Immersed liquid-cooled charging module

Abstract

The present invention relates to the technical field of component cooling improvement, and specifically discloses an immersion liquid-cooled charging module, comprising at least two baffles, which are rotatably connected to a main board via an electric hinge, the electric hinge being arranged perpendicular to the main board, and each baffle being arranged at the same height in the liquid cooling chamber; a controller, which is provided with a flow rate mode and a temperature mode of the baffle. In the flow rate mode, the controller controls the opening and closing angles of the baffles so that the distance between the edge of the baffle and the surface of the corresponding component is the thickness of the temperature boundary layer of the coolant between the edge of the baffle and the component corresponding to the baffle. In the temperature mode, the controller adjusts the opening and closing angles of the baffles so that the temperatures of the area above the baffle and the area below the baffle are the same. Through the dual control modes of the baffle and the controller for the baffle, the cooling effect on the components can be adaptively controlled while realizing flexible configuration of the charging module.

Description

Technical Field

[0001] The present invention relates to the technical field of component cooling improvement, and in particular to an immersion liquid-cooled charging module. Background Art

[0002] Most of the existing liquid-cooled charging modules are modified from air-cooled ones, or improved based on the air-cooled heat dissipation structure. Directly using immersion liquid cooling devices for cooling will result in low cooling efficiency and produce local high temperature points.

[0003] For example, the prior art discloses an immersion-cooled power module assembly, comprising: a charging power module; and a coolant tank for immersing the charging power module, the coolant tank being provided with a coolant inlet and an outlet; characterized in that: the charging power module is completely encapsulated in the inner cavity shell of the charging power module by an insulating heat-conductive encapsulating glue to form an integral encapsulating structure. Compared with traditional air cooling, the immersion-cooled liquid-cooled power module assembly can improve the power density of the power supply, the protection level, the heat dissipation efficiency, the electrical insulation is higher and safer, the coolant is not restricted, and the product life is greatly improved; it solves the problems of noise, poor heat dissipation and low protection level existing in traditional air cooling.

[0004] However, this liquid-cooled charging module converted from air cooling is immersed in a cooling box, which makes maintenance and configuration difficult, and the cooling mode for components is single and lacks the targeted cooling of components in combination with scenarios and actual working conditions. Summary of the invention

[0005] The object of the present invention is to provide an immersion liquid-cooled charging module that can be flexibly configured while adaptively controlling the cooling effect on components.

[0006] To this end, the present invention provides an immersion liquid-cooled charging module, which includes: a shell, a cavity is formed inside the shell, the cavity is separated by a partition to form a buffer tank and a liquid cooling cavity distributed on the left and right, the upper part of the buffer tank is connected with the upper part of the liquid cooling cavity, a main board is installed in the liquid cooling cavity, and a number of components are installed on the main board. A liquid outlet pipe and a liquid inlet pipe are provided on one side of the cavity, the liquid inlet pipe is connected with the liquid cooling cavity, the liquid outlet pipe is connected with the buffer tank, and the coolant in the liquid outlet pipe flows back to the liquid inlet pipe after being cooled by a cooling tower. The immersion liquid-cooled charging module also includes a baffle, a temperature sensor and a controller.

[0007] At least two baffles are configured, and the baffles are rotatably connected to the mainboard through an electric hinge, the electric hinge is arranged perpendicular to the mainboard, and the baffles are arranged at the same height in the liquid cooling chamber, and the length of a single baffle is the same as the distance between the electric hinge connected to the baffle and the surface of the component corresponding to the baffle;

[0008] At least two baffles are configured, and the baffles are rotatably connected to the mainboard through an electric hinge, the electric hinge is arranged perpendicular to the mainboard, and the baffles are arranged at the same height in the liquid cooling chamber, and the length of a single baffle is the same as the distance between the electric hinge connected to the baffle and the surface of the component corresponding to the baffle;

[0009] At least one temperature sensor is respectively arranged in the area above the baffle and the area below the baffle in the liquid cooling chamber;

[0010] The controller is provided with a flow rate mode and a temperature mode of the baffle. In the flow rate mode, the controller controls the opening and closing angle of the baffle so that the distance between the edge of the baffle and the surface of the corresponding component is the temperature boundary layer thickness of the coolant between the edge of the baffle and the corresponding component of the baffle;

[0011] In the temperature mode, the controller adjusts the opening and closing angle of the baffle to make the temperature of the area above the baffle and the temperature of the area below the baffle the same;

[0012] The opening and closing angle of the baffle is the angle between the baffle and the horizontal plane where the electric hinge is located, and the baffle opens in a direction upward away from the horizontal plane where the electric hinge is located.

[0013] As a preferred technical solution of the immersion liquid-cooled charging module, in the flow rate mode, the controller determines the opening and closing angle of the baffle according to the following formula:

[0014] ,

[0015] Among them, δ t is the thickness of the temperature boundary layer, α is the opening and closing angle, and L is the length of the baffle.

[0016] As a preferred technical solution for the immersion liquid-cooled charging module, the liquid inlet pipe is extended into the liquid cooling cavity, and a portion of the liquid inlet pipe in the liquid cooling cavity is provided with a plurality of liquid separation holes equidistantly upward.

[0017] As a preferred technical solution of the immersion liquid-cooled charging module, the controller determines the temperature boundary layer thickness according to the following formula;

[0018] ,

[0019] Where x is the vertical distance between the lower edge of the component and the edge of the baffle when the opening and closing angle of the baffle is the largest, v is the flow rate of the coolant output from the liquid separation hole closest to the edge of the baffle, and c p is the specific heat capacity of the coolant, μ is the dynamic viscosity of the coolant, λ is the thermal conductivity of the coolant, and ρ is the density of the coolant.

[0020] As a preferred technical solution for the immersion liquid-cooled charging module, the controller obtains the temperatures of the area above the baffle and the area below the baffle respectively in the temperature mode, and adjusts the opening and closing angle of the baffle according to the temperature difference between the area above the baffle and the area below the baffle, so that the temperature of the area above the baffle is the same as the temperature of the area below the baffle;

[0021] The opening and closing angle of the baffle is positively correlated with the temperature difference between the area above the baffle and the area below the baffle.

[0022] As a preferred technical solution for the submerged liquid-cooled charging module, the baffle is configured to be retractable in the length direction and / or width direction.

[0023] As a preferred technical solution for the immersion liquid-cooled charging module, the controller enters the flow rate mode in response to the operating power of the cooling tower being less than a preset power, and enters the temperature mode in response to the operating power of the cooling tower being greater than or equal to a preset power.

[0024] As a preferred technical solution for the immersion liquid-cooled charging module, the controller can control the opening or closing of the liquid separation hole.

[0025] As a preferred technical solution for the immersion liquid-cooled charging module, the controller controls the liquid separation holes on the liquid inlet pipe to be opened one at a time in the flow rate mode, and to be opened entirely in the temperature mode.

[0026] As a preferred technical solution for the immersion liquid-cooled charging module, a power output interface and a power input interface are provided below the shell, and both the power input interface and the power output interface are configured as a watertight structure.

[0027] The beneficial effects of the present invention are:

[0028] The present invention provides an immersion liquid-cooled charging module, which includes a baffle with an adjustable opening and closing angle, and a controller. The controller is provided with a flow rate mode and a temperature mode. In the flow rate mode, the controller controls the opening and closing angle of the baffle so that the distance between the edge of the baffle and the surface of the corresponding component is the temperature boundary layer thickness of the coolant between the edge of the baffle and the corresponding component of the baffle. In the temperature mode, the controller adjusts the opening and closing angle of the baffle so that the temperature of the area above the baffle and the area below the baffle are the same. The flexible opening and closing of the baffle and the adaptive control of the opening and closing angle of the baffle can effectively and selectively target local components. Cooling or taking into account the cooling of the charging module as a whole, the distance between the components corresponding to the baffle and the edge of the baffle is maintained at the thickness of the temperature boundary layer, that is, the distance from the point where the temperature of the coolant between the component and the baffle reaches 99% of the mainstream temperature to the surface of the component, which can ensure that the coolant is used more for cooling the components corresponding to the baffle, and avoid the coolant from leaking out of the gap. In the temperature mode, the opening and closing angle of the baffle is used to ensure the consistency of the temperature of the area above the baffle and the area below the baffle, which can make the immersion liquid-cooled charging module have better cooling integrity, avoid local temperature being too high or too low, and can adaptively control the cooling effect on the components.

[0029] Furthermore, the immersion liquid-cooled charging module of the present invention can operate independently or in parallel. When multiple immersion liquid-cooled charging modules are operated in parallel, the power supply and liquid cooling systems of each immersion liquid-cooled charging module will not affect each other. When a module fails, it will not affect the normal operation of other modules. The corresponding cooling system configuration can be used to realize the coolant circulation alone or the common circulation of multiple charging modules, thereby improving the flexibility of equipment configuration. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 The structure of the submerged liquid-cooled charging module in the embodiment of the present invention is shown in FIG. Figure 1 ;

[0031] Figure 2 The structure of the submerged liquid-cooled charging module in the embodiment of the present invention is shown in FIG. Figure 2 ;

[0032] Figure 3 is a control block diagram of a controller in an embodiment of the present invention;

[0033] Figure 4 4 is a control flow chart of the controller in an embodiment of the present invention.

[0034] In the figure:

[0035] 1. Shell; 2. Partition; 3. Buffer tank; 4. Liquid cooling chamber; 5. Main board; 6. Components; 7. Liquid outlet pipe; 8. Liquid inlet pipe; 9. Baffle; 10. Electric hinge; 11. Liquid separation hole; 12. Power input interface; 13. Power output interface. DETAILED DESCRIPTION

[0036] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0037] In the description of the present invention, it should be noted that the orientations or positional relationships indicated by the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. Among them, the terms "first position" and "second position" are two different positions, and the first feature "above", "above" and "above" the second feature include the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. The first feature "below", "below" and "below" the second feature include the first feature being directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0038] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0039] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0040] like Figure 1-3As shown, this embodiment provides an immersion liquid-cooled charging module, which includes a shell 1, a cavity is formed inside the shell 1, and the cavity is separated by a partition 2 to form a buffer tank 3 and a liquid cooling cavity 4 distributed on the left and right, the upper part of the buffer tank 3 is connected with the upper part of the liquid cooling cavity 4, a main board 5 is installed in the liquid cooling cavity 4, and a number of components 6 are installed on the main board 5, a liquid outlet pipe 7 and a liquid inlet pipe 8 are provided on one side of the cavity, the liquid inlet pipe 8 is connected with the liquid cooling cavity 4, the liquid outlet pipe 7 is connected with the buffer tank 3, and the coolant in the liquid outlet pipe 7 flows back to the liquid inlet pipe 8 after being cooled by a cooling tower, and the immersion liquid cooling charging module also includes a baffle 9, a temperature sensor and a controller.

[0041] At least two baffles 9 are provided, and the baffles 9 are rotatably connected to the main board 5 through an electric hinge 10, and the electric hinge 10 is arranged perpendicular to the main board 5. The baffles 9 are arranged at the same height in the liquid cooling chamber 4 at intervals, and the length of a single baffle 9 is the same as the distance between the electric hinge 10 connected to the baffle 9 and the surface of the component corresponding to the baffle 9 (that is, the edge of the baffle is in contact with the surface of the corresponding component when the opening and closing angle of the baffle 9 is 0). It can be understood that the component corresponding to the baffle 9 is the component that is closest to the baffle edge and is affected by the actuation of the baffle 9, and the baffle edge is the edge of the baffle 9 in the length direction away from one end of the electric hinge 10;

[0042] At least one temperature sensor is respectively arranged in the area above the baffle and the area below the baffle in the liquid cooling chamber 4;

[0043] The controller is provided with a flow rate mode and a temperature mode of the baffle 9. In the flow rate mode, the controller controls the opening and closing angle of the baffle 9 so that the distance between the edge of the baffle and the surface of the corresponding component (i.e., the shortest distance between the edge of the baffle and the surface of the corresponding component) is the temperature boundary layer thickness of the coolant between the edge of the baffle and the corresponding component of the baffle 9;

[0044] In the temperature mode, the controller adjusts the opening and closing angle of the baffle 9 to make the temperature of the area above the baffle and the area below the baffle the same;

[0045] The opening and closing angle of the baffle 9 is the angle between the baffle 9 and the horizontal plane where the electric hinge 10 is located, and the baffle 9 opens in a direction upward away from the horizontal plane where the electric hinge 10 is located.

[0046] In the above embodiment, through the flexible opening and closing of the baffle and the adaptive control of the opening and closing angle of the baffle, it is possible to effectively and selectively cool local components or take into account the cooling of the entire charging module, and keep the distance between the components corresponding to the baffle and the edge of the baffle at the thickness of the temperature boundary layer (that is, the distance from the point where the temperature of the coolant between the component and the baffle reaches 99% of the mainstream temperature to the surface of the component), which can ensure that the coolant is used more for cooling the components corresponding to the baffle, and avoid the loss of coolant from the gap. In the temperature mode, the opening and closing angle of the baffle is used to ensure the consistency of the temperature of the area above the baffle and the area below the baffle, so that the immersion liquid-cooled charging module has better cooling integrity, avoids local temperatures being too high or too low, and can adaptively control the cooling effect on the components.

[0047] Based on the above effects, the immersion liquid-cooled charging module of this embodiment can operate independently or in parallel. When multiple immersion liquid-cooled charging modules are operated in parallel, the power supply and liquid cooling systems of each immersion liquid-cooled charging module will not affect each other. When an immersion liquid-cooled charging module fails, it will not affect the normal operation of other immersion liquid-cooled charging modules. The corresponding cooling system configuration can be used to realize the independent circulation of coolant or the common circulation of coolant of multiple immersion liquid-cooled charging modules, thereby improving the flexibility of equipment configuration.

[0048] Specifically, the coolant in this embodiment is encapsulated inside the module, so that the charging module can be flexibly disassembled and assembled without leaking the coolant, thereby improving the maintainability of the charging module. The provision of the buffer tank can reduce the leakage loss of the coolant when the charging module is damaged by external force or the mechanism connection is not tight. At the same time, it also ensures the efficient circulation of the coolant from bottom to top, and concentrates the inlet and outlet pipelines on the same side to save space.

[0049] Optionally, the main board 5 is a PCB board, the controller is a PID controller integrated on the main board 5, a motor and an angle sensor are installed in the hinge shaft tube of the electric hinge 10, the main board 5 can supply power to the electric hinge 10, a motor and an angle sensor are installed in the hinge shaft tube of the electric hinge 10, the controller outputs an adjustment command to the motor according to the signal of the angle sensor, and the motor adjusts the opening and closing angle of the baffle 9 according to the command of the controller.

[0050] Specifically, in the flow rate mode, the opening and closing angle of the baffle 9 is adjusted according to the flow rate of the coolant. At this time, the opening and closing angle of the baffle 9 makes the distance between the other end of the baffle 9 and the heat-generating device equal to the temperature boundary layer thickness of the coolant on the surface of the device (that is, the distance from the point where the temperature of the coolant on the surface of the component reaches 99% of the mainstream temperature to the surface of the component), which can ensure that the coolant is used more for component cooling and avoid the coolant from leaking from the gaps.

[0051] In practice, the thickness of the temperature boundary layer can be derived from the relationship between the Prandtl number and the thickness of the turbulent flow boundary layer and the temperature boundary layer. The physical meaning of the Prandtl number Pr is a dimensionless number of the relative magnitude of the momentum transfer and heat transfer processes in the reaction fluid. The value of Pr depends on the properties of the fluid. When Bolhausen integrated and solved the boundary layer energy differential equation, he found that the ratio of the thickness of the thermal boundary layer to the flow boundary layer is approximately:

[0052]

[0053] Where δ is the thickness of the turbulent flow boundary layer.

[0054] It should be noted that the flow rate pattern of this embodiment is only applicable to immersion liquid-cooled charging modules using coolant with Pr>1. Of course, for oils, the Pr number is generally greater than 1, and most coolants currently on the market are suitable for the flow rate pattern of this embodiment.

[0055] Specifically, the turbulent flow boundary layer begins to form at the transition point between the baffle and the corresponding component surface. After simplifying the boundary layer momentum integral equation, we get:

[0056] ,

[0057] According to the above formula, the temperature boundary layer thickness of the coolant between the baffle and the corresponding components of this embodiment is determined as:

[0058] ,

[0059] In order to achieve the above-mentioned temperature boundary layer thickness, since the baffle length is the same as the distance between the electric hinge and the surface of the corresponding component of the baffle, a right triangle is formed by drawing a vertical line from the edge of the baffle to the horizontal plane where the electric hinge is located. At this time, the baffle length is the hypotenuse, and the difference between the baffle length and the temperature boundary layer thickness is the right angle. The angle between the hypotenuse and the right angle is the opening and closing angle of the baffle. The opening and closing angle of the baffle is determined by trigonometric functions as follows:

[0060] ,

[0061] In the above formulas, x is the vertical distance between the lower edge of the component and the edge of the baffle when the opening and closing angle of the baffle is the largest (the lower edge of the component is the lower edge of the component close to the baffle), v is the flow rate of the coolant output from the liquid separation hole closest to the baffle edge, and c is p is the specific heat capacity of the coolant, μ is the dynamic viscosity of the coolant, λ is the thermal conductivity of the coolant, ρ is the density of the coolant, δ t is the thickness of the temperature boundary layer, α is the opening and closing angle, L is the length of the baffle, and the length direction of the baffle is perpendicular to the electric hinge.

[0062] In detail, in the above formula, x is theoretically the distance between the edge of the baffle and the lower edge of the device in the vertical direction, and v is theoretically the flow rate of the coolant between the baffle and the surface of the component. However, since the baffle is movable, the distance in the vertical direction between the lower edge of the component and the position of the baffle edge when the baffle opening and closing angle is the largest, which is larger than the theoretical value of x, is taken. The temperature boundary layer thickness determined in this way will be slightly larger than the theoretical temperature boundary layer thickness, which can better ensure that the temperature of the coolant acts more on the surface of the component. Since v cannot be directly collected and obtained, the flow rate of the coolant output from the liquid separation hole closest to the edge of the baffle is used as v for calculation. Since the gap between the baffle and the component is small, the flow rate of the coolant output from the liquid separation hole closest to the edge of the baffle is smaller than the flow rate of the coolant between the baffle and the surface of the component. A smaller v makes the temperature boundary layer thickness larger. Therefore, even if there is an error in the calculation result, the temperature boundary layer thickness determined by the above formula will be greater than the theoretical temperature boundary layer thickness, which can better ensure the cooling effect of the coolant on the component.

[0063] It can be understood that the above approximate formula and the simplified boundary layer momentum integral equation are the calculation methods that are closest to the target results in current fluid mechanics. The current existing fluid mechanics technology cannot achieve absolutely accurate calculation of the above ratio and the thickness of the turbulent flow boundary layer. Therefore, the temperature boundary layer thickness determined by the above formula can determine the opening and closing angle of the baffle with better accuracy in the existing technology, and can ensure the effect of the baffle on the corresponding components of the baffle.

[0064] In detail, the opening and closing angle of the baffle 9 is greater than 0. In implementation, since at least two baffles 9 are provided, there are at least two components corresponding to the baffles 9. Preferably, the heat generation power of the components corresponding to the baffle 9 during operation is the largest among the components 6 of the immersion liquid-cooled charging module. In this way, by coordinating the baffle 9 with the position of the components, the coolant flow rate on the surface of these components can be targetedly increased in the flow rate mode to achieve the optimal cooling effect for the immersion liquid-cooled charging module.

[0065] Specifically, in the temperature mode, the controller obtains the temperatures of the area above the baffle and the area below the baffle, respectively, and adjusts the opening and closing angle of the baffle 9 according to the temperature difference between the area above the baffle and the area below the baffle, so that the temperature of the area above the baffle is the same as the temperature of the area below the baffle;

[0066] The opening and closing angle of the baffle 9 is positively correlated with the temperature difference between the area above the baffle and the area below the baffle, and the temperature of the area above the baffle and the temperature of the area below the baffle are obtained by temperature sensors. It can be understood that the area above the baffle is the area above the horizontal plane where the electric hinge 10 is located, and the area below the baffle is the area below the horizontal plane where the electric hinge 10 is located.

[0067] In detail, several gears of the opening and closing angle of the baffle 9 are provided in the controller. If the temperature difference between the area above the baffle and the area below the baffle is greater than 0, the opening and closing angle of the baffle 9 is increased by several gears. The number of gears is determined according to the size of the temperature difference. The larger the temperature difference, the more gears are increased. After adjustment, the controller obtains the temperature difference again and adjusts it until the temperature of the area above the baffle and the area below the baffle is the same.

[0068] If the temperature of the area above the baffle and the area below the baffle is the same, no adjustment is necessary.

[0069] If the temperature difference between the area above the baffle and the area below the baffle is less than 0, the opening and closing angle of the baffle 9 is adjusted down by several gears, and the number of gears is determined according to the size of the temperature difference. The smaller the temperature difference, the more gears are adjusted down. After the adjustment, the controller obtains the temperature difference again and adjusts until the temperature of the area above the baffle and the area below the baffle is the same. In practice, the relationship between the adjustment gear number and the temperature difference can be determined by a limited number of tests on the opening and closing angle of the baffle and the temperature of the area above the baffle and the area below the baffle, which will not be repeated here.

[0070] Please combine Figure 1-3 See also Figure 4 As shown, the controller enters the flow rate mode in response to the operating power of the cooling tower being less than the preset power, and enters the temperature mode in response to the operating power of the cooling tower being greater than or equal to the preset power. It can be understood that when the operating power of the cooling tower is less than the preset power, the flow rate of the output coolant is relatively small, and the use of the flow rate mode can compensate for this defect. When the operating power of the cooling tower is greater than or equal to the preset power, the flow rate of the output coolant is relatively large, and there is no need to consider the flow rate of the coolant too much. At this time, the temperature uniformity and cooling integrity of each component 6 inside the immersion liquid-cooled charging module are guaranteed, local overheating is avoided, and the operating effect of the immersion liquid-cooled charging module is optimized. Of course, the preset power needs to be adaptively set according to the actual working conditions (such as cooling tower model, rated power, ambient temperature), which will not be repeated here.

[0071] Specifically, the baffle 9 is configured to be able to extend and retract in the length direction and / or width direction. It can extend in the length direction when the baffle 9 is in the extreme position of actuation and the temperature boundary layer thickness cannot be reached. This effectively avoids the situation where the baffle 9 cannot reach the temperature boundary layer thickness even when it is opened and closed to the extreme angle due to too low a coolant flow rate. The extendability in the width direction can further avoid excessive loss of coolant from the edge of the baffle 9 in the width direction. It can adapt to different working conditions and different installation positions through extension and retraction in the width direction, thereby further optimizing the cooling effect of the immersion liquid-cooled charging module.

[0072] In order to make the coolant flow into the liquid cooling chamber 4 evenly, the liquid inlet pipe 8 extends into the liquid cooling chamber 4, and a plurality of liquid separation holes 11 are equidistantly arranged upwardly on the portion of the liquid inlet pipe 8 in the liquid cooling chamber 4. In detail, one end of the liquid inlet pipe 8 in the liquid cooling chamber 4 is closed.

[0073] In order to further improve the cooling effect of the coolant in the above flow rate mode, the controller can control the opening or closing of the liquid separation hole 11. This can be achieved by installing a solenoid valve at the liquid separation hole 11. Further, the controller controls the liquid separation holes 11 on the liquid inlet pipe 8 to be opened one by one in the flow rate mode, and all to be opened in the temperature mode. In the flow rate mode, the opening amount of the smaller liquid separation holes 11 can increase the flow rate of the liquid separation holes 11 for the coolant, making it easier to reach the temperature boundary layer thickness. In the temperature mode, opening all of them can cool each component 6 more comprehensively, which is consistent with the global nature of the temperature mode.

[0074] Specifically, a power output interface 13 and a power input interface 12 are provided below the housing 1. After the grid power is connected to the immersion liquid cooling charging module through the power input interface 12, different power supplies are supplied from the power output interface 13 according to different user needs. Both the power input interface 12 and the power output interface 13 are configured as watertight structures. The occurrence of short circuit is avoided, ensuring the safety of the immersion liquid cooling charging module.

[0075] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the embodiments here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. An immersion liquid-cooled charging module, comprising a shell (1), wherein a cavity is formed inside the shell (1), and the cavity is separated by a partition (2) to form a buffer tank (3) and a liquid cooling cavity (4) distributed on the left and right, a main board (5) is installed in the liquid cooling cavity (4), and a plurality of components (6) are installed on the main board (5), the upper part of the buffer tank (3) is connected to the upper part of the liquid cooling cavity (4), and a liquid outlet pipe (7) and a liquid inlet pipe (8) are provided on one side of the cavity, the liquid inlet pipe (8) is connected to the liquid cooling cavity (4), and the liquid outlet pipe (7) is connected to the buffer tank (3), and the coolant in the liquid outlet pipe (7) flows back to the liquid inlet pipe (8) after being cooled by a cooling tower, characterized in that: The immersion liquid-cooled charging module also includes: At least two baffles (9) are rotatably connected to the main board (5) via electric hinges (10), the electric hinges (10) are arranged perpendicular to the main board (5), the baffles (9) are arranged at intervals at the same height in the liquid cooling chamber (4), and the length of a single baffle (9) is the same as the distance between the electric hinge (10) connected to the baffle (9) and the surface of the component corresponding to the baffle (9); a temperature sensor, at least one of which is disposed in the area above the baffle and in the area below the baffle in the liquid cooling chamber (4); A controller, the controller being provided with a flow rate mode and a temperature mode of the baffle (9), wherein in the flow rate mode, the controller controls the opening and closing angle of the baffle (9) so that the distance between the edge of the baffle and the surface of the corresponding component is the thickness of the temperature boundary layer of the coolant between the edge of the baffle and the component corresponding to the baffle (9); In the temperature mode, the controller adjusts the opening and closing angle of the baffle (9) so that the temperature of the area above the baffle and the temperature of the area below the baffle are the same; The opening and closing angle of the baffle (9) is the angle between the baffle (9) and the horizontal plane where the electric hinge (10) is located, and the baffle (9) is opened in a direction upwardly away from the horizontal plane where the electric hinge (10) is located, the liquid inlet pipe (8) is extended into the liquid cooling chamber (4), and a portion of the liquid inlet pipe (8) located in the liquid cooling chamber (4) is provided with a plurality of liquid separation holes (11) equidistantly upwardly; In the flow rate mode, the controller determines the opening and closing angle of the baffle (9) according to the following formula: ， Among them, δ t is the temperature boundary layer thickness, α is the opening and closing angle, and L is the baffle length; The controller determines the temperature boundary layer thickness according to the following formula; ， Where x is the vertical distance between the lower edge of the component and the edge of the baffle when the opening and closing angle of the baffle is the largest, v is the flow rate of the coolant output from the liquid separation hole closest to the edge of the baffle, and c p is the specific heat capacity of the coolant, μ is the dynamic viscosity of the coolant, λ is the thermal conductivity of the coolant, and ρ is the density of the coolant.

2. The immersion liquid-cooled charging module according to claim 1, characterized in that: The controller obtains the temperatures of the area above the baffle and the area below the baffle respectively in the temperature mode, and adjusts the opening and closing angle of the baffle (9) according to the temperature difference between the area above the baffle and the area below the baffle, so that the temperature of the area above the baffle is the same as the temperature of the area below the baffle; The opening and closing angle of the baffle (9) is positively correlated with the temperature difference between the area above the baffle and the area below the baffle.

3. The immersion liquid-cooled charging module according to claim 2, characterized in that: The baffle (9) is configured to be telescopic in the length direction and / or the width direction.

4. The immersion liquid-cooled charging module according to claim 2, characterized in that: The controller enters the flow rate mode in response to the operating power of the cooling tower being less than a preset power, and enters the temperature mode in response to the operating power of the cooling tower being greater than or equal to a preset power.

5. The immersion liquid-cooled charging module according to claim 1, characterized in that: The controller is capable of controlling the liquid separation hole (11) to open or close.

6. The immersion liquid-cooled charging module according to claim 5, characterized in that: The controller controls the liquid separation holes (11) on the liquid inlet pipe (8) to open every other liquid separation hole in the flow rate mode, and to open all of them in the temperature mode.

7. The immersion liquid-cooled charging module according to claim 1, characterized in that: A power output interface (13) and a power input interface (12) are provided below the housing (1); the power input interface (12) and the power output interface (13) are both configured as watertight structures.

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