Liquid cooling heat dissipation device and liquid cooling charging system

Abstract

The utility model provides a liquid cooling heat dissipation device and a liquid cooling charging system, and relates to the technical field of charging equipment. The liquid cooling heat dissipation device is applied to the liquid cooling charging system and comprises a liquid storage device and a purification device, wherein the liquid storage device is used for storing a heat dissipation medium, a liquid outlet of the liquid storage device is detachably connected with liquid inlets of a plurality of charging modules in the liquid cooling charging system through a plurality of first liquid cooling pipelines, and a liquid inlet of the liquid storage device is detachably connected with liquid outlets of the plurality of charging modules through a plurality of second liquid cooling pipelines; a liquid inlet of the purification device is detachably connected with a liquid inlet or a liquid outlet of any one of the plurality of charging modules through a third liquid cooling pipeline, and the purification device is used for purifying the heat dissipation medium in any one of the charging modules. Therefore, a physical isolation barrier can be established, and the liquid cooling charging system is prevented from being polluted by the fault charging module. And a large amount of material waste and maintenance cost are reduced.

Description

Technical Field

[0001] This application relates to the field of charging equipment technology, and in particular to a liquid cooling heat dissipation device and a liquid cooling charging system. Background Technology

[0002] With the rapid development of the electric vehicle industry, the requirements for the performance and reliability of electric vehicle charging equipment are increasing. Currently, the commonly used immersion cooling system in the liquid cooling system of high-voltage, high-power charging equipment has many problems.

[0003] In existing technologies, immersion cooling systems generally employ an integrated circulating oil circuit design, achieving heat exchange through the circulation of mineral oil between charging modules. However, in actual operation, it has been found that when faults such as electrolytic capacitor explosions or power device damage occur inside the charging module, broken metal fragments, insulating media, and other impurities diffuse along the oil circuit, leading to contamination of the entire cooling system, resulting in significant material waste and increased maintenance costs. Utility Model Content

[0004] The purpose of this application is to provide a liquid cooling heat dissipation device and a liquid cooling charging system to alleviate the technical problems of fault propagation and resource waste that have long existed in the liquid cooling charging system of the prior art.

[0005] To achieve the above objectives, the technical solutions adopted in the embodiments of this application are as follows:

[0006] In a first aspect, embodiments of this application provide a liquid cooling heat dissipation device, which applies a liquid-cooled charging system. The liquid cooling heat dissipation device includes: a liquid storage device and a purification device; wherein, the liquid storage device is used to store a heat dissipation medium, and the liquid outlet of the liquid storage device is detachably connected to the liquid inlet of a plurality of charging modules in the liquid-cooled charging system through a plurality of first liquid cooling pipelines, and the liquid inlet of the liquid storage device is detachably connected to the liquid outlet of the plurality of charging modules through a plurality of second liquid cooling pipelines;

[0007] The inlet of the purification device is detachably connected to the inlet or outlet of any of the multiple charging modules via a third liquid cooling pipeline. The purification device is used to purify the heat dissipation medium within any of the charging modules.

[0008] Optionally, the liquid storage device includes: a liquid storage tank and a first liquid pump. The liquid storage tank is used to store a heat dissipation medium. The inlet of the liquid storage tank is the inlet of the liquid storage device. The outlet of the liquid storage tank is connected to the inlet of the first liquid pump. The outlet of the first liquid pump is the outlet of the liquid storage device.

[0009] Optionally, the purification device includes at least: a purification box, which is used to purify the heat dissipation medium, and the liquid inlet of the purification box is the liquid inlet or liquid outlet of the purification device.

[0010] Optionally, the purification device further includes: a second liquid pump, the outlet of the second liquid pump being detachably connected to the outlet or inlet of any of the charging modules via a fourth liquid cooling pipeline;

[0011] The outlet of the purification chamber is connected to the inlet of the second liquid pump, or the inlet of the second liquid pump is used to receive air.

[0012] Optionally, the outlet of the purification box is detachably connected to the inlet of the liquid storage device via a fifth liquid cooling pipe, and any of the charging modules is also provided with an air inlet.

[0013] Optionally, multiple inlet control valves are provided on each of the multiple first liquid cooling pipelines, and multiple outlet control valves are provided on each of the multiple second liquid cooling pipelines.

[0014] Optionally, the purification chamber includes: a first storage chamber, at least one filter layer, and a second storage chamber arranged vertically in sequence. The first storage chamber is provided with a liquid inlet, and the bottom of the second storage chamber is provided with a liquid outlet. The at least one filter layer is used to filter the heat dissipation medium from the first storage chamber in sequence.

[0015] Optionally, the at least one filter layer includes: a metal interception layer, a dielectric adsorption layer, and a dielectric strengthening layer, wherein the metal interception layer is disposed at the bottom of the first storage cavity, the dielectric strengthening layer is disposed at the top of the second storage cavity, and the dielectric adsorption layer is disposed between the metal interception layer and the dielectric strengthening layer.

[0016] Optionally, the outlet of the purification tank can be detachably connected to an auxiliary liquid storage device.

[0017] Secondly, embodiments of this application provide a liquid-cooled charging system, comprising: at least two immersion charging modules and any of the liquid cooling heat dissipation devices described in the first aspect above, wherein the charging module has a sealed housing containing an insulating coolant, and the charging module includes at least a charging module body, the charging module body being wholly or partially immersed in the insulating coolant.

[0018] This application provides a liquid cooling heat dissipation device and a liquid cooling charging system, relating to the field of charging equipment technology. The liquid cooling heat dissipation device utilizes a liquid cooling charging system and can be composed of a liquid storage device and a purification device. The liquid storage device stores the heat dissipation medium. The outlet of the liquid storage device is detachably connected to the inlets of multiple charging modules in the liquid cooling charging system via multiple first liquid cooling pipelines. The inlets of the liquid storage device are detachably connected to the outlets of multiple charging modules via multiple second liquid cooling pipelines, ensuring that the heat dissipation medium circulates within the charging modules, effectively removing the heat generated by the charging modules and ensuring that the charging modules can operate at lower temperatures, improving the performance and stability of the charging modules. The inlet of the purification device is detachably connected to the inlet or outlet of any of the multiple charging modules via a third liquid cooling pipeline, allowing the liquid cooling heat dissipation device to be flexibly and adaptively configured according to actual needs. The purification device is used to purify the heat dissipation medium within any charging module, reducing wear and corrosion of the internal components of the charging module and extending the service life of the charging module and the liquid cooling heat dissipation device. Therefore, the liquid cooling heat dissipation device provided in this application can prevent impurities generated by faulty charging modules from contaminating the liquid cooling charging system, reduce material waste and maintenance costs, ensure that the charging modules operate within a stable temperature range, reduce the probability of failures caused by temperature fluctuations or overheating, improve the stability and reliability of the entire liquid cooling charging system, and ensure the smooth progress of the charging process. Furthermore, this application adopts a detachable connection method, which is very convenient for maintenance and component replacement, whether between the liquid storage device and the charging module or between the purification device and the charging module. When a charging module fails, it can be quickly disassembled and replaced, reducing downtime of the liquid cooling heat dissipation device and improving its reliability. At the same time, the detachable connection of the purification device also facilitates its cleaning and maintenance. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the specific embodiments of this application or the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the structure of a liquid-cooled charging system provided in an embodiment of this application;

[0021] Figure 2 A schematic diagram of the structure of a liquid cooling heat dissipation device provided in this application embodiment. Figure 1 ;

[0022] Figure 3A schematic diagram of the structure of a liquid cooling heat dissipation device provided in this application embodiment. Figure 2 ;

[0023] Figure 4 A schematic diagram of the structure of a liquid cooling heat dissipation device provided in this application embodiment. Figure 3 ;

[0024] Figure 5 A schematic diagram of the structure of a liquid cooling heat dissipation device provided in this application embodiment. Figure 4 ;

[0025] Figure 6 A schematic diagram of the structure of a liquid cooling heat dissipation device provided in this application embodiment. Figure 5 ;

[0026] Figure 7 A schematic diagram of the structure of a liquid cooling heat dissipation device provided in this application embodiment. Figure 6 ;

[0027] Figure 8 A schematic diagram of the structure of a purification box provided in this application embodiment. Figure 1 ;

[0028] Figure 9 A schematic diagram of the structure of a purification box provided in this application embodiment. Figure 2 . Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0030] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0031] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0032] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the utility model product is in use. They are only for the convenience of describing this application 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 limitations on this application. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0033] Furthermore, terms such as "horizontal," "vertical," and "sag" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0034] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "set up," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0035] The following detailed description of some embodiments of this application is provided in conjunction with the accompanying drawings. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0036] To better understand the solutions provided in the embodiments of this application, the following detailed description of a liquid cooling heat dissipation device and a liquid cooling charging system provided in the embodiments of this application will be provided in conjunction with the accompanying drawings.

[0037] Figure 1 A schematic diagram of the structure of a liquid-cooled charging system provided in this application embodiment. Figure 1 .like Figure 1 As shown, the liquid-cooled charging system 200 may include at least two immersion charging modules 210 and a liquid cooling heat dissipation device 100.

[0038] The charging module 210 has a sealed housing containing an insulating coolant. The charging module 210 may include at least a charging module body, which is wholly or partially immersed in the insulating coolant to utilize the coolant's thermal conductivity to quickly absorb and remove the heat generated during operation. Immersing the charging module 210 in the insulating coolant also prevents short circuits and isolates it from air, avoiding corrosion and high-temperature problems caused by air. A liquid cooling heat dissipation device 100 is disposed outside the charging module 210 for heat exchange with it, removing the heat generated by the charging module 210. In this application, the charging module body is a PCBA (Printed Circuit Board Assembly).

[0039] It should be noted that the liquid-cooled charging system 200 is applicable to the maintenance of liquid cooling systems for high-voltage, high-power charging equipment.

[0040] This application provides a liquid-cooled charging system, comprising at least two submerged charging modules and a liquid-cooling heat dissipation device. Each charging module has a sealed housing containing an insulating coolant. The charging module consists of at least a charging module body, which is wholly or partially immersed in the insulating coolant to dissipate the high temperatures generated during operation. The liquid-cooling heat dissipation device is located outside the charging module and also dissipates the high temperatures generated during operation. Thus, this application employs a dual heat dissipation mechanism consisting of the insulating coolant and the liquid-cooling heat dissipation device. Internally, the insulating coolant facilitates efficient heat exchange between the charging module and the liquid-cooling heat dissipation device, while externally, the circulating loop of the liquid-cooling heat dissipation device continuously removes heat from the charging module. This coordinated internal and external heat dissipation design ensures that the charging module maintains a stable operating temperature under high load, effectively avoiding performance degradation and failure risks caused by overheating, and improving the stability and reliability of the liquid-cooled charging system.

[0041] Furthermore, the liquid cooling heat dissipation device 100 provided in the embodiments of this application will be further described below with reference to the accompanying drawings. Figure 2 A schematic diagram of the structure of a liquid cooling heat dissipation device provided in this application embodiment. Figure 1 .like Figure 2 As shown, the liquid cooling heat dissipation device 100 uses a liquid cooling charging system 200, and the liquid cooling heat dissipation device 100 may include a liquid storage device 110 and a purification device 120.

[0042] The liquid storage device 110 stores the heat dissipation medium, which rapidly absorbs heat generated when working with the charging module, ensuring the stability of the charging module. The outlet of the liquid storage device 110 is detachably connected to the inlets of multiple charging modules 210 in the liquid-cooled charging system 200 via multiple first liquid cooling pipes (Lin_n), allowing the heat dissipation medium to be transported from the liquid storage device 110 to each charging module for cooling. Simultaneously, the inlets of the liquid storage device 110 are detachably connected to the outlets of multiple charging modules 210 via multiple second liquid cooling pipes (Lout_n), allowing the heat dissipation medium, after heat exchange with the charging modules, to flow back into the liquid storage device 110, forming a complete circulation loop. The connection between the liquid storage device 110 and the multiple charging modules 210 is detachable, making maintenance and replacement of the multiple charging modules or other components more convenient. Among them, multiple first liquid cooling pipes Lin_n can be the oil inlet pipes of each charging module; multiple second liquid cooling pipes Lout_n can be the oil outlet pipes of each charging module. The heat dissipation medium can be selected as oil.

[0043] The purification device 120 is used to purify the heat dissipation medium within any charging module 210 to ensure its purity and maintain efficient system operation. The inlet of the purification device 120 is detachably connected to the inlet or outlet of any of the multiple charging modules 210 via a third liquid cooling pipeline Lp. When connected to the outlet of a charging module 210, it can purify the heat dissipation medium flowing out of the charging module 210, removing impurities generated within the charging module 210; when connected to the inlet of a charging module 210, it ensures the purity of the heat dissipation medium entering the charging module 210. This makes the connection between the inlet of the purification device 120 and the charging module 210 more flexible, allowing for selection of the appropriate connection location based on actual needs to achieve heat dissipation medium purification. The third liquid cooling pipeline Lp is the oil outlet pipeline Lp of the purification device 120.

[0044] It should be noted that the above Figure 2 This illustration only shows the liquid inlet of the purification device 120 being detachably connected to the liquid inlet of any one of the multiple charging modules 210 via a third liquid cooling pipe Lp. However, this is not the only connection method. In fact, the liquid inlet of the purification device 120 can also be detachably connected to the liquid outlet of any one of the multiple charging modules 210 via the third liquid cooling pipe Lp. No restrictions are placed on these two connection methods. For ease of explanation, the following description primarily uses the example of the liquid inlet of the purification device 120 being connected to the liquid inlet of any one of the charging modules 210. However, it should be clarified that this does not imply a limitation on other connection methods in this application.

[0045] The liquid cooling heat dissipation device provided in this application applies a liquid-cooled charging system. This device comprises a liquid storage device and a purification device. The liquid storage device stores the heat dissipation medium. Its outlet is detachably connected to the inlets of multiple charging modules in the liquid-cooled charging system via multiple first liquid cooling pipelines. The inlets of the liquid storage device are also detachably connected to the outlets of multiple charging modules via multiple second liquid cooling pipelines, ensuring the heat dissipation medium circulates within the charging modules. This effectively removes the heat generated by the charging modules, ensuring they can operate at lower temperatures and improving their performance and stability. The purification device's inlet is detachably connected to the inlet or outlet of any one of the multiple charging modules via a third liquid cooling pipeline, allowing for flexible and adaptable configuration based on actual needs. The purification device purifies the heat dissipation medium within any charging module, reducing wear and corrosion of internal components and extending the service life of both the charging modules and the liquid cooling heat dissipation device. Therefore, the liquid cooling heat dissipation device provided in this application can prevent impurities generated by faulty charging modules from contaminating the liquid cooling charging system, reduce material waste and maintenance costs, ensure that the charging modules operate within a stable temperature range, reduce the probability of failures caused by temperature fluctuations or overheating, improve the stability and reliability of the entire liquid cooling charging system, and ensure the smooth progress of the charging process. Furthermore, this application adopts a detachable connection method, which is very convenient for maintenance and component replacement, whether between the liquid storage device and the charging module or between the purification device and the charging module. When a charging module fails, it can be quickly disassembled and replaced, reducing downtime of the liquid cooling heat dissipation device and improving its reliability. At the same time, the detachable connection of the purification device also facilitates its cleaning and maintenance.

[0046] exist Figure 2 On this basis, Figure 3 A schematic diagram of the structure of a liquid cooling heat dissipation device provided in this application embodiment. Figure 2 .like Figure 3 As shown, the liquid storage device 110 may include: a liquid storage tank 111 and a first liquid pump M1.

[0047] The liquid storage tank 111 is used to store the heat dissipation medium to ensure the circulation of the liquid storage device 110. The liquid inlet of the liquid storage tank 111 is the liquid inlet of the liquid storage device 110. It is used to receive the heat dissipation medium flowing out from the charging module after heat exchange. Then, this heat dissipation medium, which has absorbed heat through the charging module, flows back to the liquid storage tank 111 through multiple second liquid cooling pipelines Lout_n. It is temporarily stored in the liquid storage tank 111 for reuse.

[0048] The outlet of the liquid storage tank 111 is connected to the inlet of the first liquid pump M1, and the outlet of the first liquid pump M1 serves as the outlet of the liquid storage device 110, connected to multiple first liquid cooling pipelines Lin_n. The first liquid pump M1 provides power for the circulation of the heat dissipation medium. It extracts the heat dissipation medium from the liquid storage tank 111 and delivers it through the multiple first liquid cooling pipelines Lin_n to the inlets of each charging module, allowing the heat dissipation medium to continuously circulate within the liquid cooling device 100, constantly carrying away the heat generated by the charging modules. The first liquid pump M1 can be an oil pump M1.

[0049] The liquid cooling device provided in this application includes a liquid storage device consisting of a liquid storage tank and a first liquid pump. The liquid storage tank stores sufficient heat dissipation medium to prevent circulation interruption due to insufficient heat dissipation medium. The inlet of the liquid storage tank is the inlet of the liquid storage device, and the outlet of the liquid storage tank is connected to the inlet of the first liquid pump. The outlet of the first liquid pump is the outlet of the liquid storage device. The first liquid pump provides stable and controllable power for the circulation of the heat dissipation medium. Therefore, both the liquid storage tank and the first liquid pump in this application can be independently installed, making maintenance and troubleshooting of the liquid cooling device more convenient. When the liquid storage tank experiences leakage or contamination, it can be directly inspected and repaired without disassembling the entire liquid storage device. If the first liquid pump malfunctions, it can be quickly replaced without affecting the normal use of the liquid storage tank. Furthermore, the connection method between the liquid storage tank and the first liquid pump simplifies the addition or replacement of the heat dissipation medium, requiring only a specific interface on the liquid storage tank. This significantly reduces maintenance costs and difficulty, improving the maintainability and reliability of the liquid cooling device. At the same time, it can ensure that the heat dissipation medium circulates in a closed piping system, reducing the risk of heat dissipation medium leakage.

[0050] Based on 3 Figure 4 A schematic diagram of the structure of a liquid cooling heat dissipation device provided in this application embodiment. Figure 3 .like Figure 4 As shown, the purification device 120 may include at least: a purification box 121.

[0051] The purification box 121 is used to purify the heat dissipation medium in circulation. The liquid inlet of the purification box 121 is directly used as the liquid inlet or outlet of the purification device 120. It is detachably connected to the liquid inlet or outlet of any of the multiple charging modules through the third liquid cooling pipeline Lp.

[0052] The liquid cooling heat dissipation device provided in this application includes a purification device that can consist of at least a purification box. The purification box is used to purify the heat dissipation medium, maintaining its purity to reduce wear and corrosion on the precision components inside the charging module, thereby ensuring the stable operation of the entire charging module. The inlet of the purification box serves as either the inlet or outlet of the purification device. Therefore, because the purification box of this application can effectively remove impurities from the heat dissipation medium, it extends the service life of the heat dissipation medium and reduces the frequency of its replacement. Simultaneously, it avoids damage to internal components of the charging module caused by impurities, reducing the probability of repair and replacement of the charging module. Furthermore, the purification box itself has a relatively independent structure, making maintenance and cleaning simple and eliminating the need for large-scale disassembly of the entire liquid cooling heat dissipation device. This reduces the maintenance cost and workload of the liquid cooling heat dissipation device, improving the economy and maintainability of the liquid-cooled charging system.

[0053] exist Figure 4 On this basis, Figure 5 A schematic diagram of the structure of a liquid cooling heat dissipation device provided in this application embodiment. Figure 4 .like Figure 5 As shown, the purification device 120 may further include a second liquid pump M2.

[0054] The outlet of the second liquid pump M2 is detachably connected to the outlet or inlet of any charging module via the fourth liquid cooling pipeline Lq, providing a flexible channel for the circulation of the heat dissipation medium between the purification device 120 and the charging module. The outlet of the purification tank 121 is connected to the inlet of the second liquid pump M2, forming a circulation path of "purification tank 121 - second liquid pump M2 - charging module". The second liquid pump M2 can be an oil pump M2. The fourth liquid cooling pipeline Lq is the oil inlet pipeline Lq of the purification device 120.

[0055] exist Figure 4 On this basis, Figure 6 A schematic diagram of the structure of a liquid cooling heat dissipation device provided in this application embodiment. Figure 5 .like Figure 6 As shown, the inlet of the second liquid pump M2 can also be used to receive air.

[0056] In one possible implementation, when the inlet of the second liquid pump M2 is connected to the outlet of the purification tank 121, the second liquid pump M2 extracts the purified heat dissipation medium from the purification tank 121 and re-delivers it to any charging module through the fourth liquid cooling pipeline Lq, accelerating the circulation and renewal of the heat dissipation medium and ensuring that the charging module receives a clean heat dissipation medium in a timely manner. When the inlet of the second liquid pump M2 receives air, it can switch to air washing or purging mode, using air pressure and flow to clean the inside of the purification tank 121, the fourth liquid cooling pipeline Lq, and the charging module, removing stubborn impurities adhering to the pipe wall of the fourth liquid cooling pipeline Lq and the surface of the charging equipment. Simultaneously, when the inlet of the second liquid pump M2 receives air, the second liquid pump M2 is driven to operate based on the air pressure received by the second liquid pump M2.

[0057] It should be noted that the above Figure 5 This illustration only shows the outlet of the second liquid pump M2 being detachably connected to the outlet of any one of the multiple charging modules 210 via the fourth liquid cooling pipe Lq. However, this is not the only connection method. In fact, the outlet of the second liquid pump M2 can also be detachably connected to the inlet of any one of the multiple charging modules 210 via the fourth liquid cooling pipe Lq. No restrictions are placed on these two connection methods. For ease of explanation, the following description primarily uses the example of the outlet of the second liquid pump M2 being connected to the outlet of any charging module 210. However, it should be clarified that this does not imply a limitation on other connection methods in this application.

[0058] The liquid cooling heat dissipation device provided in this application includes a purification device that can further consist of a second liquid pump. The outlet of the second liquid pump is detachably connected to the outlet or inlet of any charging module via a fourth liquid cooling pipeline. The outlet of the purification tank is connected to the inlet of the second liquid pump, or the inlet of the second liquid pump is used to receive air. Therefore, the second liquid pump of this application can provide additional power for the circulation of the heat dissipation medium. Compared to relying solely on the circulation mode of the first liquid pump in the storage device, it can accelerate the flow speed of the heat dissipation medium between the purification device and the charging module, thereby improving the heat dissipation response speed of the entire liquid-cooled charging system and ensuring that the charging module can still operate stably under high-temperature conditions.

[0059] Optionally, continue to refer to Figure 6 The outlet of the purification chamber 121 is detachably connected to the inlet of the storage device 110 via the fifth liquid cooling pipe Lr, forming a direct passage between the purification device 120 and the storage device 110. This allows the purified heat dissipation medium, after being treated by the purification chamber 121, to flow directly back to the storage device 110 via the fifth liquid cooling pipe Lr, re-entering the circulation of the entire liquid-cooled charging system. This connection method eliminates the need for the heat dissipation medium to flow back through the charging module after purification, simplifying the circulation path of the heat dissipation medium.

[0060] Optionally, in Figure 6 On this basis, Figure 7 A schematic diagram of the structure of a liquid cooling heat dissipation device provided in this application embodiment. Figure 6 .like Figure 7 As shown, any charging module is also provided with an air inlet A, which can be connected to an external air source, so that air enters the charging module from the air inlet A, and the air pressure inside the charging module drives the heat dissipation medium in the charging module through the third liquid cooling pipeline Lp to the liquid inlet of the purification box 121, so that the purification box 121 purifies the heat dissipation medium.

[0061] The liquid cooling heat dissipation device provided in this application includes a purification chamber outlet detachably connected to the liquid inlet of a storage device via a fifth liquid cooling pipeline. This shortens the return path of the purified heat dissipation medium, reducing flow resistance and circulation time. Each charging module is also equipped with an air inlet, allowing the air inlet of the charging module to work in conjunction with the air purging function of the second liquid pump, achieving deep cleaning of the charging module's interior. Simultaneously, if the purification chamber inlet is detachably connected to the liquid inlet of any one of the multiple charging modules via a third liquid cooling pipeline, the air pressure inside that charging module forces the heat dissipation medium through the third liquid cooling pipeline to the purification chamber's inlet, thus purifying the heat dissipation medium.

[0062] Optionally, continue to refer to Figure 5 Each of the aforementioned multiple first liquid cooling pipelines Lin_n is equipped with multiple inlet control valves Kin_n to control the flow rate of the heat dissipation medium from the liquid storage device 110 to the charging module. Each inlet control valve Kin corresponds to the liquid inlet of a charging module. By opening, closing, or adjusting the opening degree of the inlet control valve Kin, the flow rate of the heat dissipation medium entering each charging module can be precisely adjusted. Each of the multiple second liquid cooling pipelines Lout_n is equipped with multiple outlet control valves Kout_n, installed on the return pipeline between the charging module and the liquid storage device 110, to control the flow rate of the heat dissipation medium flowing back from the charging module to the liquid storage device 110. These second liquid cooling pipelines Lout can be manually controlled, electrically controlled, or intelligently controlled, allowing for flexible adjustment of the circulation path and flow rate of the heat dissipation medium according to actual needs.

[0063] Among them, multiple inlet control valves Kin_n can be used to represent the interlocking control valves of each inlet oil line; multiple outlet control valves Kout_n are the interlocking control valves of each outlet oil line. Both the inlet control valve Kin and the outlet control valve Kout can be selected as electromagnetically driven valves.

[0064] The liquid cooling device provided in this application includes multiple inlet control valves on multiple first liquid cooling pipelines and multiple outlet control valves on multiple second liquid cooling pipelines. This allows for the installation of inlet and outlet control valves at the oil inlet and outlet of each charging module, establishing a physical isolation barrier in fault conditions. This enables precise adjustment of the heat dissipation medium flow rate according to the actual heat dissipation requirements of different charging modules. Furthermore, when a charging module or its connected liquid cooling pipeline malfunctions (e.g., leaks, blockages), the corresponding inlet and outlet control valves can be quickly shut off, isolating the faulty area from the entire liquid cooling system. This not only prevents the spread of the fault and avoids affecting the normal operation of other charging modules but also reduces heat dissipation medium leakage and waste caused by the fault.

[0065] Figure 8 A schematic diagram of the structure of a purification box provided in this application embodiment. Figure 1 .like Figure 8 As shown, the purification chamber 121 may include: a first storage chamber 123, at least one filter layer 124, and a second storage chamber 125 arranged vertically in sequence.

[0066] The first storage chamber 123 is provided with a liquid inlet, so that the heat dissipation medium to be purified can enter the first storage chamber 123 of the purification box 121 and flow downward naturally by gravity into at least one filter layer 124. The at least one filter layer 124 is used to filter the heat dissipation medium from the first storage chamber 123 in sequence, thereby improving the purity of the heat dissipation medium to be purified. Then, the filtered heat dissipation medium flows into the second storage chamber 125. The liquid outlet at the bottom of the second storage chamber 125 is connected to the liquid storage device 110 through the fifth liquid cooling pipeline Lr. The purified heat dissipation medium flows out from here and re-enters the cycle of the liquid cooling charging system.

[0067] The liquid cooling heat dissipation device provided in this application includes a purification box with a vertically layered structure. From top to bottom, it comprises a first storage chamber, at least one filter layer, and a second storage chamber. The first storage chamber has a liquid inlet, and the second storage chamber has a liquid outlet at its bottom. The at least one filter layer sequentially filters the heat dissipation medium from the first storage chamber, achieving multi-dimensional purification of the heat dissipation medium. Therefore, the purification box provided in this application, by integrating an impurity storage chamber and at least one filter layer, allows the heat dissipation medium to flow naturally by gravity, avoiding the need for additional pumping equipment to move the medium within the purification box and reducing the energy consumption of the liquid cooling charging system.

[0068] Figure 9 A schematic diagram of the structure of a purification box provided in this application embodiment. Figure 2 .like Figure 9As shown, the at least one filter layer 124 may include: a metal interception layer 126, a dielectric adsorption layer 127, and a dielectric reinforcement layer 128.

[0069] The metal interception layer 126 is disposed at the bottom of the first storage cavity 123. The metal interception layer 126 can be used as a coarse filter layer. It adopts a cylindrical stainless steel filter screen (pore size 0.5-1mm) with a nickel-plated anti-corrosion material on the surface to intercept large particulate impurities such as metal fragments and semiconductor device debris generated by the explosion of electrolytic capacitors.

[0070] The dielectric strengthening layer 127 is disposed on the top of the second storage cavity 125. The dielectric strengthening layer 127 can serve as a functional recovery layer. It is made of polymer resin permeation membrane and ion exchange unit materials to remove free charges in the oil and restore the dielectric strength of the mineral oil.

[0071] The dielectric adsorption layer 128 is disposed between the metal interception layer 126 and the dielectric reinforcement layer 127. The dielectric adsorption layer 128 can be used as a fine filtration layer. It adopts a ceramic-based composite filter element (porosity 60%-70%) and a material with embedded magnetic adsorption units to adsorb insulating dielectric powder, carbonized particles and tiny magnetic impurities (such as silicon steel sheet fragments).

[0072] It should be noted that the aforementioned metal interception layer 126, dielectric adsorption layer 127, and dielectric reinforcement layer 128 are flexibly selectable in practical applications. One, two, or all of them can be used depending on the type of impurities in the heat dissipation medium and the operating requirements of the charging module. It is important to emphasize that regardless of the selected filter layers, their installation order must follow a top-to-bottom arrangement: the metal interception layer 126 is located at the top, adjacent to the bottom of the first storage chamber 123, to intercept metallic impurities in the heat dissipation medium first; the dielectric adsorption layer 127 is in the middle to further adsorb organic pollutants, moisture, and other fine impurities; and the dielectric reinforcement layer 128 is at the bottom, close to the top of the second storage chamber 125, to optimize the dielectric properties of the heat dissipation medium. This design, combining flexible selection with a fixed arrangement, not only meets diverse purification needs but also ensures the scientific and efficient nature of the impurity filtration and performance optimization process.

[0073] The liquid cooling heat dissipation device provided in this application includes at least one filter layer composed of a metal interception layer, a dielectric adsorption layer, and a dielectric reinforcement layer. The metal interception layer is disposed at the bottom of the first storage cavity, the dielectric reinforcement layer is disposed at the top of the second storage cavity, and the dielectric adsorption layer is disposed between the metal interception layer and the dielectric reinforcement layer. Thus, the filter layer of this application adopts a three-layer filtration structure with clear division of labor, forming a hierarchical filtration system for heat dissipation impurities. The metal interception layer preferentially removes large-particle metal impurities, reducing the burden on subsequent filter layers; the dielectric adsorption layer further adsorbs various fine impurities and contaminants; and the dielectric reinforcement layer optimizes the dielectric properties of the heat dissipation medium. This hierarchical filtration method can efficiently remove impurities of different types and particle sizes from the heat dissipation medium. Compared with a single filter layer, the purification effect is more comprehensive and precise, significantly improving the purity of the heat dissipation medium.

[0074] Optionally, continue to refer to Figure 9 The outlet of the aforementioned purification tank 121 is detachably connected to an auxiliary liquid storage device. This auxiliary liquid storage device serves as an additional reserve of heat dissipation medium to ensure uninterrupted circulation and supply of the heat dissipation medium under high load operation. This auxiliary liquid storage device can be selected as a system auxiliary oil tank.

[0075] The liquid cooling heat dissipation device provided in this application has an auxiliary liquid storage device that can be detachably connected to the liquid outlet of the purification tank. Therefore, in the event of a leak, malfunction, or other emergency in the liquid storage tank, the auxiliary liquid storage device can serve as a temporary replacement, continuing to provide heat dissipation medium for the charging module. This improves the fault response capability of the liquid cooling heat dissipation device, reduces the amount of purification heat dissipation medium replacement and hazardous waste disposal, and lowers operation and maintenance costs.

[0076] For example, this application provides the implementation steps of the purification box 121, which are as follows: Step 1: Fault detection and isolation stage. The background monitoring of the liquid-cooled charging system 200 monitors the internal fault type of each charging module, performs collaborative judgment and performs a lockout operation; triggers the electromagnetic drive valves (such as each liquid inlet control valve Kin and each liquid outlet control valve Kout) to close the inlet and outlet oil pipelines of the charging module; then, the location of the faulty charging module is locked through the monitoring background and the indicator lights of each charging module.

[0077] Step 2: Oil purification stage. A three-stage oil filtration process is implemented: pre-storage tank (metal) → coarse filter layer (interception of metal debris or blocky impurities) → fine filter layer (adsorption of dielectric particles) → oil function restoration layer (restores dielectric strength) → purified oil storage tank; the bottom of the purified oil storage tank is equipped with an oil sampling port, through which a portion of the purified oil can be taken for relevant cleanliness and insulation performance tests.

[0078] Step 3: Oil recycling stage. The qualified oil is temporarily stored in the auxiliary storage device; after the liquid cooling charging system 200 is reset, it is replenished with regenerated oil first; and an oil quality file is established to achieve full life cycle tracking.

[0079] Step 4: Charging Module Maintenance Phase. Solid impurities are centrally processed through a detachable containment chamber; a modular charging replacement design quickly restores system functionality; and each filter layer is periodically rinsed for reuse.

[0080] The liquid cooling heat dissipation device provided in this application confines the diffusion range of impurities from faulty charging modules to the interior of a single charging module, significantly reducing the contamination area. Then, through a directional filtration process, it achieves online purification and recycling of mineral oil within the damaged charging module. Furthermore, through automated pollution control via background fault monitoring and valve linkage control of the liquid cooling charging system, it prevents impurities generated by faulty charging modules from contaminating the liquid cooling charging system, reducing material waste and maintenance costs. This solves the long-standing problems of fault diffusion and resource waste in immersion cooling systems, achieving physical isolation of faulty charging modules and localized oil regeneration. A protective system combining graded filtration and fault monitoring is established to ensure the normal operation of non-faulty charging modules. An engineerable modular liquid cooling charging system maintenance solution is developed, reducing the amount of hazardous waste oil transportation and disposal, and forming a scalable and environmentally friendly operation and maintenance standard for liquid cooling charging systems.

[0081] For example, continue to refer to Figure 5 This application provides a method for handling faulty charging modules.

[0082] When charging module n# in the liquid-cooled charging system malfunctions, the inlet valve Kin_n and outlet valve Kout_n of the malfunctioning charging module n# are closed first. Here, the malfunctioning charging module n# can be any charging module in the entire liquid-cooled charging system; no restrictions are imposed here.

[0083] If the liquid-cooled charging system is troubleshooted, a restart operation needs to be performed on the faulty charging module n#. The inlet valve Kin_n and outlet valve Kout_n should be kept closed. Repeated restarts should be performed according to the instructions of the liquid-cooled charging system. If the restart is successful, the faulty charging module n# is returned to normal and can be charged. If the restart fails, the faulty charging module n# is removed from the liquid-cooled charging system, and the monitoring anomaly is reported for later maintenance. After the maintenance personnel are in place, disconnect the inlet and outlet oil lines Lin_n and Lout_n, connect the outlet oil line Lp of oil pump M2 to the outlet of the faulty charging module n#, and connect the inlet oil line Lq of purification tank 121 to the inlet of the faulty charging module n#. Then, start oil pump M2 to perform oil drainage and purification. The volume of the purification oil storage tank in purification tank 121 should ideally be configured to 120% of the total oil volume of a single charging module.

[0084] After the faulty charging module n# is replaced with a good charging module, the purified cooling oil in the purification box 121 is injected into the charging module through the oil pump M2. The oil outlet line Lp and oil inlet line Lq of the repair are disconnected, and the oil inlet line Lin_n and oil inlet line Lout_n of the charging module are reconnected. The oil inlet valve Kin_n and oil outlet valve Kout_n are opened through monitoring, so that the entire liquid-cooled charging system 200 can operate normally.

[0085] For example, continue to refer to Figure 6 This application provides another method for handling faulty charging modules. When charging module n# in the liquid-cooled charging system malfunctions, the inlet valve Kin_n and outlet valve Kout_n of the faulty charging module n# are first closed. If the liquid-cooled charging system is troubleshooted, a restart operation needs to be performed on the faulty charging module n#. The inlet valve Kin_n and outlet valve Kout_n can be kept closed continuously. The module is restarted multiple times according to the instructions of the liquid-cooled charging system. If the restart is successful, the faulty charging module n# is returned to normal and can be charged and operated. If the restart is unsuccessful, the faulty charging module n# is removed from the liquid-cooled charging system, and the monitoring anomaly is reported to facilitate subsequent maintenance by staff. After the maintenance personnel are in place, disconnect the oil inlet line Lin_n and the oil outlet line Lout_n. Connect the oil outlet line Lp of oil pump M2 to the oil outlet of fault charging module n#; connect the oil inlet line Lq of purification tank 121 to the oil inlet of fault charging module n#, and then connect the oil outlet line Lr of purification tank 121 to the oil inlet of storage tank 111 (normally connected); start oil pump M2 to perform oil drainage and purification operations. It is advisable that the volume of the purified oil temporary storage tank of purification tank 121 be configured to be 120% of the total oil volume of a single module.

[0086] After the faulty charging module n# is replaced with a good charging module, disconnect the oil outlet line Lp and oil inlet line Lq that were being repaired, and reconnect the oil inlet line Lin_n and oil outlet line Lout_n of the charging module. Open the oil inlet valve Kin_n and oil outlet valve Kout_n through monitoring, so that the entire liquid-cooled charging system 200 can operate normally. The purified cooling oil in the purification tank 121 is injected into the charging module through the liquid storage tank 111.

[0087] For example, continue to refer to Figure 7 This application provides an alternative method for handling faulty charging modules.

[0088] When charging module n# in the liquid-cooled charging system malfunctions, first close the inlet valve Kin_n and outlet valve Kout_n of the faulty charging module n#. If the liquid-cooled charging system is troubleshooted, a restart operation needs to be performed on the faulty charging module n#. Keep the inlet valve Kin_n and outlet valve Kout_n closed, and restart multiple times (e.g., at least 3 times) according to the instructions of the liquid-cooled charging system. If the restart is successful, the faulty charging module n# is returned to normal and can be charged; if the restart fails, the faulty charging module n# is removed from the liquid-cooled charging system, and the monitoring anomaly is reported for later maintenance by staff. After the maintenance personnel are in place, disconnect the oil inlet line Lin_n and the oil outlet line Lout_n, open the upper air inlet valve (air inlet) of the faulty charging module n#, and connect the oil inlet line Lq of the purification box 121 to the oil inlet of the faulty charging module n#; connect the oil outlet line Lr of the purification box 121 to the oil inlet of the liquid storage tank 111 (normally connected); and perform natural purification operation using atmospheric pressure. It is advisable that the volume of the purified oil temporary storage tank of the purification box 121 be configured to be 120% of the total oil volume of a single module.

[0089] After the faulty charging module n# is replaced with a good charging module, disconnect the oil inlet line Lq that is being repaired, and reconnect the oil inlet line Lin_n and the oil outlet line Lout_n of the charging module. Open the oil inlet valve Kin_n and the oil outlet valve Kout_n through monitoring, so that the entire liquid-cooled charging system 200 can operate normally. The purified cooling oil in the purification tank 121 is injected into the charging module through the liquid storage tank 111.

[0090] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A liquid cooling heat dissipation device, characterized in that, The liquid cooling heat dissipation device applies a liquid-cooled charging system. The liquid cooling heat dissipation device includes: a liquid storage device and a purification device; wherein, the liquid storage device is used to store the heat dissipation medium, and the liquid outlet of the liquid storage device is detachably connected to the liquid inlet of multiple charging modules in the liquid-cooled charging system through multiple first liquid cooling pipelines, and the liquid inlet of the liquid storage device is detachably connected to the liquid outlet of the multiple charging modules through multiple second liquid cooling pipelines. The inlet of the purification device is detachably connected to the inlet or outlet of any of the multiple charging modules via a third liquid cooling pipeline. The purification device is used to purify the heat dissipation medium within any of the charging modules.

2. The liquid cooling heat dissipation device according to claim 1, characterized in that, The liquid storage device includes a liquid storage tank and a first liquid pump. The liquid storage tank is used to store a heat dissipation medium. The inlet of the liquid storage tank is the inlet of the liquid storage device. The outlet of the liquid storage tank is connected to the inlet of the first liquid pump. The outlet of the first liquid pump is the outlet of the liquid storage device.

3. The liquid cooling heat dissipation device according to claim 1, characterized in that, The purification device includes at least one purification chamber, which is used to purify the heat dissipation medium, and the liquid inlet of the purification chamber is the liquid inlet or liquid outlet of the purification device.

4. The liquid cooling heat dissipation device according to claim 3, characterized in that, The purification device further includes: a second liquid pump, the outlet of the second liquid pump being detachably connected to the outlet or inlet of any of the charging modules via a fourth liquid cooling pipeline; The outlet of the purification chamber is connected to the inlet of the second liquid pump, or the inlet of the second liquid pump is used to receive air.

5. The liquid cooling heat dissipation device according to claim 3, characterized in that, The outlet of the purification box is detachably connected to the inlet of the liquid storage device via a fifth liquid cooling pipe, and any of the charging modules is also provided with an air inlet.

6. The liquid cooling heat dissipation device according to claim 1, characterized in that, Each of the multiple first liquid cooling pipelines is equipped with a plurality of liquid inlet control valves, and each of the multiple second liquid cooling pipelines is equipped with a plurality of liquid outlet control valves.

7. The liquid cooling heat dissipation device according to claim 3, characterized in that, The purification chamber includes: a first storage chamber, at least one filter layer, and a second storage chamber arranged vertically in sequence. The first storage chamber is provided with a liquid inlet, and the bottom of the second storage chamber is provided with a liquid outlet. The at least one filter layer is used to filter the heat dissipation medium from the first storage chamber in sequence.

8. The liquid cooling heat dissipation device according to claim 7, characterized in that, The at least one filter layer includes: a metal interception layer, a dielectric adsorption layer, and a dielectric strengthening layer, wherein the metal interception layer is disposed at the bottom of the first storage cavity, the dielectric strengthening layer is disposed at the top of the second storage cavity, and the dielectric adsorption layer is disposed between the metal interception layer and the dielectric strengthening layer.

9. The liquid cooling heat dissipation device according to claim 3, characterized in that, The liquid outlet of the purification box can be detachably connected to an auxiliary liquid storage device.

10. A liquid-cooled charging system, characterized in that, include: At least two immersion charging modules and a liquid cooling heat dissipation device as described in any one of claims 1 to 9, wherein the charging module has a sealed housing containing an insulating coolant, and the charging module includes at least a charging module body, the charging module body being wholly or partially immersed in the insulating coolant.

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