Capacitor structure, computing device and liquid cooling system

Abstract

The embodiment of the invention provides a capacitor structure, computing equipment and a liquid cooling system. The capacitor structure comprises: a housing assembly, wherein an electrolyte is accommodated in the housing assembly; the roll core is arranged in the shell assembly, and the roll core is in contact with the electrolyte; and the filter part is arranged outside the roll core, and the filter part is used for preventing solids in the shell assembly from passing through when the shell assembly cracks and allowing gas in the shell assembly to pass through. According to the capacitor structure provided by the embodiment of the invention, internal substances can be prevented from leaking into external cooling liquid when the shell assembly is cracked, so that fault isolation in a minimum range is realized.

Description

Technical Field

[0001] The present application relates to the technical field of computing devices, and in particular to a capacitor structure, computing device and liquid cooling system. Background Art

[0002] In an immersion liquid cooling system, the entire computing device, such as a server, is immersed in a coolant, such as an electronic fluoride liquid. Among them, a common failure mode of capacitor structures in servers, such as aluminum electrolytic capacitors, is cracking of the explosion-proof valve. When the explosion-proof valve cracks, debris such as paper scraps and aluminum scraps generated by over-electrical stress inside the aluminum electrolytic capacitor will be sprayed into the coolant, causing the entire circuit board or the entire server cabinet where the capacitor is installed to be contaminated. Summary of the invention

[0003] The embodiments of the present application provide a capacitor structure, a computing device, and a liquid cooling system, which can prevent the substance inside the capacitor structure from leaking into the external coolant when the shell component of the capacitor structure is cracked, thereby achieving minimum range fault isolation.

[0004] In a first aspect, an embodiment of the present application provides a capacitor structure, comprising: a shell assembly, wherein an electrolyte is accommodated inside the shell assembly; a winding core, which is arranged inside the shell assembly and in contact with the electrolyte; and a filter element, which is arranged outside the winding core, wherein the filter element is used to prevent solid objects in the shell assembly from passing through when the shell assembly is cracked, and to allow gas in the shell assembly to pass through.

[0005] The capacitor structure of the embodiment of the present application has a filter element disposed on the outside of the winding core. Therefore, when the shell assembly of the capacitor structure cracks, it can prevent the solids inside the shell assembly from flowing out and from diffusing into the external coolant such as fluorinated liquid, thereby achieving minimum fault isolation.

[0006] In a possible implementation, the electrolyte is a solid electrolyte, the solid object includes debris formed by the core and debris formed by the solid electrolyte; the filter is disposed outside the core and the solid electrolyte. When the electrolyte is a solid electrolyte, the filter disposed outside the core and the solid electrolyte can prevent the debris formed by the core and the debris formed by the solid electrolyte from leaking.

[0007] In one possible implementation, the electrolyte is a liquid electrolyte, the filter element is disposed outside the core, and the solid object includes debris formed by the core. In another possible implementation, the electrolyte is a liquid electrolyte, the filter element is disposed outside the core and the liquid electrolyte, and the filter element is also used to prevent liquid objects in the shell assembly from passing through when the shell assembly is cracked, the liquid object includes the liquid electrolyte, and the solid object includes debris formed by the core. When the electrolyte is a liquid electrolyte, the filter element disposed outside the core and the liquid electrolyte can prevent both debris formed by the core and leakage of liquid objects, and can achieve more comprehensive fault isolation.

[0008] In one possible implementation, the electrolyte includes a solid electrolyte and a liquid electrolyte; the filter is disposed outside the core and the solid electrolyte, and the solid matter includes debris formed by the core and debris formed by the solid electrolyte. In another possible implementation, the electrolyte includes a solid electrolyte and a liquid electrolyte; the filter is disposed outside the core, the solid electrolyte, and the liquid electrolyte, and the filter is also used to prevent the liquid in the shell assembly from passing through when the shell assembly is cracked, the liquid includes a liquid electrolyte, and the solid matter includes debris formed by the core and debris formed by the solid electrolyte. When the electrolyte is a solid-liquid mixed electrolyte, the filter can be set at an appropriate position as needed, and the debris formed by the core and the debris formed by the solid electrolyte, as well as the liquid matter, can be prevented from leaking accordingly.

[0009] Exemplarily, the liquid electrolyte is located inside the winding core and between the winding core and the shell assembly; and / or the solid electrolyte is disposed inside the winding core. For example, the solid electrolyte may be wound inside the winding core and combined with the winding core; the liquid electrolyte may be located inside the winding core or between the winding core and the shell assembly.

[0010] In one possible implementation, the filter element is used to prevent the solid and liquid objects from passing through, and the filter element includes a film material. The film material can prevent liquids and solids from passing through, and allow gases to pass through; wherein, in some examples, the liquid object may be a liquid electrolyte, and in other examples, the liquid object may include a liquid product formed after electrolysis or other possible liquid substances. In another implementation, the filter element is used to prevent the solid objects from passing through, and the filter element includes a porous material or a screen. The porous material and the screen can prevent solids from passing through, and can allow liquids and gases to pass through. In addition, in other examples, the filter element can prevent at least part of the solid objects from passing through, for example, it can prevent a large volume of solid objects from passing through, but allow a smaller volume of solid objects to pass through.

[0011] In a possible implementation manner, the material of the filter element includes at least one of a conductive material, a semiconductor material, and an insulating material.

[0012] In a possible implementation, the shell assembly is provided with an explosion-proof structure, and the cracking of the shell assembly includes the cracking of the explosion-proof structure; the filter element includes a first filter element, which is arranged corresponding to the explosion-proof structure and connected to the shell assembly at the periphery of the explosion-proof structure. Since the explosion-proof structure is prone to cracking, the first filter element can be arranged corresponding to the explosion-proof structure to prevent the leakage of solid matter in the shell assembly when the explosion-proof structure cracks. In this way, the area of ​​the first filter element is small, which helps to save costs.

[0013] In a possible implementation manner, the first filter element is a plate body or a cylinder body.

[0014] In a possible implementation, the first filter element is disposed between the winding core and the explosion-proof structure in the housing assembly. In another possible implementation, the first filter element is disposed outside the housing assembly around the explosion-proof structure.

[0015] In a possible implementation, the filter element includes a second filter element, the second filter element surrounds the housing component outside the housing component, and the second filter element is connected to at least one of the housing component and the circuit board on which the capacitor structure is mounted. In order to prevent leakage of solid and / or liquid objects when the housing component cracks, the cracking of the housing component includes cracking of the explosion-proof structure and cracking of other parts except the explosion-proof structure, and the second filter element can be arranged to surround the housing component, so that the area of ​​the second filter element is larger, and the leakage of solid objects can be prevented more reliably.

[0016] In a possible implementation, the filter element includes a second filter element, and the second filter element is inside the shell assembly, wherein one of the following situations is also included: when the electrolyte is a solid electrolyte, the second filter element surrounds the core and the solid electrolyte; when the electrolyte is a liquid electrolyte, the second filter element surrounds the core or surrounds the core and the liquid electrolyte; when the electrolyte includes a liquid electrolyte and a solid electrolyte, the second filter element surrounds the core and the solid electrolyte or surrounds the core, the solid electrolyte and the liquid electrolyte. The cracking of the shell assembly includes the cracking of the explosion-proof structure and the cracking of other parts except the explosion-proof structure. The second filter element can be adaptively set in its position inside the shell assembly according to different electrolytes, which can more reliably prevent the leakage of solid objects or solid objects and liquid objects in the shell assembly.

[0017] In a possible implementation, the second filter element is a cylinder with an open end and a closed end.

[0018] In a possible implementation manner, the second filter element is connected to the housing assembly inside the housing assembly or is independently disposed relative to the housing assembly.

[0019] In one possible implementation, the shell assembly includes: a shell, which is a cylinder with an opening at one end and a closed end; and a cover body for closing the opening; wherein the explosion-proof structure of the shell assembly is arranged at the other end of the shell, and the outer periphery of the filter element is connected to or spaced apart from the side wall of the shell.

[0020] In a second aspect, an embodiment of the present application provides a computing device, which includes: the above-mentioned capacitor structure and a circuit board; the capacitor structure is arranged on the circuit board.

[0021] In a third aspect, an embodiment of the present application provides a liquid cooling system, which includes: an immersion chamber for containing a cooling liquid; and the above-mentioned computing device, which is used to be immersed in the cooling liquid in the immersion chamber.

[0022] Other features and advantages of the present invention will be described in detail in the following specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The following is a brief introduction to the drawings used in describing the embodiments.

[0024] Figure 1 It is a structural schematic diagram of a single-phase immersion liquid cooling system;

[0025] Figure 2 It is a structural schematic diagram of a phase change immersion liquid cooling system;

[0026] Figure 3 An assembly diagram of a capacitor structure provided in an embodiment of the present application;

[0027] Figure 4 for Figure 3 An exemplary decomposition structure schematic diagram of the capacitor structure shown;

[0028] Figure 5 An assembly diagram of another capacitor structure provided in an embodiment of the present application;

[0029] Figure 6 for Figure 5 A first exemplary decomposition structure schematic diagram of a capacitor structure is shown;

[0030] Figure 7 for Figure 5A second exemplary decomposition structure schematic diagram of the capacitor structure shown;

[0031] Figure 8 for Figure 5 A third exemplary decomposition structure schematic diagram of the capacitor structure shown;

[0032] Fig. 9 An assembly diagram of another capacitor structure provided in an embodiment of the present application;

[0033] Fig.10 for Fig. 9 An exemplary decomposition structure schematic diagram of the capacitor structure shown;

[0034] Fig.11 A schematic diagram of the structure of a computing device provided in an embodiment of the present application;

[0035] Fig.12 A schematic diagram of the structure of a liquid cooling system provided in an embodiment of the present application. DETAILED DESCRIPTION

[0036] The technical solutions in the embodiments of the present application will be described below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of this specification, not all of the embodiments.

[0037] In the description of this specification, "one embodiment" or "some embodiments" etc. means that one or more embodiments of this specification include a specific feature, structure or characteristic described in conjunction with the embodiment. Therefore, the phrases "in one embodiment", "in some embodiments", "in some other embodiments", "in some other embodiments", etc. appearing in different places in this specification do not necessarily refer to the same embodiment, but mean "one or more but not all embodiments", unless otherwise specifically emphasized in other ways.

[0038] In the description of this specification, unless otherwise specified, " / " means or, for example, A / B can mean A or B; "and / or" in this article is only a description of the association relationship of associated objects, indicating that there can be three relationships, for example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone. In addition, in the description of the embodiments of the present application, "multiple" means two or more than two.

[0039] In addition, in the description of this specification, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. The terms "include", "comprises", "has" and their variations all mean "including but not limited to", unless otherwise specifically emphasized.

[0040] With the evolution of Moore's Law, the power consumption of chips such as the central processing unit (CPU) of data center servers is very high. In order to cope with the problem of high energy consumption in data centers, major server manufacturers are researching immersion liquid cooling solutions with higher heat dissipation efficiency. Currently, the industry mainly uses electronic fluorinated liquid as the coolant for immersion servers. This type of coolant is non-conductive and can conduct heat well, which can greatly improve the thermal conductivity of the server, thereby reducing the energy consumption of the entire data.

[0041] Figure 1 Figure 1 is a schematic diagram of the structure of a single-phase immersion liquid cooling system. Figure 1 As shown, the liquid cooling system includes an immersion chamber 100', a server 200' and a coolant 300' disposed in the immersion chamber 100', and a plate heat exchanger 400' located outside the immersion chamber 100'. The coolant 300' is, for example, a fluorinated liquid, and in a single-phase immersion liquid cooling system, most of the coolant does not undergo phase change.

[0042] The liquid inlet of the plate heat exchanger 400' is connected to the liquid outlet of the immersion chamber 100' through the liquid inlet pipeline L1', so that the fluorinated liquid inside the immersion chamber 100' after absorbing heat enters the plate heat exchanger 400' for cooling, and the liquid outlet of the plate heat exchanger 400' is connected to the liquid inlet of the immersion chamber 100' through the liquid outlet pipeline L2', so that the cooled fluorinated liquid enters the immersion chamber 100'. The water inlet of the plate heat exchanger 400' is connected to the water inlet pipeline L3', so that cooling water enters the plate heat exchanger 400', and then cools the fluorinated liquid in the plate heat exchanger 400', and the water outlet of the plate heat exchanger 400' is connected to the water outlet pipeline L4', so that the cooling water after absorbing heat is discharged.

[0043] Figure 2 Figure 1 is a schematic diagram of the structure of a phase change immersion liquid cooling system. Figure 2As shown, the liquid cooling system includes an immersion chamber 100", a server 200" arranged in the immersion chamber 100", a coolant 300" and a condenser 400". Exemplarily, the immersion chamber 100" has a liquid inlet and a liquid outlet at the bottom, the liquid inlet pipeline L1" is connected to the immersion chamber 100" through the liquid inlet, and the liquid outlet pipeline L2" is connected to the immersion chamber 100" through the liquid outlet. The immersion chamber 100" has a water inlet and a water outlet at the top, the water inlet pipeline L3" is connected to the condenser 400" through the water inlet, and the water outlet pipeline L4" is connected to the condenser 400" through the water outlet.

[0044] The coolant 300" may be, for example, a fluorinated liquid. Moreover, in the phase change immersion liquid cooling system, the coolant 300" will undergo a phase change. For example, after a portion of the fluorinated liquid in the immersion chamber 100" absorbs the heat emitted by the server 200", fluorinated liquid vapor is formed above the immersion chamber 100", and the condenser 400" can cool the fluorinated liquid vapor to liquefy it. The water inlet pipeline L3" is connected to the condenser 400" through the water inlet outside the immersion chamber 100", and the water outlet pipeline L4" is connected to the condenser 400" through the water outlet outside the immersion chamber 100", so that the cooling water enters the condenser 400" through the water inlet pipeline L3" to absorb the heat of the fluorinated liquid vapor, and then flows out from the water outlet pipeline L4". The liquid outlet pipeline L2" is connected to the liquid outlet outside the immersion chamber 100", and the liquid inlet pipeline L1" is connected to the liquid inlet outside the immersion chamber 100". The cooling liquid 300", such as the fluorinated liquid, can enter the immersion chamber 100" through the liquid inlet pipeline L1", and can flow out of the immersion chamber 100" through the liquid outlet pipeline L2".

[0045] exist Figure 1 and Figure 2 In the immersion liquid cooling system, the entire server is immersed in fluorinated liquid. When the capacitors inside the server, such as aluminum electrolytic capacitors, crack, the debris such as paper scraps and aluminum scraps generated by overstress (EOS, which refers to the current or voltage stress of the components exceeding the maximum allowable range) inside the capacitors will be sprayed into the fluorinated liquid, causing the entire circuit board or the entire server cabinet (which may include multiple server nodes) where the capacitors are installed to be contaminated. In particular, when oversized liquid aluminum electrolytic capacitors (for example, with a size of about 30*50mm) fail, a very large range of pollution will be generated. Furthermore, since the coolants in different immersion chambers are generally mixed and redistributed at the plate heat exchanger, other server nodes (other circuit boards) or server cabinets are easily contaminated. In addition to causing large-scale pollution inside the server nodes, paper scraps, aluminum scraps, etc., even aluminum scraps will accumulate at the dense pins of the chip, causing secondary damage such as secondary short circuits.

[0046] In view of this, an embodiment of the present application provides a capacitor structure suitable for immersion liquid cooling scenarios. For example, in the immersion liquid cooling heat dissipation scenario of a data center server, it can be used in a single-phase immersion liquid cooling system or a phase change immersion liquid cooling system, and can also be used in other insulating liquid immersion liquid cooling systems. The capacitor structure of the embodiment of the present application can prevent the solid flow inside the shell component from flowing out when the shell component of the capacitor structure cracks, and avoid diffusion into an external coolant such as a fluorinated liquid, thereby achieving minimum fault isolation. In addition, the capacitor structure of the embodiment of the present application includes but is not limited to liquid aluminum electrolytic capacitors, non-solid aluminum electrolytic capacitors, solid aluminum electrolytic capacitors, film capacitors, etc., and can also be expanded to other capacitor categories or components.

[0047] Figure 3 An assembly diagram of a capacitor structure provided in an embodiment of the present application. Figure 4 for Figure 3 An exemplary decomposition structure diagram of a capacitor structure is shown in FIG. Figure 3 and Figure 4 As shown, the capacitor structure includes a housing assembly 1, a winding core 2 and a filter 3. The housing assembly 1 contains an electrolyte. The winding core 2 is disposed in the housing assembly 1, and the winding core 2 is in contact with the electrolyte. The filter 3 is disposed outside the winding core 2, and the filter 3 is used to prevent solid objects in the housing assembly 1 from passing through when the housing assembly 1 is cracked, and to allow the gas in the housing assembly 1 to pass through.

[0048] Among them, the winding core 2 may include a multi-layer winding structure formed by aluminum foil-electrolytic paper-aluminum oxide foil. The material of the filter element 3 includes at least one of a conductive material, a semiconductor material and an insulating material. For example, the material of the filter element 3 includes at least one of stainless steel and carbon fiber. For another example, the material of the filter element 3 includes at least one of a corrosion-resistant metal and a polymer that does not chemically react with the coolant. In addition, in some examples, the filter element 3 can be integrally formed. In other examples, the filter element 3 includes a plurality of partitions, and the plurality of partitions are spliced ​​and connected. Moreover, the materials of the plurality of partitions may be the same or different.

[0049] Furthermore, the electrolyte may be, but is not limited to, a solid electrolyte, a liquid electrolyte, or a combination of a solid electrolyte and a liquid electrolyte, depending on its existing state.

[0050] In the implementation mode where the electrolyte is a solid electrolyte, the filter 3 can be arranged outside the core 2 and the solid electrolyte. In this case, the solid matter includes debris formed by the core 2 and debris formed by the solid electrolyte. In this way, the filter 3 can be used to prevent the debris formed by the core 2 and the debris formed by the solid electrolyte from passing through, and can allow gas to pass through. In this case, the solid electrolyte can be wound inside the core 2.

[0051] In the implementation mode where the electrolyte is a liquid electrolyte, the filter 3 can be disposed outside the core 2, and the solid matter includes debris formed by the core 2. In this way, the filter 3 can be used to prevent the passage of debris formed by the core 2, and can allow the liquid electrolyte and gas to pass through. In other examples, the filter 3 can be disposed outside the core 2 and the liquid electrolyte, and the filter 3 is also used to prevent the passage of liquid objects in the shell assembly 1 when the shell assembly 1 cracks, the liquid objects include liquid electrolytes, and the solid objects include debris formed by the core 2. In this way, the filter 3 can be used to prevent the passage of debris and electrolyte formed by the core 2, and can allow gas to pass through. In this case, the liquid electrolyte can be located inside the core 2 and between the core 2 and the shell assembly 1.

[0052] In the implementation mode where the electrolyte includes a solid electrolyte and a liquid electrolyte, the filter 3 is disposed outside the winding core 2 and the solid electrolyte, and the solid matter includes debris formed by the winding core 2 and debris formed by the solid electrolyte. In this way, the filter 3 can be used to prevent the debris formed by the winding core 2 and the debris formed by the solid electrolyte from passing through, and can allow the liquid electrolyte and gas to pass through.

[0053] In other examples, the filter 3 is disposed outside the winding core 2, the solid electrolyte, and the liquid electrolyte. The filter 3 is also used to prevent the liquid in the shell assembly 1 from passing through when the shell assembly 1 is cracked. The liquid includes the liquid electrolyte, and the solid includes the debris formed by the winding core 2 and the debris formed by the solid electrolyte. In this way, the filter 3 can be used to prevent the debris formed by the winding core 2, the debris formed by the solid electrolyte, and the liquid electrolyte from passing through, and can allow the gas to pass through.

[0054] In this case, the solid electrolyte may be wound inside the jellyroll core 2 ; the liquid electrolyte may be located inside the jellyroll core 2 and between the jellyroll core 2 and the housing assembly 1 .

[0055] In the implementation mode in which the filter element 3 is used to prevent solids from passing through, the filter element 3 may include a porous material or a screen, for example. The size of the pores of the porous material or the screen is smaller than the size of the solids to prevent the solids from passing through. Among them, for example, the mesh number of the filter element 3 may be 10,000 meshes. The porous material and the screen may prevent solids from passing through, and may allow liquids and gases to pass through. In addition, in other examples, the filter element 3 may prevent at least some solids from passing through, for example, it may prevent large volumes of solids from passing through, but allow smaller volumes of solids to pass through.

[0056] In the implementation mode in which the filter element 3 is used to prevent solids and liquids from passing through, the filter element 3 may include a film material, for example. The film material may prevent liquids and solids from passing through, and allow gas to pass through; wherein, in some examples, the liquid may be a liquid electrolyte, and in other examples, the liquid may include a liquid product formed by an electrolytic reaction.

[0057] In addition, in some examples, such as Figure 3 and Figure 4 As shown, the housing assembly 1 includes a shell 11 and a cover 12. Exemplarily, the shell 11 can be an aluminum shell, and the cover 12 can be made of rubber. The shell 11 is a cylinder, and has an opening at one end and is closed at the other end. The cover 12 is used to close the opening, and epoxy glue can be used to seal the cover 12 and the shell 11. Among them, the explosion-proof structure F of the housing assembly 1 is arranged at the other end (i.e., the closed end) of the shell 11, and the periphery of the filter element 3 is connected to the side wall of the shell 11 or is spaced apart.

[0058] The capacitor structure of the embodiment of the present application has a filter element disposed on the outside of the winding core. Therefore, when the shell assembly of the capacitor structure cracks, it can prevent the solids inside the shell assembly from flowing out and from diffusing into the external coolant such as fluorinated liquid, thereby achieving minimum fault isolation.

[0059] Figure 5 An assembly diagram of another capacitor structure provided in an embodiment of the present application. Figure 6 for Figure 5 The first exemplary decomposition structure diagram of the capacitor structure is shown in FIG. Figures 3 to 6 As shown, an explosion-proof structure F is provided on the housing assembly 1, and the explosion-proof structure F may be a gap or a groove. Optionally, the explosion-proof structure F may also be an explosion-proof valve. The cracking of the housing assembly 1 includes the cracking of the explosion-proof structure F. The filter element 3 includes a first filter element 3a, which is provided corresponding to the explosion-proof structure F and is connected to the outer shell 11 at the periphery of the explosion-proof structure F.

[0060] For example, the first filter element 3a may be a plate or a cylinder, wherein the plate may be a flat plate or a curved plate, and the cylinder may be, for example, cylindrical. Figure 3 and Figure 4 In the embodiment, the first filter element 3a is arranged outside the housing 11, and the first filter element 3a is cylindrical. Figure 6 In the embodiment, the first filter element 3a is a flat plate, and the first filter element 3a is disposed between the winding core 2 and the explosion-proof structure F in the housing assembly 1, and covers the top of the winding core 2. The first filter element 3a is disposed at a position corresponding to the explosion-proof structure F, so that the leakage of solid and / or liquid objects can be prevented by the smaller first filter element.

[0061] Figure 7 for Figure 5 A second exemplary decomposition structural diagram of a capacitor structure is shown. Figure 8 for Figure 5 A third exemplary decomposition structure diagram of the capacitor structure is shown. Figure 7 and Figure 8As shown, the filter element 3 includes a second filter element 3b, which is inside the housing assembly 1 and can be connected to the housing assembly 1 or independently arranged. Figure 7 In the embodiment, the second filter element 3b and the housing 11 are separately provided and the two are not connected. Figure 8 In the embodiment, the second filter element 3b is connected to the housing 11 to form a composite structure. The second filter element 3b and the housing 11 can be connected by at least one of gluing, welding, clamping or other mechanical fastening methods. Specifically, the second filter element 3b can be fixed to the inner surface of the housing 11 by glue dispensing. Figure 8 In the figure, in order to show the second filter element 3b, the housing 11 is drawn in perspective.

[0062] Exemplarily, the second filter element 3b includes an open accommodation space. The second filter element 3b is disposed inside the housing 11, the winding core 2 is disposed in the accommodation space, and the open end of the second filter element 3b can be closed by the cover 12. The second filter element 3b can be connected to the housing 11 to form a composite structure, or the second filter element 3b can be not connected to the housing 11, but as an independent component.

[0063] And, in Figure 7 and Figure 8 In the capacitor structure shown, when the electrolyte is a solid electrolyte, the second filter element 3b surrounds the core 2 and the solid electrolyte, and the second filter element 3b is used to prevent solid objects in the shell component 1 from passing through when the shell component 1 is cracked. The solid objects may include debris formed by the core 2 and debris formed by the solid electrolyte; when the electrolyte is a liquid electrolyte, the second filter element 3b surrounds the core 2, and the second filter element 3b is used to prevent solid objects in the shell component 1 such as debris formed by the core 2 from passing through when the shell component 1 is cracked, or the second filter element 3b surrounds the core 2 and the liquid electrolyte, and the second filter element 3b is used to prevent solid objects in the shell component 1 such as debris formed by the core 2 and liquid objects such as the liquid electrolyte from passing through when the shell component 1 is cracked. In some examples, the liquid may also include a liquid product formed by an electrolytic reaction; in the case where the electrolyte includes a liquid electrolyte and a solid electrolyte, the second filter element 3b surrounds the core 2 and the solid electrolyte, and the second filter element 3b is used to prevent solid matter in the shell component 1 from passing through when the shell component 1 is cracked. The solid matter may include debris formed by the core 2 and debris formed by the solid electrolyte, or the second filter element 3b surrounds the core 2, the solid electrolyte and the liquid electrolyte, and the second filter element 3b is used to prevent solid matter such as debris formed by the core 2, debris formed by the solid electrolyte and liquid matter such as a liquid electrolyte from passing through when the shell component 1 is cracked. In some examples, the liquid may also include a liquid product formed by an electrolytic reaction.

[0064] Fig. 9This is an assembly diagram of another capacitor structure provided in an embodiment of the present application. Fig.10 for Fig. 9 An exemplary decomposition structure diagram of a capacitor structure is shown in FIG. Fig. 9 and Fig.10 As shown, the filter element 3 includes a second filter element 3b, which surrounds the housing assembly 1 outside the housing assembly 1, and is connected to at least one of the housing assembly 1 and a circuit board on which the capacitor structure is mounted.

[0065] Exemplarily, the second filter element 3b includes an open accommodation space. The housing assembly 1 and the winding core 2 are disposed in the accommodation space of the second filter element 3b. The open end of the second filter element 3b may be closed by a circuit board (not shown) with a capacitor structure installed thereon. Alternatively, in order to prevent solid matter or solid matter and liquid matter from leaking from the open end of the second filter element 3b and the housing 11, the open end of the second filter element 3b may be connected to the outer surface of the housing 11. Fig.10 As shown, the second filter element 3b is separately provided with the housing 11, and in this case, the open end of the second filter element 3b can be connected with the circuit board. In other embodiments, the second filter element 3b can be connected with the housing 11 to form a composite structure.

[0066] exist Figures 7 to 10 In the embodiment, the second filter element 3b can be a cylinder, one end of which is open to form an opening, and the other end is closed. Figures 3 to 10 As shown, the housing 11 may be a column, the cover 12 is arranged at one end of the housing 11, and the explosion-proof structure F is arranged at the other end of the column. In some examples, the first filter element 3a and the second filter element 3b may be connected to the side wall of the housing 11 whether inside or outside the housing assembly 1; in other examples, the first filter element 3a may be spaced apart from the side wall of the housing 11 whether inside or outside the housing assembly 1, and in this case, the first filter element 3a may be connected to the inner wall or outer wall of the closed end of the housing 11. The second filter element 3b may be spaced apart from the side wall of the housing 11 whether inside or outside the housing assembly 1. In addition, the second filter element 3b may not be fixed when inside the housing assembly 1, and the second filter element 3b may be connected to the circuit board when outside the housing assembly 1. That is, the periphery of the filter element 3 is connected to or spaced apart from the side wall of the housing 11.

[0067] In addition, Figure 3 , Figure 4 , Figures 7 to 10 In the embodiment, the housing 11, the winding core 2, and the filter element 3 are all cylindrical. In other examples, the housing 11, the winding core 2, and the second filter element 3b may be in other shapes, such as a cuboid. The filter element 3 may be connected to other components (such as at least one of the housing 11 and the circuit board) by at least one of gluing, welding, and clamping.

[0068] Fig.11 A schematic diagram of the structure of a computing device provided in an embodiment of the present application. Fig.11 As shown, the computing device includes a circuit board 20 and the above-mentioned capacitor structure 10. The capacitor structure 10 is arranged on the circuit board 20. Exemplarily, the computing device may be a server or a high performance computing cluster (HPC).

[0069] Fig.12 This is a schematic diagram of the structure of a liquid cooling system provided in an embodiment of the present application. Fig.12 As shown, the liquid cooling system includes an immersion chamber 100 and at least one computing device 200 as described above. The immersion chamber 100 is used to contain a cooling liquid 300. The at least one computing device 200 is immersed in the cooling liquid 300 in the immersion chamber 100.

[0070] The cooling liquid 300 may be a fluorinated liquid. The liquid cooling system may be a single-phase fluorinated liquid immersion cooling system or a two-phase fluorinated liquid immersion cooling system. In other examples, the liquid cooling system of the embodiment of the present application may also be other insulating liquid immersion cooling systems.

[0071] Further, the immersion chamber 100 may have a liquid inlet and a liquid outlet. The liquid cooling system further includes a heat exchanger (not shown in the figure), which is connected to the liquid inlet and the liquid outlet and is used to cool the cooling liquid 300 after absorbing the heat emitted by the computing device through a cooling medium from a cold source. The cold source may be a cooling tower, and the cooling medium may be water.

[0072] In summary, in the immersion liquid cooling use scenario of data center servers, for example, in systems using single-phase electronic fluorinated liquid (such as Figure 1 as shown) or systems using phase-change electronic fluorinated fluids (such as Figure 2 As shown in the figure, paper scraps, aluminum scraps, etc. formed when the capacitor structure cracks will cause large-scale pollution inside the current server node, and even aluminum scraps will accumulate at the dense pins of the chip, causing secondary damage such as secondary short circuit. By adopting the capacitor structure of the embodiment of the present application, the filter element provided therein can be used as a protective structure to avoid the outflow of solid foreign matter from the winding core into the fluorinated liquid after the capacitor fails and cracks, thereby achieving fault isolation in the smallest range, avoiding large-scale pollution inside the current server node caused by paper scraps, aluminum scraps, etc., and preventing aluminum scraps from accumulating at the dense pins of the chip, causing secondary damage such as secondary short circuit.

[0073] In addition, the capacitor structure immersed in the coolant can maintain good sealing, preventing the electrolytic paper, alumina foil, and aluminum foil of the core from burning under over-electric stress and spreading to the external coolant and circuit board, achieving the smallest range of fault isolation, avoiding contamination of the entire server node or other server nodes, and improving the interception effect. Furthermore, since the common failure modes of high-voltage, large-size, and large-capacity capacitor structures are cracking and bursting of explosion-proof structures, filtering protection can be performed on the capacitor body to reduce the filtering difficulty of the entire system and improve the filtering effect.

[0074] Exemplarily, the filter element may be a screen, and the outer shell may be an aluminum shell. The screen can prevent the solid matter inside the aluminum shell from leaking out with the internal working liquid after the capacitor cracks. In some examples, the screen can be a 10000 mesh stainless steel screen or a 10000 mesh carbon fiber screen. The size of the capacitor structure may be, for example, 30mm*50mm. The capacitor structure may be, for example, a liquid aluminum electrolytic capacitor. Based on the liquid aluminum electrolytic capacitor process, the winding core may be a multilayer winding structure of aluminum foil-electrolytic paper-aluminum oxide foil. Among them, the capacitor structure may have but is not limited to the following three schemes:

[0075] Solution 1: The screen is set between the outer aluminum shell and the inner winding core, that is, the capacitor structure includes the outermost aluminum shell, the middle layer of the screen, and the innermost winding core. When manufacturing this capacitor structure, the screen can be placed in the aluminum shell, and then the winding core can be placed in the screen. Then, the aluminum shell can be sealed by a cover, such as a rubber plug, and epoxy glue can be applied around the rubber plug to strengthen the seal.

[0076] Solution 2: The capacitor structure may include a composite structure of an aluminum shell and a screen, and the screen may be fixed to the inner surface of the aluminum shell by at least one of glue dispensing, welding, and clamping. When manufacturing the capacitor structure, the winding core may be placed in the composite structure of the aluminum shell and the screen; the aluminum shell is then sealed by a cover, such as a rubber plug, and epoxy glue is applied around the rubber plug to strengthen the seal.

[0077] Solution 3: The screen can be placed in the outermost layer, the aluminum shell in the middle layer, and the winding core in the innermost layer. When manufacturing this capacitor structure, the winding core can be placed inside the aluminum shell, and then the aluminum shell is sealed by a cover such as a rubber plug, and epoxy glue is applied around the rubber plug to strengthen the seal. Then, the aluminum shell is welded to the printed circuit board, and then the screen is put on the outer surface of the aluminum shell, and the screen can be fixed to the outer surface of the aluminum shell by dispensing glue or welding, or the screen can be welded to the printed circuit board.

[0078] That is to say, in some examples, the aluminum shell is the outermost layer, the screen is the middle layer, and the core is the innermost layer. In this case, the screen can be directly sleeved on the core, or the screen can be directly sleeved on the inner surface of the aluminum shell. The screen can be used as an independent component or form a composite structure with the aluminum shell. In addition, the screen can be installed on the internal core or the aluminum shell by welding, mechanical fastening or gluing. In other examples, the screen is the outermost layer, the aluminum shell is the middle layer, and the core is the innermost layer. The screen can be sleeved on the outer surface of the aluminum shell, and the screen can be installed on the aluminum shell or the printed circuit board by welding, mechanical fastening or gluing.

[0079] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, and do not limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A capacitor structure, characterized in that: include: A shell component, wherein the shell component contains an electrolyte; A winding core is disposed in the housing assembly and the winding core is in contact with the electrolyte; and A filter element is arranged outside the winding core, and is used to prevent solid objects in the shell assembly from passing through when the shell assembly is cracked, and to allow gas in the shell assembly to pass through.

2. The capacitor structure according to claim 1, characterized in that: The electrolyte is a solid electrolyte, the solid matter includes debris formed by the winding core and debris formed by the solid electrolyte; the filter is arranged outside the winding core and the solid electrolyte.

3. The capacitor structure according to claim 1, characterized in that: The electrolyte is a liquid electrolyte, wherein: The filter element is disposed outside the roll core, and the solid matter includes debris formed by the roll core; or, The filter element is arranged outside the winding core and the liquid electrolyte, and is also used to prevent liquid in the shell assembly from passing through when the shell assembly is cracked. The liquid includes the liquid electrolyte, and the solid includes debris formed by the winding core.

4. The capacitor structure according to claim 1, characterized in that: The electrolyte includes a solid electrolyte and a liquid electrolyte; wherein: The filter element is disposed outside the winding core and the solid electrolyte, and the solid matter includes debris formed by the winding core and debris formed by the solid electrolyte; or, The filter element is arranged outside the winding core, the solid electrolyte and the liquid electrolyte. The filter element is also used to prevent liquid objects in the shell assembly from passing through when the shell assembly is cracked. The liquid objects include liquid electrolytes, and the solid objects include debris formed by the winding core and debris formed by the solid electrolyte.

5. The capacitor structure according to any one of claims 1 to 4, characterized in that: An explosion-proof structure is provided on the shell assembly, and cracking of the shell assembly includes cracking of the explosion-proof structure; The filter element includes a first filter element, which is arranged corresponding to the explosion-proof structure and connected to a shell component at the periphery of the explosion-proof structure.

6. The capacitor structure according to any one of claims 1 to 5, characterized in that: The filter element includes a second filter element, the second filter element surrounds the housing component outside the housing component, and the second filter element is connected to at least one of the housing component and a circuit board on which the capacitor structure is mounted.

7. The capacitor structure according to any one of claims 1 to 5, characterized in that: The filter element includes a second filter element, and the second filter element is connected to the housing component inside the housing component or is independently arranged relative to the housing component, wherein one of the following situations is also included: In the case where the electrolyte is a solid electrolyte, the second filter element surrounds the winding core and the solid electrolyte; In the case where the electrolyte is a liquid electrolyte, the second filter element surrounds the winding core or surrounds the winding core and the liquid electrolyte; In the case where the electrolyte includes a liquid electrolyte and a solid electrolyte, the second filter surrounds the winding core and the solid electrolyte or surrounds the winding core, the solid electrolyte and the liquid electrolyte.

8. The capacitor structure according to any one of claims 1 to 7, characterized in that: The housing assembly comprises: A housing, wherein the housing is a cylinder with an opening at one end and a closed end at the other end; and A cover body, used for closing the opening; The explosion-proof structure of the housing assembly is arranged at the other end of the shell, and the outer periphery of the filter element is connected to or spaced from the side wall of the shell.

9. A computing device, characterized in that include: The capacitor structure according to any one of claims 1 to 8; and A circuit board, wherein the capacitor structure is arranged on the circuit board.

10. A liquid cooling system, characterized in that: include: an immersion chamber for containing a coolant; and The computing device of claim 9, adapted to be immersed in the cooling liquid within the immersion chamber.

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