Gas-liquid separator and negative pressure formation system

Abstract

This invention discloses a gas-liquid separator and a negative pressure formation system, relating to the field of battery manufacturing technology. The gas-liquid separator has an inner cavity, which is divided into an inlet channel, an outlet channel, and a separation chamber. The gas-liquid separator is provided with an inlet, an outlet, and a drain outlet. The upper end of the inlet channel is connected to the inlet, the upper end of the outlet channel is connected to the outlet, and the lower end of the separation chamber is connected to the drain outlet. The gas-liquid separator also includes a filter element, which is disposed in the outlet channel. The filter element is provided with multiple filter filaments distributed along the outlet direction. The gas-liquid mixture can collide with the filter filaments multiple times in the outlet channel, so that the gas-liquid mixture can transfer heat to the filter filaments, thereby further cooling and precipitating liquid. Moreover, when the gas-liquid mixture contacts the filter filaments multiple times, the flow rate of the gas-liquid mixture will decrease, thereby taking into account the evacuation time required after the battery generates gas and the low flow rate required by the gas-liquid separator, achieving efficient gas-liquid separation.

Description

Technical Field

[0001] This invention relates to the field of battery manufacturing technology, and in particular to a gas-liquid separator and a negative pressure formation system. Background Technology

[0002] In related technologies, batteries require pre-charging and formation before leaving the factory. During charging and discharging, electrolyte gas and liquid enter the negative pressure cup through the battery filling port and negative pressure nozzle. To prevent battery bulging due to electrolyte gas expansion, the electrolyte gas entering the negative pressure cup needs to be promptly removed by the system's vacuum pump. However, removing the electrolyte gas from the negative pressure cup also carries away a certain amount of electrolyte. Because the viscosity and crystals of the electrolyte are detrimental to the normal operation of the control valves and proportional valves at the downstream end of the gas path, and because the environmental treatment equipment at the downstream end of the gas path mainly treats electrolyte gas and not electrolyte liquid, a gas-liquid separator is needed upstream of the control valves and proportional valves for gas-liquid separation. However, existing gas-liquid separators have poor gas-liquid separation efficiency, with a high gas velocity at the outlet and a significant amount of liquid remaining in the gas stream. Summary of the Invention

[0003] The present invention aims to at least solve one of the technical problems existing in the prior art. To this end, the present invention proposes a gas-liquid separator that can improve the gas-liquid separation effect.

[0004] The present invention also proposes a negative pressure formation system having the above-mentioned gas-liquid separator.

[0005] According to a first aspect of the present invention, a gas-liquid separator has an inner cavity, which is divided into an air inlet channel, an air outlet channel, and a separation chamber. The gas-liquid separator is provided with an air inlet, an air outlet, and a liquid outlet. The upper end of the air inlet channel is connected to the air inlet, the upper end of the air outlet channel is connected to the air outlet, and the lower end of the separation chamber is connected to the liquid outlet. The lower ends of the air inlet channel and the lower ends of the air outlet channel are both connected to the upper end of the separation chamber.

[0006] The gas-liquid separator further includes a filter element, which is disposed in the gas outlet channel and has multiple filter filaments distributed along the gas outlet direction.

[0007] The gas-liquid separator according to the first aspect of the present invention has at least the following beneficial effects:

[0008] When the gas-liquid separator of the present invention is working, the gas-liquid mixture enters the gas-liquid separator through the air inlet. The gas-liquid mixture undergoes preliminary cooling in the air inlet channel and separation chamber to precipitate liquid. Then, the gas-liquid mixture enters the air outlet channel and contacts the filter element. Since the filter element is provided with multiple filter wires distributed along the air outlet direction, the gas-liquid mixture can collide with the filter wires multiple times in the air outlet channel. This allows the gas-liquid mixture to transfer heat to the filter wires, thereby further cooling and precipitating liquid. The precipitated liquid enters the separation chamber and is discharged from the gas-liquid separator through the drain port, thereby improving the gas-liquid separation effect of the gas-liquid separator. Moreover, when the gas-liquid mixture contacts the filter wires multiple times, the flow rate of the gas-liquid mixture decreases, resulting in a longer contact time between the gas-liquid mixture and the filter wires in the air outlet channel. This is beneficial for further cooling of the gas-liquid mixture to precipitate residual liquid. Furthermore, it allows the airflow velocity discharged through the air outlet to be reduced to a lower range, thereby taking into account the evacuation time required after battery gas generation and the low flow rate required by the gas-liquid separator, achieving efficient gas-liquid separation.

[0009] According to some embodiments of the present invention, the filter element is a wire brush, the wire brush includes a support roller, the filter wire is a steel wire, and the steel wire is disposed on the outer peripheral wall of the support roller.

[0010] According to some embodiments of the present invention, the outer peripheral wall of the support roller is provided with multiple layers of steel wire groups, each layer of the steel wire group including multiple steel wires spaced apart along the circumference of the support roller, and the steel wire groups of adjacent layers are staggered along the axial direction of the support roller.

[0011] According to some embodiments of the present invention, the steel wires form a multi-layer steel wire mesh, and the multiple layers of the steel wire mesh are sequentially wound around the outer peripheral wall of the support roller.

[0012] According to some embodiments of the present invention, the filter element is a steel wire ball, and the filter wire is wound into a ball shape.

[0013] According to some embodiments of the present invention, the filter filament abuts against the inner wall of the air outlet channel.

[0014] According to some embodiments of the present invention, the gas-liquid separator further includes a guide fluid disposed in the inner cavity, the guide fluid including a cylinder and a heat sink, the cylinder having the outlet channel formed inside, and the heat sink being connected to the outer wall of the cylinder and located within the inlet channel.

[0015] According to some embodiments of the present invention, the gas-liquid separator further includes an upper cover, a lower cover, and a cup. The upper cover is connected to the upper end of the cup, and the lower cover is connected to the lower end of the cup. The cup, the upper cover, and the lower cover form the inner cavity. The air inlet and the air outlet are disposed on the upper cover, and the liquid outlet is disposed on the lower cover. The guide fluid is located inside the cup. The inner cavity between the outer wall of the cylinder and the inner wall of the cup constitutes the air inlet channel. The lower end of the guide fluid, together with the cup and the lower cover, defines the separation cavity.

[0016] According to some embodiments of the present invention, the gas-liquid separator further includes a sealing element disposed in the cup body, the sealing element having a transition channel formed inside, the upper end of the sealing element being sealed to the inner wall of the upper cover so that the upper end of the transition channel communicates with the gas outlet, and the lower end of the sealing element being sealed to the upper end of the guide fluid so that the lower end of the transition channel communicates with the upper end of the gas outlet channel.

[0017] According to some embodiments of the present invention, the outer wall of the lower end of the seal is recessed to form a stepped edge, and the seal abuts against the fluid guide through the stepped edge.

[0018] According to some embodiments of the present invention, the transition channel includes a first channel and a second channel, the end of the first channel opposite to the second channel is connected to the air outlet, the end of the second channel opposite to the first channel is connected to the air outlet channel, and the inner diameter of the first channel is larger than the inner diameter of the second channel.

[0019] According to some embodiments of the present invention, the gas-liquid separator further includes an elastic element disposed in the inner cavity, the upper end of the elastic element abutting against the lower end of the fluid guide, and the lower end of the elastic element abutting against the inner wall of the cup body or the lower cover body.

[0020] According to some embodiments of the present invention, the gas-liquid separator further includes a filter screen disposed between the filter element and the seal.

[0021] According to some embodiments of the present invention, the lower cover is provided with an exhaust channel, the upper end of the exhaust channel is provided with a downwardly inclined guide surface, and the drain port is located at the lower end of the exhaust channel.

[0022] The negative pressure formation system according to a second aspect of the present invention includes the gas-liquid separator according to a first aspect of the present invention.

[0023] According to some embodiments of the present invention, the negative pressure formation system further includes a negative pressure component, a waste gas treatment device, a waste liquid recovery device, and a vacuum pump. The vacuum pump is used to generate negative pressure at the suction port of the negative pressure component. The air inlet of the gas-liquid separator is connected to the negative pressure component, the air outlet of the gas-liquid separator is connected to the waste gas treatment device, and the liquid outlet of the gas-liquid separator is connected to the waste liquid recovery device.

[0024] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0025] Additional aspects and advantages of the invention will become apparent and readily understood in conjunction with the following description of the embodiments in conjunction with the accompanying drawings, wherein:

[0026] Figure 1 This is a schematic diagram of the structure of a gas-liquid separator according to some embodiments of the present invention;

[0027] Figure 2 for Figure 1 A cross-sectional schematic diagram of the gas-liquid separator in the diagram;

[0028] Figure 3 This is a schematic diagram of the structure of the guide fluid of the gas-liquid separator in some embodiments of the present invention;

[0029] Figure 4 This is another schematic diagram of the guide fluid of the gas-liquid separator in some embodiments of the present invention;

[0030] Figure 5 This is a schematic diagram showing the guide fluid of a gas-liquid separator according to some embodiments of the present invention installed inside a cup.

[0031] Figure 6 This is a structural framework diagram of a negative pressure formation system according to some embodiments of the present invention.

[0032] The attached icons are numbered as follows:

[0033] Upper cover 100; air inlet 110; air inlet pipe 111; air outlet 120; air outlet pipe 121;

[0034] Lower cover 200; drain port 210;

[0035] Cup body 300; air inlet channel 310; air outlet channel 320; separation chamber 330; fins 340;

[0036] 400; 410; 420; 421; 422; 423; 424;

[0037] Filter element 500; Seal 600; Transition channel 610; Elastic element 700; Filter screen 800;

[0038] Gas-liquid separator 1000; negative pressure cup 2000; manifold 3000; proportional valve 4000; waste gas treatment device 5000; vacuum pump 6000; waste liquid recovery device 7000; battery 8000. Detailed Implementation

[0039] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0040] In the description of this invention, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc., are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0041] In the description of this invention, the use of "first" and "second" is for the purpose of distinguishing technical features only, and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or the order of the technical features indicated.

[0042] In the description of this invention, unless otherwise explicitly defined, terms such as "set up," "install," and "connect" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this invention in conjunction with the specific content of the technical solution.

[0043] In related technologies, batteries require pre-charging and formation before leaving the factory. During charging and discharging, electrolyte gas and liquid enter the negative pressure cup through the battery filling port and negative pressure nozzle. To prevent battery bulging due to electrolyte gas expansion, the electrolyte gas entering the negative pressure cup needs to be promptly removed by the system's vacuum pump. However, removing the electrolyte gas from the negative pressure cup also carries away a certain amount of electrolyte. Because the viscosity and crystals of the electrolyte are detrimental to the normal operation of the control valves and proportional valves at the downstream end of the gas path, and because the environmental treatment equipment at the downstream end of the gas path mainly treats electrolyte gas and not electrolyte liquid, a gas-liquid separator is needed upstream of the control valves and proportional valves for gas-liquid separation. However, existing gas-liquid separators have poor gas-liquid separation efficiency, with a high gas velocity at the outlet and a significant amount of liquid remaining in the gas stream.

[0044] Therefore, this invention proposes a gas-liquid separator that can improve the gas-liquid separation effect.

[0045] Reference Figures 1 to 5 The first aspect of the present invention provides a gas-liquid separator 1000, comprising a main body, a cup body 300, and a filter element 500. The main body can be a single piece or composed of multiple separate parts. For example, in some embodiments, the main body includes an upper cover 100 and a lower cover 200. The upper cover 100 and the lower cover 200 can be aluminum molded parts or aluminum machined parts, thus both the upper cover 100 and the lower cover 200 have good thermal conductivity and processing performance. Of course, the upper cover 100 and the lower cover 200 can also be made of other suitable materials. The upper cover 100 is provided with an air inlet 110 and an air outlet 120. The air inlet 110 is used to introduce a gas-liquid mixture, and the air outlet 120 is used to discharge gas. Of course, an air inlet pipe 111 can also be installed at the air inlet 110, and an air outlet pipe 121 can be installed at the air outlet 120, so that it can be quickly connected to an external pipeline through the air inlet pipe 111 and the air outlet pipe 121. The lower cover 200 is provided with a drain port 210 for discharging liquid from the gas-liquid mixture. The cup body 300 is connected between the upper cover 100 and the lower cover 200. The cup body 300 is hollow, thus forming the inner cavity of the gas-liquid separator by the upper cover 100, the cup body 300, and the lower cover 200. Specifically, the upper cover 100 and the lower cover 200 can be connected by a connecting rod, thereby confining the cup body 300 between them. The cup body 300 can be made of aluminum profile, which has good thermal conductivity and processing performance, and is relatively inexpensive. Of course, the cup body 300 can also be made of other suitable materials. Fins 340 can be provided on the outer wall of the cup body 300 to improve its heat dissipation capacity. Specifically, the inner cavity is divided into an air inlet channel 310, an air outlet channel 320, and a separation chamber 330. The upper end of the air inlet channel 310 is connected to the air inlet 110, and the upper end of the air outlet channel 320 is connected to the air outlet 120. The drain port 210 is connected to the lower end of the separation chamber 330, and the lower ends of both the air inlet channel 310 and the air outlet channel 320 are connected to the upper end of the separation chamber 330. The air inlet 110 can be located in the area near the outer periphery of the upper cover 100 to facilitate communication with the air inlet channel 310. The air outlet 120 is located in the area near the center of the upper cover 100 to facilitate communication with the air outlet channel 320. The filter element 500 is located in the air outlet channel 320, and the filter element 500 has multiple filter filaments distributed along the air outlet direction. The filter filaments can be steel wire, copper wire, or other filaments with good thermal conductivity.

[0046] When the gas-liquid separator 1000 is working, the gas-liquid mixture enters the gas-liquid separator 1000 through the air inlet 110 of the upper cover 100. The gas-liquid mixture undergoes preliminary cooling in the air inlet channel 310 and the separation chamber 330 to precipitate liquid. Then, the gas-liquid mixture enters the air outlet channel 320 and comes into contact with the filter element 500. Since the filter element 500 is provided with multiple filter wires distributed along the air outlet direction, the gas-liquid mixture can collide with the filter wires multiple times in the air outlet channel 320, allowing the gas-liquid mixture to transfer heat to the filter wires for further cooling and precipitation of liquid. The precipitated liquid enters the separation chamber 330 and passes through... The liquid outlet 210 discharges from the gas-liquid separator 1000, thereby improving the gas-liquid separation effect of the gas-liquid separator 1000. Moreover, when the gas-liquid mixture comes into contact with the filter wire multiple times, the flow rate of the gas-liquid mixture will decrease, so that the contact time between the gas-liquid mixture and the filter wire in the gas outlet channel 320 is longer. This is conducive to further cooling of the gas-liquid mixture to precipitate residual liquid. In addition, it can reduce the gas flow rate discharged through the gas outlet 120 to a lower range, thereby taking into account the evacuation time required after the battery 8000 generates gas and the low flow rate required by the gas-liquid separator 1000, and achieving efficient gas-liquid separation.

[0047] Understandably, in order to ensure the filter wire is securely positioned within the air outlet channel 320, in some embodiments of the present invention, the filter element 500 is a wire brush, which includes a support roller. The filter wire is a steel wire disposed on the outer peripheral wall of the support roller, thereby ensuring the steel wire is well fixed to the support roller and thus making the steel wire more stable within the air outlet channel 320. When installing the filter element 500, the support roller is tightened and limited by a clamping member, which fixes the position of the steel wire. This facilitates efficient gas-liquid separation of the gas-liquid mixture by the filter element 500 and improves the ease of installation of the filter element 500.

[0048] It should be noted that the support roller is roughly rod-shaped, and its axial direction is basically consistent with the air outlet direction of the air outlet channel 320. In order to improve the collision, cooling and deflection effect of the gas-liquid mixture and the steel wire, in some embodiments of the present invention, the outer peripheral wall of the support roller is distributed with multiple layers of steel wire groups. Each layer of steel wire group includes multiple steel wires arranged at intervals along the circumference of the support roller. The steel wire groups of adjacent layers are staggered along the axial direction of the support roller, which can further increase the number of collisions between the gas-liquid mixture and the steel wire, which is beneficial to further release the liquid contained in the gas-liquid mixture and reduce the flow rate of the gas-liquid mixture.

[0049] It is understood that the wire brush can also have other structural forms. For example, in some embodiments of the present invention, the steel wires form a multi-layered wire mesh, which is sequentially wound around the outer peripheral wall of the support roller along the radial direction of the support roller. Each layer of wire mesh has densely distributed mesh openings, allowing the gas-liquid mixture to pass through the mesh openings and collide fully with the steel wires, thereby facilitating liquid precipitation and reducing flow velocity. Of course, the mesh openings of each layer of wire mesh can be set differently, so that the gas-liquid mixture can more easily collide with adjacent layers of wire mesh after passing through the mesh openings of one layer, thereby improving the collision cooling and deflection effect of the gas-liquid mixture and the steel wires.

[0050] It is understood that the filter element 500 can also be in other structural forms. For example, in some embodiments of the present invention, the filter element 500 is a steel wool ball. The steel wool ball is wrapped in a ball and filled in the air outlet channel 320. At this time, the steel wool ball is irregularly distributed in the air outlet channel 320, so that when the gas-liquid mixture passes through the air outlet channel 320, it can collide more fully with the steel wool ball. This is beneficial to improving the collision cooling and deflection effect of the gas-liquid mixture and the steel wool ball. Moreover, the manufacturing cost of the steel wool ball is relatively low, which helps to reduce the cost of the gas-liquid separator 1000.

[0051] Understandably, in order for the gas-liquid mixture to fully contact the filter element when passing through the outlet channel 320, in some embodiments of the present invention, the filter wire abuts against the inner wall of the outlet channel 320, so that the filter wire can block the entire outlet channel 320 in the outlet direction, thereby enabling the filter wire to fully filter the gas-liquid mixture passing through the outlet channel 320, which is beneficial to further improve the collision cooling and deflection effect between the gas-liquid mixture and the filter wire.

[0052] It is understood that in some embodiments of the present invention, the gas-liquid separator 1000 includes filter elements 500 of various specifications, so that a suitable filter element 500 can be selected and installed in the gas outlet channel 320 as needed to obtain the required airflow velocity at the gas outlet 120. For example, when the filter element 500 is a wire brush, a suitable outer diameter and thickness of the wire brush can be selected as needed to reduce the airflow velocity and liquid content at the gas outlet 120 to the required level; when the filter element 500 is a steel wool ball, a suitable shape and volume of the steel wool ball can be selected as needed to reduce the airflow velocity and liquid content at the gas outlet 120 to the required level.

[0053] It should be noted that in some embodiments of the present invention, the lower cover 200 is provided with an exhaust channel, the upper end of which is provided with a downwardly inclined guide surface, and the lower end of which forms a drain port 210. This arrangement reduces the flow rate of the liquid as it passes through the guide surface before being discharged through the drain port 210, thereby increasing the gas-liquid separation time and improving the gas-liquid separation effect.

[0054] Reference Figure 2 In some embodiments of the present invention, the gas-liquid separator 1000 further includes a guide fluid 400 located in the inner cavity. The guide fluid 400 includes a cylinder 410 and a heat sink 420. The heat sink 420 is connected to the outer wall of the cylinder 410, and the inner cavity between the outer wall of the cylinder 410 and the inner wall of the cup 300 forms an air inlet channel 310. The interior of the guide fluid 400 is vertically connected to form an air outlet channel 320. The upper end of the air inlet channel 310 communicates with the air inlet 110, and the upper end of the air outlet channel 320 communicates with the air outlet 120. In some embodiments, the lower end of the cylinder 410 is higher than the lower end of the cup 300. In this case, the lower end of the cylinder 410, the lower cover 200, and the cup 300 together define a separation cavity 330. Alternatively, the lower end of the cylinder 410 may be flush with the lower end of the cup 300, and the lower cover 200 may be recessed to form the separation cavity 330. The drain port 210 connects to the lower end of the separation chamber 330, and the lower ends of both the air inlet channel 310 and the air outlet channel 320 connect to the upper end of the separation chamber 330. The air inlet 110 can be located in the area near the outer periphery of the upper cover 100, thus facilitating communication with the air inlet channel 310. The air outlet 120 is located in the area near the center of the upper cover 100, thus facilitating communication with the air outlet channel 320.

[0055] The gas-liquid separator 1000 has a guide fluid 400 inside the cup body 300. When the gas-liquid separator is working, the gas-liquid mixture enters the gas-liquid separator from the air inlet 110 of the upper cover body 100 and then flows along the air inlet channel 310. At this time, the gas-liquid mixture can fully contact the inner wall of the cup body 300, the heat dissipation fins 420 of the guide fluid 400, and the outer wall of the cylinder 410 in the air inlet channel 310. This allows the heat in the gas-liquid mixture to be quickly dissipated to the outside through the cup body 300 and the guide fluid 400 to achieve cooling. As a result, the liquid in the gas-liquid mixture can be quickly separated. The separated liquid then enters the separation chamber 330 and is discharged from the gas-liquid separator through the drain port 210. The gas passes through the air outlet channel 320 and is discharged from the gas-liquid separator through the air outlet 120. This achieves rapid separation of gas and liquid in the gas-liquid mixture and has a high gas-liquid separation effect.

[0056] It is understandable that, in order to improve the gas-liquid separation effect after the gas-liquid mixture passes through the inlet channel 310, in some embodiments of the present invention, reference is made to... Figure 3 and Figure 4The heat sink 420 extends radially along the cylinder 410 and is rotatably arranged around the axis of the cylinder 410. With the above arrangement, when the gas-liquid mixture flows in the air inlet channel 310, the gas-liquid mixture can flow along the rotatably arranged heat sink 420 to generate a vortex airflow, so that the liquid with a higher specific gravity entrained in the airflow can be thrown out to the inner wall of the cup 300. Then, under the action of gravity and the airflow, the liquid flows to the bottom of the separation chamber 330 and is finally discharged from the drain port 210, thereby further improving the gas-liquid separation effect of the gas-liquid separator in this embodiment. To make the vortex airflow generated after the gas-liquid mixture passes through the air intake channel 310 more pronounced, in some embodiments of the present invention, the heat sink 420 may extend along the axis of the cylinder 410 and be spirally arranged around the axis, so that the airflow travels a longer distance along the rotating flow of the heat sink 420. This allows the airflow to generate a more pronounced vortex airflow when it flows to the lower end of the air intake channel 310, enabling more liquid in the airflow to be thrown out to the inner wall of the cup 300 and flow to the bottom of the separation chamber 330, and finally discharged from the drain port 210. Of course, the heat sink 420 may also be a twisted blade, which possesses the characteristics and effects of the heat sink 420 in the two embodiments described above.

[0057] Understandably, in order to improve the cooling effect of the gas-liquid mixture within the intake channel 310, refer to Figure 3 In some embodiments of the present invention, the number of heat sinks 420 is set to multiple, and the multiple heat sinks 420 are arranged at intervals along the circumference of the cylinder 410, thereby greatly increasing the surface area of ​​the air intake channel 310, so that the gas-liquid mixture can make more sufficient contact with the heat sinks 420 in the air intake channel 310, thereby reducing the temperature of the gas-liquid mixture more quickly, allowing the liquid in the gas-liquid mixture to precipitate more quickly, and further improving the efficiency of gas-liquid separation.

[0058] Reference Figure 3 It is understood that, in order to further increase the surface area of ​​the air intake channel 310, in some embodiments of the present invention, the heat sink 420 includes a first plate 421, a second plate 422, and a base 423. One end of the base 423 is connected to the outer wall of the cylinder 410, and the other end of the base 423 is connected to the first plate 421 and the second plate 422. With the above arrangement, the surface area of ​​the heat sink 420 is increased, thereby increasing the surface area of ​​the air intake channel 310, allowing the gas-liquid mixture to cool down more quickly within the air intake channel 310, thereby precipitating the liquid in the gas-liquid mixture. Of course, it should be noted that the heat sink 420 may also include more plates, such as a third plate, a fourth plate, etc., thereby further increasing the surface area of ​​the heat sink 420.

[0059] Reference Figure 3It is understood that, in order to make the gas-liquid mixture more fully contacted with the heat sink 420, in some embodiments of the present invention, the end of the base 423 away from the cylinder 410 has a connecting portion 424. The connecting portion 424 extends circumferentially along the cylinder 410. The first piece 421 and the second piece 422 are connected to the two ends of the connecting portion 424, so that the first piece 421 and the second piece 422 can be spaced apart, so that when the gas-liquid mixture flows in the air inlet channel 310, it can make full contact with the first piece 421 and the second piece 422, which is conducive to the rapid cooling of the gas-liquid mixture to precipitate liquid and achieve efficient gas-liquid separation.

[0060] Understandably, to prevent the gas-liquid mixture from flowing through the inlet 110 and exiting the gas separator through the outlet 120 without passing through the inlet channel 310, refer to... Figure 2 In some embodiments of the present invention, the gas-liquid separator further includes a sealing member 600 disposed within the cup body 300. The sealing member 600 is hollow, and a transition channel 610 is formed inside the sealing member 600. The upper end of the sealing member 600 is sealed to the inner wall of the upper cover 100 so that the upper end of the transition channel 610 communicates with the gas outlet 120. The lower end of the sealing member 600 is sealed to the upper end of the guide fluid 400 so that the lower end of the transition channel 610 communicates with the upper end of the gas outlet channel 320, thereby enabling the guide fluid to flow through the gas outlet 320. A sealed connection can be achieved between the body 400 and the upper cover 100, so that the gas-liquid mixture entering from the air inlet 110 can only flow along the air inlet channel 310 to the lower end of the guide fluid 400 and enter the separation chamber 330, then enter the air outlet channel 320 and flow to the upper end of the guide fluid 400, then flow through the transition channel 610 inside the seal 600 to the air outlet 120, and finally be discharged from the outside of the gas-liquid separator from the air outlet 120, thereby effectively improving the gas-liquid separation effect of the gas-liquid separator.

[0061] It is understood that, in order to improve the reliability of the sealing connection between the seal 600 and the fluid guide 400, in some embodiments of the present invention, a stepped edge is formed in the inner recess of the outer wall of the lower end of the seal 600, and the seal 600 abuts against the fluid guide 400 through the stepped edge. At this time, the lower end of the seal 600 extends into the fluid guide 400, making the sealing contact surface between the seal 600 and the fluid guide 400 larger, which is beneficial to improving the reliability of the sealing connection between the seal 600 and the fluid guide 400. It should be noted that when the lower end of the seal 600 extends into the guide fluid 400, it can also abut against the filter element 500, thereby limiting the filter element 500 and preventing it from falling out of the air outlet channel 320. When the filter element 500 is a steel wool ball, when the lower end of the seal abuts against the steel wool ball, it can also cause the steel wool ball to expand and further fill the air outlet channel 320, thereby reducing the gap between the steel wool ball and the inner wall of the air outlet channel 320 and improving the collision, cooling and deflection effect of the airflow and the steel wool ball.

[0062] It is understood that in some embodiments of the present invention, the transition channel 610 includes a first channel and a second channel. The end of the first channel opposite to the second channel is connected to the air outlet 120, and the end of the second channel opposite to the first channel is connected to the air outlet channel 320. The inner diameter of the first channel is larger than the inner diameter of the second channel, so that when the airflow enters the second channel from the air outlet channel 320 and then enters the first channel, the larger inner diameter of the first channel helps to reduce the airflow speed, so that the airflow speed when discharged from the air outlet 120 can be reduced to a more suitable range.

[0063] Understandably, in order to prevent steel wires or other debris in the air outlet 320 from entering the transition channel 610 and finally being discharged from the air outlet 120 into the subsequent pipeline, in some embodiments of the present invention, the gas-liquid separator 1000 further includes a filter screen 800. The filter screen 800 is disposed between the filter element 500 and the seal 600. The filter screen 800 can intercept steel wires or other debris, preventing the debris from having an adverse effect on components such as the proportional valve 4000 in the subsequent pipeline after being discharged from the air outlet 120.

[0064] Understandably, in order to securely install the fluid guide 400 inside the cup body 300, in some embodiments of the present invention, the fluid guide 400 is inserted into the cup body 300 by interference fit during installation, so that the outer wall of the heat sink 420 abuts against the inner wall of the cup body 300, thereby limiting the installation of the fluid guide 400 inside the cup body 300. Specifically, during installation, according to the rotation direction of the heat sink 420, the fluid guide 400 is screwed into the cup body 300 in the opposite direction to the rotation direction of the heat sink 420. At this time, the fluid guide 400 can be installed into the cup body 300 more smoothly, and the end of the heat sink 420 can fully abut against the inner wall of the cup body 300. On the one hand, the installation of the fluid guide 400 is faster and more secure, and on the other hand, the heat of the fluid guide 400 can be transferred to the cup body 300 more quickly through the heat sink 420, and then dissipated to the outside by the cup body 300.

[0065] It is understood that in other embodiments of the present invention, the fluid guide 400 can also be installed inside the cup body 300 in other ways. For example, the fluid guide 400 can be connected to the lower end of the sealing member 600 through a connector. In this case, the outer wall of the heat sink 420 does not contact the inner wall of the cup body 300, thereby forming a gap between them. This facilitates the flow of the gas-liquid mixture within the gap and allows the liquid adhering to the inner wall of the cup body 300 to flow smoothly to the separation chamber 330 below, thereby reducing the amount of liquid residue on the inner wall of the cup body 300. Of course, the fluid guide 400 and the cup body 300 can also be connected by a heat-conducting component. The heat-conducting component can transfer the heat of the fluid guide 400 to the cup body 300 and dissipate it to the outside. The heat-conducting component can be made of aluminum, copper, or other materials with good thermal conductivity.

[0066] It is understandable that the gas-liquid separator may vibrate during operation. To reduce the impact of vibration on the seal between the guide fluid 400 and the upper cover 100, refer to... Figure 2 In some embodiments of the present invention, the gas-liquid separator further includes an elastic element 700, which is disposed within the cup body 300. The upper end of the elastic element 700 abuts against the lower end of the guide fluid 400, and the lower end of the elastic element 700 abuts against the inner wall of the cup body 300, thereby allowing the guide fluid 400 to adhere tightly to the sealing element 600 under the action of the elastic element 700. When the gas-liquid separator vibrates, the elastic element 700 can buffer the vibration force, allowing the guide fluid 400, the sealing element 600, and the upper cover 100 to remain tightly connected, thus helping to maintain the sealing performance between the guide fluid 400 and the upper cover 100. Of course, the guide fluid 400 can also be pressed against the lower end of the sealing element 600 under the action of the elastic element 700, thereby allowing the guide fluid 400 to be installed inside the cup body 300. Specifically, the elastic element 700 can be a compression spring, a spring sheet, or other elastic structural component.

[0067] Reference Figure 6 A negative pressure formation system according to a second aspect of the present invention includes the gas-liquid separator 1000 of the first aspect of the present invention, and further includes a negative pressure component, a proportional valve 4000, a waste gas treatment device 5000, a waste liquid recovery device 7000, and a vacuum pump 6000. The negative pressure component includes a negative pressure cup 2000 and a manifold 3000. The negative pressure cup 2000 is connected to a battery 8000. Under the action of the vacuum pump 6000, the suction port of the negative pressure cup 2000 can generate negative pressure, so that the negative pressure cup 2000 can absorb the battery 8000 during charging. During discharge, the generated electrolyte gas and liquid are separated by multiple negative pressure cups 2000. These cups absorb the electrolyte gas and liquid and input it through manifolds 3000 into the inlet 110 of the gas-liquid separator 1000. The gas-liquid separator 1000 separates the gas-liquid mixture into gas and liquid. The gas exits through outlet 120 and passes through proportional valve 4000 before being fed into waste gas treatment device 5000 for environmental treatment. The liquid exits through drain 210 and enters waste liquid recovery device 7000 for recycling. This negative pressure formation system of the present invention can efficiently separate the gas-liquid mixture through the gas-liquid separator 1000, thereby reducing the amount of liquid entering the proportional valve 4000. This helps maintain the normal and stable operation of the proportional valve 4000, enabling the negative pressure formation system to maintain long-term stable operation.

[0068] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. A gas-liquid separator having an inner cavity, characterized in that: The inner cavity is divided into an air inlet channel, an air outlet channel, and a separation chamber. The gas-liquid separator is provided with an air inlet, an air outlet, and a liquid outlet. The upper end of the air inlet channel is connected to the air inlet, the upper end of the air outlet channel is connected to the air outlet, and the lower end of the separation chamber is connected to the liquid outlet. The lower ends of both the air inlet channel and the air outlet channel are connected to the upper end of the separation chamber. The gas-liquid separator further includes a filter element, which is disposed in the gas outlet channel. The filter element has multiple filter filaments distributed along the gas outlet direction. The filter element is a wire brush or a steel wire ball. If the filter element is a wire brush, the wire brush includes a support roller, the filter wire is a steel wire, the steel wire is disposed on the outer peripheral wall of the support roller, and the outer peripheral wall of the support roller is distributed with multiple layers of steel wire groups, each layer of the steel wire group includes multiple steel wires spaced apart along the circumference of the support roller, and the steel wire groups of adjacent layers are staggered along the axial direction of the support roller; or, the steel wires form a multi-layer steel wire mesh, and the multiple layers of steel wire mesh are sequentially wound around the outer peripheral wall of the support roller. If the filter element is a steel wire ball, the filter wire is wound into a ball shape; The gas-liquid separator also includes a guide fluid disposed in the inner cavity. The guide fluid includes a cylinder and a heat sink. The cylinder has an outlet channel formed inside. The heat sink is connected to the outer wall of the cylinder and located in the inlet channel. The heat sink extends radially along the cylinder and is rotatably disposed around the axis of the cylinder.

2. The gas-liquid separator according to claim 1, characterized in that, The filter wire abuts against the inner wall of the air outlet channel.

3. The gas-liquid separator according to claim 1, characterized in that, The gas-liquid separator further includes an upper cover, a lower cover, and a cup. The upper cover is connected to the upper end of the cup, and the lower cover is connected to the lower end of the cup. The cup, the upper cover, and the lower cover form the inner cavity. The air inlet and the air outlet are located on the upper cover, and the liquid outlet is located on the lower cover. The guide fluid is located inside the cup. The inner cavity between the outer wall of the cylinder and the inner wall of the cup constitutes the air inlet channel. The lower end of the guide fluid, together with the cup and the lower cover, defines the separation cavity.

4. The gas-liquid separator according to claim 3, characterized in that, The gas-liquid separator also includes a sealing element disposed within the cup body. A transition channel is formed inside the sealing element. The upper end of the sealing element is sealed to the inner wall of the upper cover so that the upper end of the transition channel is connected to the gas outlet. The lower end of the sealing element is sealed to the upper end of the guide fluid so that the lower end of the transition channel is connected to the upper end of the gas outlet channel.

5. The gas-liquid separator according to claim 4, characterized in that, The outer wall of the lower end of the seal is recessed to form a stepped edge, and the seal abuts against the fluid guide through the stepped edge.

6. The gas-liquid separator according to claim 4, characterized in that, The transition channel includes a first channel and a second channel. The end of the first channel opposite to the second channel is connected to the air outlet, and the end of the second channel opposite to the first channel is connected to the air outlet channel. The inner diameter of the first channel is larger than the inner diameter of the second channel.

7. The gas-liquid separator according to claim 4, characterized in that, The gas-liquid separator also includes an elastic element disposed in the inner cavity, with the upper end of the elastic element abutting against the lower end of the fluid guide and the lower end of the elastic element abutting against the inner wall of the cup body or the lower cover body.

8. The gas-liquid separator according to claim 4, characterized in that, The gas-liquid separator also includes a filter screen, which is disposed between the filter element and the seal.

9. The gas-liquid separator according to claim 3, characterized in that, The lower cover is provided with an exhaust channel, the upper end of which is provided with a downwardly inclined guide surface, and the drain outlet is located at the lower end of the exhaust channel.

10. A negative pressure formation system, characterized in that, Includes the gas-liquid separator according to any one of claims 1 to 9.

11. The negative pressure formation system according to claim 10, characterized in that, The negative pressure formation system also includes a negative pressure component, a waste gas treatment device, a waste liquid recovery device, and a vacuum pump. The vacuum pump is used to generate negative pressure at the suction port of the negative pressure component. The air inlet of the gas-liquid separator is connected to the negative pressure component, the air outlet of the gas-liquid separator is connected to the waste gas treatment device, and the liquid outlet of the gas-liquid separator is connected to the waste liquid recovery device.

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