CN116075042A - Computing device, computing node and circuit board - Google Patents

Abstract

The embodiment of the application discloses a computing device, a computing node and a circuit board, wherein the circuit board can be a hardware single board or can be applied to the computing nodes such as a server node. The circuit board comprises a board body, wherein the board body is provided with an anode power distribution port and a cathode power distribution port. The plate body is also provided with a groove body, the groove body is provided with an extending direction and a width direction, the width direction is perpendicular to the extending direction, and the positive electrode power distribution port and the negative electrode power distribution port are respectively positioned on two sides of the groove body in the width direction. In the scheme, the groove body can separate the positive electrode power distribution port from the negative electrode power distribution port, so that ion migration phenomenon caused by liquid soaking or high-humidity environment or other factors can be blocked as much as possible, and further, the problem of short circuit caused by ion migration can be avoided to a greater extent.

Description

Computing device, computing node and circuit board

technical field

The embodiments of the present application relate to the technical field of computing devices, and in particular, to a computing device, a computing node, and a circuit board.

Background technique

A computing device, such as a server, includes two or more computing nodes. The circuit boards of each computing node are provided with power distribution ports, and the power distribution ports of each circuit board are connected to the 48V bus. In actual use, any short circuit on the power distribution port of any circuit board will cause the bus to be pulled down, which will cause other computing nodes to fail to work, seriously affecting the normal operation of computing equipment.

In response to this, the current mainstream solution in the industry is to spray conformal paint (acrylate, silicone, polyurethane conformal paint) on the surface of the circuit board, so that the circuit board can have better waterproof and moisture-proof performance. However, power distribution The ports are mainly OT terminals plugged into the circuit board, and the conformal paint cannot effectively cover the power distribution ports. In this way, when the computing device is used in an environment with high humidity or liquid leakage, for example, in a liquid-cooled environment, a short circuit problem may still occur at the power distribution ports of the positive and negative electrodes of the circuit board.

Therefore, how to provide a solution to better overcome or alleviate the above defects is still a technical problem to be solved urgently by those skilled in the art.

Contents of the invention

Embodiments of the present application provide a computing device, a computing node, and a circuit board, wherein the risk of a short circuit of the circuit board is relatively low.

In a first aspect, an embodiment of the present application provides a circuit board, which may be a hardware single board, and may also be applied to a computing node such as a server node. The above-mentioned circuit board includes a board body, and the board body is provided with a positive power distribution port and a negative power distribution port. The plate body is also provided with a groove body, the groove body has an extension direction and a width direction, the width direction and the extension direction are perpendicular to each other, and the positive power distribution port and the negative power distribution port are respectively located on both sides of the width direction of the groove body.

With this scheme, the tank body can separate the positive power distribution port and the negative power distribution port, which can block the ion migration phenomenon caused by liquid immersion or high humidity environment or other factors as much as possible, and then can To avoid the short circuit problem caused by ion migration.

Based on the first aspect, the embodiment of the present application also provides a first implementation manner of the first aspect: the groove body also has a depth direction, and the groove body can penetrate the plate body in the depth direction.

In this implementation mode, in the depth direction, the groove body is designed as a through-type, which has a good diversion effect. The groove body can guide the liquid flowing to the surface of the circuit board along the depth direction, so as to timely dissipate the liquid Leading out the circuit board in the depth direction can largely avoid the long-term accumulation of liquid on the circuit board, thereby avoiding the direct connection of the liquid to the positive power distribution port and the negative power distribution port, and the resulting short circuit problem. At the same time, the timely export of liquid is also conducive to building a relatively dry environment for the circuit board, which itself is also beneficial to suppress ion migration.

Based on the first implementation of the first aspect, the embodiment of the present application also provides a second implementation of the first aspect: the plate body has two surfaces, the two surfaces are respectively the liquid-facing surface and the liquid-back surface, and the liquid-facing surface The liquid surface and the back liquid surface are arranged oppositely in the depth direction. In specific applications, the liquid facing surface can be close to the cold source (such as a cold plate), and the back liquid surface can be away from the cold source. When the cold source leaks, the liquid in the cold source The liquid will preferentially leak to the liquid-facing surface; in the direction from the back liquid surface to the liquid-facing surface, the width of the tank body gradually increases, so that the opening size of the tank body on the liquid-facing surface is larger, which is conducive to the liquid flowing into the tank body, and , the tapering setting of the width of the tank body can also enhance the diversion effect, so that the liquid can be introduced into the tank body more smoothly.

Based on the second implementation of the first aspect, the embodiment of the present application also provides a third implementation of the first aspect: the minimum width of the groove body is greater than the preset width, and the preset width is between 3 mm and 7 mm. In this way, The size of the narrow mouth of the groove body can be relatively large, which can increase the smoothness of the liquid leaving the circuit board from the depth direction; and/or, the groove body has two groove side walls arranged oppositely in the width direction, and the two groove side walls Among them, at least one groove side wall and the depth direction form a preset included angle, and the preset included angle is between 5°-10°, so as to ensure the effect of diversion.

In practice, a hydrophobic coating can also be provided on the inner wall of the tank body. The hydrophobic coating can be specifically three anti-paints, etc., which can reduce the corrosion of the liquid on the inner wall of the tank and ensure the shape of the inner wall of the tank. It can ensure the diversion and drainage functions of the tank body.

Based on the first aspect, or any one of the first to third implementations of the first aspect, the embodiment of the present application also provides a fourth implementation of the first aspect: the plate body has a thickness direction, The thickness direction is also the depth direction of the tank body; the plate body has two opposite surfaces in the thickness direction, and a side wall connecting the two surfaces, and the tank body can extend to the side wall surfaces. In this way, the groove body can also have a better diversion effect, and the groove body can guide the liquid flowing to the surface of the circuit board along its extending direction, so that the liquid can be led out of the circuit board from the extending direction in time, and the Avoid long-term accumulation of liquid on the circuit board, thereby avoiding the direct connection of liquid to the positive power distribution port and the negative power distribution port to a large extent, and the resulting short circuit problem. At the same time, the timely export of liquid can also create a relatively dry environment for the circuit board, which itself is also beneficial to suppress ion migration.

Based on the first aspect, or any one of the first to third implementations of the first aspect, the embodiment of the present application also provides a fifth implementation of the first aspect: the surface of the board is laid with Conductive material, and/or, conductive material is buried inside the board; the conductive material forms a functional circuit, the functional circuit includes a slow start circuit unit and a power conversion circuit unit, and the positive power distribution port and the negative power distribution port are connected to the slow start circuit unit , the slow start circuit unit is connected with the power conversion circuit unit.

In specific use, the slow start circuit unit can delay the power-on time of the circuit board, thereby reducing the influence of the unstable contact connection between the positive power distribution port, the negative power distribution port and the 48V bus, and reducing the power-on time. current shock. At the same time, the above-mentioned slow-start circuit unit can also play the role of slow-start isolation, which can effectively isolate the influence of the short circuit of the positive power distribution port and the negative power distribution port on the power conversion circuit unit. The power conversion circuit unit is used to realize power conversion, and can convert the voltage of the 48V bus into required voltages, such as 12V, 5V, 3.3V, etc.

In some embodiments, the number of the above-mentioned tank body may be one or more. When there are multiple tank bodies, each tank body can be arranged at intervals in the width direction of the tank body, and each tank body can be located between the positive power distribution port and the negative power distribution port. Multiple barriers are formed between the electrical port and the negative power distribution port, the possibility of ion migration can be lowered, the diversion effect of the tank can be better, and the accumulation of liquid on the surface of the plate can be better avoided.

In the second aspect, the embodiment of the present application also provides a computing node, which may specifically be a server node, etc., including a circuit board and an electronic device, the electronic device is mounted on the circuit board, and the circuit board is the first aspect or the first aspect The circuit board according to each embodiment.

As mentioned above, the circuit boards involved in the first aspect or various implementations of the first aspect are arranged with slots, which can reduce the risk of short circuit. It is beneficial to ensure the stable operation of the circuit board for a long time.

Based on the second aspect, the embodiment of the present application also provides the first implementation manner of the second aspect: the plate body has two surfaces, the two surfaces are respectively the liquid-facing surface and the liquid-back surface, and the liquid-facing surface and the liquid-back surface The plate body is relatively arranged in the thickness direction, and the plate body also includes a side wall surface connecting the liquid facing surface and the liquid back surface; the groove body runs through the plate body in the thickness direction, and/or the groove body extends to the side wall surface; the calculation node also Including the cold plate, the cold plate and the liquid-facing surface are arranged oppositely or fit together.

In actual use, the cold plate can be attached to the liquid-facing surface of the plate body to provide liquid cooling services for the circuit board. In this case, once the heat pipe in the cold plate bursts and the heat exchange medium leaks, the leaked heat exchange medium can flow along the liquid-facing surface and guide the heat exchange medium through the tank , so that the heat exchange medium is separated from the circuit board, so as to avoid soaking the positive and negative power distribution ports on the circuit board; moreover, the timely export of the heat exchange medium can also create a relatively dry environment for the circuit board. The use environment, which itself is also beneficial to suppress ion migration. With such setting, the problem of short circuit on the circuit board can be avoided to a large extent, which is beneficial to ensure the stability of the computing node.

Based on the first implementation of the second aspect, the embodiment of the present application also provides a second implementation of the second aspect: the computing node may further include a casing, and the casing may be provided with a liquid collection tank, and the liquid flowing out of the tank It can enter into the liquid collection tank for collection, so that it can avoid the overflow of liquid and affect the normal work of other components.

In the third aspect, the embodiment of the present application also provides a computing device, which can be specifically a server, etc., including a cabinet and a computing node, the computing node is installed in the cabinet, the computing node is the computing node involved in the second aspect, and the short-circuit risk of the computing node Correspondingly, the short-circuit risk of the computing device is also low, and the working stability of the computing device can be high.

In practice, the cabinet may be provided with a diversion pipeline connected with the liquid collection tank, so as to discharge the liquid collected in the liquid collection tank in time, thereby avoiding the phenomenon that the liquid in the liquid collection tank overflows.

Description of drawings

FIG. 1 is a schematic structural diagram of a specific implementation of a computing device provided in an embodiment of the present application;

FIG. 2 is a schematic structural view of a specific implementation of the circuit board provided in the embodiment of the present application;

Fig. 3 is a partial sectional view in the A-A direction of an embodiment of Fig. 2;

Fig. 4 is a partial cross-sectional view along the direction A-A of another embodiment of Fig. 2 .

The reference signs are explained as follows:

100 computing equipment, 110 cabinets, 111 cabinet doors;

200 computing nodes;

300 circuit board, 310 board body, 311 tank body, 311a tank side wall, 311b wide mouth, 311c narrow mouth, 312 liquid facing surface, 313 back liquid surface, 314 side wall surface, 320 positive power distribution port, 330 negative power distribution port , 340 functional circuit, 341 slow start circuit unit, 342 power conversion circuit unit.

Detailed ways

In order to enable those skilled in the art to better understand the technical solutions of the present application, the present application will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

In the description of the embodiments of this application, it should be noted that unless otherwise specified and limited, the terms "installation", "connection" and "connection" should be interpreted in a broad sense, for example, "connection" can be detachable The connection can also be non-detachable connection; it can be a direct connection or an indirect connection through an intermediary.

In the description of the embodiments of the present application, the term "comprising", "comprising" or any other variation thereof is intended to cover a non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, It also includes other elements not expressly listed, or elements inherent in the process, method, article, or device. Without further limitations, an element defined by the phrase "comprising a ..." does not preclude the presence of additional identical elements in the process, method, article, or apparatus comprising that element.

In the embodiment of this application, "and/or" is just a kind of relationship describing the relationship between related objects, which means that there may be three kinds of relationships, for example, A and/or B, which can mean that A exists alone, and A and B exist at the same time. B, there are three situations of B alone. In addition, the character "/" in this article generally indicates that the contextual objects are an "or" relationship.

With the rapid development of communication technology, Internet service providers, enterprises, and research institutions have generally begun to build data centers (also called computing clusters) that carry storage, computing, and transmission functions to meet the demand for data usage. The structure of the data center can be varied.

In some embodiments, the data center may include a computer room and at least one computing device, and the computing device may specifically be a server or the like. The computer room is used to provide an isolated environment for the data center to isolate computing equipment from the outside world. It can be a permanent housing built, or a temporary housing such as a tent or a board room, or it can also be a container. , cargo boxes and other carrier devices that can provide accommodation space.

In a specific application, at least one side wall of the computer room may be provided with an access door, so as to facilitate staff and the like to enter and exit the data center. The specific structural form, opening and closing methods, and opening and closing control strategies of the entrance and exit doors are not limited here, as long as the technical effect of staff entering and exiting the data center can be realized.

Please refer to FIG. 1 , which is a schematic structural diagram of a specific implementation manner of a computing device provided in an embodiment of the present application.

As shown in FIG. 1 , in some embodiments, a computing device 100 includes a cabinet 110 and a computing node 200 , and the computing node 200 may specifically be a server node or the like. A mounting member (not shown in the figure) may be provided in the cabinet 110 for carrying and assembling the computing node 200 inside the cabinet 110 .

Here, the embodiment of the present application does not limit the structural form of the installation component, as long as it can meet the assembly requirements of the computing node 200 inside the cabinet 110 . Exemplarily, the mounting member may be a support plate provided on the inner wall of the cabinet 110, and then, the computing node 200 may be fixed to the support plate by means of bolts or other connectors; or, the computing node 200 may also be slidably mounted on the supporting plate The board, for example, can be equipped with rollers on the computing node 200 , and the rollers can slide along the supporting board to facilitate installation and removal of the computing node 200 .

In some embodiments, the number of computing nodes 200 may be two or more, and each computing node 200 may be distributed in different positions in the cabinet 110 . Exemplarily, each computing node 200 may be distributed layer by layer inside the cabinet 110 , and this implementation manner may refer to FIG. 1 .

The cabinet 110 may be configured with a cabinet door 111 , and when the cabinet door 111 is opened, the interior of the cabinet 110 may be exposed to facilitate installation, repair, replacement and maintenance of each computing node 200 . The number of cabinet doors 111 may not be limited, which is specifically related to the structural form and size of the cabinet 110 . The opening and closing methods of the cabinet door 111 include but are not limited to rotary opening and closing, push-pull opening and closing, rolling opening and closing, and the like. The locks required for the cabinet door 111 can refer to related technologies, and are not limited here.

It should be understood that the cabinet door 111 is not a required component of the computing device 100. In other embodiments of the present application, the cabinet door 111 may not exist. At this time, each computing node 200 may be directly exposed to the cabinet 110. It is also possible to conveniently operate each computing node 200 .

Compute node 200 includes a housing (not shown in the figure). The structural shape of the shell basically determines the structural shape of the computing node 200 . In some embodiments, the casing basically presents a cuboid structure, and accordingly, the computing node 200 also basically presents a cuboid structure. Of course, in some other embodiments, the housing can also be in other structural shapes, such as a cylinder, etc., which needs to be determined in combination with the actual use environment.

A circuit board and at least one electronic device are arranged in the casing. The types of electronic devices are not limited here, and are specifically related to the functions to be realized by the computing node 200 itself; in some embodiments, the electronic devices may include power supplies, fans, processors, hard disks, and memory sticks. The circuit board can specifically be a printed circuit board (Printed Circuit Board, PCB), which is equipped with a processor, memory stick, etc.; the core in the processor can be, for example, a central processing unit (Central Processing unit, CPU), or it can be Other specific integrated circuits (Application Specific Integrated Circuit, ASIC), or the processor can also be other general processors, digital signal processing (digital signal processing, DSP), application specific integrated circuits (application specific integrated circuit, ASIC), field programmable Gate array (field programmable gate array, FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc.; in practical applications, the computing node 200 may also include two or more processors. The power supply, the fan, and the hard disk are all fixedly installed inside the casing, and can be electrically connected to the circuit board through connectors, cables, riser cards, and other connectors.

Computing device 100 is also configured with a 48V bus. The circuit board is provided with a positive power distribution port and a negative power distribution port, and the positive power distribution port and the negative power distribution port of each computing node 200 are connected to the 48V bus. As mentioned in the background technology section, when this solution is adopted, a short circuit occurs between the positive power distribution port and the negative power distribution port of any one computing node 200, which will cause the bus to be pulled down, which will cause other computing nodes 200 to be unable to carry out work, seriously affecting the normal operation of the computing device 100.

In particular, the above phenomenon is more significant when the computing device 100 is used in an environment with high humidity or prone to liquid leakage. Exemplarily, when the computing device 100 is a cold-plate type liquid-cooled server, the heat pipes arranged in the cold plate are usually set against the circuit board so as to better provide heat dissipation for the circuit board; in this case, once the heat pipe bursts and other accidents, the heat exchange medium in the heat pipe will leak, then flow to the circuit board, and spread along the surface of the circuit board to cover the positive power distribution port and/or the negative power distribution port. The soaked power distribution port is prone to ion migration, which makes an electrical connection between the originally spaced positive power distribution port and negative power distribution port, which will cause a short circuit fault.

Please refer to FIG. 2 and FIG. 3. FIG. 2 is a schematic structural diagram of a specific implementation of the circuit board provided in the embodiment of the present application, and FIG. 3 is a partial cross-sectional view of an implementation in FIG. 2 along the direction A-A.

As shown in Figure 2, the embodiment of the present application also provides a circuit board 300, including a board body 310, the board body 310 is a plate-shaped structure, which is the substrate of the circuit board 300, specifically epoxy resin, phenolic resin, etc. Preparation of insulating materials to ensure insulation performance. In some embodiments, reinforcing materials in the form of paper base, glass cloth, etc. can also be added to improve the structural strength of the board body 310; the board body 310 has a thickness direction; the board body 310 is set There are a positive power distribution port 320 and a negative power distribution port 330, both of which can use OT terminals, and the OT terminals can be fixedly assembled on the board body 310 by means of plugging, welding, etc.; The body 310 is also provided with a groove body 311, the groove body 311 has an extension direction and a width direction, the extension direction and the width direction are both perpendicular to the thickness direction of the plate body 310, and the width direction and the extension direction are perpendicular to each other, and the positive power distribution port 320 and the negative power distribution port 330 are respectively located on both sides of the slot body 311 in the width direction.

With this solution, the above-mentioned tank body 311 can separate the positive power distribution port 320 and the negative power distribution port 330, which can block the ion migration phenomenon caused by liquid immersion or high humidity environment as much as possible, and thus can be larger Minimize the short-circuit problem caused by ion migration.

For the convenience of description, an XYZ rectangular coordinate system can be constructed. Specifically, as shown in FIG. 2 and FIG. 3 , in the embodiment of the present application, the width direction of the groove body 311 may be the X-axis direction, and the X-axis direction is also the width direction of the circuit board 300, and the positive power distribution port 320 and The negative power distribution port 330 can be distributed on both sides of the tank body 311 in the X-axis direction; and the length direction of the circuit board 300 is the Y-axis direction, and the tank body 311 can specifically extend in the Y-axis direction. Of course, the tank body 311 The angle between the extension direction and the Y-axis direction can also be set, as long as the groove body 311 can separate the positive power distribution port 320 and the negative power distribution port 330, or, in some other embodiments, the groove The extending direction of the body 311 can also be non-linear, which is also feasible; and the depth direction of the groove body 311 is the Z-axis direction, and the Z-axis direction is also the thickness direction of the circuit board 300 .

The plate body 310 includes two opposite surfaces in the Z-axis direction, and a side wall surface 314 arranged around the Z-axis direction, and the side wall surface can connect the two surfaces. In the embodiment of FIG. 2 , the plate body 310 is basically a rectangular plate. At this time, the number of side wall surfaces 314 can be four, and two of the four side wall surfaces 314 are arranged opposite to each other in the X-axis direction, and four The other two of the side wall surfaces 314 are oppositely disposed in the Y-axis direction. Of course, in some other embodiments, the plate body 310 can also be in other shapes, for example, the plate body 310 can also be a circular plate, an L-shaped plate or some other special-shaped plates, etc., at this time, each side wall surface 314 There are differences in the number and distribution patterns.

The above-mentioned groove body 311 may extend to the sidewall surface 314 . In this way, the groove body 314 can also have a better flow guiding effect, and the groove body 314 can guide the liquid flowing to the surface of the circuit board 300 along its extending direction, so as to guide the liquid out of the circuit board 300 from the extending direction in time. The long-term accumulation of liquid on the circuit board 300 can be avoided to a large extent, and the direct connection of the liquid to the positive power distribution port 320 and the negative power distribution port 330 can be largely avoided, as well as the resulting short circuit problem. At the same time, the timely discharge of the liquid can also create a relatively dry environment for the circuit board 300 , which itself is also beneficial for suppressing ion migration.

Please continue to refer to FIG. 2 , the surface of the board body 310 can be laid with conductive material through printing process, etc., the conductive material can be arranged along a certain track path, and then can constitute the functional circuit 340 of the board body 310, so as to realize the circuit board 300 related functions. It should be understood that the conductive material does not have to be laid on the surface of the board body 310 , it can also be buried inside the board body 310 , which can also form the above-mentioned functional circuit 340 .

The specific structural form of the functional circuit 340 is not limited here. In practical applications, those skilled in the art can configure it according to specific needs, as long as it can meet the requirements of use.

In some embodiments, as shown in FIG. 2 , the functional circuit 340 may include a slow start circuit unit 341 and a power conversion circuit unit 342, and both the positive power distribution port 320 and the negative power distribution port 330 may be connected to the slow start circuit unit 341, and the slow start circuit unit 341 may be connected to the slow start circuit unit 341. The start-up circuit unit 341 can be connected to the power conversion circuit unit 342 .

The slow-start circuit unit 341 can delay the power-on time of the circuit board 300, thereby reducing the influence caused by the unstable contact connection between the positive power distribution port 320, the negative power distribution port 330 and the 48V bus, and can reduce the current when power-on shock. At the same time, the slow start circuit unit 341 can also function as a slow start isolation, which can effectively isolate the influence of the short circuit of the positive power distribution port 320 and the negative power distribution port 330 on the power conversion circuit unit 342 . The power conversion circuit unit 342 is used to realize power conversion, and can convert the voltage of the 48V bus into required voltages, such as 12V, 5V, 3.3V and so on.

In the Y-axis direction, the groove body 311 can extend to the edge position of the slow-start circuit unit 341 at most, so as to avoid affecting the arrangement of the slow-start circuit unit 341 on the board body 310 .

Referring to FIG. 3 , in some embodiments, the groove body 311 may pass through the plate body 310 in the Z-axis direction. In this way, the tank body 311 can better cut off the ion migration path between the positive power distribution port 320 and the negative power distribution port 330, and can avoid ion migration between the positive power distribution port 320 and the negative power distribution port 330 to a greater extent. The electrical connection generated by migration, and the resulting short circuit problem.

Moreover, this penetrating design in the Z-axis direction enables the groove body 311 to have a better flow guiding effect, and the groove body 311 can guide the liquid flowing to the surface of the circuit board 300 along the Z-axis direction, so that Leading the liquid from the Z-axis direction to the circuit board 300 in a timely manner can largely avoid the long-term accumulation of liquid on the circuit board 300 , and further prevent the liquid from being directly connected to the positive power distribution port 320 and the negative power distribution port 330 to a large extent. , and the resulting short circuit problem. At the same time, the timely discharge of the liquid is also conducive to building a relatively dry environment for the circuit board 300 , which itself is also beneficial to suppressing ion migration.

Taking the cold-plate type liquid-cooled server as an example, one surface of the plate body 310 and the heat pipe in the cold plate are basically in a state of bonding, so that when the heat pipe leaks, the heat-exchanging medium in the heat pipe will also directly flow to the the surface. For the convenience of description, the surface where the plate body 310 and the heat pipe are attached can be called the liquid-facing surface 312, and correspondingly, the other surface of the plate body 310 and the heat pipe opposite can be called the liquid-back surface 313, and the liquid-facing surface 312 and the liquid back surface 313 may be oppositely arranged in the Z-axis direction.

In the direction in which the back liquid surface 313 points to the liquid facing surface 312, which is a bottom-up direction in FIG. The axial direction is at a preset angle α, that is, the groove side wall 311a is inclined relative to the Z-axis direction. In this way, the groove body 311 can form a wide mouth 311b positioned at the liquid-facing surface 312 and a narrow mouth 311c positioned at the liquid-back surface 313, and the wide mouth 311b can facilitate liquid (such as heat exchange working medium in the heat pipe) to enter the groove body 311, while the groove body The inclined setting of the side wall 311a can play a better guiding effect on the liquid, so that the liquid can be introduced into the groove body 311 more smoothly and flow out from the narrow opening 311c.

The specific value of the preset included angle α is not limited here, and in practical application, those skilled in the art can determine it according to the flow properties of the liquid that may exist in the specific use environment. It should be understood that under the condition that the width W of the narrow opening 311c is constant, the larger the preset included angle α is, the larger the size of the wide opening 311b is, which is more favorable for the liquid on the liquid-facing surface 312 to flow into the tank 311; The smaller the preset included angle α is, the smaller the size of the wide opening 311b is, and the smaller the space occupied by the groove body 311 on the circuit board 300 is, the more favorable it is to reduce the strength of the circuit board 300 and other electronic devices on the circuit board 300. impact on installation. In an exemplary solution, the preset included angle α can be controlled between 5°-10°. In this way, the occupied space of the groove body 311 on the circuit board 300 can be better controlled, and the With regard to the influence of the strength of the circuit board 300 and the installation of other electronic devices on the circuit board 300 , a better flow guide effect can be ensured, so that the liquid can enter the tank 311 smoothly.

In addition, among the two groove sidewalls 311a of the groove body 311, one groove sidewall 311a may also be arranged obliquely, while the other groove sidewall 311a may extend along the Z-axis direction, so that the aforementioned gradually expanding groove can also be formed. Body 311. Moreover, the groove side wall 311a may not be limited to a plane form, and may also adopt an arc surface or other smooth curved surface, as long as it can form the aforementioned gradually expanding groove body 311 . In practice, the connection between the liquid-facing surface 312 and the tank side wall 311a may be smooth, so as to improve the smoothness of the liquid entering the tank body 311 to a greater extent.

The specific value of the width W of the narrow opening 311c is not limited here, and in practical applications, those skilled in the art can determine it according to the flow properties of the liquid that may exist in the specific use environment. It should be understood that the larger the width W of the narrow opening 311c, the more conducive to the smooth export of the liquid along the Z-axis direction; the smaller the width W of the narrow opening 311c, the more conducive to reducing the strength of the circuit board 300 and other electronic devices on the circuit board. 300 on the assembly impact. In an exemplary solution, the width W of the narrow opening 311c may be greater than the preset width, and the preset width may be between 3mm-7mm. In this way, the size of the narrow opening 311c can be better controlled to The impact on the strength of the circuit board 300 and the assembly of other electronic devices on the circuit board 300 can be reduced, and the smoothness of liquid discharge can be ensured.

In some optional embodiments, the inner wall of the tank body 311 can also be provided with a hydrophobic coating to reduce the corrosion of the liquid on the inner wall surface of the tank body 311, and ensure the shape of the inner wall surface of the tank body 311, thereby ensuring that the tank body 311 has the function of diversion and drainage.

Here, the embodiments of the present application do not limit the specific types of the above-mentioned hydrophobic coatings. In practical applications, those skilled in the art can design according to specific needs, as long as they can meet the requirements of use. Exemplarily, the hydrophobic coating may be conformal paint, fluorocarbon coating, etc.

Please refer to FIG. 4 . FIG. 4 is a partial cross-sectional view along the direction A-A of another embodiment in FIG. 2 .

As shown in Figure 4, in some other embodiments, the groove body 311 may not penetrate the plate body 310 in the direction of the Z axis, at this time, the groove body 311 can still block the positive power distribution port 320 and the negative electrode to a certain extent The ion migration path between the distribution ports 330 , the liquid entering the tank body 310 can extend from the tank body 311 to one end of the side wall surface 314 to discharge the circuit board 300 , so as to realize the function of liquid drainage.

It should be pointed out that the above description mainly takes the application of the circuit board 300 in the computing node 200 as an example, but in fact, the circuit board 300 does not necessarily have to be applied in the computing node 200. Among them, the circuit board 300 may also exist as a hardware single board, which is also feasible, that is to say, the embodiment of the present application does not actually limit the application scenarios of the circuit board.

The number of the above-mentioned tank body 310 can be one or more. When there are multiple tank bodies 310, each tank body 310 can be arranged at intervals in the X-axis direction, and each tank body 310 can be located between the positive power distribution port 320 and the negative power distribution port 330; Multiple barriers are formed between the positive power distribution port 320 and the negative power distribution port 330, the possibility of ion migration can be lower, and the diversion effect of the tank body 310 can also be better, which can better prevent liquid from being trapped in the plate body. 310 surface buildup.

In some optional implementation manners, the computing node 200 may also include a housing (not shown in the figure), the housing may be provided with a sump, and the liquid flowing out from the tank body 311 can enter the sump for collection, thus, It can avoid the overflow of liquid and affect the normal work of other components.

In some optional implementations, the cabinet 110 may be provided with a diversion pipeline (not shown) connected to the sump, so as to discharge the liquid collected in the sump in time, thereby avoiding The phenomenon that the liquid in the sump overflows.

The above are only the preferred embodiments of the present application. It should be pointed out that for those of ordinary skill in the art, without departing from the principle of the application, some improvements and modifications can also be made, and these improvements and modifications should also be considered as For the scope of protection of this application.

Claims (10)

1. A circuit board, characterized in that it includes a board body, the board body is provided with a positive power distribution port and a negative power distribution port, the board body is also provided with a groove body, and the groove body has an extension direction and a width direction, the width direction is perpendicular to the extension direction, and the positive power distribution port and the negative power distribution port are respectively located on both sides of the width direction of the tank body. 2 . The circuit board according to claim 1 , wherein the groove body also has a depth direction, and the groove body penetrates the board body in the depth direction. 3 . 3. The circuit board according to claim 2, wherein the two surfaces of the board body are respectively a liquid-facing surface and a liquid-back surface, and the liquid-facing surface and the liquid-back surface are in the depth direction Relatively arranged; in the direction in which the liquid-back surface points to the liquid-facing surface, the width of the groove increases gradually. 4. The circuit board according to claim 3, wherein the minimum width of the groove body is greater than a preset width, and the preset width is between 3mm-7mm; and/or, The groove body has two groove side walls arranged oppositely in the width direction; among the two groove side walls, at least one of the groove side walls and the depth direction form a preset angle, and the preset angle Between 5°-10°. 5. The circuit board according to any one of claims 1-4, wherein the board body has a thickness direction, the board body has two surfaces and a side wall surface, and the two surfaces are located between the board body The side walls are arranged opposite to each other in the thickness direction, the side walls connect the two surfaces, and the groove body extends to the side walls. 6. The circuit board according to any one of claims 1-4, characterized in that, the circuit board also includes a slow start circuit unit and a power conversion circuit unit, the positive power distribution port and the negative power distribution port The ports are all connected to the slow start circuit unit, and the slow start circuit unit is connected to the power conversion circuit unit. 7. A computing node, comprising a circuit board and an electronic device, the electronic device being mounted on the circuit board, wherein the circuit board is the circuit board according to any one of claims 1-6. 8. The computing node according to claim 7, wherein the plate body has two surfaces and a side wall surface connecting the two surfaces, the two surfaces are respectively a liquid-facing surface and a liquid-back surface, and the facing surface The liquid surface and the back liquid surface are arranged oppositely in the thickness direction of the plate body; The groove body runs through the plate body in the thickness direction; and/or, the groove body extends to the side wall surface; The computing node further includes a cold plate, and the cold plate is disposed opposite to the liquid-facing surface. 9 . The computing node according to claim 8 , wherein the computing node further comprises a shell, the shell is provided with a liquid collection tank, and the liquid flowing out from the tank body can enter the liquid collection tank. 10 . 10. A computing device, comprising a cabinet and a computing node, wherein the computing node is installed in the cabinet, wherein the computing node is the computing node according to claim 9.

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