A kind of sodium ion battery liquid injection leak detection device

Abstract

This utility model discloses a leakage detection device for sodium-ion battery electrolyte filling, including an filling chamber containing an electrolyte storage tank. An electrolyte supply pipeline is connected to the top of the storage tank, with its end passing through the filling chamber. A solenoid valve is installed on the outside of the electrolyte supply pipeline at one end of the storage tank. A combustible gas detector is fixedly installed at the bottom of the filling chamber, and a linkage controller is installed above the detector. This sodium-ion battery leakage detection device, through its integrated combustible gas detector and linkage controller, can quickly detect and respond to flammable gas leaks, directly avoiding the risk of fire or explosion caused by gas leaks. In particular, the rapid shut-off function of the solenoid valve significantly reduces the safety hazards caused by electrolyte leaks, improving the quality and safety of the entire battery production process.

Description

Technical Field

[0001] This utility model relates to the field of sodium-ion battery manufacturing technology, specifically to a leakage detection device for sodium-ion battery electrolyte filling. Background Technology

[0002] Sodium-ion batteries, as an emerging energy storage technology, are gradually being widely used in the energy storage field due to their abundant resources and low cost. However, certain safety hazards exist in the production process of sodium-ion batteries, especially in the electrolyte filling stage. Sodium hexafluorophosphate (NaPF6) electrolyte is one of the commonly used electrolytes in sodium-ion batteries. It is sensitive to water, and when leaked, it will rapidly react with moisture in the air to generate corrosive and toxic gases, such as hydrofluoric acid (HF). These gases are highly corrosive and toxic, posing serious hazards to human health and equipment. In addition, the organic solvents in the electrolyte (such as carbonate solvents) are volatile and will release flammable and irritating vapors when leaked. If these vapors reach their explosive limits in the air, they may cause a fire or explosion upon contact with an ignition source.

[0003] During storage and liquid injection, if the storage container is poorly sealed, flammable and irritating vapors may be released. When these vapors reach their explosive limits in air, they can ignite upon contact with a source of ignition, potentially causing a fire or explosion. Furthermore, existing production workshops primarily rely on gas alarms during liquid injection, which has the following drawbacks:

[0004] (1) Detection delay: The ventilation system of the injection room is not interlocked with the electrolyte leakage alarm device, making it impossible to take measures quickly in the early stage of gas leakage.

[0005] (2) Low efficiency of manual response: It relies on manual operation, has a slow response speed, and poses a great safety hazard.

[0006] (3) Lack of automated processing: It is impossible to automatically cut off the electrolyte supply and discharge the leaked gas, which can easily lead to excessive gas concentration and cause safety accidents.

[0007] Existing patent CN222146534U discloses a sodium-ion battery injector that improves injection efficiency and operational safety, but does not solve the risk of toxic / flammable gas caused by electrolyte leakage.

[0008] These defects not only affect production efficiency, but may also pose a serious threat to the life safety of operators and the production environment. To address this, we propose a leakage detection device for sodium-ion battery filling. Utility Model Content

[0009] The purpose of this invention is to provide a leakage detection device for sodium-ion battery filling, so as to solve the problems mentioned in the background art.

[0010] To achieve the above objectives, this utility model provides the following technical solution: a leakage detection device for sodium-ion battery electrolyte filling, comprising an filling chamber, an electrolyte storage tank disposed within the filling chamber, and an electrolyte supply pipeline connected to the top of the electrolyte storage tank, the end of the electrolyte supply pipeline passing through the filling chamber, an electromagnetic valve installed on the outside of one end of the electrolyte supply pipeline at the electrolyte storage tank, a combustible gas detector fixedly installed at the bottom of the filling chamber, and a linkage controller installed above the combustible gas detector in the filling chamber, an indoor gas exhaust mechanism for accelerating the exhaust of gas from the filling chamber being disposed at the top of the filling chamber, and a guide vane axial flow fan installed at the top of the filling chamber.

[0011] Preferably, the indoor gas exhaust mechanism includes a sealing plate. The top of each side wall of the injection chamber has an outlet, and the top of the outlet is rotatably connected to the sealing plate via a hinge. A fixing rod is fixedly installed above the electrolyte storage tank inside the injection chamber, and a lifting screw is rotatably connected between the fixing rod and the top of the inner wall of the injection chamber. A servo motor is fixedly installed on the top of the injection chamber, and the output shaft end of the servo motor extends into the injection chamber and is fixedly connected to the lifting screw. A lifting block is threaded onto the outer side of the lifting screw. Adjusting support rods are rotatably connected to each side wall of the lifting block. A connecting seat is provided on the side of the sealing plate located at the outlet, and the end of the adjusting support rod is rotatably connected to the connecting seat.

[0012] Preferably, the fixed rod and the top of the injection chamber wall are symmetrically fixed with limit rods, the top of the lifting block is symmetrically provided with limit holes, the limit rod at the top of the fixed rod is slidably connected in the limit hole, and the lifting block is slidably connected to the outside of the two limit rods.

[0013] Preferably, a connecting door is provided on one side of the injection chamber, and ventilation openings are provided at the top of the connecting door and at the top of the side wall of the injection chamber.

[0014] Preferably, the sealing plate has a groove on one side inside the injection chamber, and a slider is provided on the outer side of the connecting seat on the surface of the sealing plate, and the slider is slidably connected in the groove on the surface of the sealing plate.

[0015] Preferably, the linkage controller includes a signal receiving module, a signal processing unit, a signal sending module, a communication interface, and an audible and visual alarm trigger;

[0016] The signal receiving module is used to receive alarm signal transmissions from the connecting door;

[0017] The signal processing unit is used to process the received gas leak alarm signal and generate corresponding control commands;

[0018] The signal transmitting module is used to send a cut-off signal to the solenoid valve and a control signal to the linkage controller according to the processing instruction signal issued by the signal processing unit.

[0019] The audible and visual alarm trigger is used to receive the audible and visual alarm trigger signal from the signal processing unit, activate the on-site audible and visual alarm system, and remind the operator to pay attention;

[0020] The communication interface is used to send status report signals to the dispatch room.

[0021] Preferably, a power module is installed in the injection chamber outside the electrolyte storage tank, and the power module is used to provide a stable power supply to the linkage controller.

[0022] Preferably, an observation window is provided on the outside of the injection chamber below the ventilation opening.

[0023] Compared with the prior art, the beneficial effects of this utility model are:

[0024] This invention, through an integrated combustible gas detector and linkage controller, can quickly detect and respond to flammable gas leaks, directly avoiding the risk of fire or explosion caused by gas leaks. In particular, the rapid shut-off function of the solenoid valve can significantly reduce the safety hazards caused by electrolyte leaks, improving the quality and safety of the entire battery production process.

[0025] This invention utilizes an intelligently controlled guide vane axial flow fan, which, in conjunction with the simultaneous opening of two sealing plates, efficiently discharges leaked gas from the injection room. This significantly improves ventilation efficiency and effectiveness, ensuring a clean working environment, and is particularly effective for cleaning hard-to-reach areas within the injection room.

[0026] This invention, through its remote monitoring function via a communication interface, enables not only real-time on-site response but also the transmission of status information from the injection room to the dispatch room via network, achieving intelligent management. This remote monitoring and intelligent notification function further enhances system security and management efficiency. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0028] Figure 2 This is a cross-sectional view of the present invention.

[0029] Figure 3 This is a schematic diagram of the overall structure of this utility model;

[0030] Figure 4 This is a schematic diagram of the present invention.

[0031] In the diagram: 1. Injection chamber; 2. Connecting door; 3. Electrolyte storage tank; 4. Electrolyte supply pipeline; 5. Solenoid valve; 6. Combustible gas detector; 7. Linkage controller; 8. Power module; 9. Ventilation vent; 11. Indoor gas exhaust mechanism; 12. Fixing rod; 13. Lifting screw; 14. Servo motor; 15. Lifting block; 16. Adjusting support rod; 17. Sealing plate; 18. Guide vane axial flow fan; 20. Observation window. Detailed Implementation

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0033] Please see Figure 1 , Figure 2 and Figure 3 This utility model provides a technical solution: a leakage detection device for sodium-ion battery electrolyte filling, including an filling chamber 1, an electrolyte storage tank 3 is provided in the filling chamber 1, and an electrolyte supply pipeline 4 is connected to the top of the electrolyte storage tank 3. The end of the electrolyte supply pipeline 4 passes through the filling chamber 1. An electromagnetic valve 5 is installed on the outside of one end of the electrolyte supply pipeline 4. A combustible gas detector 6 is fixedly installed at the bottom of the filling chamber 1, and a linkage controller 7 is installed above the combustible gas detector 6 in the filling chamber 1. An indoor gas exhaust mechanism 11 is provided at the top of the filling chamber 1 to accelerate the exhaust of gas inside the filling chamber 1. A guide vane axial flow fan 18 is installed at the top of the filling chamber 1.

[0034] It should be noted that the electrolyte injection chamber 1 is a dedicated working area in the sodium-ion battery production process for injecting electrolyte into battery cells or battery packs. This area is typically equipped with dedicated electrolyte injection equipment, electrolyte storage and delivery systems, and necessary safety protection facilities to ensure the accuracy, safety, and efficiency of the electrolyte injection process. A combustible gas detector 6 is installed in the electrolyte injection chamber 1 to monitor the concentration of combustible gas in the environment in real time. Once a combustible gas leak is detected, the combustible gas detector 6 will immediately send an alarm signal to the linkage controller 7 via signal transmission. The guide vane axial flow fan 18 is used to exhaust the leaked gas in the electrolyte injection chamber. When the linkage controller 7 issues a control signal, the guide vane axial flow fan 18 starts rapidly to exhaust the leaked flammable gas to the outside, reducing the gas concentration in the electrolyte injection chamber 1 and preventing it from reaching the explosion limit.

[0035] Please see Figure 2The indoor gas exhaust mechanism 11 includes a sealing plate 17. The top of each side wall of the injection chamber 1 is provided with an exhaust port, and the top of the exhaust port is rotatably connected to the sealing plate 17 via a hinge. A fixing rod 12 is fixedly installed above the electrolyte storage tank 3 inside the injection chamber 1, and a lifting screw 13 is rotatably connected between the fixing rod 12 and the top of the inner wall of the injection chamber 1. A servo motor 14 is fixedly installed on the top of the injection chamber 1, and the end of the output shaft of the servo motor 14 extends into the injection chamber 1 and is fixedly connected to the lifting screw 13. A lifting block 15 is threadedly connected to the outside of the lifting screw 13. Adjusting support rods 16 are rotatably connected to each side wall of the lifting block 15. A connecting seat is provided on one side of the sealing plate 17 at the exhaust port, and the end of the adjusting support rod 16 is rotatably connected to the connecting seat.

[0036] It should be noted that the combustible gas detector 6 can detect the leakage of combustible gas in the injection chamber 1. When a combustible gas leak is detected, the combustible gas detector 6 will immediately send an alarm signal to the linkage controller 7 through signal transmission. When the linkage controller 7 issues a control signal, the guide vane axial flow fan 18 will start quickly to discharge the leaked flammable gas to the outside, reduce the gas concentration in the room and prevent it from reaching the explosion limit. At the same time, the servo motor 14 drives the lifting screw 13 to rotate. Through the threaded connection between the lifting block 15 and the lifting screw 13, the lifting block 15 is raised. The rise of the lifting block 15 pulls one end of the two adjusting support rods 16 to rise, while the other end of the adjusting support rods 16 pushes the sealing plate 17 to rotate, so that the inside of the injection chamber 1 is connected to the outside through two discharge ports, so that the combustible gas inside the injection chamber 1 is quickly discharged.

[0037] Please see Figure 2 A limiting rod is symmetrically fixed between the top of the fixed rod 12 and the top of the inner wall of the injection chamber 1. A limiting hole is symmetrically opened on the top of the lifting block 15. The limiting rod at the top of the fixed rod 12 is slidably connected in the limiting hole. The lifting block 15 is slidably connected to the outside of the two limiting rods.

[0038] It should be noted that during the lifting process of the lifting block 15, the two limit rods play a limiting role, ensuring the smooth lifting of the lifting block 15.

[0039] Please see Figure 1 and Figure 2 A connecting door 2 is provided on one side of the injection chamber 1, and ventilation openings 9 are provided at the top of the connecting door 2 and the top of one side wall of the injection chamber 1.

[0040] It should be noted that the connection door 2 is designed to facilitate opening the injection chamber 1 and to facilitate the inspection and maintenance of the internal components of the injection chamber 1.

[0041] Please see Figure 2The sealing plate 17 has a groove on one side inside the injection chamber 1, and a slider is provided on the outside of the connecting seat on the surface of the sealing plate 17, and the slider is slidably connected in the groove on the surface of the sealing plate 17.

[0042] It should be noted that adjusting the support rod 16 lifts the bottom of the sealing plate 17, causing the sealing plate 17 to rotate. At the same time, during the process of lifting the top of the sealing plate 17, the connecting seat on the sealing plate 17 moves to a certain position, which makes it easier to open the sealing plate 17, so that the outlet at the top of the injection chamber 1 is in an open shape, thereby facilitating the rapid dissipation of combustible gas inside the injection chamber 1.

[0043] Please see Figure 4 The linkage controller 7 includes a signal receiving module, a signal processing unit, a signal sending module, a communication interface, and an audible and visual alarm trigger. The signal receiving module is used to receive alarm signals transmitted from the combustible gas detector 6. The signal processing unit is used to process the received gas leak alarm signals and generate corresponding control commands. The signal sending module is used to send cut-off signals to the solenoid valve 5 and control signals to the linkage controller 7 according to the processing command signals sent by the signal processing unit. The audible and visual alarm trigger is used to receive audible and visual alarm trigger signals from the signal processing unit, activate the on-site audible and visual alarm system, and remind operators to pay attention. The communication interface is used to send status report signals to the dispatch room.

[0044] It should be noted that during use, the combustible gas detector 6 can detect the leakage of combustible gas in the injection chamber 1. When a combustible gas leak is detected, the signal processing unit can receive the gas leak alarm signal and generate corresponding control commands. The signal sending module sends a cut-off signal to the solenoid valve 5 according to the processing command signal issued by the signal processing unit. The combustible gas detector 6 sends an alarm signal to the linkage controller 7 through signal transmission. When the linkage controller 7 issues a control signal, the guide vane axial flow fan 18 starts quickly to discharge the leaked flammable gas to the outside, reduce the gas concentration in the room, and prevent it from reaching the explosion limit. At the same time, the servo motor 14 drives the lifting screw 13 to rotate. Through the threaded connection between the lifting block 15 and the lifting screw 13, the lifting block 15 is raised. The rise of the lifting block 15 pulls one end of the two adjusting support rods 16 to rise, while the other end of the adjusting support rods 16 pushes the sealing plate 17 to rotate, so that the inside of the injection chamber 1 is connected to the outside through two discharge ports, so that the combustible gas inside the injection chamber 1 is quickly discharged. The communication interface sends a status report signal to the dispatch room.

[0045] Please see Figure 2 A power module 8 is installed inside the injection chamber 1 outside the electrolyte storage tank 3, and the power module 8 is used to provide a stable power supply to the linkage controller 7.

[0046] It should be noted that the power module 8 provides a stable power supply to the linkage controller 7, ensuring that all modules work properly.

[0047] Please see Figure 3 An observation window 20 is provided on the outside of the injection chamber 1, below the ventilation opening 9.

[0048] It should be noted that the observation window 20 is used to observe the internal components of the injection chamber 1.

[0049] Furthermore, the terms "first," "second," "third," and "fourth" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first," "second," "third," or "fourth" may explicitly or implicitly include at least one of those features.

[0050] In this utility model, unless otherwise explicitly specified and limited, the terms "installation", "setting", "connection", "fixing", "screw connection", etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal connection of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0051] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A kind of sodium ion battery liquid injection leak detection device, including liquid injection chamber (1), it is characterized in that, An electrolyte storage tank (3) is provided inside the injection chamber (1), and an electrolyte supply pipeline (4) is connected to the top of the electrolyte storage tank (3). The end of the electrolyte supply pipeline (4) passes through the injection chamber (1). An electromagnetic valve (5) is installed on the outside of one end of the electrolyte supply pipeline (4). A combustible gas detector (6) is fixedly installed at the bottom of the injection chamber (1), and a linkage controller (7) is installed above the combustible gas detector (6) inside the injection chamber (1). An indoor gas exhaust mechanism (11) is provided at the top of the injection chamber (1) to accelerate the exhaust of gas inside the injection chamber (1). A guide vane axial flow fan (18) is installed at the top of the injection chamber (1). 2.The sodium-ion battery liquid injection leakage detection device according to claim 1, characterized in that: The indoor gas exhaust mechanism (11) includes a sealing plate (17). The top of each side wall of the injection chamber (1) is provided with an exhaust port, and the top of the exhaust port is rotatably connected to the sealing plate (17) by a hinge. A fixing rod (12) is fixedly installed above the electrolyte storage tank (3) in the injection chamber (1). A lifting screw (13) is rotatably connected between the fixing rod (12) and the top of the inner wall of the injection chamber (1). A servo motor (14) is fixedly installed on the top of the injection chamber (1). The output shaft end of the servo motor (14) extends into the injection chamber (1) and is fixedly connected to the lifting screw (13). A lifting block (15) is threadedly connected to the outside of the lifting screw (13). An adjusting support rod (16) is rotatably connected to each side wall of the lifting block (15). A connecting seat is provided on one side of the sealing plate (17) at the exhaust port. The end of the adjusting support rod (16) is rotatably connected to the connecting seat. 3.The sodium-ion battery liquid injection leakage detection device according to claim 2, characterized in that: Limiting rods are symmetrically fixed between the top of the fixed rod (12) and the inner wall of the injection chamber (1). Limiting holes are symmetrically opened on the top of the lifting block (15). The limiting rod at the top of the fixed rod (12) is slidably connected in the limiting hole. The lifting block (15) is slidably connected to the outside of the two limiting rods. 4.The sodium-ion battery liquid injection leakage detection device according to claim 1, characterized in that: A connecting door (2) is provided on one side of the injection chamber (1), and ventilation openings (9) are provided at the top of the connecting door (2) and the top of one side wall of the injection chamber (1). 5.The sodium-ion battery liquid injection leakage detection device according to claim 2, characterized in that: The sealing plate (17) has a groove on one side inside the injection chamber (1). A slider is provided on the outside of the connecting seat on the surface of the sealing plate (17), and the slider is slidably connected in the groove on the surface of the sealing plate (17). 6.The sodium-ion battery liquid injection leakage detection device according to claim 1, characterized in that: The linkage controller (7) includes a signal receiving module, a signal processing unit, a signal sending module, a communication interface, and an audible and visual alarm trigger; The signal receiving module is used to receive alarm signal transmissions from the connecting door (2); The signal processing unit is used to process the received gas leak alarm signal and generate corresponding control commands; The signal sending module is used to send a cut-off signal to the solenoid valve (5) and a control signal to the linkage controller (7) according to the processing instruction signal issued by the signal processing unit. The audible and visual alarm trigger is used to receive the audible and visual alarm trigger signal from the signal processing unit, activate the on-site audible and visual alarm system, and remind the operator to pay attention; The communication interface is used to send status report signals to the dispatch room. 7.The sodium-ion battery liquid injection leakage detection device according to claim 1, characterized in that: The injection chamber (1) is located outside the electrolyte storage tank (3) and a power module (8) is provided. The power module (8) is used to provide a stable power supply to the linkage controller (7). 8.The sodium-ion battery liquid injection leakage detection device according to claim 4, characterized in that: An observation window (20) is provided on the outside of the injection chamber (1) below the vent (9).

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