Multi-working-condition spraying type liquid cooling device and mobile equipment

Abstract

The utility model relates to a multi-working-condition spraying type liquid cooling device and mobile equipment, the multi-working-condition spraying type liquid cooling device comprises an evaporation section, a condensation section, a mounting bracket and a spraying adjusting mechanism, the evaporation section is provided with an evaporation cavity, a power element is mounted on the bottom wall of the evaporation cavity through the mounting bracket, and the power element and the evaporation cavity are arranged at an interval; the spraying adjusting mechanism comprises a controller, a liquid pump, a connecting pipeline, a power supply, a liquid level sensing element and nozzles, and the liquid pump is arranged in the evaporation cavity and connected with the nozzles distributed around the power element through the corresponding connecting pipeline. And the controller controls the liquid pump to start, and enables the nozzle at the corresponding position to spray the liquid working medium towards the position, exposed out of the liquid level, of the power element. According to the multi-working-condition spraying type liquid cooling device and the mobile equipment provided by the invention, the problem that a power element is easily subjected to dry burning or overheating due to sudden acceleration change generated by the mobile equipment in operation is solved.

Description

Technical Field

[0001] This application relates to the field of heat pipe device technology, and in particular to a multi-condition spray liquid cooling device and mobile device. Background Technology

[0002] Immersion liquid cooling technology is a technique that directly dissipates heat by completely immersing heat-generating power components (such as CPUs, GPUs, motor stator windings, batteries, servers, etc.) in a specific working fluid (a special coolant with a low boiling point). Its core principle is to utilize the high thermal conductivity and convection properties of the liquid working fluid to transfer the heat generated by the power components to the cooling system through direct contact or phase change heat absorption, thereby achieving efficient heat dissipation.

[0003] Furthermore, based on whether the working fluid undergoes a phase change, this technology can be divided into two categories: the first is non-phase change immersion liquid cooling, specifically, using a high-boiling-point working fluid (such as mineral oil), relying entirely on the sensible heat change of the liquid state for heat exchange, and the working fluid undergoes no phase change process; the second is phase change immersion liquid cooling, specifically, using low-boiling-point fluorinated liquids, water, ethanol, or other working fluids, achieving heat transfer from the liquid to the gaseous state through a phase change process. Both of these immersion liquid cooling technologies achieve high integration and efficient heat exchange performance by eliminating the contact thermal resistance in traditional heat dissipation methods, and this technology has been maturely applied in fixed scenarios such as wind, solar, and energy storage systems, and data centers.

[0004] However, when immersion liquid cooling technology is extended to mobile equipment such as new energy vehicles, drones, and humanoid robots, it faces some unique challenges. Specifically, the sudden acceleration changes generated by mobile devices during operation (including rapid acceleration, emergency braking, high-speed steering, and tilting) can cause unsteady flow of the working fluid, resulting in some power components being intermittently exposed above the liquid surface. This dynamic liquid level change will cause the following problems: the exposed areas of the power components lose cooling from the working fluid, leading to localized overheating and eventually dry burning. This will significantly reduce the reliability and lifespan of the power components. Utility Model Content

[0005] Therefore, it is necessary to provide a multi-condition spray-type liquid cooling device and mobile equipment to solve the problem that the sudden acceleration generated during the operation of the mobile equipment causes the power components to be intermittently exposed to the liquid surface of the working fluid, which in turn makes the power components prone to local overheating or even dry burning.

[0006] The multi-condition spray liquid cooling device provided in this application includes an evaporation section, a condensation section, a mounting bracket, and a spray adjustment mechanism. The evaporation section has an evaporation chamber filled with liquid working fluid. One end of the mounting bracket is installed on the bottom wall of the evaporation chamber, and the other end is supported on the side of the power element near the bottom wall of the evaporation chamber, so that the bottom surface of the power element and the bottom wall of the evaporation chamber are spaced apart. The spray adjustment mechanism includes a controller, a liquid pump, connecting pipes, a power supply, a liquid level sensing element, and nozzles. The power supply can supply power to the controller and the liquid pump respectively. The liquid pump is set in the evaporation chamber and connected to each nozzle through corresponding connecting pipes. Multiple nozzles are distributed around the power element. The liquid level sensing element can monitor the liquid level height at various points of the power element in real time and transmit the liquid level data to the controller. When the liquid level sensing element detects that the liquid working fluid surface is exposed at the corresponding part of the power element, the controller can control the liquid pump to start and open the nozzle at the corresponding position so that the nozzle sprays liquid working fluid toward the position of the power element exposed above the liquid surface.

[0007] In one embodiment, the liquid level sensing element is a liquid level sensor, and multiple liquid level sensors are respectively disposed on the periphery of the upper end face of the power element and the periphery of the lower end face of the power element.

[0008] In one embodiment, the liquid level sensing element is a liquid level sensor, and multiple liquid level sensors are respectively disposed on the inner wall of the evaporation chamber and distributed along the periphery of the evaporation chamber at the same horizontal height.

[0009] In one embodiment, the liquid level sensing element is a gyroscope, which is disposed in the evaporation chamber. When the gyroscope is tilted to a preset angle relative to the vertical direction, it can transmit a signal to the controller, so that the controller controls the liquid pump and the corresponding nozzle to spray the power element.

[0010] In one embodiment, the multi-condition spray liquid cooling device further includes a liquid storage chamber located inside the evaporation chamber and above the power element. The liquid storage chamber contains a liquid working fluid, and a switching valve is provided at one end of the liquid storage chamber near the power element. The controller can control the switching valve to open so that the liquid working fluid in the liquid storage chamber is poured onto the surface of the power element. The liquid storage chamber is connected to a liquid pump through a connecting pipe, and the controller can control the switching valve to close and cause the liquid pump to pump the liquid working fluid into the liquid storage chamber.

[0011] In one embodiment, the multi-condition spray liquid cooling device further includes a liquid inlet pipe, one end of which is connected to a liquid pump, and the other end is attached to the bottom wall of the evaporation chamber, so that the liquid working fluid at the bottom of the evaporation chamber can enter the liquid pump through the end opening of the liquid inlet pipe.

[0012] In one embodiment, the sidewall of the inlet pipe is provided with a plurality of through-holes, which are spaced apart along the extension direction of the inlet pipe.

[0013] In one embodiment, the multi-condition spray liquid cooling device further includes heat dissipation fins, and the condensation section is provided with multiple spaced condensation channels, each of which is connected to the evaporation chamber. The heat dissipation fins are disposed between adjacent condensation channels and connected to the outer wall of the condensation channel.

[0014] In one embodiment, the mounting bracket includes an upper frame structure and a plurality of support legs located below the frame structure. The mounting bracket is connected to the bottom wall of the evaporation chamber via the support legs, and the power element is fixedly mounted on the upper end of the frame structure.

[0015] This application also provides a mobile device that includes the multi-condition spray liquid cooling device described in any of the above embodiments.

[0016] Compared with existing technologies, the multi-condition spray-type liquid cooling device and mobile equipment provided in this application actively replenish the cooling medium in exposed areas by combining real-time monitoring with dynamic spraying. For example, in existing technologies, when the liquid level is tilted, the exposed area of ​​the power components can only passively wait for the liquid level to recover, while this solution can immediately form a cooling protective layer through directional spraying from nozzles, significantly shortening the exposure time of the power components. In addition, multiple nozzles distributed around the power components can be independently controlled in different areas according to actual needs, further optimizing cooling efficiency.

[0017] Through the above technical solution, this application solves the problem of localized overheating of power components caused by liquid level fluctuations under dynamic operating conditions of mobile devices. By real-time liquid level monitoring and precise spray control, it ensures that the exposed area is quickly replenished with cooling medium when the liquid level drops, avoiding the risk of dry burning and improving the reliability and service life of the power components. At the same time, the dynamic adjustment capability of the spray mechanism enables the device to adapt to various complex operating conditions, such as rapid acceleration, emergency braking, or tilting, providing stable thermal management support for mobile devices. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this application or the conventional technology, the drawings used in the description of the embodiments or the conventional technology will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 A schematic diagram of the structure of a multi-condition spray liquid cooling device according to an embodiment of this application;

[0020] Figure 2 An exploded view of a multi-condition spray liquid cooling device according to an embodiment of this application;

[0021] Figure 3A schematic diagram of the connection structure between the inlet pipe and the liquid pump according to an embodiment provided in this application.

[0022] Reference numerals: 100, Evaporation section; 110, Evaporation chamber; 120, First mounting hole; 200, Condensation section; 210, Condensation channel; 220, Heat dissipation fins; 300, Mounting bracket; 310, Frame structure; 320, Support foot; 321, Second connecting hole; 400, Spray adjustment mechanism; 410, Liquid pump; 420, Liquid inlet pipe; 430, Dividing hole; 440, Liquid level sensing element; 450, Nozzle; 460, Liquid storage chamber; 500, Sealing flange; 510, Flange plate; 520, Conductive column; 600, Power element. Detailed Implementation

[0023] Please see Figures 1-3 In one embodiment, the multi-condition spray liquid cooling device adopts a heat pipe structure. Specifically, the multi-condition spray liquid cooling device includes an evaporation section 100, a condensation section 200, a mounting bracket 300, and a spray adjustment mechanism 400. The evaporation section 100 is provided with an evaporation chamber 110, which is filled with a liquid working fluid. The power element 600 is disposed in the evaporation chamber 110 and immersed in the liquid working fluid. The heat dissipation principle of the power element 600 is as follows: when the power element 600 generates sufficient heat, the heat will cause the liquid working fluid to reach its boiling point and undergo a phase change. At this time, the liquid working fluid will vaporize into a gaseous working fluid. Subsequently, the gaseous working fluid rises from the evaporation section 100 into the condensation section 200. The condensation section 200 is equipped with multiple spaced-apart condensation channels 210, each of which is connected to the evaporation chamber 110. Heat dissipation fins 220 are provided between adjacent condensation channels 210 and are connected to the outer wall of the condensation channel 210. After the gaseous working fluid enters each condensation channel 210, it transfers heat to the heat dissipation fins 220 through the condensation channels 210. The heat from the heat dissipation fins 220 is mainly transferred to the atmosphere through air cooling, thus completing the heat transfer process of the power element 600. Furthermore, after releasing heat, the gaseous working fluid will condense back into a liquid working fluid. Then, the condensed liquid working fluid flows back into the evaporation chamber 110 under gravity, thus completing one heat dissipation cycle of the working fluid.

[0024] Specifically, the heat dissipation fins 220 between adjacent condensation channels 210 not only enhance the heat dissipation capacity of a single channel, but also promote air convection through the gaps formed by their spacing, further reducing the surface temperature gradient of the condensation channel 210. For example, when the mobile device is tilted, the working fluid distribution within the condensation channel 210 may be uneven. In this case, the distribution density of the heat dissipation fins 220 can be dynamically adjusted according to the channel spacing to ensure balanced heat dissipation capacity in each area.

[0025] Furthermore, it should be noted that the power element 600 connects to external components via external connectors. For example, when the power element 600 is a battery, the external connector is a cable. In this case, one end of the cable is connected to the battery, and the other end is connected to an electrical component such as a motor outside the evaporation section 100. When the power element 600 is a battery cell, the external connector is a data cable. In this case, one end of the data cable is connected to the battery cell, and the other end is connected to a device to be controlled outside the evaporation section 100. When the power element 600 is a motor, the external connectors are a power transmission line and the motor's output shaft. One end of the power transmission line is connected to the motor, and the other end is connected to a power source outside the evaporation section 100. One end of the output shaft is fixedly connected to the motor's rotor, and the other end is connected to the device to be driven. Obviously, the power element 600 will always connect to external components via external connectors during operation. Therefore, for the sealing of the evaporation chamber 110, the external connectors are all sealed through the side wall of the evaporation chamber 110.

[0026] Specifically, in one embodiment, such as Figure 2 As shown, the multi-condition spray liquid cooling device also includes external connectors (not shown), a sealing flange 500, and a sealing shaft (not shown). The side wall of the evaporation section 100 is provided with a first mounting hole 120 and a second mounting hole (not shown). The sealing flange 500 is sealed at the first mounting hole 120. External connectors such as cables, power transmission lines, or data cables pass through the sealing flange 500 to electrically connect the power element 600 and external components. The sealing shaft is located at the second mounting hole, and the motor output shaft passes through the sealing shaft to connect to the external drive component.

[0027] It should be noted that the sealing flange 500 and the sealing shaft do not necessarily need to be installed simultaneously. The sealing shaft is only required when a motor is present. Furthermore, the number of power components 600 can be one or more; the specific numbers are not listed here.

[0028] Furthermore, in one embodiment, as Figure 2As shown, the external connectors include internal connecting wires (not shown) and external connecting wires (not shown). The sealing flange 500 includes a flange plate 510 and a conductive post 520. The flange plate 510 and the first mounting hole 120 are sealed together. The sealing method can be a detachable connection such as a threaded connection, or a non-detachable connection such as welding. The flange plate 510 and the first mounting hole 120 are fixed by threads or welding to ensure the sealing of the evaporation chamber 110. The conductive post 520 is sealed through the flange plate 510. One end of the conductive post 520 extends out of the inner wall of the evaporation chamber 110 to form an inner protrusion (not shown), and the other end extends out of the outer wall of the evaporation chamber 110 to form an outer protrusion. One end of the internal connecting line is electrically connected to the power element 600, and the other end is electrically connected to the inner protrusion of the conductive post 520. One end of the external connecting line is electrically connected to the external component, and the other end is electrically connected to the outer protrusion, so that the power element 600 is electrically connected to the external component in sequence through the internal connecting line, the conductive post 520 and the external connecting line.

[0029] The sealing of the conductive post 520 on the flange plate 510 uses a rubber sealing ring or epoxy resin filling process to prevent leakage of liquid working fluid along the conductive post 520. The internal connecting wire is connected to the inner protrusion of the conductive post 520 by welding or crimping, and the external connecting wire is connected to the outer protrusion of the conductive post 520 by plug-in or bolt fixing. Thus, the current of the power element 600 is transmitted to the conductive post 520 through the internal connecting wire, and then to the external component through the external connecting wire, forming a complete conductive circuit.

[0030] It should be noted that in this embodiment, the external connector achieves indirect connection between the power element 600 and external components through the conductive post 520. In other embodiments, the power element 600 can be directly connected to external components through the external connector.

[0031] It should be noted that the liquid working fluid is an insulating coolant, that is, the liquid working fluid is electrically insulating. Specifically, the liquid working fluid includes, but is not limited to, pure water without impurities, pure ethanol, insulating oil, and fluorinated liquid.

[0032] Thus, this solution achieves physical separation and modular connection of internal and external circuits through separate internal and external connecting wires, in conjunction with a flange plate 510 with conductive posts 520. This ensures reliable sealing while facilitating the individual replacement of internal or external connecting wires. Furthermore, the raised design on the inner and outer sides of the conductive posts 520 prevents direct contact between the wires and the flange plate 510, reducing loosening of connections due to vibration.

[0033] Furthermore, in one embodiment, the flange plate 510 is an injection molded part, and the conductive post 520 is a metal part, which is inserted into the flange plate 510 by injection molding.

[0034] However, not limited to this, in another embodiment, both the flange plate 510 and the conductive post 520 are metal parts, and the conductive post 520 is welded to the flange plate 510.

[0035] It should be noted that the sidewalls of the evaporation section 100 are made of insulating materials such as plastic.

[0036] like Figure 2 As shown, one end of the mounting bracket 300 is mounted on the bottom wall of the evaporation chamber 110, and the other end is supported on the side of the power element 600 near the bottom wall of the evaporation chamber 110, so that the bottom surface of the power element 600 and the bottom wall of the evaporation chamber 110 are spaced apart. That is, the power element 600 is mounted on the top of the mounting bracket 300 (the end away from the bottom wall of the evaporation chamber 110). Furthermore, the power element 600 can be detachably connected to the mounting bracket 300 by fasteners (including but not limited to screws, bolts, and clips). The power element 600 can also be connected to the mounting bracket 300 by magnetic attachment. In this way, the problem of the power element 600 detaching from the mounting bracket 300 and being damaged is prevented when the mobile device is under conditions of sudden acceleration.

[0037] Specifically, when the mounting bracket 300 is horizontally set, the upper end face of the power element 600 is immersed in the liquid working medium. Furthermore, the top end of the mounting bracket 300 (the end away from the bottom wall of the evaporation chamber 110) is provided with a first connecting hole (not shown in the figure). The surface of the power element 600 near the bottom wall of the evaporation chamber 110 can be immersed in the liquid working medium through the first connecting hole. In this way, the bottom surface of the power element 600 corresponding to the first connecting hole (the end face near the bottom wall of the evaporation chamber 110) can be immersed in the liquid working medium, preventing local overheating of the bottom surface of the power element 600. It is also understood that the first connecting hole is preferably located at the bottom surface of the power element 600 where the heat generation is the highest.

[0038] The horizontal setting of the mounting bracket 300 means that the mounting bracket 300 is in a state perpendicular to the direction of gravity. This can be achieved by using a metal frame in conjunction with a horizontal calibration structure to ensure that the power element 600 maintains stable support under dynamic operating conditions. The first connecting hole refers to the through channel located at the upper end of the mounting bracket 300. This can be achieved by using a circular, rectangular, or irregularly shaped hole structure to allow the liquid working fluid to rise from the bottom of the evaporation chamber 110 to the bottom surface of the power element 600.

[0039] And, as Figure 2As shown, the side of the mounting bracket 300 is provided with a second through hole 321 that penetrates through itself. The second through hole 321 connects to the first through hole. At this time, the liquid working fluid inside the mounting bracket 300 can connect to the liquid working fluid outside the mounting bracket 300 through the second through hole 321. Furthermore, after the liquid working fluid at the first through hole absorbs heat and vaporizes, it can escape from the inner cavity of the mounting bracket 300 through the second through hole 321 and rise into the condensation section 200.

[0040] It should be noted that when the mounting bracket 300 has multiple sides, one or more second connecting holes 321 can be provided on each side to facilitate the rapid escape of the gaseous working medium from the interior of the mounting bracket 300.

[0041] The second connecting hole 321 refers to the through channel located on the side of the mounting bracket 300. Specifically, it can be implemented using a mesh-like, strip-like, or porous structure to provide an upward escape path for the gaseous working fluid.

[0042] This solution constructs a stable working fluid flow path by setting the first connecting hole and the second connecting hole 321, maintaining the continuous coverage of the power element 600 by the liquid working fluid during sudden acceleration changes, while avoiding the accumulation of gaseous working fluid in the confined space to form thermal resistance.

[0043] Specifically, in one embodiment, such as Figure 2 As shown, the mounting bracket 300 includes a frame structure 310 located at the upper part (the end away from the bottom wall of the evaporation chamber 110) and a plurality of support feet 320 located below the frame structure 310. The mounting bracket 300 is connected to the bottom wall of the evaporation chamber 110 through the support feet 320. A first connecting hole is provided at the center of the frame structure 310. The specific shape of the first connecting hole corresponds to the shape of the power element 600. The frame structure 310 and two adjacent support feet 320 surround to form a second connecting hole 321. When the number of support feet 320 is four, the number of second connecting holes 321 is also four, and so on.

[0044] In some specific embodiments, the bottom of the support foot 320 may be provided with an anti-slip pad to enhance the frictional resistance with the bottom wall of the evaporation chamber 110, and the side of the frame structure 310 may be provided with a flow guide hole to promote the circulation of the liquid working fluid. The height adjustment range of the support foot 320 is, for example, 5 mm to 15 mm, which can be adapted to the heat dissipation requirements of different power components 600.

[0045] Thus, when the mounting bracket 300 is set horizontally, the power element 600 is fixed to the upper surface of the frame structure 310, and the support foot 320 raises the frame structure 310 to a certain height, forming a space between the bottom surface of the power element 600 and the bottom wall of the evaporation chamber 110 to accommodate the liquid working fluid. The first connecting hole at the center of the frame structure 310 allows the liquid working fluid to directly contact the bottom surface of the power element 600, while the second connecting hole 321 formed by the support foot 320 and the frame structure 310 provides a lateral flow channel for the gaseous working fluid.

[0046] However, it is not limited to this. In other embodiments, the mounting bracket 300 can also be a structure with only four support columns. One end of the four support columns is connected to the bottom wall of the evaporation chamber 110, and the other end is connected to the power element 600. In this way, the structure of the mounting bracket 300 is simpler, which is conducive to increasing the contact area between the power element 600 and the liquid working fluid, and reducing the weight of the entire multi-condition spray liquid cooling device, thus achieving its lightweight design.

[0047] like Figure 2 As shown, the spray adjustment mechanism 400 includes a controller (not shown), a liquid pump 410, connecting pipes (not shown), a power supply (not shown), a liquid level sensing element 440, and nozzles 450. The power supply can supply power to the controller and the liquid pump 410 respectively. Both the controller and the power supply are located outside the evaporation section 100. The power supply is electrically connected to the controller and the liquid pump 410 respectively through a power line. The liquid pump 410 is located inside the evaporation chamber 110 and is connected to each nozzle 450 through a corresponding connecting pipe. It should be noted that the power line connecting the power supply to the liquid pump 410 is sealed and passes through the side wall of the evaporation chamber 110. Multiple nozzles 450 are distributed around the power element 600 and are respectively installed on the inner wall of the evaporation chamber 110. The liquid level sensing element 440 can monitor the liquid level height at each point of the power element 600 in real time and transmit the liquid level data to the controller.

[0048] It should be noted that the controller can be implemented using a microprocessor in conjunction with a relay module. Furthermore, a miniature solenoid valve can be used to control the start and stop of nozzle 450, ensuring that the liquid working fluid directionally covers the exposed area.

[0049] In one embodiment, the liquid level sensing element 440 is a liquid level sensor, and multiple liquid level sensors are respectively disposed on the periphery of the upper end face and the periphery of the lower end face of the power element 600.

[0050] The liquid level sensor is a device capable of detecting the height of the liquid working fluid. It can be implemented using capacitive, float-type, or photoelectric sensors, and is used to monitor changes in liquid level at different locations of the power element 600 in real time. The periphery of the upper and lower surfaces of the power element 600 refers to the top and bottom edge areas of the power element 600, respectively. Sensors can be arranged around these edges to cover critical areas of the power element 600 that may be exposed to the liquid surface.

[0051] Specifically, when the mobile device is operating dynamically, the liquid level of the working fluid may tilt or fluctuate due to changes in acceleration. At this time, level sensors located on the upper and lower end faces of the power element 600 can detect the liquid level in their respective areas and feed the data back to the controller. For example, if the device accelerates rapidly, causing the liquid level at the rear of the power element 600 to drop, the sensor in that area will trigger the controller to activate the nozzle 450 at the corresponding location to spray water, ensuring that the exposed area is covered in a timely manner. This dual monitoring mechanism on both the upper and lower end faces also avoids the blind spots that may exist in single-direction level detection.

[0052] Compared with existing technologies, this solution forms a three-dimensional monitoring network by arranging multiple sets of liquid level sensors on the upper and lower end faces of the power element 600. This network can accurately identify local liquid level drops caused by dynamic operating conditions in different directions, thereby enabling targeted spray compensation.

[0053] Specifically, taking an example with eight liquid level sensors, four are located at the four corners of the upper surface of the power element 600, and the other four are located at the four corners of the lower surface of the power element 600. There are also eight nozzles 450, with four nozzles 450 positioned at the four corners of the upper surface of the evaporation chamber 110, facing the four corners of the upper surface of the power element 600, and the other four nozzles 450 positioned at the four corners of the lower surface of the evaporation chamber 110, facing the four corners of the lower surface of the power element 600. It should be noted that the liquid working fluid sprayed from the nozzles 450 can be sprayed not only onto the upper and lower surfaces of the power element 600, but also onto its four sides.

[0054] In another embodiment, multiple liquid level sensors are respectively disposed on the inner wall of the evaporation chamber 110 and distributed along the periphery of the evaporation chamber 110 at the same horizontal height.

[0055] The circumferential distribution at the same horizontal height refers to the arrangement of multiple liquid level sensors at the same height intervals in the circumferential direction of the inner wall of the evaporation chamber 110. Specifically, a ring array or a symmetrical distribution can be adopted to ensure that the monitoring covers the entire horizontal cross section of the evaporation chamber 110.

[0056] Compared with existing technologies, this solution integrates the liquid level sensor into the inner wall of the evaporation chamber 110 and keeps it at the same horizontal height. This allows for real-time sensing of the liquid level tilt angle and local liquid level drops, avoiding monitoring errors caused by differences in the height distribution of the liquid level sensor, thereby improving the response speed and accuracy of spray control.

[0057] Understandably, when a smaller number of liquid level sensors are required, only one liquid level sensor can be installed on each of the four sides of the inner wall of the evaporation chamber 110. Ideally, the height of the four liquid level sensors should be flush with the horizontal level of the upper surface of the power element 600. In this case, if the power element 600 tilts, at least one liquid level sensor will inevitably protrude from the liquid surface. Correspondingly, the number of nozzles 450 can also be set to six, corresponding one-to-one with the six faces of the power element 600. Of course, when the power element 600 is not cubic, the number of nozzles 450 can be set according to the actual number of faces of the power element 600. For example, when the power element 600 is spherical, two nozzles 450 can be set to cover opposite ends of the power element 600.

[0058] In another embodiment, the liquid level sensing element 440 is a gyroscope, which is disposed in the evaporation chamber 110. The gyroscope has a basic posture with the condensation section 200 as the upper end in the direction of gravity and the evaporation section 100 as the lower end in the direction of gravity. When the gyroscope tilts relative to the vertical direction (tilts forward and backward or tilts left and right) to a preset angle, and the power element 600 is partially exposed above the liquid surface, the gyroscope can transmit a signal to the controller, which will then activate the liquid pump 410 and the corresponding nozzle 450 to spray the power element 600.

[0059] The gyroscope is an inertial sensor used to detect the tilt angle of the device. Specifically, it can be a microelectromechanical system (MEMS) gyroscope or a fiber optic gyroscope. It determines whether the power element 600 is exposed by monitoring the tilt state of the evaporation chamber 110 in real time. The preset angle is a critical tilt threshold set based on the position of the power element 600 and the liquid level of the working fluid. For example, it can be any value between 5 and 30 degrees. When the device tilts beyond this angle, the area corresponding to the power element 600 may be outside the liquid working fluid coverage. The linkage mechanism of the controller, liquid pump 410, and nozzle 450 refers to the automatic activation of liquid working fluid spraying in the corresponding area when the tilt exceeds the preset angle, ensuring continuous wetting of the power element 600 surface. During spraying, the liquid working fluid covers the exposed surface of the power element 600 and absorbs heat, while simultaneously flowing back to the bottom of the evaporation chamber 110 through gravity or inertia, forming a dynamic cycle. Therefore, it eliminates the need for direct monitoring of the liquid level using a liquid level sensor; instead, it indirectly determines the exposure risk of the power element 600 through changes in the device's attitude, achieving rapid response.

[0060] Compared to existing technologies, this solution uses a gyroscope to sense overall attitude changes of the device, directly linking this to the exposure risk and dynamic operating conditions of the power component 600, enabling more accurate identification of areas requiring spraying. Furthermore, the single-point installation of the gyroscope reduces the need for multiple liquid level sensors, lowering system complexity.

[0061] The controller is electrically connected to the liquid level sensing element 440, the liquid pump 410, and the nozzle 450 respectively. When the liquid level sensing element 440 detects that the liquid level of the working fluid at the corresponding position of the power element 600 has dropped and the corresponding part of the power element 600 is exposed above the liquid surface, the controller can control the liquid pump 410 to start and open the nozzle 450 at the corresponding position so that the nozzle 450 sprays the liquid working fluid toward the position of the power element 600 exposed above the liquid surface.

[0062] Specifically, the power element 600 is fixed inside the evaporation chamber 110 by the mounting bracket 300, with its bottom surface forming a gap with the bottom wall of the evaporation chamber 110 to facilitate the flow of the liquid working fluid. The liquid level sensing element 440 continuously monitors the liquid level around the power element 600. When the mobile device tilts or experiences a sudden acceleration change that causes the liquid level to drop, some areas may be exposed. At this time, the liquid level sensing element 440 transmits a signal to the controller. The controller locates the exposed area based on the signal, starts the liquid pump 410, and delivers the liquid working fluid to the nozzle 450 at the corresponding location through the connecting pipeline. The liquid working fluid is sprayed onto the surface of the exposed area through the nozzle 450 to replenish the cooling coverage of the area and prevent local overheating. The power supply provides power to the controller and the liquid pump 410 to ensure continuous system operation.

[0063] Compared to existing technologies, this solution actively replenishes the cooling medium in exposed areas by combining real-time monitoring with dynamic spraying. For example, in existing technologies, when the liquid level is tilted, the exposed area of ​​the power element 600 can only passively wait for the liquid level to recover, while this solution can immediately form a cooling protective layer through directional spraying from nozzles 450, significantly shortening the exposure time of the power element 600. In addition, multiple nozzles 450 distributed around the power element 600 can be independently controlled in different areas according to actual needs, further optimizing cooling efficiency.

[0064] Through the above technical solution, this application solves the problem of localized overheating of the power component 600 caused by liquid level fluctuations under dynamic operating conditions of mobile devices. By real-time liquid level monitoring and precise spray control, the exposed area is ensured to be quickly replenished with cooling medium when the liquid level drops, avoiding the risk of dry burning and improving the reliability and service life of the power component 600. Simultaneously, the dynamic adjustment capability of the spray mechanism allows the device to adapt to various complex operating conditions, such as rapid acceleration, emergency braking, or tilting, providing stable thermal management support for mobile devices.

[0065] In one embodiment, when the controller receives a reading from the liquid level sensing element 440 indicating that the time the corresponding position of the power element 600 is exposed above the liquid surface is less than a first preset time, the controller controls the liquid pump 410 to stop operating. That is, as long as the time the power element 600 is exposed above the liquid surface is short (less than the first preset time), the controller can control the liquid pump 410 not to start, mainly because a short exposure time will not significantly affect the heat dissipation of the power element 600. Correspondingly, when the controller receives a reading from the liquid level sensing element 440 indicating that the time the corresponding position of the power element 600 is exposed above the liquid surface is greater than or equal to the first preset time, the controller controls the liquid pump 410 to start and opens the nozzle 450 at the corresponding position, so that the nozzle 450 sprays liquid working fluid towards the position where the power element 600 is exposed above the liquid surface. In other words, once the time a certain part of the power element 600 is exposed above the liquid surface is long and reaches the first preset time set by the system, the controller will control the liquid pump 410 to start and control the corresponding nozzle 450 to open.

[0066] This configuration reduces the frequency of start-stop of the liquid pump 410, preventing its lifespan from being shortened due to frequent start-stop, and also reduces the power consumption of the entire multi-condition spray liquid cooling system.

[0067] Furthermore, the first preset time M satisfies 1S≤M≤5S.

[0068] Furthermore, in one embodiment, when the controller receives a reading from the liquid level sensing element 440 indicating that the time the corresponding position of the power element 600 is re-immersed in the liquid working medium is less than a second preset time, the controller controls the liquid pump 410 to operate continuously, so that the nozzle 450 continuously sprays the liquid working medium towards the position of the power element 600 exposed above the liquid surface. That is, as long as the time the power element 600 is re-immersed in the liquid working medium is short (less than the second preset time), the controller can control the liquid pump 410 to operate continuously for a period of time. Correspondingly, when the controller receives a reading from the liquid level sensing element 440 indicating that the time the corresponding position of the power element 600 is re-immersed in the liquid working medium is greater than or equal to the second preset time, the controller controls the liquid pump 410 to stop operating. In other words, once a certain part of the power element 600 is re-immersed in the liquid working medium for a long time and reaches the second preset time set by the system, the controller will control the liquid pump 410 to shut down.

[0069] With this setup, even if the power element 600 is completely submerged in the liquid working fluid, the spraying from the nozzle 450 will not stop immediately, but will continue for a period of time to prevent the power element 600 from being exposed to the liquid surface again.

[0070] Furthermore, the second preset time N satisfies 2S≤N≤10S.

[0071] In one embodiment, such as Figure 2As shown, the evaporation chamber 110 is equipped with a liquid storage chamber 460, which contains a liquid working fluid. The liquid storage chamber 460 is located above the power element 600. A switching valve (not shown) is located at the end of the liquid storage chamber 460 closest to the power element 600. The switching valve is electrically connected to a controller, which controls the opening and closing of the switching valve. The liquid storage chamber 460 refers to the liquid storage structure located above the power element 600. Specifically, it can be a container with an injection port at the top and an inclined guide surface at the bottom. Its function is to store spare liquid working fluid and form a gravity-fed liquid supply path, providing rapid replenishment in case of a sudden drop in liquid level. The switching valve is the actuator that controls the opening and closing of the outlet of the liquid storage chamber 460. Specifically, it can be a solenoid valve or an electric butterfly valve. Its function is to quickly release the liquid working fluid stored in the liquid storage chamber 460 in response to a control signal, achieving directional coverage of the exposed area of ​​the power element 600.

[0072] When the power element 600 experiences thermal runaway, the controller can open the switching valve to allow the liquid working medium in the storage chamber 460 to pour onto the surface of the power element 600. The storage chamber 460 is connected to the liquid pump 410 via a connecting pipe. When the liquid working medium in the storage chamber 460 has finished pouring, the controller can close the switching valve and pump the liquid pump 410 into the storage chamber 460 to prepare for the next use.

[0073] Specifically, when the liquid level sensing element 440 detects that a local area of ​​the power element 600 is exposed above the liquid surface, the controller first starts the liquid pump 410 to drive the nozzle 450 for spraying and replenishing the liquid. If the liquid pump 410's liquid supply response is delayed, the working fluid flow is obstructed, or the power element 600 experiences thermal runaway, the controller will synchronously trigger the opening of the switching valve, allowing the liquid working fluid stored in the storage chamber 460 to be directly poured onto the exposed area of ​​the power element 600 under gravity, forming an instantaneous covering cooling. After the liquid level recovers, the controller closes the switching valve and starts the liquid pump 410 to re-inject the liquid working fluid into the storage chamber 460 through the connecting pipeline, completing the liquid storage.

[0074] Compared with the existing technology, this solution forms a graded liquid replenishment mechanism by adding a liquid storage chamber 460. On the basis of liquid supply by liquid pump 410, gravity discharge liquid replenishment is superimposed, which shortens the path of liquid working fluid to the exposed area and reduces the dependence on the response speed of liquid pump 410.

[0075] In one embodiment, such as Figure 2 and Figure 3 As shown, the multi-condition spray-type liquid cooling device also includes a liquid inlet pipe 420. One end of the liquid inlet pipe 420 is connected to the liquid pump 410, and the other end is attached to the bottom wall of the evaporation chamber 110, so that the liquid working medium at the bottom of the evaporation chamber 110 can enter the liquid pump 410 through the end opening of the liquid inlet pipe 420.

[0076] Specifically, when the liquid pump 410 is started, the liquid inlet pipe 420 continuously draws the liquid working fluid from the bottom through the end opening attached to the bottom wall of the evaporation chamber 110.

[0077] Furthermore, in one embodiment, as Figure 3 As shown, the side wall of the liquid inlet pipe 420 is provided with a plurality of through holes 430, and the plurality of holes 430 are arranged at intervals along the extension direction of the liquid inlet pipe 420.

[0078] Among them, the dividing hole 430 refers to the through hole on the side wall of the liquid inlet pipe 420, which is used to increase the entry point of the liquid working medium. Specifically, it can be implemented by using circular, elliptical or other shaped holes to disperse the flow path of the liquid working medium and avoid blockage of a single inlet.

[0079] The interval arrangement refers to the distribution of the orifices 430 along the length of the liquid inlet pipe 420 at uniform or non-uniform intervals. Specifically, it can be achieved by equidistant arrangement or by adjusting the spacing according to the liquid flow requirements, so as to ensure that liquid working medium can be drawn in at different positions and improve the uniformity of liquid inlet.

[0080] Specifically, when the liquid pump 410 is running, the liquid working fluid is drawn in through the inlet pipe 420. The arrangement of the branch holes 430 allows the liquid working fluid to enter the inlet pipe 420 from multiple locations. For example, even when liquid level fluctuations or impurity accumulation cause partial blockage, the other branch holes 430 can still maintain their liquid intake function. The spaced branch holes 430 cover different areas of the inlet pipe 420. For example, under tilting or vibration conditions, some branch holes 430 may be blocked, but the remaining branch holes 430 continue to operate, ensuring a stable liquid supply from the liquid pump 410.

[0081] This application also provides a mobile device that includes the multi-condition spray liquid cooling device described in any of the above embodiments.

[0082] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0083] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the scope of protection of this application. Therefore, the patent protection scope of this application should be determined by the appended claims.

[0084] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0085] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0086] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0087] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0088] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0089] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the specification of this application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

Claims

1. A multi-condition spray-type liquid cooling device, characterized in that, It includes an evaporation section (100), a condensation section (200), a mounting bracket (300), and a spray adjustment mechanism (400). The evaporation section (100) is provided with an evaporation chamber (110), which is filled with a liquid working fluid. One end of the mounting bracket (300) is installed on the bottom wall of the evaporation chamber (110), and the other end is supported on the side of the power element (600) near the bottom wall of the evaporation chamber (110), so that the bottom surface of the power element (600) and the bottom wall of the evaporation chamber (110) are spaced apart. The spray adjustment mechanism (400) includes a controller, a liquid pump (410), connecting pipes, a power supply, a liquid level sensing element (440), and nozzles (450). The power supply can supply power to the controller and the liquid pump (410) respectively. The liquid pump (410) is located in the evaporation chamber (110) and connected to each of the nozzles (450) through the corresponding connecting pipes. The multiple nozzles (450) are distributed around the power element (600). The liquid level sensing element (440) can monitor the liquid level height at each point of the power element (600) in real time and transmit the liquid level data to the controller. When the liquid level sensing element (440) detects that the liquid working medium is exposed at the corresponding part of the power element (600), the controller can control the liquid pump (410) to start and open the nozzle (450) at the corresponding position so that the nozzle (450) sprays the liquid working medium toward the position of the power element (600) exposed to the liquid surface.

2. The multi-condition spray-type liquid cooling device according to claim 1, characterized in that, The liquid level sensing element (440) is a liquid level sensor, and multiple liquid level sensors are respectively disposed on the periphery of the upper end face of the power element (600) and the periphery of the lower end face of the power element (600).

3. The multi-condition spray-type liquid cooling device according to claim 1, characterized in that, The liquid level sensing element (440) is a liquid level sensor, and multiple liquid level sensors are respectively disposed on the inner wall of the evaporation chamber (110) and distributed around the evaporation chamber (110) at the same horizontal height.

4. The multi-condition spray-type liquid cooling device according to claim 1, characterized in that, The liquid level sensing element (440) is a gyroscope, which is installed in the evaporation chamber (110). When the gyroscope is tilted to a preset angle relative to the vertical direction, it can transmit a signal to the controller so that the controller can control the liquid pump (410) and the nozzle (450) on the corresponding side to spray the power element (600).

5. The multi-condition spray-type liquid cooling device according to claim 1, characterized in that, It also includes a liquid storage chamber (460), which is located in the evaporation chamber (110) and above the power element (600). The liquid storage chamber (460) contains a liquid working fluid, and a switch valve is provided at one end of the liquid storage chamber (460) near the power element (600). The controller can control the opening of the switching valve so that the liquid working fluid in the storage chamber (460) pours onto the surface of the power element (600); The storage chamber (460) is connected to the liquid pump (410) through the connecting pipe. The controller can control the switch valve to close and cause the liquid pump (410) to pump liquid working fluid into the storage chamber (460).

6. The multi-condition spray-type liquid cooling device according to claim 1, characterized in that, It also includes a liquid inlet pipe (420), one end of which is connected to the liquid pump (410), and the other end is attached to the bottom wall of the evaporation chamber (110) so that the liquid working medium at the bottom of the evaporation chamber (110) can enter the liquid pump (410) through the end opening of the liquid inlet pipe (420).

7. The multi-condition spray-type liquid cooling device according to claim 6, characterized in that, The side wall of the liquid inlet pipe (420) is provided with a plurality of through holes (430), and the plurality of holes (430) are arranged at intervals along the extension direction of the liquid inlet pipe (420).

8. The multi-condition spray-type liquid cooling device according to claim 1, characterized in that, It also includes heat dissipation fins (220), the condensation section (200) is provided with a plurality of spaced condensation channels (210), each of the condensation channels (210) is connected to the evaporation chamber (110), and the heat dissipation fins (220) are disposed between adjacent condensation channels (210) and connected to the outer wall of the condensation channel (210).

9. The multi-condition spray-type liquid cooling device according to claim 1, characterized in that, The mounting bracket (300) includes an upper frame structure (310) and a plurality of support feet (320) below the frame structure (310). The mounting bracket (300) is connected to the bottom wall of the evaporation chamber (110) through the support feet (320), and the power element (600) is fixedly disposed on the upper end of the frame structure (310).

10. A mobile device, characterized in that, Includes the multi-condition spray liquid cooling device as described in any one of claims 1-9.

Images