibility of fire, or in the early stage of fire, the cooling liquid in the liquid cooling pipeline can absorb part of the heat, reducing the temperature of the fire source, and gaining valuable time for subsequent fire extinguishing work. The fire extinguishing function is mainly realized by a fire fighting system designed independently of the liquid cooling pipeline. The fire fighting system mainly includes a fire detection and alarm system, a fire extinguishing system, a smoke exhaust system, an emergency response and plan, etc. The fire detection and alarm system analyzes the collected data. Once a fire signal is detected, an alarm is immediately sent out, and the fire extinguishing system is started. The fire extinguishing system includes at least one of a gas fire extinguishing system, a water spray fire extinguishing system and a PACK level fire extinguishing system, and simultaneously starts the smoke exhaust system to exhaust smoke and harmful gases.
[0003] As Figure 3 and Figure 4 Commonly shown: the fire fighting system is designed at the top of the entire system and is connected with each battery pack. A fire detection device and a fire extinguishing agent spraying device are arranged in each battery pack. When the fire detection device detects a fire in the battery pack, the fire extinguishing agent spraying device is opened to spray fire extinguishing agent for fire extinguishing. The liquid cooling host is arranged at the bottom of the entire system and is connected with the liquid cooling pipeline of each battery pack. Cooling liquid such as water-glycol mixed liquid with a volume ratio of 1:1 is pumped to the liquid cooling pipeline to maintain the battery pack within an appropriate working temperature range. The separate design of the cooling system and the fire fighting system causes serious waste of new energy battery space and numerous pipeline connections, which is not conducive to the improvement of battery energy density and may lead to frequent abnormal situations such as disconnection of the pipeline due to bumping, and the manufacturing process is complicated, the manufacturing cost is high, and the manufacturing efficiency is low.
[0004] Therefore, the utility model is proposed. Utility model content
[0005] In view of the above-mentioned shortcomings of the prior art, the utility model provides a liquid cooling pipeline with fire fighting function.
[0006] The utility model provides a liquid cooling pipeline with fire function, comprising a liquid cooling main pipeline, a fire detector, an electromagnetic valve, a one-way check valve, a foaming container and a liquid cooling branch pipeline, one end of the liquid cooling branch pipeline is perpendicular to and communicates with the liquid cooling main pipeline, the other end is open, the electromagnetic valve, the foaming container and the one-way check valve are sequentially arranged on the liquid cooling branch pipeline according to the flow direction of the cooling liquid, the fire detector is electrically connected with the electromagnetic valve, a group of the fire detector, the electromagnetic valve, the one-way check valve, the foaming container and the liquid cooling branch pipeline are respectively arranged in each battery pack, and the foaming container is detachably connected with the liquid cooling branch pipeline.
[0007] Preferably, the opening pressure of the one-way check valve is 2 bar.
[0008] Preferably, a liquid injection hole is formed in the foaming container, and a sealing plug is arranged outside the liquid injection hole.
[0009] Preferably, the foaming container is a square or cuboid container with a volume of 0.1-1 L.
[0010] Preferably, the volume of the foaming container is 0.5 L.
[0011] Preferably, a feeding pipe is arranged at one end of the foaming container, and a discharging pipe is arranged at the opposite end, and the feeding pipe and the discharging pipe are respectively and detachably connected with the liquid cooling branch pipeline.
[0012] Preferably, the feeding pipe and the discharging pipe are respectively and detachably connected with the liquid cooling branch pipeline through a pipeline connector, the pipeline connector comprises a metal pipe body with two open ends, a contraction cavity is formed in the middle of the metal pipe body, the pipe wall on both sides of the contraction cavity is respectively expanded to form two ring grooves, the two ring grooves are symmetrically arranged relative to the contraction cavity, and sealing rings are arranged on the step surfaces on both sides of the contraction cavity and in the ring grooves.
[0013] Preferably, the inner diameter of the metal pipe body is slightly larger than the outer diameter of the liquid cooling branch pipeline, the maximum inner diameter of the contraction cavity is 96%-98% of the inner diameter of the metal pipe body, and the maximum inner diameter of the ring groove is 101%-104% of the inner diameter of the metal pipe body.
[0014] Preferably, the foaming container and the liquid cooling branch pipeline are connected through screw threads, a clamping sleeve, a buckle or a flange.
[0015] Preferably, the liquid cooling main pipeline, the liquid cooling branch pipeline and the metal pipe body are all made of metal, and the pipe wall thickness is 1 mm.
[0016] The liquid cooling pipeline integrates the liquid cooling function and the fire function, saves space and cost, simplifies the manufacturing process of the entire battery system, and improves the production efficiency of the entire battery system. BRIEF DESCRIPTION OF DRAWINGS
[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments description. Obviously, the drawings in the following description only constitute some of the embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor based on these drawings.
[0018] Figure 1 The structural diagram of the liquid cooling pipeline with fire-fighting function provided by the present application;
[0019] Figure 2 The structural diagram of the pipeline connector used by the present application;
[0020] Figure 3 The prior art;
[0021] Figure 4 The structural diagram of the fire-fighting system in Figure 3
[0022] Wherein: 1, liquid cooling main pipeline; 2, fire detector; 3, electromagnetic valve; 4, one-way check valve; 5, foaming container; 6, aluminum sulfate aqueous solution; 7, liquid cooling branch pipeline; 8, pipeline connector; 81, metal pipe body; 82, contraction cavity; 83, ring groove; 84, step surface. DETAILED DESCRIPTION
[0023] The technical solutions in the embodiments of the present application will be described clearly and completely in the following with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments only constitute some of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor belong to the scope of protection of the present application.
[0024] The raw materials used in the following examples and comparative examples are all commercially available. The operations not described in detail in the following examples and comparative examples are all conventional technical means in the art.
[0025] As Figure 1 shown: the present application provides a kind of liquid cooling pipeline with fire-fighting function, it includes: liquid cooling main pipeline 1, fire detector 2, electromagnetic valve 3, one-way check valve 4, foaming container 5 and liquid cooling branch pipeline 7, one end of liquid cooling branch pipeline 7 is perpendicular with liquid cooling main pipeline 1 and communicates, other end is open, liquid cooling branch pipeline 7 is sequentially provided with electromagnetic valve 3, foaming container 5, one-way check valve 4 according to the flow direction of cooling liquid, fire detector 2 is electrically connected with electromagnetic valve 3, each battery pack is respectively provided with a group of fire detector 2, electromagnetic valve 3, one-way check valve 4, foaming container 5 and liquid cooling branch pipeline 7, foaming container 5 and liquid cooling branch pipeline 7 are detachably connected.
[0026] In specific use, the liquid cooling pipe contains cooling liquid, and the cooling liquid is a water-glycol mixture with bicarbonate added, specifically: the cooling liquid is mixed by water solution of bicarbonate and glycol according to a volume ratio of 1:1, the water solution of bicarbonate is obtained by dissolving bicarbonate into water, the mass of bicarbonate in 100g water is 4-6g, and the bicarbonate is sodium bicarbonate and / or potassium bicarbonate. The foaming container 5 stores aluminum sulfate aqueous solution 6.
[0027] When the fire detector 2 detects a fire in the battery pack, it will send a command to open the electromagnetic valve 3 to allow the release of the cooling liquid, and after the release of the cooling liquid, the cooling liquid flows into the foaming container 5, the bicarbonate in the cooling liquid reacts with the aluminum sulfate in the foaming container 5 to generate aluminum hydroxide and carbon dioxide, for example, sodium bicarbonate, the chemical reaction equation is: Al2(SO4)3+6NaHCO3=3Na2SO4+2Al(OH)3↓+6CO2↑. The generated carbon dioxide forms a foam with carbon dioxide as the core and aluminum hydroxide wrapped outside, the foam has the characteristics of strong burn resistance, good durability, good viscosity, etc., has good covering effect and cooling effect, on the other hand, it plays a role in increasing the pressure to promote the spraying of the foam, and finally the foam is quickly sprayed from the opening end of the liquid cooling branch pipe 7 and attached to the surface of the burning object, effectively reducing the temperature of the burning object and isolating it from oxygen, and playing an excellent fire extinguishing effect.
[0028] When the fire detector 2 detects that the fire in the battery pack is eliminated, it will send a command to close the electromagnetic valve 3, so that the cooling liquid cannot pass through, thereby stopping the release of the cooling liquid, and then no longer generating the foam with fire extinguishing function.
[0029] It should be noted that the fire detector 2 and the electromagnetic valve 3 and other components not described in detail are prior art. The fire detector 2 can specifically adopt: Qianye Technology TC01-LN-CYW-QY energy storage fire detection three-in-one fire detector, which can detect carbon monoxide, temperature, smoke, and determine whether a fire occurs; Qianye Technology TC01B-QY composite fire detector, which can detect carbon monoxide, hydrogen, temperature, smoke, and VOC gas concentration (determine whether the electrolyte is leaking), of course, other fire detectors with similar functions can also be used. In theory, any conventional fire detector with carbon monoxide, temperature, and smoke detection functions can be used in the utility model.
[0030] In addition, a porous foam nozzle can be connected to the opening end of the liquid cooling branch pipe 7 to further optimize the spraying direction of the foam, thereby better playing the fire extinguishing function.
[0031] As a preferred technical solution, in another embodiment of the utility model, the opening pressure of the one-way check valve 4 is 2bar.
[0032] The pump pressure of the cooling liquid circulating in the liquid cooling pipeline is generally 2bar, when the foaming chemical reaction occurs, the generated carbon dioxide has a pressurizing effect, so that the one-way check valve 4 can be automatically opened, and then the fire extinguishing foam is smoothly sprayed and quickly covers the surface of the fire object to play a role of temperature reduction and oxygen isolation, thereby playing a good fire extinguishing effect.
[0033] As a preferred technical solution, the foaming container 5 is provided with a liquid injection hole, and a sealing plug is arranged outside the liquid injection hole.
[0034] In the embodiment, the foaming container 5 can be added or supplemented with the aluminum sulfate aqueous solution 6 through the liquid injection hole. The sealing plug arranged outside is removed when the liquid is added, and is installed after the liquid addition is completed, so that the foaming container 5 is in a sealed state. The structure of the liquid injection hole is not limited, which can be a regular hole structure such as a circular hole or a square hole, or an irregular hole structure. The structure of the sealing plug is not limited, as long as it can fully cover and seal the liquid injection hole and has a certain pressure bearing effect. The specific structure of the sealing plug adopts the prior art, and the utility model does not make any requirements.
[0035] In the embodiment, the foaming container 5 does not initially contain the aluminum sulfate aqueous solution 6. After the empty foaming container 5 is connected with the liquid cooling branch pipeline 7, the appropriate amount of aluminum sulfate aqueous solution 6 is injected through the liquid injection hole. This embodiment not only facilitates the connection operation of the foaming container 5 and the liquid cooling branch pipeline 7, but also avoids the leakage of the aluminum sulfate aqueous solution 6 caused by improper connection operation, and has good practicability.
[0036] As a preferred technical solution, another embodiment of the utility model discloses that the foaming container 5 is a square or cuboid container with a volume of 0.1-1L. The volume of the foaming container 5 is most preferably 0.5L, which can meet the needs and will not occupy a large space.
[0037] In the embodiment, the foaming container 5 is designed as a square or cuboid container, considering that most new energy batteries are arranged according to a regular grid or array. In this case, the idle space can have a relatively regular shape, so that the square or cuboid container can be conveniently accommodated.
[0038] As a preferred technical solution, another embodiment of the utility model discloses that the foaming container 5 is provided with a feeding pipe at one end and a discharging pipe at the opposite end, and the feeding pipe and the discharging pipe are respectively connected with the liquid cooling branch pipeline 7 in the same size and detachably.
[0039] As Figure 2As a preferred technical scheme, the utility model discloses another embodiment, the feed pipe, the discharge pipe all respectively through a pipeline connector 8 with liquid cooling branch pipe 7 sealed and can detachable connection, pipeline connector 8 includes a both ends open metal pipe body 81, the middle of metal pipe body 81 is in contract and forms a contraction cavity 82, the part pipe wall of metal pipe body 81 is respectively expanded and forms two ring grooves 83 on the both sides of contraction cavity 82, two ring grooves 83 are symmetrically arranged relative to contraction cavity 82, and the step surface 84 on the both sides of contraction cavity 82 and ring groove 83 are all provided with sealing rings.
[0040] In the application, the flow pressure of the cooling liquid in the liquid cooling pipeline is 2bar, belonging to low pressure range. Under the premise of ensuring coaxiality in the middle contraction cavity 82, pre-sealing by the step surface 84 and pre-connection by the contraction cavity 82, the stable, tight and seamless connection of the two connecting pipelines can be realized by the sealing rings arranged in the two ring grooves 83. Since the pipeline connector 8 is metal, it can provide good support for the foaming container 5 after connection, and the whole liquid cooling branch pipeline 7 is not easy to be damaged and will not cause significant reduction in strength.
[0041] As a preferred technical scheme, the utility model discloses another embodiment, the feed pipe, the discharge pipe all respectively through a pipeline connector 8 with liquid cooling branch pipe 7 sealed and can detachable connection, pipeline connector 8 includes a both ends open metal pipe body 81, the middle of metal pipe body 81 is in contract and forms a contraction cavity 82, the part pipe wall of metal pipe body 81 is respectively expanded and forms two ring grooves 83 on the both sides of contraction cavity 82, two ring grooves 83 are symmetrically arranged relative to contraction cavity 82, and the step surface 84 on the both sides of contraction cavity 82 and ring groove 83 are all provided with sealing rings.
[0042] In the embodiment, the size design of the metal pipe body 81, the contraction cavity 82 and the ring groove 83 is all for the detachable connection of the liquid cooling branch pipeline 7 with the feed pipe and the discharge pipe of the foaming container 5. The inner diameter of the metal pipe body 81 is slightly larger than the outer diameter of the liquid cooling branch pipeline 7, which facilitates the smooth insertion of the liquid cooling branch pipeline 7, the feed pipe and the discharge pipe into the metal pipe body 81 without leaving a large gap. The maximum inner diameter of the contraction cavity 82 is 96%-98% of the inner diameter of the metal pipe body 81, so that the step surface 84 formed thereon can form a good seal with the end face of the liquid cooling branch pipeline 7, the feed pipe and the discharge pipe after the sealing ring is arranged thereon. The maximum inner diameter of the ring groove 83 is 101%-104% of the inner diameter of the metal pipe body 81, so that the sealing ring arranged in the ring groove 83 is in moderate contact with the peripheral surface of the liquid cooling branch pipeline 7, the feed pipe and the discharge pipe, which has a good sealing effect to prevent liquid leakage at the connection and does not affect the disassembly. The utility model proves by the creative labor that when the pipeline connector 8 meets the above design parameter requirements, it can realize the stable and sealed connection of the liquid cooling branch pipeline 7 with the feed pipe and the discharge pipe, and can be manually disassembled when necessary.
[0043] Of course, the foaming container 5 and the liquid cooling branch pipeline 7 can also be connected by other detachable methods, such as threaded connection, sleeve connection, buckle connection or flange connection.
[0044] As a preferred technical solution, the liquid cooling main pipeline 1, the liquid cooling branch pipeline 7 and the metal pipe body 81 are all metal, preferably three-series aluminum or Q235 steel material, and the pipe wall thickness is all 1mm.
[0045] In summary: the liquid cooling pipeline with fire-fighting function has the advantages that when a fire occurs, the cooling liquid containing bicarbonate automatically flows out and generates foam with fire extinguishing function with the aluminum sulfate aqueous solution in the foaming container, and then is sprayed from the opening end of the liquid cooling branch pipeline to play a fire extinguishing role, so that the traditional fire-fighting system in the new energy battery is omitted.
[0046] Although the embodiments of the utility model have been shown and described above, it can be understood that the above-mentioned embodiments are exemplary and cannot be understood as limiting the utility model, and the ordinary skilled in the art can make changes, modifications, replacements and deformations to the above-mentioned embodiments within the scope of the utility model. In addition, the skilled in the art can combine and combine the different embodiments or examples described in the specification and the features of different embodiments or examples without mutual contradiction.
Claims
1. A liquid cooling pipe with fire fighting function, characterized in that, The application relates to a liquid cooling system for battery pack, which comprises a liquid cooling main pipeline (1), a fire detector (2), an electromagnetic valve (3), a one-way check valve (4), a foaming container (5) and a liquid cooling branch pipeline (7), one end of the liquid cooling branch pipeline (7) is perpendicular to and communicates with the liquid cooling main pipeline (1), the other end is open, the electromagnetic valve (3), the foaming container (5) and the one-way check valve (4) are sequentially arranged on the liquid cooling branch pipeline (7) according to the flow direction of the cooling liquid, the fire detector (2) is electrically connected with the electromagnetic valve (3), a group of the fire detector (2), the electromagnetic valve (3), the one-way check valve (4), the foaming container (5) and the liquid cooling branch pipeline (7) are arranged in each battery pack respectively, and the foaming container (5) is detachably connected with the liquid cooling branch pipeline (7). The opening pressure of the one-way check valve (4) is 2 bar.
2. The liquid cooling pipe with fire function according to claim 1, characterized in that, A liquid injection hole is formed in the foaming container (5), and a sealing plug is arranged outside the liquid injection hole.
3. The liquid cooling pipe with fire function of claim 1, wherein, The foaming container (5) is a square or cuboid container with a volume of 0.1-1L.
4. The liquid cooling pipe with fire function of claim 1, wherein, The volume of the foaming container (5) is 0.5L.
5. The liquid-cooled pipe with fire function according to claim 4, characterized in that, One end of the foaming container (5) is provided with an inlet pipe, and the other end is provided with an outlet pipe, the inlet pipe and the outlet pipe are respectively connected with the liquid cooling branch pipeline (7) in the same specification and are detachably connected.
6. The liquid cooling pipe with fire function of claim 1, wherein, The inlet pipe and the outlet pipe are respectively connected with the liquid cooling branch pipeline (7) through a pipeline connector (8) in a sealing and detachable mode, the pipeline connector (8) comprises a metal pipe body (81) with two open ends, a contraction cavity (82) is formed in the middle of the metal pipe body (81), the pipe wall of the metal pipe body (81) is outwardly expanded to form two ring grooves (83) on the two sides of the contraction cavity (82), the two ring grooves (83) are symmetrically arranged relative to the contraction cavity (82), and sealing rings are arranged in the step faces (84) on the two sides of the contraction cavity (82) and in the ring grooves (83).
7. The liquid-cooled pipe with fire function according to claim 6, characterized in that, The inner diameter of the metal pipe body (81) is slightly larger than the outer diameter of the liquid cooling branch pipeline (7), the maximum inner diameter of the contraction cavity (82) is 96%-98% of the inner diameter of the metal pipe body (81), and the maximum inner diameter of the ring groove (83) is 101%-104% of the inner diameter of the metal pipe body (81).
8. The liquid cooling pipe with fire function of claim 7, wherein, The foaming container (5) and the liquid cooling branch pipeline (7) are connected through thread connection, clamping sleeve connection, buckle connection or flange connection.
9. The liquid-cooled pipe with fire function of claim 1, wherein, The liquid cooling main pipeline (1), the liquid cooling branch pipeline (7) and the metal pipe body (81) are all made of metal, and the pipe wall thickness is 1mm.
10. The liquid cooling pipe with fire function of claim 7, wherein,