Liquid cooling heat exchange device

Abstract

The application relates to a liquid cooling heat exchange device which comprises an inlet liquid collecting pipe, an outlet liquid collecting pipe, a liquid distribution pipe and a first opening degree adjusting member, a plurality of liquid distribution pipes are respectively connected with the inlet liquid collecting pipe and the outlet liquid collecting pipe, a first opening degree adjusting member is arranged at the connection position of each liquid distribution pipe and the inlet liquid collecting pipe, and the first opening degree adjusting member is used for controlling the opening degree of the connection position of the inlet liquid collecting pipe and the corresponding liquid distribution pipe. The liquid cooling heat exchange device provided by the application solves the problem that the existing liquid cooling heat exchange device cannot control the heat dissipation of different parts of a battery.

Description

Technical Field

[0001] This application relates to the field of thermal management technology for new energy vehicles, and in particular to a liquid-cooled heat exchange device. Background Technology

[0002] When an electric vehicle operates under different driving conditions, the battery generates a significant amount of heat. Excessive battery temperature can lead to reduced battery life and performance; therefore, battery cooling is necessary. Liquid cooling heat exchangers are typically used for battery cooling.

[0003] A liquid-cooled heat exchanger typically consists of an inlet manifold, an outlet manifold, and several heat exchange structures. Coolant enters from the inlet manifold, flows through multiple heat exchange structures, and then all of it flows into the outlet manifold, allowing these structures to exchange heat with all parts of the battery. It's important to note that different parts of the battery generate different amounts of heat, and existing liquid-cooled heat exchangers cannot provide targeted heat exchange for different parts of the battery; that is, they cannot adjust the heat dissipation of different battery components. This results in an inability to control the heat dissipation of different parts of the battery. Summary of the Invention

[0004] Therefore, it is necessary to provide a liquid cooling heat exchange device to solve the problem that existing liquid cooling heat exchange devices cannot regulate the heat dissipation of different parts of the battery.

[0005] The liquid-cooled heat exchange device provided in this application includes an inlet manifold, an outlet manifold, a distribution pipe, and a first opening adjustment component. Multiple distribution pipes are respectively connected to the inlet manifold and the outlet manifold. A first opening adjustment component is provided at the connection point between each distribution pipe and the inlet manifold. The first opening adjustment component is used to control the opening of the connection point between the inlet manifold and the corresponding distribution pipe.

[0006] In one embodiment, the opening degree of the first opening adjustment element connected to each dispensing pipe is positively correlated with the length of the dispensing pipe from the starting end of the inlet manifold.

[0007] In one embodiment, each first opening adjustment member is provided with a connecting slot extending along the length of the liquid inlet manifold. The liquid inlet manifold is connected to the corresponding liquid distribution pipe through the connecting slot on each first opening adjustment member. A plurality of balls are provided at the connecting slot. The balls are movably engaged with the connecting slot along the length of the liquid inlet manifold to open or close a portion of the connecting slot. The sum of the inner diameters of all the balls in each connecting slot is less than the length of the connecting slot along the length of the liquid inlet manifold. Furthermore, along the flow direction of the coolant in the liquid inlet manifold, the number of balls in each first opening adjustment member decreases.

[0008] In one embodiment, the density p of the ball bearings and the density q of the coolant satisfy q <p<2q。

[0009] In one embodiment, the opening degree of the first opening adjustment element connected to each dispensing pipe is proportional to the square of the length of the dispensing pipe from the starting end of the inlet manifold.

[0010] In one embodiment, the first opening adjustment member is provided with a plurality of first connecting holes distributed along the length direction of the liquid inlet manifold and having the same flow area. The liquid inlet manifold is connected to the corresponding liquid distribution pipe through the plurality of first connecting holes on each first opening adjustment member. Furthermore, the number of first connecting holes on each first opening adjustment member is positively correlated with the length of the first opening adjustment member from the starting end of the liquid inlet manifold.

[0011] In one embodiment, along the flow direction of the coolant in the inlet manifold, the number of first connecting holes on different first opening adjustment members is distributed in an arithmetic sequence.

[0012] Alternatively, along the flow direction of the coolant in the inlet manifold, the number of first connecting holes on different first opening adjustment components is distributed in a geometric sequence.

[0013] In one embodiment, the liquid-cooled heat exchange device further includes a conical diversion protrusion. The bottom end of the diversion protrusion is connected to the side end face of the first opening adjustment member facing the liquid inlet manifold, and the tip of the diversion protrusion extends in a direction away from the liquid distribution pipe. The diversion protrusion is disposed between adjacent first connecting holes so that the coolant can enter the adjacent first connecting holes through the diversion protrusion.

[0014] In one embodiment, the first opening adjustment member is provided with a plurality of second connecting holes distributed along the length direction of the liquid inlet manifold. The number of second connecting holes provided on each first opening adjustment member is equal, and the flow area of ​​each second connecting hole is positively correlated with the length of the second connecting hole from the starting end of the liquid inlet manifold.

[0015] In one embodiment, a second opening adjustment element is also provided at the connection point between each liquid distribution pipe and the liquid outlet collection pipe. The second opening adjustment element is used to control the opening degree of the connection point between the liquid outlet collection pipe and the corresponding liquid distribution pipe. The opening degree of the second opening adjustment element connected to each liquid distribution pipe is positively correlated with the length of the liquid distribution pipe from the starting end of the liquid outlet collection pipe.

[0016] Compared with existing technologies, the liquid-cooled heat exchange device provided in this application allows for the addition of a first opening adjustment element with a larger opening at the inlet end of the liquid distribution tube when it is necessary to increase the heat dissipation of the battery at the corresponding location of the liquid distribution tube. Conversely, when it is necessary to decrease the heat dissipation of the battery at the corresponding location of the liquid distribution tube, a first opening adjustment element with a smaller opening can be installed at the inlet end of the liquid distribution tube. Thus, by installing first opening adjustment elements with different opening sizes at the inlet ends of different liquid distribution tubes, the problem that existing liquid-cooled heat exchange devices cannot regulate the heat dissipation of different parts of the battery is effectively solved. Attached Figure Description

[0017] 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.

[0018] Figure 1 A schematic diagram of the structure of a liquid-cooled heat exchange device according to an embodiment of this application;

[0019] Figure 2 An exploded view of a liquid-cooled heat exchange device according to an embodiment of this application;

[0020] Figure 3 A cross-sectional view of the connection between the inlet manifold and the distributor pipe in an embodiment provided in this application;

[0021] Figure 4 A schematic diagram of the structure of the first opening adjustment member provided in this application. Figure 1 ;

[0022] Figure 5 A schematic diagram of the structure of the first opening adjustment member provided in this application. Figure 2 ;

[0023] Figure 6 A cross-sectional view of a first opening adjustment member according to an embodiment provided in this application;

[0024] Figure 7 A schematic diagram of the structure of the first opening adjustment member according to another embodiment of this application;

[0025] Figure 8 A schematic diagram of the structure of the first opening adjustment member according to yet another embodiment of this application;

[0026] Figure 9 A schematic diagram of the structure of the second opening adjustment member according to an embodiment of this application.

[0027] Reference numerals: 100, inlet manifold; 110, assembly opening; 200, outlet manifold; 300, distributor pipe; 400, first opening adjustment element; 410, first connecting hole; 420, second connecting hole; 430, connecting slot; 431, ball bearing; 440, fixing slot; 500, second opening adjustment element; 600, distributor protrusion. Detailed Implementation

[0028] 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.

[0029] 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.

[0030] 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.

[0031] 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.

[0032] 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.

[0033] 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.

[0034] When an electric vehicle operates under different driving conditions, the battery generates a significant amount of heat. Excessive battery temperature can lead to reduced battery life and performance; therefore, battery cooling is necessary. Liquid cooling heat exchangers are typically used for battery cooling.

[0035] A liquid-cooled heat exchanger typically consists of an inlet manifold, an outlet manifold, and several heat exchange structures. Coolant enters from the inlet manifold, flows through multiple heat exchange structures, and then all of it flows into the outlet manifold, allowing these structures to exchange heat with all parts of the battery. It's important to note that different parts of the battery generate different amounts of heat, and existing liquid-cooled heat exchangers cannot provide targeted heat exchange for different parts of the battery; that is, they cannot adjust the heat dissipation of different battery components. This results in an inability to control the heat dissipation of different parts of the battery.

[0036] Please see Figures 1-9 To address the problem that existing liquid cooling heat exchange devices cannot regulate the heat dissipation of different parts of a battery, this application provides a liquid cooling heat exchange device. The liquid cooling heat exchange device includes an inlet manifold 100, an outlet manifold 200, a distribution pipe 300, and a first opening adjustment component 400. Multiple distribution pipes 300 are respectively connected to the inlet manifold 100 and the outlet manifold 200. A first opening adjustment component 400 is provided at the connection point between each distribution pipe 300 and the inlet manifold 100. The first opening adjustment component 400 is used to control the opening of the connection point between the inlet manifold 100 and the corresponding distribution pipe 300.

[0037] It should be noted that the opening degree refers to the degree to which the first opening degree adjusting member 400 opens at the connection between the liquid inlet manifold 100 and the corresponding liquid distribution pipe 300. For example, an opening degree of 100% means that the first opening degree adjusting member 400 does not obstruct the connection between the liquid inlet manifold 100 and the corresponding liquid distribution pipe 300 at all; an opening degree of 50% means that the first opening degree adjusting member 400 opens half of the flow channel between the liquid inlet manifold 100 and the corresponding liquid distribution pipe 300; and an opening degree of 0 means that the first opening degree adjusting member 400 completely closes the connection between the liquid inlet manifold 100 and the corresponding liquid distribution pipe 300.

[0038] When it is necessary to increase the heat dissipation of the battery at the corresponding position of the liquid distribution pipe 300, a first opening adjustment member 400 with a larger opening can be installed at the liquid inlet end of the liquid distribution pipe 300. Conversely, when it is necessary to decrease the heat dissipation of the battery at the corresponding position of the liquid distribution pipe 300, a first opening adjustment member 400 with a smaller opening can be installed at the liquid inlet end of the liquid distribution pipe 300. In this way, by setting first opening adjustment members 400 with different opening sizes at the liquid inlet ends of different liquid distribution pipes 300, the problem that existing liquid cooling heat exchange devices cannot regulate the heat dissipation of different parts of the battery is effectively solved.

[0039] Furthermore, due to the pressure drop between the locations near and far from the inlet in the same inlet manifold, the flow rate of coolant entering different heat exchange structures will vary. Generally, the flow rate of coolant decreases the further away from the inlet, resulting in differences in the amount of coolant entering different locations within the liquid-cooled heat exchanger. In other words, the liquid-cooled heat exchanger suffers from uneven heat exchange.

[0040] To solve the aforementioned technical problems, those skilled in the art typically employ a technique that involves reducing the diameter of the inlet manifold's starting end, thereby increasing the spray distance of the coolant within the manifold and allowing the coolant to reach further distribution pipes. However, this design only addresses the issue of insufficient coolant intake in the more distant distribution pipes; it may result in a greater amount of coolant in the more distant distribution pipes than in the more near-draining distribution pipes. In other words, it fails to resolve the issue of balancing the coolant intake in different distribution pipes.

[0041] To address the problem of uneven heat exchange in existing liquid-cooled heat exchange devices, the opening size of the first opening adjustment component 400 connected to each liquid distribution pipe 300 is positively correlated with the length of the liquid distribution pipe 300 from the starting end of the liquid inlet manifold 100.

[0042] Multiple experiments have shown that the hydraulic pressure at the connection point between each distributor 300 and the inlet manifold 100 is negatively correlated with the length of the distributor 300 from the starting end of the inlet manifold 100. That is, the farther the distance from the starting end of the inlet manifold 100, the lower the hydraulic pressure of the coolant entering the corresponding distributor 300, resulting in a lower flow velocity of the coolant entering the distributor 300. Conversely, the opening degree of the first opening adjustment component 400 connected to each distributor 300 is positively correlated with the length of the distributor 300 from the starting end of the inlet manifold 100. That is, the farther the distance from the starting end of the inlet manifold 100, the larger the opening degree of the corresponding first opening adjustment component 400. Based on the fact that flow rate equals cross-sectional area multiplied by flow velocity, the liquid cooling heat exchange device provided in this application effectively balances the influence of pressure drop on the flow rate of coolant entering different distribution pipes 300 by setting different opening sizes, thereby ensuring that the flow rate of coolant in different distribution pipes 300 of the liquid cooling heat exchange device can be kept consistent, and thus achieving uniform heat exchange at different locations of the liquid cooling heat exchange device.

[0043] Furthermore, in one embodiment, the opening degree of the first opening adjustment member 400 connected to each dispensing pipe 300 is proportional to the square of the length of the dispensing pipe 300 from the starting end of the inlet manifold 100.

[0044] Multiple experiments have shown that the pressure drop of the coolant in the inlet manifold 100 is not directly proportional to the length of the distributor 300 from the starting end of the inlet manifold 100. Furthermore, through extensive comparative experiments and data analysis, it was determined that the pressure drop of the coolant in the inlet manifold 100 is influenced by both the reduced coolant flow rate and the frictional force of the pipe wall. Therefore, the opening of the first opening adjustment component 400 connected to each distributor 300 is proportional to the square of the length of the distributor 300 from the starting end of the inlet manifold 100. This balances the effects of reduced coolant flow rate and frictional force, resulting in a higher uniformity of coolant distribution within the liquid-cooled heat exchanger.

[0045] However, this is not the only option. In other embodiments, the friction coefficient of the inner wall of the inlet manifold 100 can be reduced so that the influence of friction on the coolant can be ignored. In this case, the opening size of the first opening adjustment member 400 connected to each distributor 300 can be set to be proportional to the length of the distributor 300 from the starting end of the inlet manifold 100.

[0046] In one embodiment, such as Figure 4 and Figure 5As shown, the first opening adjustment member 400 is provided with a plurality of first connecting holes 410 distributed along the length direction of the liquid inlet manifold 100 and having the same flow area. The liquid inlet manifold 100 is connected to the corresponding liquid distribution pipe 300 through the plurality of first connecting holes 410 on each first opening adjustment member 400. Furthermore, the number of first connecting holes 410 on each first opening adjustment member 400 is positively correlated with the length of the first opening adjustment member 400 from the starting end of the liquid inlet manifold 100.

[0047] It should be noted that the number of first connecting holes 410 on each first opening adjustment member 400 is positively correlated with the length of the first opening adjustment member 400 from the starting end of the liquid inlet manifold 100. This means that the longer the length of the first opening adjustment member 400 from the starting end of the liquid inlet manifold 100, the more first connecting holes 410 there are on the first opening adjustment member 400. Since the flow area of ​​the first connecting holes 410 is the same, the longer the length of the first opening adjustment member 400 from the starting end of the liquid inlet manifold 100, the larger the total flow area of ​​the first connecting holes 410 provided on the first opening adjustment member 400, which is conducive to the entry of more coolant into the first opening adjustment member 400.

[0048] Specifically, in one embodiment, along the flow direction of the coolant in the inlet manifold 100, the number of first connecting holes 410 on different first opening adjustment members 400 is distributed in an arithmetic sequence or in a geometric sequence.

[0049] It should be noted that the number of first connecting holes 410 on different first opening adjustment components 400 is distributed in an arithmetic sequence, meaning that along the flow direction of the coolant in the inlet manifold 100, the number of first connecting holes 410 on the first opening adjustment component 400 is 1, 2, 3, and 4, and so on. Alternatively, the number of first connecting holes 410 on different first opening adjustment components 400 is distributed in a geometric sequence, meaning that along the flow direction of the coolant in the inlet manifold 100, the number of first connecting holes 410 on the first opening adjustment component 400 is 1, 2, 4, and 8, and so on.

[0050] Typically, adjacent first connecting holes 410 are spaced apart. Therefore, there is a gap between adjacent first connecting holes 410. After the coolant enters the first opening adjustment member 400, the coolant that fails to enter the first connecting hole 410 will cause reverse backflow after impacting the part between adjacent first connecting holes 410. This will cause turbulence in the first opening adjustment member 400, which will further reduce the pressure drop of the coolant, thus making it difficult for the coolant to enter the more distant distribution pipe 300.

[0051] To address the aforementioned technical problems, in one embodiment, such as Figure 6As shown, the liquid cooling heat exchange device also includes a conical diversion protrusion 600. The bottom end of the diversion protrusion 600 is connected to the side end face of the first opening adjustment member 400 facing the liquid inlet manifold 100. The tip of the diversion protrusion 600 extends in a direction away from the liquid distribution pipe 300. The conical diversion protrusion 600 is disposed between adjacent first connecting holes 410 so that the coolant can enter the adjacent first connecting holes 410 through the diversion protrusion 600 respectively.

[0052] In this way, the diversion protrusion 600 can guide the coolant along the side wall of the diversion protrusion 600 into the adjacent first connecting hole 410 respectively, avoiding the coolant impacting the part between the adjacent first connecting holes 410 and causing turbulence.

[0053] Furthermore, in one embodiment, the tip of the diversion protrusion 600 is bent toward the direction close to the starting end of the inlet manifold 100.

[0054] This facilitates the flow of coolant through the diversion protrusion 600 to the first connecting hole 410, which is located further away from the starting end of the inlet manifold 100.

[0055] In another embodiment, such as Figure 7 As shown, the first opening adjustment member 400 is provided with a plurality of second connecting holes 420 distributed along the length direction of the liquid inlet manifold 100. The number of second connecting holes 420 provided on each first opening adjustment member 400 is equal, and the flow area of ​​each second connecting hole 420 is positively correlated with the length of the second connecting hole 420 from the starting end of the liquid inlet manifold 100.

[0056] It should be noted that the flow area of ​​each second connecting hole 420 is positively correlated with the length of the second connecting hole 420 from the starting end of the liquid inlet manifold 100. This means that the longer the distance of the second connecting hole 420 from the starting end of the liquid inlet manifold 100, the larger the flow area of ​​the second connecting hole 420. Since the number of second connecting holes 420 provided on each first opening adjustment member 400 is equal, it can be seen that the longer the distance of the second connecting hole 420 from the starting end of the liquid inlet manifold 100, the larger the total flow area of ​​the second connecting holes 420 provided on the first opening adjustment member 400, which is conducive to the entry of more coolant into the first opening adjustment member 400.

[0057] Specifically, in one embodiment, along the flow direction of the coolant in the inlet manifold 100, the total flow area of ​​the second connecting holes 420 on different first opening adjustment members 400 is distributed in an arithmetic sequence or a geometric sequence.

[0058] It should be noted that, in one embodiment, the number of second connecting holes 420 can also be one.

[0059] In yet another embodiment, such as Figure 8 As shown, each first opening adjustment component 400 is provided with a connecting slot 430 extending along the length direction of the liquid inlet manifold 100. The liquid inlet manifold 100 is connected to the corresponding liquid distribution pipe 300 through the connecting slot 430 on each first opening adjustment component 400. A plurality of balls 431 are provided at the connecting slot 430. The balls 431 are movably engaged with the connecting slot 430 along the length direction of the liquid inlet manifold 100 to open or close a part of the connecting slot 430. The sum of the inner diameters of all balls 431 in each connecting slot 430 is less than the length of the connecting slot 430 along the length direction of the liquid inlet manifold 100. Furthermore, along the flow direction of the coolant in the liquid inlet manifold 100, the number of balls 431 in each first opening adjustment component 400 decreases.

[0060] It should be noted that the ball bearing 431 moves along the length of the liquid inlet manifold 100 and engages with the connecting slot 430 to open or close a portion of the connecting slot 430. This means that when the ball bearing 431 is in a certain position of the connecting slot 430, the corresponding position of the connecting slot 430 is blocked by the ball bearing 431, and when the ball bearing 431 leaves the above position, the above position of the connecting slot 430 is in a connected state.

[0061] Because the ball bearing 431 moves and engages within the connecting slot 430, the area within the connecting slot 430 that can maintain a connected state is dynamic and not fixed. Furthermore, when the coolant passes through the connecting slot 430, the adjacent balls 431 form a flow channel for coolant circulation. However, due to the blocking effect of the balls 431, the total area of ​​the multiple flow channels is smaller than the original flow area of ​​the connecting slot 430. Therefore, when the coolant passes through multiple flow channels, the flow velocity of the coolant will increase relatively. According to the Venturi effect, at this time, the coolant will have an adsorption effect on the balls 431 on both sides of the flow channel, so that the balls 431 on both sides of the flow channel will move closer to each other. When the balls 431 on both sides move closer to each other, the flow area of ​​the coolant between the two balls 431 is further reduced. At this time, the flow rate of the coolant in the above-mentioned flow channel will also be further reduced (the coolant will enter other distribution pipes 300) until the balls 431 reach a state of force balance. Moreover, the faster the flow velocity of the coolant in the flow channel, the smaller the flow area of ​​the coolant in the flow channel, that is, the greater the flow rate of the coolant entering other distribution pipes 300. Thus, through the active cooperation of the ball bearing 431 and the connecting slot 430, the flow rate of coolant in the flow channel near the starting end of the inlet manifold 100 is effectively reduced, while the flow rate of coolant in the flow channel far from the starting end of the inlet manifold 100 is increased.

[0062] Also, along the flow direction of the coolant in the liquid inlet manifold 100, the number of balls 431 in each first opening adjustment member 400 shows a decreasing trend. Therefore, it can be known that the total flow area of the communication slots 430 closer to the starting end of the liquid inlet manifold 100 is smaller. That is, by setting different numbers of balls 431, the flow area of the entire communication slot 430 closer to the starting end of the liquid inlet manifold 100 is effectively reduced, and further, the flow rate of the coolant in the entire communication slot 430 closer to the starting end of the liquid inlet manifold 100 is reduced, achieving the liquid inlet volume balance of the liquid distribution pipes 300 at different positions in the entire liquid cooling heat exchange device.

[0063] Furthermore, since the sum of the inner diameters of all the balls 431 in each communication slot 430 is smaller than the length of the communication slot 430 along the length direction of the liquid inlet manifold 100, the communication between the liquid inlet manifold 100 and the liquid distribution pipe 300 is not completely blocked by the communication slot 430.

[0064] Furthermore, in one embodiment, the density p of the balls 431 and the density q of the coolant satisfy q < p < 2q.

[0065] In this way, q < p can prevent the balls 431 from being unable to block the communication slot 430 due to too small density of the balls 431, and p < 2q can prevent the balls 431 from being difficult to move in the communication slot 430 due to too large density of the balls 431.

[0066] Specifically, the balls 431 can be hollow metal balls 431 or plastic balls 431, and are not limited here one by one.

[0067] In one embodiment, as Figure 3 and Figure 4 shown, the liquid inlet manifold 100 is provided with an assembly opening 110. One end of the first opening adjustment member 400 extends into the liquid inlet manifold 100 through the assembly opening 110 to form a fixed slot 440, and the other end stops at the opening of the assembly opening 110. One end of the liquid distribution pipe 300 communicating with the liquid inlet manifold 100 is inserted into the fixed slot 440 and fixedly connected to the inner wall of the fixed slot 440.

[0068] In this way, it is beneficial to the connection of the liquid distribution pipe 300, the first opening adjustment member 400 and the liquid inlet manifold 100.

[0069] Specifically, the liquid distribution pipe 300, the first opening adjustment member 400 and the liquid inlet manifold 100 are welded.

[0070] Furthermore, in one embodiment, the cross-section of the first opening adjustment member 400 is in an Ω shape.

[0071] In one embodiment, as Figure 9As shown, a second opening adjustment component 500 is also provided at the connection point between each liquid distribution pipe 300 and the liquid outlet collection pipe 200. The second opening adjustment component 500 is used to control the opening degree of the connection point between the liquid outlet collection pipe 200 and the corresponding liquid distribution pipe 300. The opening degree of the second opening adjustment component 500 connected to each liquid distribution pipe 300 is positively correlated with the length of the liquid distribution pipe 300 from the starting end of the liquid outlet collection pipe 200.

[0072] Since the direction of the starting end of the outlet manifold 200 is opposite to that of the starting end of the inlet manifold 100, it can be seen from the above that the opening degree of the second opening degree adjusting member 500 connected to each distributor 300 is negatively correlated with the length of the distributor 300 from the starting end of the inlet manifold 100. That is, the farther away from the starting end of the inlet manifold 100, the larger the opening degree of the first opening degree adjusting member 400 and the smaller the opening degree of the second opening degree adjusting member 500. This helps to prolong the residence time of the coolant in the distributor 300 that is farther away from the starting end of the inlet manifold channel, thereby enhancing the cooling effect of the distributor 300 that is farther away from the starting end of the inlet manifold channel.

[0073] 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.

[0074] 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.

Claims

1. A liquid-cooled heat exchange device, characterized in that, It includes an inlet manifold (100), an outlet manifold (200), a distributor (300), and a first opening adjustment component (400). The plurality of distributors (300) are respectively connected to the inlet manifold (100) and the outlet manifold (200). Each distributor (300) and the inlet manifold (100) are respectively provided with a first opening adjustment component (400). The first opening adjustment component (400) is used to control the opening of the inlet manifold (100) and the corresponding distributor (300). Each of the first opening adjustment components (400) is provided with a connecting slot (430) extending along the length direction of the liquid inlet manifold (100). The liquid inlet manifold (100) is connected to the corresponding liquid distribution pipe (300) through the connecting slot (430) on each of the first opening adjustment components (400). A plurality of balls (431) are provided at the connecting slot (430). The balls (431) extend along the length direction of the liquid inlet manifold (100) and the corresponding liquid distribution pipe (300). The connecting slots (430) are movable to open or close a portion of the connecting slots (430). The sum of the inner diameters of all the balls (431) in each connecting slot (430) is less than the length of the connecting slot (430) along the length of the inlet manifold (100). Along the flow direction of the coolant in the inlet manifold (100), the number of balls (431) in each first opening adjustment member (400) decreases.

2. The liquid-cooled heat exchanger according to claim 1, characterized in that, The opening degree of the first opening adjustment member (400) connected to each of the liquid distribution tubes (300) is positively correlated with the length of the liquid distribution tube (300) from the starting end of the liquid inlet manifold (100).

3. The liquid-cooled heat exchanger according to claim 1, characterized in that, The density p of the ball bearing (431) and the density q of the coolant satisfy the following condition: q <p<2q。 4. The liquid-cooled heat exchanger according to claim 2, characterized in that, The opening degree of the first opening adjustment member (400) connected to each of the liquid distribution pipes (300) is proportional to the square of the length of the liquid distribution pipe (300) from the starting end of the liquid inlet manifold (100).

5. The liquid-cooled heat exchanger according to claim 2, characterized in that, The first opening adjustment member (400) is provided with a plurality of first connecting holes (410) with the same flow area distributed along the length direction of the liquid inlet manifold (100). The liquid inlet manifold (100) is connected to the corresponding liquid distribution pipe (300) through the plurality of first connecting holes (410) on each first opening adjustment member (400). Furthermore, the number of first connecting holes (410) on each first opening adjustment member (400) is positively correlated with the length of the first opening adjustment member (400) from the starting end of the liquid inlet manifold (100).

6. The liquid-cooled heat exchanger according to claim 5, characterized in that, Along the flow direction of the coolant in the inlet manifold (100), the number of the first connecting holes (410) on different first opening adjustment members (400) is distributed in an arithmetic sequence. Alternatively, along the flow direction of the coolant in the inlet manifold (100), the number of the first connecting holes (410) on different first opening adjustment members (400) is distributed in a geometric sequence.

7. The liquid-cooled heat exchanger according to claim 5, characterized in that, It also includes a tapered diversion protrusion (600), the bottom end of which is connected to the side end face of the first opening adjustment member (400) facing the liquid inlet manifold (100), the tip of which extends away from the liquid distribution pipe (300), and the diversion protrusion (600) is disposed between adjacent first connecting holes (410) so that coolant can enter adjacent first connecting holes (410) through the diversion protrusion (600).

8. The liquid-cooled heat exchanger according to claim 2, characterized in that, The first opening adjustment member (400) is provided with a plurality of second connecting holes (420) distributed along the length direction of the liquid inlet manifold (100). The number of second connecting holes (420) provided on each first opening adjustment member (400) is equal, and the flow area of ​​each second connecting hole (420) is positively correlated with the length of the second connecting hole (420) from the starting end of the liquid inlet manifold (100).

9. The liquid-cooled heat exchanger according to claim 2, characterized in that, A second opening adjustment component (500) is provided at the connection point between each of the liquid distribution pipes (300) and the liquid outlet collection pipe (200). The second opening adjustment component (500) is used to control the opening of the connection point between the liquid outlet collection pipe (200) and the corresponding liquid distribution pipe (300). The opening size of the second opening adjustment component (500) connected to each of the liquid distribution pipes (300) is positively correlated with the length of the liquid distribution pipe (300) from the starting end of the liquid outlet collection pipe (200).

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