Leakage-proof sealing assembly of battery immersion cooling system

Abstract

The present invention relates to the technical field of battery thermal management, and discloses a battery immersion cooling system liquid leakage prevention sealing assembly, the battery immersion cooling system liquid leakage prevention sealing assembly comprises a bottom shell, a top shell and a sealing mechanism, the bottom shell and the top shell are connected through a flange structure, the contact surface is provided with double concentric annular grooves, and a first sealing strip and a second sealing strip are respectively embedded in the double concentric annular grooves to form a double sealing barrier; an observation mechanism is arranged at the top end of the top shell and comprises a shell, a transparent plate and a sliding assembly, an internal gear is driven through a rotary knob, double racks staggered up and down are driven to move reversely, and then the two blocking plates are controlled to be stably opened and closed along the guide rails to expose or shield the transparent plate. The flange structure is arranged at the joint of the bottom shell and the top shell and matched with the dual-seal design, so that the risk of leakage of cooling liquid is greatly reduced, meanwhile, by combining with the mechanically-driven observation window structure, convenient and visual monitoring is achieved without damaging the sealing environment of the box body, and operation is easy, convenient, safe and reliable.

Description

Technical Field

[0001] This invention relates to the field of battery thermal management technology, and in particular to a leak-proof sealing assembly for a battery immersion cooling system. Background Technology

[0002] With the rapid development of new energy vehicles and energy storage technologies, the power density and energy density of battery systems are constantly increasing, and the resulting heat dissipation problem is becoming increasingly serious. Immersion liquid cooling technology, because the coolant is in direct contact with the battery cell, has extremely high heat exchange efficiency and has gradually become the mainstream solution for heat dissipation of batteries with high heat load. However, immersion cooling systems have extremely high requirements for the sealing of the enclosure, because the cooling media such as electronic fluorinated liquids used are not only expensive, but also have extremely strong permeability. Once a leak occurs, it will not only cause economic losses, but also cause safety accidents.

[0003] Existing battery immersion cooling enclosures typically use a single flat gasket or sealing ring for sealing. During long-term use, this structure is prone to fatigue gaps at the seal due to internal pressure fluctuations caused by battery charging and discharging heat, leading to liquid leakage. In addition, to ensure strength and sealing, existing enclosures mostly adopt a fully enclosed metal structure. When maintenance personnel need to check the internal coolant level, color change, or cell appearance, they often need to remove all the fastening bolts of the top cover and open the enclosure. This process is not only time-consuming and labor-intensive, but more seriously, it will damage the original sealed environment, allowing external moisture and dust to enter the enclosure and contaminate the coolant, increasing the difficulty and cost of later maintenance.

[0004] Therefore, this invention proposes a leak-proof sealing assembly for a battery immersion cooling system to address the shortcomings of the prior art, such as insufficient sealing reliability of the battery immersion cooling box and the inability to conveniently observe the internal state without damaging the seal. Summary of the Invention

[0005] In view of the problems that existing battery immersion cooling system enclosures generally have simple sealing structures, which are prone to expensive coolant leakage due to internal pressure fluctuations during long-term use, and the fully enclosed metal shell design makes it difficult for maintenance personnel to intuitively monitor the internal cell status and coolant level without damaging the sealed environment, and the disassembly and assembly are cumbersome and prone to external contamination, this invention aims to provide a leak-proof sealing component for battery immersion cooling systems with an improved structure that can effectively solve the above problems.

[0006] The present invention provides a leak-proof sealing assembly for a battery immersion cooling system, comprising: a bottom shell, a top shell mounted on the top of the bottom shell, a sealing mechanism, and an observation mechanism mounted on the top of the top shell.

[0007] The bottom shell and the top shell are provided with a flange structure at their contact surfaces. The bottom shell and the top shell are connected and fixed by the flange structure. An annular groove 1 and an annular groove 2 are formed on the contact surfaces of the bottom shell and the top shell. An annular groove 1 is located outside an annular groove 2. A sealing strip 1 is placed inside an annular groove 1, and a sealing strip 2 is placed inside an annular groove 2. The sealing strip 1 and the sealing strip 2 are fixed inside annular groove 1 and annular groove 2 by the connection of the flange structure, thereby forming a double sealing barrier.

[0008] Furthermore, an observation mechanism is installed at the top of the top shell. The observation mechanism includes an outer shell installed at the top of the top shell and a transparent plate embedded in the top shell, through which a viewing window is provided.

[0009] Preferably, the top of the top shell is provided with a sliding assembly, the sliding assembly including a guide rail fixed to the top of the top shell, a barrier plate slidably connected on the guide rail, the barrier plate being located above the transparent plate, for physically shielding and protecting the transparent plate.

[0010] Preferably, both ends of the guide rail are fixedly provided with limiting plates, which are used to limit the travel of the barrier plate along the guide rail and prevent the barrier plate from detaching from the guide rail during the sliding process.

[0011] Preferably, a knob is rotatably mounted on the outer casing, and a gear is connected to the bottom end of the knob. The gear is located inside the outer casing, and rotating the knob can drive the gear to rotate, providing a power source for opening and closing the barrier plate.

[0012] Preferably, the housing is provided with two racks that mesh with the gear. The two racks are located at the upper and lower ends of the gear and are staggered, so as to convert the rotational motion of the gear into two linear motions in opposite directions.

[0013] Preferably, there are two barrier plates, and the two racks are fixedly connected to the two barrier plates respectively. The rotation of the knob drives the gear to rotate, and the gear drives the two racks to move, thereby driving the two barrier plates to slide to both sides along the guide rail to expose the transparent plate, or slide to the middle to close and cover the transparent plate.

[0014] Preferably, the second sealing strip serves as an inner protective structure to prevent contact with the liquid coolant inside the bottom shell, while the first sealing strip serves as the outermost protective structure to provide secondary protection in case of leakage from the second sealing strip, thereby constructing a highly reliable leak-proof system.

[0015] The present invention has the following beneficial effects: 1. This invention solves the problem of expensive and permeable liquid coolant leakage caused by aging or pressure fluctuations due to the single-layer seal of the existing battery immersion cooling system by setting a flange structure at the connection between the bottom shell and the top shell and opening double concentric annular grooves on the contact surface in conjunction with double sealing strips. It achieves a double insurance effect of first-layer isolation through inner sealing strip and second-layer protection through outer sealing strip, which greatly improves the sealing reliability and safety of the battery box.

[0016] 2. This invention solves the problem that existing fully enclosed metal shells cannot observe the internal battery cells and liquid level status without disassembling the top cover and disrupting the sealed environment by setting an observation mechanism above the top shell and using a gear and rack transmission assembly to drive the barrier plate to open and close above the transparent plate. It achieves the technical effect of quickly opening the window for visual monitoring by simply turning the knob while maintaining the integrity of the box's seal, and closing the barrier plate to shield and protect the transparent plate after monitoring is completed.

[0017] 3. This invention solves the problems of unstable opening of the observation window and cumbersome operation by setting up a transmission structure with double racks and single gears meshing in a staggered manner, combined with the restriction of guide rails and limiting plates. It achieves the technical effect of driving two blocking plates to slide smoothly in opposite directions synchronously with a single knob, which is convenient and labor-saving, and has a compact structure that occupies little space. Attached Figure Description

[0018] Figure 1 This is a three-dimensional schematic diagram of the anti-leakage sealing assembly for the battery immersion cooling system proposed in this invention; Figure 2 This is a schematic diagram of the outer casing of the anti-leakage sealing assembly for the battery immersion cooling system proposed in this invention; Figure 3 for Figure 2 Enlarged view of point A in the middle.

[0019] Legend: 1. Bottom shell; 2. Top shell; 3. Sealing mechanism; 31. Annular groove one; 32. Annular groove two; 33. Sealing strip one; 34. Sealing strip two; 35. Flange structure; 4. Observation mechanism; 41. Outer shell; 42. Sliding assembly; 421. Guide rail; 422. Barrier plate; 423. Limiting plate; 43. Knob; 44. Gear; 45. Rack; 46. Transparent panel. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. Example

[0021] Reference Figures 1 to 3 This invention provides a leak-proof sealing assembly for a battery immersion cooling system, which aims to solve the structural defects of existing battery immersion cooling systems, such as insufficient casing sealing which easily leads to expensive coolant leakage and difficulty in visually monitoring the internal cell status without damaging the sealed environment.

[0022] like Figure 1 and Figure 2 As shown, the battery immersion cooling system anti-leakage sealing assembly includes a bottom shell 1 and a top shell 2 that covers the top of the bottom shell 1. The bottom shell 1 is used to install the battery cells and form an inner cavity to contain the coolant, serving as the basic load-bearing component of the entire device. The top shell 2 is used to seal the top opening of the bottom shell 1. The two together form a complete battery box structure.

[0023] It also includes a sealing mechanism 3 and an observation mechanism 4. The sealing mechanism 3 is located at the connection between the bottom shell 1 and the top shell 2 to ensure sealing performance, and the observation mechanism 4 is located above the top shell 2 to achieve visual monitoring.

[0024] Reference Figure 2 The top edge of the bottom shell 1 and the bottom edge of the top shell 2 both extend outward to form a flange structure 35. The bottom shell 1 and the top shell 2 are fixedly connected by bolt assemblies passing through the flange structure 35. On the contact surface where the bottom shell 1 and the top shell 2 are fitted together by the flange structure 35, there are concentrically distributed annular grooves 31 and 32. The annular groove 31 is located outside the annular groove 32, and a sealing strip 33 is embedded inside the annular groove 31. A sealing strip 34 is embedded inside the annular groove 32. Both the sealing strip 33 and the sealing strip 34 are made of elastic rubber. When the bottom shell 1 and the top shell 2 are pressed together, they undergo elastic deformation to fill the mating gap.

[0025] Sealing strip 2 34, as the inner protective structure, directly contacts the liquid coolant inside the bottom shell 1 and provides the first layer of protection. Sealing strip 1 33, as the outermost protective structure, can provide secondary protection should sealing strip 2 34 leak accidentally. This double protection greatly reduces the risk of liquid coolant leakage. Meanwhile, an observation mechanism 4 is installed at the top of the top shell 2. The observation mechanism 4 includes an outer shell 41 fixed to one side of the top surface of the top shell 2 and an observation port opened on the top shell 2. A transparent plate 46 is sealed and embedded in the observation port by a sealing layer or a sealing gasket. The transparent plate 46 is made of tempered glass or acrylic sheet and is used to provide a viewing window while ensuring the airtightness of the top shell 2.

[0026] The top of the top shell 2 is also provided with a sliding assembly 42. The sliding assembly 42 includes a guide rail 421 fixedly connected to the top surface of the top shell 2 and extending along the edge of the observation port, and a barrier plate 422 slidably connected to the guide rail 421. The barrier plate 422 is located above the transparent plate 46. The bottom of the barrier plate 422 is provided with a groove that matches the guide rail 421. The guide rail 421 restricts the movement path of the barrier plate 422, so that it can only slide back and forth in a specific direction. Limiting plates 423 are fixedly connected to both ends of the guide rail 421. The limiting plates 423 protrude from the surface of the guide rail 421 and are located at the end of the sliding path of the barrier plate 422 to limit the sliding stroke of the barrier plate 422 and prevent it from falling off.

[0027] A knob 43 is rotatably connected inside the housing 41 via a bearing. One end of the knob 43 inside the housing 41 is coaxially fixed to a gear 44. The operating end of the knob 43 passes through the top surface of the housing 41 and extends to the outside of the housing 41. The housing 41 has an L-shaped structure and covers the gear 44. The housing 41 not only serves to prevent dust and protect the internal transmission components, but also covers part of the area where the barrier plate 422 is in the storage state, making the overall appearance neater.

[0028] Reference Figure 3 Gear 44 has two racks 45 meshing with each other on both sides of its diameter. The two racks 45 are staggered in the vertical direction. One rack 45 has its tooth surface facing one side and meshing with the upper part of gear 44, while the other rack 45 has its tooth surface facing the other side and meshing with the lower part of gear 44. Each rack 45 has a baffle plate 422 fixedly connected to the end away from gear 44. There are two baffle plates 422, which are respectively connected to the ends of the two racks 45. When the two baffle plates 422 are closed, their mating edges abut against each other. The total area of ​​the two baffle plates 422 is larger than the area of ​​the transparent plate 46 so as to completely cover the transparent plate 46. This provides physical shielding protection for the transparent plate 46 when not being observed, preventing damage to the transparent plate 46 from external hard objects. It also blocks external light from directly shining into the battery.

[0029] The implementation principle of this application embodiment is as follows: During battery assembly, the battery cell is installed inside the bottom shell 1, and the top shell 2 is installed on the top of the bottom shell 1. The bottom shell 1 and the top shell 2 are pressed and fixed together by the flange structure 35 and the bolt assembly. At this time, the sealing strip 33 inside the annular groove 31 and the sealing strip 34 inside the annular groove 32 are simultaneously compressed and undergo elastic deformation to fill the gap. When liquid coolant is injected into the bottom shell 1 through the liquid inlet, the liquid coolant first contacts the sealing strip 34, which serves as the inner layer of protection. If the sealing strip 34 fails, the outer sealing strip 33 will play a secondary barrier role, thereby achieving a reliable leak-proof seal.

[0030] When it is necessary to observe the inside of the battery, the operator manually rotates the knob 43 located on the top of the outer casing 41. The knob 43 drives the internal gear 44 to rotate. Since the gear 44 simultaneously meshes with the misaligned racks 45 at both ends, the rotational motion of the gear 44 is converted into the two racks 45 moving in opposite directions along a straight line perpendicular to the length of the racks 45. The racks 45 then drive the two baffles 422 to slide open to both sides along the guide rail 421. The baffles 422 slide to the limit plate 423 and are stopped. At this time, the transparent plate 46 is fully exposed, and the operator can observe the inside of the bottom casing 1 through the transparent plate 46. After the observation is completed, the knob 43 is rotated in the opposite direction. The racks 45 drive the two baffles 422 to move in opposite directions along the guide rail 421 until they close, and the transparent plate 46 is covered and protected again.

Claims

1. A leak-proof sealing assembly for a battery immersion cooling system, comprising: A bottom shell (1) and a top shell (2) installed on the top of the bottom shell (1), wherein a sealing mechanism (3) is provided between the bottom shell (1) and the top shell (2). Its features are, A flange structure (35) is provided at the contact surface between the bottom shell (1) and the top shell (2). The bottom shell (1) and the top shell (2) are connected and fixed by the flange structure (35). An annular groove one (31) and an annular groove two (32) are opened on the contact surface. The annular groove one (31) is located outside the annular groove two (32). A sealing strip one (33) is placed inside the annular groove one (31), and a sealing strip two (34) is placed inside the annular groove two (32). The sealing strip one (33) and the sealing strip two (34) are fixed inside the annular groove one (31) and the annular groove two (32) under the connection action of the flange structure (35).

2. The battery immersion cooling system leak-proof sealing assembly according to claim 1, characterized in that, An observation mechanism (4) is installed at the top of the top shell (2). The observation mechanism (4) includes an outer shell (41) installed at the top of the top shell (2) and a transparent plate (46) embedded in the top shell (2).

3. The battery immersion cooling system leak-proof sealing assembly according to claim 2, characterized in that, The top of the top shell (2) is provided with a sliding assembly (42), which includes a guide rail (421) fixed to the top of the top shell (2). A barrier plate (422) is slidably connected on the guide rail (421), and the barrier plate (422) is located above the transparent plate (46).

4. The leak-proof sealing assembly for a battery immersion cooling system according to claim 3, characterized in that, Both ends of the guide rail (421) are fixedly provided with limiting plates (423), which are used to limit the travel of the barrier plate (422) along the guide rail (421).

5. The battery immersion cooling system leak-proof sealing assembly according to claim 3, characterized in that, A knob (43) is rotatably mounted on the outer casing (41), and a gear (44) is connected to the bottom end of the knob (43). The gear (44) is located inside the outer casing (41).

6. The battery immersion cooling system leak-proof sealing assembly according to claim 5, characterized in that, The housing (41) is provided with a rack (45) that meshes with the gear (44). There are two racks (45), and the two racks (45) are located at the upper and lower ends of the gear (44) and are staggered.

7. The battery immersion cooling system leak-proof sealing assembly according to claim 6, characterized in that, There are two barrier plates (422). The two racks (45) are fixedly connected to the two barrier plates (422) respectively. The knob (43) rotates to drive the gear (44) to rotate. The gear (44) drives the two racks (45) to move, thereby driving the two barrier plates (422) to slide to both sides along the guide rail (421) to expose the transparent plate (46).

8. The leak-proof sealing assembly for a battery immersion cooling system according to claim 1, characterized in that, The second sealing strip (34) serves as an inner protective structure to prevent contact with the liquid coolant inside the bottom shell (1), while the first sealing strip (33) serves as the outermost protective structure to provide secondary protection when the second sealing strip (34) leaks.

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