A gas-liquid separation and valve integrated module for a battery liquid cooling system

Abstract

The utility model relates to battery heat management technical field, concretely is a kind of gas-liquid separation and valve integrated module for battery liquid cooling system, including integrated seat, integrated seat is opened with liquid inlet hole, liquid outlet hole and exhaust hole, the orifice of liquid outlet hole is equipped with check valve, the orifice of exhaust hole is equipped with exhaust device, exhaust device includes base, gas collecting pipe and exhaust assembly, exhaust assembly includes piston and resistance sleeve, piston top end is equipped with recessed cavity, the cavity bottom center position of recessed cavity is equipped with through-hole, the top of through-hole is covered with baffle, and the top of baffle is elastically supported with spring. The gas-liquid separation and valve integrated module for battery liquid cooling system, by the gas-liquid separation and valve integrated module being set, the gas in cooling liquid in liquid cooling system can be specially collected and directional discharge, avoid gas to stay in liquid cooling pipeline and interfere with cooling liquid flow and heat exchange.

Description

Technical Field

[0001] This utility model relates to the field of battery thermal management technology, specifically to a gas-liquid separation and valve integration module for a battery liquid cooling system. Background Technology

[0002] Battery liquid cooling systems are a common heat dissipation solution in the field of new energy batteries. They efficiently remove the heat generated by the battery during operation through coolant circulation, maintaining stable battery temperature and ensuring its performance and lifespan. Gas-liquid separation and valves are important components of this system. Gas-liquid separation separates gases mixed in with the coolant, ensuring the heat exchange efficiency of the coolant; valves are responsible for regulating the flow path and flow rate. The two work together to provide fundamental support for the stable operation of the battery liquid cooling system and are key links in ensuring the system's heat dissipation effect and operational reliability.

[0003] Utility model patent CN222168487U discloses a liquid-cooled battery pack, which includes battery cells and multiple liquid-cooling components. Each liquid-cooling component includes multiple serpentine liquid-cooling plates, each with multiple first arc-shaped surfaces on one side, forming first grooves. The first grooves of adjacent liquid-cooling plates within the same component are arranged opposite each other to form first cell slots, which are used to insert battery cells. The battery cells in this liquid-cooled battery pack can exchange heat effectively with the liquid-cooling plates, exhibiting excellent heat dissipation performance.

[0004] The liquid-cooled battery pack lacks a dedicated treatment structure for gases mixed in with the coolant, which causes the gas accumulated in the coolant during circulation to easily remain in the liquid cooling plate or manifold, interfering with the smooth flow and heat exchange of the coolant. In view of this, we propose a gas-liquid separation and valve integration module for battery liquid cooling systems. Utility Model Content

[0005] The purpose of this invention is to provide a gas-liquid separation and valve integration module for a battery liquid cooling system, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: A gas-liquid separation and valve integration module for a battery liquid cooling system includes an integrated base. The integrated base has a liquid inlet hole on its left end face, a liquid outlet hole on its front end face, and a vent hole on its top end face. A one-way valve is fixedly installed at the opening of the liquid outlet hole, and a venting device is assembled at the opening of the vent hole. The venting device is used to collect and discharge the gas mixed in the coolant. The exhaust device includes a base fixedly installed at the exhaust port opening, a gas collecting pipe threaded to the top of the base, and an exhaust assembly coaxially assembled inside the gas collecting pipe. The gas collecting pipe is a transparent tubular structure. The exhaust assembly includes a piston coaxially sleeved inside the gas collecting pipe and a retaining sleeve fixedly installed at the top of the piston. A concave cavity is opened at the top of the piston, and a through hole is opened at the center of the bottom of the concave cavity. A plug plate is covered at the top of the through hole, and a spring is elastically supported at the top of the plug plate. A base plate is integrally formed at the bottom end of the retaining sleeve. The base plate is fixedly connected to the top end face of the piston. Several through holes are opened in the middle area of ​​the base plate, and the through holes are connected to the concave cavity. When the retaining sleeve is pressed down, the retaining sleeve synchronously drives the piston to move downward along the axial direction of the gas collecting pipe, which increases the pressure inside the gas collecting pipe. This causes the internal gas to generate upward thrust, overcome the elastic force of the spring, and push open the plug plate, thereby realizing gas discharge.

[0007] Preferably, the liquid inlet, liquid outlet, and vent are interconnected inside the integrated base, and a protruding tube is integrally formed at the bottom end of the base, which is fixedly connected to the inside of the vent opening by a threaded connection. This design ensures smooth coolant circulation and gas flow, while the threaded fit enhances the connection stability between the base and the integrated base, reducing the possibility of leakage.

[0008] Preferably, the top of the base is provided with an internally threaded mounting hole, and the outer circumferential surface of the bottom end of the gas collecting pipe is machined with an external thread, and the external thread forms a threaded connection with the mounting hole. In this design, the threaded fit facilitates the disassembly and assembly of the gas collection pipe, providing convenience for subsequent maintenance or replacement, while reducing assembly complexity.

[0009] Preferably, the gas collecting pipe is a hollow tubular structure with both its top and bottom ends being open. The inner wall of the top end of the gas collecting pipe is integrally formed with an inner convex edge protruding towards its axis. The sleeve passes through the inner side of the inner convex edge, and the inner diameter of the inner convex edge is smaller than the outer diameter of the piston. In this configuration, the inner convex edge provides axial restraint to the piston, preventing it from detaching upwards from the gas collection pipe and ensuring stable assembly of the exhaust components.

[0010] Preferably, the bottom end of the through hole is connected to the internal cavity of the gas collecting pipe. On the side wall of the concave cavity, a number of side grooves are arranged in a circular array with the axis of the concave cavity as the center. The length direction of the side grooves is parallel to the axis direction of the piston, and the length dimension of the side grooves is consistent with the depth dimension of the concave cavity. In this configuration, after the side groove ensures the blocking plate is opened, the through hole and the area above the concave cavity are smoothly connected, avoiding obstruction of gas flow.

[0011] Preferably, the blocking plate is a circular sealing element made of rubber. The bottom end of the spring abuts against the top end face of the blocking plate, and the top end of the spring abuts against the bottom surface of the base plate. The spring is always in a pre-compressed state. Under the action of the pre-tightening elastic force of the spring, the blocking plate always presses against the top opening of the sealing through hole. In this design, the rubber material enhances the sealing performance of the plug plate, and the elasticity of the pre-compressed spring ensures a tight seal of the through hole when not venting, preventing coolant leakage.

[0012] Preferably, when the internal pressure of the gas collecting pipe increases, causing the thrust generated by the gas to overcome the spring force and push the plug plate upward, the through hole and the concave cavity area located above the plug plate form a communication channel through the side groove, so that the gas can be discharged sequentially through the through hole, the side groove, the concave cavity and the through hole. This setup creates a complete gas emission channel, allowing the gas in the gas collection pipe to be discharged in a directional and orderly manner without the need for additional power, and the mechanical structure operates reliably.

[0013] Preferably, a pair of oppositely arranged protrusions are fixedly provided on the outer peripheral surface of the top end of the sleeve, and the protrusions are used to limit the downward extension stroke of the sleeve into the gas collecting pipe. This setting prevents the piston from colliding with the base or the spring from moving too far downwards, ensuring the safe operation of the device.

[0014] Compared with the prior art, the beneficial effects of this utility model are: 1. The gas-liquid separation and valve integration module for battery liquid cooling system enables the gas in the coolant of the liquid cooling system to be specially collected and directionally discharged, avoiding the gas from stagnating in the liquid cooling pipeline and interfering with the flow of coolant and heat exchange. 2. The gas-liquid separation and valve integration module for battery liquid cooling system integrates the gas-liquid separation function with the one-way valve and exhaust component in the same integrated base, reducing the scattered placement of functional components, reducing the assembly complexity of the liquid cooling system, and reducing the number of pipeline connection nodes, thereby reducing the potential risk of coolant leakage. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the integrated base in this utility model; Figure 3 This is an exploded view of the exhaust device in this utility model; Figure 4 This is an exploded view of the exhaust assembly in this utility model; Figure 5 This is a schematic diagram of the bottom structure of the bushing in this utility model; The meanings of the labels in the diagram are as follows: 100. Integrated base; 110. Liquid inlet; 120. Liquid drain; 130. Vent. 200. Check valve; 300. Exhaust device; 310. Base; 311. Protruding tube; 312. Mounting hole; 320. Air collection tube; 321. Inner protruding edge; 330. Exhaust assembly; 331. Piston; 3311. Cavity; 3312. Through hole; 3313. Side groove; 3314. Blocking plate; 3315. Spring; 3316. Sealing ring; 332. Abutment sleeve; 3321. Base plate; 3322. Through hole; 3323. Protruding plate. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. 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 skilled in the art without creative effort are within the protection scope of the present utility model.

[0017] Please see Figures 1-5 A gas-liquid separation and valve integration module for a battery liquid cooling system includes an integration base 100. The integration base 100 has a liquid inlet 110 on its left end face, a liquid drain 120 on its front end face, and a vent 130 on its top end face. The liquid inlet 110 provides an entry channel for coolant, and the liquid drain 120 provides a path for coolant discharge. The three holes are interconnected inside the integration base 100 to ensure smooth coolant circulation. A one-way valve 200 is fixedly installed at the opening of the liquid drain 120. The one-way valve 200 prevents coolant backflow and maintains stable pressure within the liquid cooling system. An venting device 300 is installed at the opening of the vent 130. The venting device 300 collects and discharges gases mixed in with the coolant, specifically preventing gas from stagnating in the liquid cooling pipeline and ensuring stable cooling performance.

[0018] like Figure 2 and Figure 3As shown, in this utility model, the exhaust device 300 includes a base 310 fixedly installed at the opening of the exhaust port 130, a gas collecting pipe 320 threadedly connected to the top of the base 310, and an exhaust assembly 330 coaxially assembled inside the gas collecting pipe 320. A protruding tube 311 is integrally formed at the bottom end of the base 310. The protruding tube 311 is threadedly fixedly connected to the inside of the opening of the exhaust port 130, improving the connection stability between the base 310 and the integrated base 100 and reducing the possibility of coolant leakage. A mounting hole 312 with internal threads is provided at the top of the base 310. An external thread is machined on the outer circumferential surface of the bottom end of the gas collecting pipe 320, and a threaded connection is formed between the external thread and the mounting hole 312. The threaded connection facilitates the disassembly and assembly of the gas collecting pipe 320, making subsequent maintenance or replacement easier, while also reducing assembly difficulty.

[0019] like Figure 3 and Figure 4 As shown, specifically, the gas collecting pipe 320 is a transparent hollow tubular structure with open top and bottom. The transparent material allows for direct observation of the internal gas accumulation, enabling users to determine whether venting is needed without disassembly, thus improving ease of use. The inner wall of the top of the gas collecting pipe 320 has an integrally formed inner convex edge 321 protruding towards its axis. The sleeve 332 moves through the inside of the inner convex edge 321. The inner diameter of the inner convex edge 321 is smaller than the outer diameter of the piston 331, which axially limits the piston 331, preventing it from detaching upwards from the gas collecting pipe 320 and ensuring the assembly stability of the exhaust assembly 330.

[0020] like Figures 3-5 As shown, the exhaust assembly 330 further includes a piston 331 coaxially sleeved inside the gas collecting pipe 320 and a retaining sleeve 332 fixedly installed on the top of the piston 331. A cavity 3311 is formed at the top of the piston 331, providing installation space for the spring 3315 and the blocking plate 3314, while also reserving a gas flow channel. A through hole 3312 is formed at the center of the bottom of the cavity 3311, serving as a key path for gas to enter the cavity 3311 and ensuring directional gas flow. A base plate 3321 is integrally formed at the bottom end of the retaining sleeve 332. The base plate 3321 is fixedly connected to the top end face of the piston 331, achieving a stable connection between the two and ensuring that pressing the retaining sleeve 332 synchronously drives the piston 331 to move. Several through holes 3322 are formed in the middle area of ​​the base plate 3321, which communicate with the cavity 3311, providing a final path for gas discharge, allowing the gas to smoothly exit the exhaust device 300. A sealing ring 3316 is embedded on the outer circumferential surface of the piston 331. The sealing ring 3316 increases the sealing between the piston 331 and the inner wall of the gas collecting pipe 320 to prevent leakage.

[0021] like Figure 4As shown, a plug plate 3314 is provided at the top of the through hole 3312. The plug plate 3314 is a circular plate-shaped sealing element made of rubber. Rubber has good sealing performance and can tightly fit the top opening of the through hole 3312 to prevent coolant leakage. A spring 3315 is elastically supported at the top of the plug plate 3314. The bottom end of the spring 3315 abuts against the top end face of the plug plate 3314, and the top end of the spring 3315 abuts against the bottom surface of the base plate 3321. The spring 3315 is always in a pre-compressed state. Under the pre-tightening force of the spring 3315, the plug plate 3314 always presses tightly against the top opening of the through hole 3312. The pre-tightening force ensures the sealing reliability in the non-venting state, and the spring force of the spring 3315 can be adjusted according to requirements to adapt to different pressure conditions.

[0022] like Figures 3-5 As shown, it is worth noting that the bottom end of the through hole 3312 is connected to the internal cavity of the gas collecting pipe 320. On the side wall of the concave cavity 3311, several side grooves 3313 are arranged in a circular array with the axis of the concave cavity 3311 as the center. The length direction of the side grooves 3313 is parallel to the axis direction of the piston 331, and the length dimension of the side grooves 3313 is consistent with the depth dimension of the concave cavity 3311. This ensures that after the blocking plate 3314 is pushed open, the through hole 3312 can smoothly communicate with the area above the concave cavity 3311 through the side grooves 3313, avoiding obstruction of gas flow. When the sleeve 332 is pressed down, the sleeve 332 simultaneously drives the piston 331 to move downward along the axial direction of the gas collecting pipe 320, causing the pressure inside the gas collecting pipe 320 to increase. This pressing action can quickly compress the internal space of the gas collecting pipe 320, causing the gas pressure to gradually increase without the need for additional power. This causes the internal gas to generate upward thrust and overcome the elastic force of the spring 3315 to open the blocking plate 3314. At this time, the through hole 3312 and the concave cavity 3311 area located above the blocking plate 3314 form a communication channel through the side groove 3313. The gas can be discharged sequentially through the through hole 3312, the side groove 3313, the concave cavity 3311 and the through hole 3322, realizing active gas discharge. The whole process is completed by mechanical structure, which has high reliability.

[0023] like Figure 5 As shown, it is worth noting that a pair of opposing protrusions 3323 are fixedly provided on the outer circumferential surface of the top end of the sleeve 332. The protrusions 3323 are used to limit the downward extension stroke of the sleeve 332 into the gas collecting pipe 320, which can prevent the piston 331 from moving down too far and colliding with the base 310, or causing the spring 3315 to be over-compressed and damaged, thus ensuring the safety and service life of the device.

[0024] In this embodiment, the gas-liquid separation and valve integration module for the battery liquid cooling system operates as follows: First, the coolant enters the internal channel through the inlet hole 110 of the integrated base 100, and then flows out through the drain hole 120. The one-way valve 200 prevents the coolant from flowing back. During the circulation process, the gas in the coolant, due to its lower density, naturally rises to the exhaust hole 130 and enters the gas collection pipe 320 of the exhaust device 300. Then, after observing through the transparent gas collection pipe 320 that a certain amount of gas has accumulated, the protrusion 3323 of the abutment sleeve 332 is manually pressed down. The abutment sleeve 332 drives the piston 331 along the gas collection pipe 320. The axial downward movement compresses the internal space of the gas collecting pipe 320, increasing the pressure. Then, the increased pressure generates an upward thrust, overcoming the pre-tightening force of the spring 3315 and opening the blocking plate 3314. The gas enters the concave cavity 3311 through the through hole 3312, and then diffuses to the area above the concave cavity 3311 through the side groove 3313. Finally, the gas is discharged from the exhaust device 300 through the through hole 3322 of the bottom plate 3321. After the exhaust is completed, the abutment tube 332 is released, the spring 3315 returns to its deformation, pushes the blocking plate 3314 to reset and reseals the through hole 3312, and the device returns to the sealed state, continuing to collect gas from the coolant.

[0025] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A gas-liquid separation and valve integration module for a battery liquid cooling system, characterized in that: The system includes an integrated base (100), which has a liquid inlet (110) on its left end face, a liquid outlet (120) on its front end face, and a vent (130) on its top end face. A one-way valve (200) is fixedly installed at the opening of the liquid outlet (120), and a venting device (300) is installed at the opening of the vent (130). The venting device (300) is used to collect and discharge the gas mixed in the coolant. The exhaust device (300) includes a base (310) fixedly installed at the opening of the exhaust hole (130), an air collecting pipe (320) connected to the top of the base (310) by a thread, and an exhaust assembly (330) coaxially assembled inside the air collecting pipe (320). The air collecting pipe (320) is a transparent tubular structure. The exhaust assembly (330) includes a piston (331) coaxially sleeved inside the air collecting pipe (320) and a bushing (332) fixedly installed at the top of the piston (331). The top of the piston (331) is provided with a cavity (3311), and a through hole (3312) is provided at the center of the bottom of the cavity (3311). The top of the through hole (3312) is covered with a plug plate (3314). The top of the blocking plate (3314) is elastically supported by a spring (3315), and the bottom of the abutment sleeve (332) is integrally formed with a base plate (3321). The base plate (3321) is fixedly connected to the top end face of the piston (331). Several through holes (3322) are opened in the middle area of ​​the base plate (3321). The through holes (3322) are connected to the cavity (3311). When the abutment sleeve (332) is pressed down, the abutment sleeve (332) synchronously drives the piston (331) to move downward along the axial direction of the gas collecting pipe (320), so that the pressure inside the gas collecting pipe (320) increases, thereby causing the internal gas to generate upward thrust and overcome the elastic force of the spring (3315) and push open the blocking plate (3314) to realize gas discharge.

2. The gas-liquid separation and valve integration module for a battery liquid cooling system according to claim 1, characterized in that: The liquid inlet (110), liquid outlet (120) and vent (130) are interconnected inside the integrated base (100). The bottom end of the base (310) is integrally formed with a protruding tube (311), which is fixedly connected to the inside of the vent (130) opening by threaded connection.

3. The gas-liquid separation and valve integration module for a battery liquid cooling system according to claim 1, characterized in that: The top of the base (310) is provided with an installation hole (312) with an internal thread on the inner wall, and the outer circumferential surface of the bottom end of the gas collecting pipe (320) is machined with an external thread, and the external thread forms a threaded connection with the installation hole (312).

4. The gas-liquid separation and valve integration module for a battery liquid cooling system according to claim 1, characterized in that: The gas collecting pipe (320) is a hollow tubular structure with open top and bottom ends. The inner wall of the top end of the gas collecting pipe (320) is integrally formed with an inner convex edge (321) protruding towards its axis. The sleeve (332) moves through the inner side of the inner convex edge (321). The inner diameter of the inner convex edge (321) is smaller than the outer diameter of the piston (331).

5. The gas-liquid separation and valve integration module for a battery liquid cooling system according to claim 1, characterized in that: The bottom end of the through hole (3312) is connected to the internal cavity of the gas collecting pipe (320). On the side wall of the concave cavity (3311), a number of side grooves (3313) are arranged in a ring array with the axis of the concave cavity (3311) as the center. The length direction of the side grooves (3313) is parallel to the axis direction of the piston (331), and the length dimension of the side grooves (3313) is consistent with the depth dimension of the concave cavity (3311).

6. The gas-liquid separation and valve integration module for a battery liquid cooling system according to claim 1, characterized in that: The blocking plate (3314) is a circular sealing element made of rubber. The bottom end of the spring (3315) abuts against the top end face of the blocking plate (3314), and the top end of the spring (3315) abuts against the bottom surface of the base plate (3321). The spring (3315) is always in a pre-compressed state. Under the pre-tightening force of the spring (3315), the blocking plate (3314) always presses against the top opening of the sealing through hole (3312).

7. The gas-liquid separation and valve integration module for a battery liquid cooling system according to claim 5, characterized in that: When the internal pressure of the gas collecting pipe (320) increases, the thrust generated by the gas overcomes the elastic force of the spring (3315) and pushes the plug plate (3314) upward. The through hole (3312) and the cavity (3311) area located above the plug plate (3314) form a communication channel through the side groove (3313), so that the gas can be discharged in sequence through the through hole (3312), the side groove (3313), the cavity (3311) and the through hole (3322).

8. The gas-liquid separation and valve integration module for a battery liquid cooling system according to claim 1, characterized in that: A pair of opposing convex plates (3323) are fixedly provided on the outer peripheral surface of the top end of the sleeve (332). The convex plates (3323) are used to limit the downward extension stroke of the sleeve (332) into the gas collecting pipe (320).

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