Liquid leakage prevention device and liquid cooling system

Abstract

The utility model discloses a liquid leakage prevention device and a liquid cooling system, and relates to the technical field of battery cooling, the device comprises a heat dissipation structure, the heat dissipation structure comprises a first connector and a second connector which are used for communicating an internal liquid cooling space of the heat dissipation structure with a liquid cooling machine, the first connector is used for being connected with a liquid outlet of the liquid cooling machine, and the second connector is used for being connected with a liquid return opening of the liquid cooling machine; the first valve structure is arranged on the first connector and used for cutting off the first connector when the first connector is detached from the liquid outlet of the liquid cooling machine so as to prevent liquid in the internal liquid cooling space from leaking from the first connector; and the second valve structure is arranged on the second joint and is used for closing the second joint when the second joint is detached from the liquid return port of the liquid cooling machine so as to prevent liquid in the internal liquid cooling space from leaking from the second joint. According to the invention, the valve structure is arranged at the joint where the heat dissipation structure is connected with the liquid cooling machine, so that the effect of preventing liquid in the heat dissipation structure from leaking when the liquid cooling machine is disassembled is achieved, and the safety and convenience of equipment maintenance are improved.

Description

Technical Field

[0001] This application relates to the field of battery cooling technology, and in particular to a leak-proof device and a liquid cooling system. Background Technology

[0002] As the power density of electronic devices and high-power components continues to increase, the heat generated during equipment operation also increases. Traditional air cooling methods can no longer effectively meet the heat dissipation requirements of high heat flux components. Therefore, liquid cooling (water cooling) technology has gradually become the mainstream trend in the field of electronic device heat dissipation. During the actual operation and maintenance of liquid cooling systems, especially during equipment shutdown, purging, or maintenance shutdowns, the coolant inside the liquid cooling system often faces the risk of backflow, flooding, and leakage due to pressure differentials, gravity, or decreased sealing performance. This backflow or leakage not only causes a large amount of liquid residue inside the liquid cooling plate, affecting subsequent equipment maintenance and upkeep, but may also lead to safety hazards such as moisture absorption and short circuits in equipment components, severely reducing equipment reliability and service life.

[0003] In the battery cooling process, existing solutions typically lack effective one-way check structures or active shut-off devices in the liquid pipeline between the liquid cooler and the load to be cooled. This leads to coolant backflow and leakage during equipment shutdown or purging due to pressure differences within the pipeline or aging and failure of the seals. As a result, residual liquid inside the liquid cooling plate cannot be completely removed, and may even cause equipment damage or safety accidents. At the same time, existing technologies lack measures to actively cut off the pipeline, making it easy for coolant backflow and overflow to occur during shutdown or maintenance. This not only increases the difficulty and cost of system maintenance, but also seriously affects the stability and safety of the liquid cooling system.

[0004] The information disclosed in this background section is included only to enhance the understanding of the context of this disclosure, and therefore may contain information that does not constitute relevant technology currently known to those skilled in the art. Utility Model Content

[0005] This application provides a leak-proof device to solve the problem of liquid backflow and leakage during disassembly and maintenance of liquid cooling systems.

[0006] The technical solution adopted in this application is as follows:

[0007] In a first aspect, this application provides a leak-proof device, comprising:

[0008] The heat dissipation structure includes a first connector and a second connector for connecting its internal liquid cooling space to a liquid chiller, wherein the first connector is for connecting to the liquid outlet of the liquid chiller and the second connector is for connecting to the liquid return port of the liquid chiller.

[0009] A first valve structure is provided at the first connector and is used to shut off the first connector when the first connector is disassembled from the liquid outlet of the liquid cooler, so as to prevent the liquid in the internal liquid cooling space from leaking from the first connector.

[0010] The second valve structure, located at the second connector, is used to shut off the second connector when it is disconnected from the return port of the liquid cooler, so as to prevent liquid in the internal liquid cooling space from leaking out of the second connector.

[0011] This application provides valve structures at the first and second joints of the heat dissipation structure. When the connection between the heat dissipation structure and the liquid cooler is disconnected, these valve structures can close the corresponding joint passage, thereby effectively preventing liquid leakage from the joints in the liquid cooling space inside the heat dissipation structure and effectively preventing equipment damage or safety hazards caused by liquid leakage.

[0012] In conjunction with the first aspect, in one alternative implementation, the first valve structure includes at least one one-way valve that allows liquid to flow through the first connector to the heat dissipation structure only.

[0013] The one-way valve automatically enables unidirectional liquid flow. When the first connector is connected to the liquid chiller, the one-way valve automatically opens under liquid pressure, allowing normal liquid flow. When the first connector is disconnected from the liquid chiller's outlet, the one-way valve automatically closes due to the disappearance or reversal of liquid pressure, quickly blocking the outflow of liquid from the internal liquid cooling space of the heat dissipation structure. This method requires no additional manual intervention, is simple and reliable in structure, responds quickly, effectively reduces the risk of leakage, and further improves the safety and convenience of equipment maintenance and disassembly / reassembly processes.

[0014] In conjunction with the first aspect, in one alternative implementation, the first valve structure includes at least one two-way valve.

[0015] And / or, the second valve structure includes at least one two-way valve.

[0016] The bidirectional valve structure enables effective shut-off and opening in both directions, making it suitable for more complex liquid flow conditions. When the first or second connector is removed from the liquid cooler, the bidirectional valve can quickly and effectively seal the pipeline passage, preventing liquid leakage within the liquid cooling space of the heat dissipation structure. Furthermore, using a bidirectional valve can improve system reliability to a certain extent, making it suitable for scenarios in liquid cooling systems requiring frequent disassembly, maintenance, or multi-directional liquid flow control, further enhancing the safety, flexibility, and practicality of the liquid cooling system.

[0017] In conjunction with the first aspect, in one alternative implementation, the two-way valve is a motor-driven ball valve.

[0018] Motor-driven ball valves precisely control the opening and closing of the valve via a motor, enabling rapid and accurate bidirectional switching of liquid flow paths. Compared to ordinary mechanical or manual valves, motor-driven ball valves offer advantages in response speed, control precision, and automation. Furthermore, the ball valve structure itself features low flow resistance, excellent sealing performance, and high reliability; combined with motor drive, remote or automated control is possible, making it particularly suitable for intelligent operation and maintenance scenarios in high-performance liquid cooling systems. This design further enhances the safety, reliability, and ease of operation of liquid cooling systems, reduces the workload and risk of operator error during maintenance, and effectively improves the overall system's practicality and intelligence.

[0019] In conjunction with the first aspect, in one alternative implementation, the first valve structure includes:

[0020] The first valve body is provided with a first external flow channel;

[0021] The first valve core is provided with a first inner flow channel. When the first valve core is in the open state, the first outer flow channel is connected to the first inner flow channel; when the first valve core is in the closed state, the first outer flow channel is blocked by the first valve core.

[0022] A sealing structure is disposed on the outer peripheral surface of the first valve core, and is used to seal the gap between the first inner flow channel and the first outer flow channel when the first valve core is in the closed state.

[0023] This application achieves reliable opening and closing control of a valve by providing a clearly defined first external flow channel on the first valve body and a controllable opening and closing first internal flow channel in the first valve core. When the first valve core is in the open state, the first external flow channel and the first internal flow channel are connected, thereby allowing smooth liquid flow through the valve structure; when the first valve core is in the closed state, it effectively blocks the first external flow channel, preventing liquid flow. Simultaneously, by providing a sealing structure on the outer circumferential surface of the first valve core, when the first valve core is in the closed state, the sealing structure effectively seals the gap between the first internal flow channel and the first external flow channel, preventing liquid leakage and significantly improving the sealing reliability and safety of the valve structure, ensuring that no liquid leakage occurs during disassembly or maintenance.

[0024] In conjunction with the first aspect, in one alternative implementation, the second valve structure includes:

[0025] The second valve body is provided with a second external flow channel;

[0026] The second valve core is provided with a second inner flow channel. When the second valve core is in the open state, the second outer flow channel is connected to the second inner flow channel; when the second valve core is in the closed state, the second outer flow channel is blocked by the second valve core.

[0027] A sealing structure is used to seal the gap between the second inner flow channel and the second outer flow channel when the second valve core is in the closed state.

[0028] This implementation method has the same effect as the implementation method of the first valve structure described above, and will not be repeated here.

[0029] Secondly, this application also provides a liquid cooling system. The liquid cooling system includes a liquid chiller and a leak-proof device as described in the first aspect or any optional implementation thereof.

[0030] The liquid cooling system of this application, by setting a leak-proof device with a valve body, valve core and sealing structure, can achieve precise opening and closing control of the liquid circuit, effectively prevent liquid leakage, and improve the safety, reliability and operational stability of the liquid cooling system maintenance process.

[0031] In conjunction with the second aspect, in one alternative implementation, the first valve structure includes at least one check valve;

[0032] The liquid cooling system also includes an air pump connected in series between the liquid outlet of the liquid chiller and the first connector, which is used to purge the coolant in the pipeline of the liquid cooling system back to the return port of the liquid chiller.

[0033] This application incorporates a one-way valve and an air pump in the liquid cooling system. The one-way valve prevents coolant backflow, and the air pump is positioned between the liquid cooler outlet and the first connector due to the one-way valve. This allows the air pump to smoothly blow the coolant in the pipeline into the heat dissipation device, and then back to the liquid cooler return port, achieving rapid evacuation of the pipeline. This effectively avoids coolant stagnation in the pipeline and prevents the risk of liquid leakage during disassembly or maintenance.

[0034] In conjunction with the second aspect, in one alternative implementation, a filter device is also provided on the connection pipeline between the leak-proof device and the liquid cooler. The filter device is used to filter impurities in the coolant.

[0035] This application filters impurities in the coolant by setting up a filtration device, preventing impurities from clogging or damaging the liquid cooling equipment, thereby significantly improving the safety, reliability and stability of the liquid cooling system, extending the service life of the equipment and reducing maintenance costs.

[0036] In conjunction with the second aspect, in one alternative implementation, the liquid cooling system further includes a drive module connected in series between the liquid outlet of the liquid chiller and the first connector, for driving the coolant to flow within the pipeline.

[0037] This application improves the overall heat exchange efficiency of the liquid cooling system by setting a drive module between the liquid outlet of the liquid chiller and the first connector, thereby driving the coolant to flow in the pipeline and effectively enhancing the power of the coolant circulation, ensuring the stable operation of the cooled equipment.

[0038] For more detailed information on the implementation of liquid cooling systems, please refer to the description of any of the implementation methods in the first aspect above.

[0039] Based on the implementation methods provided in the above aspects, this application can be further combined to provide more implementation methods.

[0040] Other advantages, objectives and features of this application will be partly apparent from the description below, and partly understood by those skilled in the art through study and practice of this application. Attached Figure Description

[0041] To more clearly illustrate the technical solutions in the embodiments or related technologies of this application, the accompanying drawings used in the description of the embodiments or related technologies will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0042] Figure 1 This is a schematic diagram of the structure of a leak-proof device provided in an embodiment of this application;

[0043] Figure 2 This is a schematic diagram of the structure of a liquid cooling system provided in an embodiment of this application. Detailed Implementation

[0044] It should be noted that, in this application, the terms "exemplary" or "for example" are used to indicate that something is being described as an example, illustration, or illustration. Any embodiment or design described as "exemplary" or "for example" in this application should not be construed as being more preferred or advantageous than other embodiments or design solutions. Specifically, the use of terms such as "exemplary" or "for example" is intended to present the relevant concepts in a concrete manner.

[0045] The term "and / or" as used in this application includes any and all combinations of one or more of the associated listed items. In this application, "at least one" means one or more, and "more than one" means two or more. The terms "first," "second," and other ordinal terms used in this application may be used to describe various constituent elements, but these constituent elements are not limited by these terms. The purpose of using these terms is solely to distinguish one constituent element from others and should not be construed as indicating or implying relative importance. For example, without departing from the scope of this application, a first constituent element may be named a second constituent element, and similarly, a second constituent element may be named a first constituent element.

[0046] Each circuit or other component may be described or referred to as "for" performing one or more tasks. In this context, "for" is used to imply a structure by indicating that the circuit / component includes a structure (e.g., a circuit system) that performs one or more tasks during operation. Therefore, even when the specified circuit / component is currently inoperable (e.g., not turned on), it can still be referred to as "for performing that task." Circuits / components used with the term "for" include hardware, such as circuits that perform operations.

[0047] Before introducing the embodiments of this application, the background technology involved in this application will be introduced first.

[0048] In existing technologies, the liquid pipeline between the liquid chiller and the load to be cooled is usually not equipped with an effective one-way check structure or active shut-off device. This leads to backflow and leakage of coolant during equipment shutdown or purging cleaning due to pressure difference in the pipeline or aging and failure of the seals. As a result, residual liquid inside the liquid cooling plate cannot be completely removed, and may even cause equipment damage or safety accidents. At the same time, existing technologies lack measures to actively cut off the pipeline, and coolant backflow and overflow are prone to occur during shutdown or maintenance. This not only increases the difficulty and cost of system maintenance, but also seriously affects the stability and safety of the liquid cooling system.

[0049] In summary, the existing technology lacks an effective backflow prevention or active shut-off device, which makes the liquid cooling system prone to coolant backflow and leakage during shutdown or maintenance, affecting system safety and maintenance convenience. To address these issues, this application provides a leak-proof device and a liquid cooling system that can solve the coolant backflow and leakage problem in existing solutions.

[0050] Please see Figure 1 , Figure 1 A schematic diagram of a leak-proof device provided in an embodiment of this application is shown.

[0051] like Figure 1 As shown, the leak-proof device includes a heat dissipation structure 103, a first valve structure 101, and a second valve structure 102. The heat dissipation structure 103 includes a first connector 1031 and a second connector 1032 for connecting its internal liquid-cooled space to the liquid cooler. It is worth noting that the heat dissipation structure 103 can be, but is not limited to, a liquid-cooled plate, or an integral structure combining a liquid-cooled plate and a battery pack. The first connector 1031 is used to connect to the liquid outlet of the liquid cooler, and the second connector 1032 is used to connect to the liquid return port of the liquid cooler.

[0052] The first valve structure 101 is disposed on the first connector 1031 and is used to shut off the first connector 1031 when it is disassembled from the liquid outlet of the liquid cooler, so as to prevent the liquid in the internal liquid cooling space from leaking from the first connector 1031; the second valve structure 102 is disposed on the second connector 1032 and is used to shut off the second connector 1032 when it is disassembled from the liquid return port of the liquid cooler, so as to prevent the liquid in the internal liquid cooling space from leaking from the second connector 1032.

[0053] For example, when the connector is disassembled from the liquid cooler, the corresponding valve structure automatically shuts off the connector to prevent liquid leakage inside the heat dissipation structure 103, thereby solving the problem of liquid backflow leakage during disassembly.

[0054] In some embodiments, the first valve structure 101 may be designed to include at least one one-way valve that only allows liquid to flow through the first connector to the heat dissipation structure. For example, when the first connector 1031 is connected to the liquid chiller, the one-way valve automatically opens under liquid pressure, allowing liquid to flow smoothly into the heat dissipation structure 103; when the first connector 1031 is disconnected from the liquid chiller, the one-way valve automatically closes due to the disappearance or reversal of liquid pressure, preventing coolant inside the heat dissipation structure 103 from leaking out through the first connector 1031. This one-way valve structure effectively achieves automatic sealing of liquid during pipeline disassembly, ensuring that liquid does not overflow during disassembly and maintenance, thus guaranteeing equipment safety and ease of maintenance.

[0055] In some embodiments, the first valve structure 101 and the second valve structure 102 may each include at least one bidirectional valve, or one of them may be provided with at least one bidirectional valve, or both may be provided with at least one bidirectional valve, and the specific choice can be flexibly made according to actual needs.

[0056] For example, the first valve structure 101 includes a two-way valve: Assuming the first valve structure 101 is installed on the flow channel between the outlet of the liquid chiller and the cooled equipment, by setting a two-way valve, the coolant can be allowed to flow from the liquid chiller to the cooled equipment, and the coolant can also flow in reverse under specific conditions (such as pressure difference changes or maintenance), thereby realizing the system maintenance or venting function.

[0057] For example, the second valve structure 102 includes a two-way valve: Assuming the second valve structure 102 is installed on the circuit from the outlet of the cooled equipment back to the liquid chiller, by setting a two-way valve, the coolant can be returned from the equipment to the liquid chiller during normal operation, and can also flow in reverse when the system is under maintenance or malfunctioning, thereby facilitating the discharge and maintenance of coolant in the equipment and pipelines.

[0058] For example, in the case where both the first valve structure 101 and the second valve structure 102 are equipped with bidirectional valves: In more complex liquid cooling pipeline systems, both the first valve structure 101 and the second valve structure 102 are arranged with bidirectional valves, which can more flexibly control the fluid direction and flow rate, and facilitate system fault diagnosis, cleaning, maintenance or emergency handling.

[0059] In summary, by incorporating a two-way valve into the valve structure, the system's fluid control becomes more flexible, facilitating the implementation of various operating modes and maintenance requirements, and improving the overall reliability and flexibility of the system.

[0060] In some embodiments, a motor-driven ball valve may be selected as the bidirectional valve. It is understood that a motor-driven ball valve uses an electric actuator (motor) to rotate a ball valve core, thereby achieving valve opening / closing or flow regulation. The internal structure of the ball valve does not strictly restrict the direction of fluid flow, thus facilitating bidirectional fluid flow.

[0061] For example, in a liquid circulation control system (such as a cooling water circulation system), the working fluid may change its flow direction according to different operating conditions or equipment requirements. In this case, ordinary one-way valves cannot meet the requirements, while motor-driven ball valves can effectively achieve this function. When the system operating state changes, the control system sends a command to the electric actuator, driving the ball valve core to rotate to the corresponding angle, thereby flexibly adjusting or switching the fluid flow channel, realizing the free flow of the medium in both directions or closing it.

[0062] In some embodiments, the first valve structure 101 includes: a first valve body, a first valve core, and a sealing structure. It is understood that the first valve body is the outermost structural component of the valve, and has a flow channel (i.e., the "first external flow channel") inside for fluid to enter or leave the valve; the first valve core is located inside the valve body and can move or rotate relative to the valve body, and also has a flow channel (i.e., the "first internal flow channel") inside the valve core.

[0063] Thus, when the valve core is in the open state, the inner flow channel of the valve core is connected to the outer flow channel of the valve body, allowing fluid to pass smoothly through the valve. When the valve core is in the closed state, the position or orientation of the valve core changes, blocking the connection between the inner and outer flow channels by the valve core body, thereby achieving the function of closing the valve and preventing fluid from passing through.

[0064] In addition, a sealing structure is installed on the outer surface of the valve core to seal the gap between the valve core and the valve body, ensuring that fluid cannot leak through the gap between the inner and outer flow channels when the valve is closed. This effectively prevents leakage problems when the valve is closed and improves the reliability of valve closure.

[0065] For example, taking an electric ball valve as an example, the valve body (i.e., the first valve body) is usually made of metal or high-strength plastic, with two flow channels (i.e., corresponding to the first external flow channel) on it. The valve core (i.e., the first valve core) is usually a ball with an internal through hole. When the ball rotates to a specific position so that the through hole aligns with the external flow channel of the valve body, fluid can pass through the valve, and the valve is in the open state. When the ball rotates 90 degrees, the through hole of the ball is no longer connected to the external flow channel of the valve body, and the fluid passage is blocked by the ball itself, and the valve is in the closed state. On the outer circumference of the ball, an elastic rubber or polytetrafluoroethylene (PTFE) sealing ring (i.e., a sealing structure) is generally provided. When the valve is closed, the sealing ring tightly fits against the outer surface of the ball, preventing fluid from leaking out from the gap between the valve core and the valve body.

[0066] In some embodiments, the second valve structure 102 includes: a second valve body, a second valve core, and a sealing structure. It is understood that the second valve body is the outermost structural component of the valve, and its interior is provided with a flow channel (i.e., the "second outer flow channel") for fluid to enter or leave the valve; the second valve core is located inside the valve body and can move or rotate relative to the valve body, and its interior is also provided with a flow channel (i.e., the "second inner flow channel").

[0067] Thus, when the valve core is in the open state, the inner flow channel of the valve core is connected to the outer flow channel of the valve body, allowing fluid to pass smoothly through the valve. When the valve core is in the closed state, the position or orientation of the valve core changes, blocking the connection between the inner and outer flow channels by the valve core body, thereby achieving the function of closing the valve and preventing fluid from passing through.

[0068] Furthermore, a sealing structure is installed on the outer surface of the valve core to seal the gap between the valve core and the valve body, ensuring that fluid cannot leak through the gap between the inner and outer flow channels when the valve is closed. This effectively prevents leakage when the valve is closed and improves the reliability of valve closure. Based on the same technical concept, embodiments of this application also provide a liquid cooling system, including a liquid chiller and the leak-proof device described in any of the above embodiments.

[0069] See here. Figure 2 , Figure 2 A schematic diagram of a liquid cooling system provided in an embodiment of this application is shown. Figure 2 As shown, the liquid cooling system mainly includes a water chiller, a one-way valve, an electric ball valve, a load (such as a server, chip, battery pack or other heat-generating device to be cooled), an external circulation pump and an air pump. The anti-leakage device mainly includes a heat dissipation structure connected to the load, a one-way valve as the first valve structure and an electric ball valve as the second valve structure.

[0070] Understandably, the check valve is positioned on the side of the load closest to the chiller's outlet, while the electric ball valve is positioned on the side closest to the chiller's return port. This liquid cooling system, by adding a check valve on the side of the load closest to the chiller's outlet, ensures that the coolant flows only unidirectionally to the chiller during purging, preventing backflow of coolant due to pressure differences after shutdown, thereby reducing coolant residue inside the liquid cooling plates. Simultaneously, by adding an electric ball valve on the side closest to the chiller's return port, the system can actively shut off the pipeline after purging, doubly blocking the leakage path of residual coolant and preventing coolant leakage from inside the liquid cooling plates after purging.

[0071] In short, the water chiller in this liquid cooling system is used to cool the liquid; the external circulation pump is used to drive the liquid circulation flow to dissipate heat from the load; the check valve prevents liquid backflow; the electric ball valve controls the liquid circuit opening and closing; and the air pump is used for system pressure regulation.

[0072] In summary, the liquid cooling system provided in this embodiment can effectively achieve stable heat dissipation of equipment, while the anti-leakage device further enhances system safety. It is suitable for various application scenarios such as data center servers, industrial equipment, communication equipment, and electric vehicle battery cooling.

[0073] In some embodiments, the first valve structure may be designed to include at least one check valve to prevent backflow of coolant in the liquid cooling system, ensuring the safe and stable operation of the system's liquid circuit. Furthermore, the liquid cooling system also includes an air pump connected in series between the outlet of the liquid chiller and the first connector, used to purge coolant from the pipeline back to the return port of the liquid chiller. For example, during maintenance, replacement, or repair of the liquid cooling system, purging the liquid circuit removes residual liquid, preventing coolant residue from remaining in the pipeline, thereby reducing the risk of leakage and improving the safety and convenience of system maintenance. Simultaneously, the air pump can be used to introduce air or inert gas at a certain pressure into the liquid cooling system to maintain system pressure balance and prevent negative pressure from causing air to enter the liquid circuit or causing blockage.

[0074] In some embodiments, a filter device is also provided on the connection pipeline between the leak-proof device and the liquid chiller. This filter device is used to filter impurities in the coolant. For example, a filter screen or filter element can be installed on the connection pipeline between the leak-proof device and the liquid chiller as a filter device to effectively filter impurities such as particulate matter, metal shavings, and dust in the coolant, preventing impurities from clogging the pipeline or damaging the liquid cooling components, thereby improving the reliability and stability of the liquid cooling system.

[0075] In some embodiments, the liquid cooling system further includes a drive module connected in series between the outlet of the liquid chiller and the first connector, for driving the coolant to flow within the pipeline. For example, the drive module may, but is not limited to, employ an external circulation pump, which can deliver the coolant cooled by the water chiller to the load end to cool the load equipment, and then return the coolant, having absorbed the load heat, to the water chiller for further cooling, thus achieving continuous circulating cooling.

[0076] It should be noted that the order of description of the embodiments in this application is not intended to limit the priority of the embodiments.

[0077] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in this application and in its specification is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.

[0078] It should be noted that, unless otherwise specified, the term "connected" or "linked" in this application includes not only directly connecting two entities, but also indirectly connecting them through other entities that have beneficial improvement effects.

[0079] The embodiments of this application have been described above with reference to the accompanying drawings. However, this application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many forms under the guidance of this application without departing from the spirit and scope of protection of the claims. All equivalent transformations made under the inventive concept of this application using the content of this application's specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of this application.

Claims

1. A leak-proof device, characterized in that... include: A heat dissipation structure includes a first connector and a second connector for connecting its internal liquid cooling space to a liquid cooler, wherein the first connector is for connecting to the liquid outlet of the liquid cooler, and the second connector is for connecting to the liquid return port of the liquid cooler. A first valve structure is provided at the first connector for shutting off the first connector when it is disassembled from the liquid outlet of the liquid cooler, so as to prevent liquid in the internal liquid cooling space from leaking from the first connector. A second valve structure is provided at the second connector for shutting off the second connector when it is disassembled from the return port of the liquid cooler, so as to prevent liquid in the internal liquid cooling space from leaking from the second connector.

2. The leak-proof device according to claim 1, characterized in that, The first valve structure includes at least one one-way valve that allows liquid to flow through the first connector to the heat dissipation structure.

3. The leak-proof device according to claim 1, characterized in that, The first valve structure includes at least one two-way valve. And / or, the second valve structure includes at least one two-way valve.

4. The leak-proof device according to claim 3, characterized in that, The bidirectional valve is a motor-driven ball valve.

5. The leak-proof device according to claim 1, characterized in that, The first valve structure includes: The first valve body is provided with a first external flow channel; The first valve core is provided with a first inner flow channel. When the first valve core is in the open state, the first outer flow channel is connected to the first inner flow channel; when the first valve core is in the closed state, the first outer flow channel is blocked by the first valve core. A sealing structure is disposed on the outer peripheral surface of the first valve core, which is used to seal the gap between the first inner flow channel and the first outer flow channel when the first valve core is in the closed state.

6. The leak-proof device according to claim 1, characterized in that, The second valve structure includes: The second valve body is provided with a second external flow channel; The second valve core is provided with a second inner flow channel. When the second valve core is in the open state, the second outer flow channel is connected to the second inner flow channel; when the second valve core is in the closed state, the second outer flow channel is blocked by the second valve core. A sealing structure is provided to seal the gap between the second inner flow channel and the second outer flow channel when the second valve core is in the closed state.

7. A liquid cooling system, comprising a liquid chiller and a leak-proof device as described in any one of claims 1-6.

8. The liquid cooling system according to claim 7, characterized in that, The first valve structure includes at least one check valve; The liquid cooling system also includes an air pump connected in series between the liquid outlet of the liquid chiller and the first connector, for blowing the coolant in the pipeline of the liquid cooling system back to the return port of the liquid chiller.

9. The liquid cooling system according to claim 7, characterized in that, A filter device is also installed on the connection pipeline between the anti-leakage device and the liquid cooler. The filter device is used to filter impurities in the coolant.

10. The liquid cooling system according to claim 7, characterized in that, The liquid cooling system also includes a drive module connected in series between the liquid outlet of the liquid chiller and the first connector, for driving the coolant to flow in the pipeline.

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