Double-sided heat dissipation liquid cooling plate and electrical equipment

Abstract

The invention discloses a double-sided heat dissipation liquid cooling plate, a liquid inlet and a liquid outlet are formed in the end faces of the two ends of the double-sided heat dissipation liquid cooling plate, a heat dissipation pipe is wound in the double-sided heat dissipation liquid cooling plate, the heat dissipation pipe comprises a liquid inlet pipe and a liquid outlet pipe, the liquid inlet pipe comprises a first pipe, a second pipe and a third pipe which are communicated with one another, the first end of the first pipe is communicated with the liquid inlet, and the second end of the second pipe is communicated with the liquid outlet; the pipe diameter of the third pipe is larger than that of the second pipe; the liquid outlet pipe comprises a fourth pipe, a fifth pipe, a sixth pipe and a seventh pipe which are communicated with one another, and the first end of the fourth pipe is communicated with the liquid outlet; the inlet of the first loop module is communicated with the second end of the second pipe, and the outlet is communicated with the second end of the fifth pipe; the inlet of the second loop module is communicated with the second end of the third pipe, and the outlet is communicated with the second end of the sixth pipe; an inlet of the third loop module is communicated with an outlet of the second loop module and the second end of the sixth pipe, an outlet of the third loop module is communicated with the second end of the seventh pipe, and the diameter of the inlet of the third loop module is larger than that of the sixth pipe.

Description

Technical Field

[0001] The present invention relates to the technical field of liquid cooling plates, and in particular to a double-sided heat dissipation liquid cooling plate and electrical equipment. Background Art

[0002] PCS is a bidirectional energy storage converter, which converts AC power into DC power and DC power into AC power. Currently, the main cooling methods for PCS are forced air cooling and liquid cooling. Compared with air cooling, liquid cooling has the advantages of fast heat dissipation, low noise and low energy consumption.

[0003] However, the existing PCS liquid cooling technology mainly includes the following two common methods. The first is to use partitions in the liquid cooling plate to divide the cooling plate into multiple cooling flow channels to extend the flow route of the coolant. Although this method expands the heat dissipation area of ​​the cooling plate, more coolant needs to be introduced to fill the cooling plate with liquid, which increases the cost; the second is to use a pipe to bend and coil in the liquid cooling plate, but the temperature difference of the coolant in the front and rear ends of the pipe is large. When the coolant flows to the rear end of the pipe, the coolant temperature is high and the heat dissipation effect is poor. Summary of the invention

[0004] The present invention provides a double-sided heat dissipation liquid cold plate to solve the technical problems that more coolant needs to be introduced to fill the cooling plate with liquid, which increases the cost, and the large temperature difference of the coolant between the front end and the rear end of the pipeline leads to poor heat dissipation effect at the rear end of the pipeline.

[0005] In order to solve the above technical problems, an embodiment of the present invention provides a double-sided heat dissipation liquid cold plate, wherein a liquid inlet and a liquid outlet are provided at both ends of the double-sided heat dissipation liquid cold plate, the double-sided heat dissipation liquid cold plate has a first area close to the liquid inlet, a second area close to the liquid outlet, and an edge area away from the liquid inlet and the liquid outlet, and a heat dissipation pipe is coiled inside the double-sided heat dissipation liquid cold plate, and the heat dissipation pipe includes:

[0006] A liquid inlet pipe, the liquid inlet pipe comprises a first pipe, a second pipe and a third pipe, the first end of the first pipe is connected to the liquid inlet, the first ends of the second pipe and the third pipe are both connected to the second end of the first pipe, and the diameter of the third pipe is larger than the diameter of the second pipe;

[0007] a liquid outlet pipe, the liquid outlet pipe comprising a fourth pipe, a fifth pipe, a sixth pipe and a seventh pipe, the first end of the fourth pipe is connected to the liquid outlet, and the first ends of the fifth pipe, the sixth pipe and the seventh pipe are all connected to the second end of the fourth pipe;

[0008] A first loop module located in the first zone, the liquid inlet pipe is located on a side of the first loop module away from the second zone, the inlet of the first loop module is connected to the second end of the second pipe, and the outlet of the first loop module is connected to the second end of the fifth pipe;

[0009] a second loop module located in the second zone, wherein the inlet of the second loop module is communicated with the second end of the third pipe, and the outlet of the second loop module is communicated with the second end of the sixth pipe;

[0010] A third loop module is located in the edge area, the inlet of the third loop module is connected with the outlet of the second loop module and the second end of the sixth tube, the inlet diameter of the third loop module is larger than the tube diameter of the sixth tube, and the outlet of the third loop module is connected with the second end of the seventh tube.

[0011] Furthermore, the relationship between the volume of the first tube, the volume of the second tube and the volume of the third tube is:

[0012] D 1 2 L 1 =D 2 2 L 2 +D 3 2 L 3

[0013] Where D 1 is the diameter of the first tube, L 1 is the length of the first tube, D 2 is the diameter of the second tube, L 2 is the length of the second tube, D 3 is the diameter of the third pipe, L 3 is the length of the third tube.

[0014] Furthermore, the relationship between the diameter of the first tube, the diameter of the second tube and the diameter of the third tube is:

[0015] D 1 =2.3D 2 =1.5D 3

[0016] Where D 1 is the diameter of the first tube, D 2 is the diameter of the second tube, D 3 is the diameter of the third tube.

[0017] Further, the first loop module includes a first liquid inlet pipeline, a first cooling pipeline and a first liquid outlet pipeline, one end of the first liquid inlet pipeline is connected to the second end of the second tube, the first cooling pipeline includes multiple first branches, the inlet of each first branch is connected to the other end of the first liquid inlet pipeline, the outlet of each first branch is connected to one end of the first liquid outlet pipeline, and the other end of the first liquid outlet pipeline is connected to the second end of the fifth tube.

[0018] Furthermore, the diameter of the first liquid inlet pipeline gradually tapers from one end close to the second tube to the other end, wherein the diameter of the first liquid inlet pipeline at the beginning is three times the diameter of the end.

[0019] Furthermore, the second loop module includes a second liquid inlet pipeline, a second cooling pipeline and a second liquid outlet pipeline, one end of the second liquid inlet pipeline is connected to the second end of the third tube, the second cooling pipeline includes a plurality of second branches, the inlet of each second branch is connected to the other end of the second liquid inlet pipeline, the outlet of each second branch is connected to one end of the second liquid outlet pipeline, and the other end of the second liquid outlet pipeline is connected to the second end of the sixth tube.

[0020] Furthermore, the diameter of the second liquid inlet pipeline gradually tapers from one end close to the third tube to the other end, wherein the diameter of the starting end of the second liquid inlet pipeline is 4.5 times the diameter of the terminal end.

[0021] Further, the third loop module includes a third liquid inlet pipeline, a third cooling pipeline and a third liquid outlet pipeline, one end of the third liquid inlet pipeline is connected to the outlet of the second liquid outlet pipeline and the second end of the sixth tube, the third cooling pipeline includes multiple third branches, a fourth branch, and multiple fifth branches, the inlet of each third branch is connected to the other end of the third liquid inlet pipeline, the outlet of each third branch is connected to the inlet of the fourth branch, the inlet of each fifth branch is connected to the outlet of the fourth branch, the outlet of each fifth branch is connected to one end of the third liquid outlet pipeline, and the other end of the third liquid outlet pipeline is connected to the second end of the seventh tube.

[0022] Furthermore, the diameter of the third liquid inlet pipeline is greater than the diameter of the third liquid outlet pipeline.

[0023] The embodiment of the present invention further provides an electrical device, comprising a chassis body and a first power board, a second power board, a plurality of first inverter inductors, a plurality of second inverter inductors, and the above-mentioned double-sided heat dissipation liquid cooling plate arranged in the chassis body;

[0024] One end of the first power board and the second power board are located in the first area, and the other end is located in the second area, the first power board and the second power board are arranged back to back, and the first power board is spaced from the second power board;

[0025] A plurality of the first inverter inductors and a plurality of the second inverter inductors are located in the edge area, a plurality of the first inverter inductors are located on a side of the first power board, a plurality of the second inverter inductors are located on a side of the second power board, and the first inverter inductors and the second inverter inductors are arranged in opposite directions to each other;

[0026] The double-sided heat dissipation liquid cooling plate is located between the first power board and the second power board, and between the first inverter inductor and the second inverter inductor.

[0027] Beneficial effects of the embodiments of the present invention:

[0028] The inlet of the first loop module of the double-sided heat dissipation liquid cold plate of the present invention is connected with the second pipe, the outlet of the first loop module is connected with the fifth pipe, the inlet of the second loop module is connected with the third pipe, and the outlet of the second loop module is connected with the sixth pipe, that is, the first loop module and the second loop module are connected in parallel, so that the coolant in the liquid inlet pipe flows from the second pipe to the first loop module and from the third pipe to the second loop module at the same time. Since the first loop module is located in the first area close to the liquid inlet and the second loop module is located in the second area close to the liquid outlet, the diameter of the second pipe is smaller than the diameter of the third pipe, so that the coolant flows to the second loop module more and faster, thereby shortening the time difference between the coolant reaching the first loop module and reaching the second loop module. In addition, the coolant in the liquid inlet pipe flows directly into the first loop module and the second loop module. Compared with the connection mode of the first loop module and the second loop module in series in the prior art, the present invention can greatly reduce the temperature difference between the first loop module and the second loop module, so that each area of ​​the double-sided heat dissipation liquid cold plate can achieve the cooling effect at the same time, and improve the heat dissipation effect of the double-sided heat dissipation liquid cold plate.

[0029] The inlet of the third loop module is connected to the outlet of the second loop module, and the outlet of the third loop module is connected to the seventh tube, that is, the third loop module is connected in series with the second loop module, and the second liquid outlet pipeline of the second loop module is connected to the third liquid inlet pipeline and the sixth tube. The diameter of the third liquid inlet pipeline is smaller than the diameter of the sixth tube, so that the second liquid outlet pipeline will flow more into the third liquid inlet pipeline, allowing the third loop module to achieve cooling and heat dissipation. Since the first liquid outlet pipeline of the first loop module is connected to the fifth tube, the coolant flows directly to the liquid outlet. Without affecting the coolant circulation of the cooling equipment, the coolant flowing out of the second loop module flows to the third loop module for heat dissipation, which can expand the heat dissipation area without greatly increasing the amount of coolant supplied.

[0030] The first power board and the second power board of the electrical equipment of the present invention are arranged in a spaced relationship and in a back-to-back manner. One end of the first power board and the second power board are located in the first zone, and the other end is located in the second zone. The above-mentioned double-sided heat dissipation liquid cooling plate is adopted to improve the overall heat dissipation effect of the first power board and the second power board, so that the temperature of the first power board and the second power board can be maintained at a certain low temperature; and the first power board and the second power board are respectively arranged on the two sides of the double-sided heat dissipation liquid cooling plate, so that the first power board and the second power board can be cooled at the same time, thereby improving the integration of the bidirectional energy storage inverter and reducing the occupied space.

[0031] The plurality of first inverter inductors and the plurality of second inverter inductors are located in the edge area, and the third loop module dissipates heat for the plurality of first inverter inductors and the plurality of second inverter inductors, thereby expanding the heat dissipation area of ​​the double-sided heat dissipation liquid cold plate and reducing the temperature of the chassis body. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a schematic diagram of the structure of a double-sided heat dissipation liquid cold plate;

[0033] Figure 2 It is a schematic diagram of the structure of the heat pipe;

[0034] Figure 3 It is a schematic diagram of the symbol marking of the liquid inlet pipe;

[0035] Figure 4 It is a schematic diagram of the structure of the electrical equipment;

[0036] Figure 5 It is a three-dimensional schematic diagram of the internal structure of electrical equipment;

[0037] Figure 6 It is a plan view of the internal structure of electrical equipment;

[0038] The reference numerals of the drawings in the specification are as follows:

[0039] 100, double-sided heat dissipation liquid cold plate, 1001, liquid inlet, 1002, liquid outlet, 100a, first zone, 100b, second zone, 100c, edge zone, 200, chassis body, 300, first power board, 400, second power board, 500, first inverter inductor, 600, second inverter inductor, 700, circulation fan;

[0040] 10. liquid inlet pipe, 101. first pipe, 102. second pipe, 103. third pipe, 11. first loop module, 111. first liquid inlet pipeline, 112. first cooling pipeline, 1121. first branch, 113. first liquid outlet pipeline, 12. second loop module, 121. second liquid inlet pipeline, 122. second cooling pipeline, 1221. second branch, 123. second liquid outlet pipeline, 13. third loop module, 131. third liquid inlet pipeline, 132. third cooling pipeline, 1321. third branch, 1322. fourth branch, 1323. fifth branch, 133. third liquid outlet pipeline, 14. liquid outlet pipe, 141. fourth pipe, 142. fifth pipe, 143. sixth pipe, 144. seventh pipe, 15. extension pipe. DETAILED DESCRIPTION

[0041] The specific implementation of the present invention is further described in detail below in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0042] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply 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 a limitation on the present application. In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" refers to two or more, unless otherwise clearly and specifically defined.

[0043] In the description of this application, 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, a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0044] In the present application, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0045] Embodiment 1

[0046] Please refer to Figures 1 to 3 The embodiment of the present invention provides a double-sided heat dissipation liquid cold plate 100, characterized in that a liquid inlet 1001 and a liquid outlet 1002 are provided at both ends of the double-sided heat dissipation liquid cold plate 100, the double-sided heat dissipation liquid cold plate 100 has a first area 100a close to the liquid inlet 1001, a second area 100b close to the liquid outlet 1002, and an edge area 100c away from the liquid inlet 1001 and the liquid outlet 1002, and a heat dissipation pipe is coiled inside the double-sided heat dissipation liquid cold plate 100, and the heat dissipation pipe includes:

[0047] The liquid inlet pipe 10 includes a first pipe 101, a second pipe 102 and a third pipe 103. The first end of the first pipe 101 is connected to the liquid inlet 1001, and the first ends of the second pipe 102 and the third pipe 103 are both connected to the second end of the first pipe 101. The diameter of the third pipe 103 is larger than the diameter of the second pipe 102.

[0048] The liquid outlet pipe 14 includes a fourth pipe 141, a fifth pipe 142, a sixth pipe 143 and a seventh pipe 144. The first end of the fourth pipe 141 is connected to the liquid outlet 1002, and the first ends of the fifth pipe 142, the sixth pipe 143 and the seventh pipe 144 are all connected to the second end of the fourth pipe 141;

[0049] The first loop module 11 is located in the first zone 100a, the liquid inlet pipe 10 is located on the side of the first loop module 11 away from the second zone 100b, the inlet of the first loop module 11 is connected to the second end of the second pipe 102, and the outlet of the first loop module 11 is connected to the second end of the fifth pipe 142;

[0050] The second loop module 12 is located in the second zone 100b, the inlet of the second loop module 12 is connected to the second end of the third pipe 103, and the outlet of the second loop module 12 is connected to the second end of the sixth pipe 143;

[0051] The third loop module 13 is located in the edge area 100c, and the inlet of the third loop module 13 is connected to the outlet of the second loop module 12 and the second end of the sixth tube 143. The inlet diameter of the third loop module 13 is larger than the diameter of the sixth tube 143, and the outlet of the third loop module 13 is connected to the second end of the seventh tube 144.

[0052] Specifically, the liquid inlet 1001 and the liquid outlet 1002 can be located on the same end surface of the double-sided heat dissipation liquid cold plate 100, but the liquid inlet 1001 and the liquid outlet 1002 are located at both ends of the double-sided heat dissipation liquid cold plate 100. Of course, the liquid inlet 1001 and the liquid outlet 1002 can also be separately arranged on two opposite end surfaces of the double-sided heat dissipation liquid cold plate 100.

[0053] In a specific embodiment, the double-sided heat dissipation liquid cold plate 100 is arranged in a chassis case 200 of an electrical device, the liquid inlet 1001 is connected to the outlet of the cooling device through an extension tube 15, and the liquid outlet 1002 is connected to the return port of the cooling device through an extension tube 15. The extension tube 15 is located in the chassis case 200 and is used to connect the double-sided heat dissipation liquid cold plate 100 and the pipeline of the cooling device.

[0054] In this embodiment, when the liquid inlet 1001 is located at the lower left end of the double-sided heat dissipation liquid cold plate 100 and the liquid outlet 1002 is located at the lower right end of the double-sided heat dissipation liquid cold plate 100, the first area 100a is the lower left half of the double-sided heat dissipation liquid cold plate 100, the second area 100b is the lower right half of the double-sided heat dissipation liquid cold plate 100, and the upper half is the part away from the liquid inlet 1001 and the liquid outlet 1002, that is, the edge area 100c.

[0055] In this embodiment, the liquid inlet pipe 10 is used to connect to the outlet of the cooling device, the outlet of the cooling device is connected to the liquid inlet 1001, the liquid inlet 1001 is connected to the first tube 101, and the cooling device transfers the cooled coolant to the first tube 101 and flows out from the second tube 102 and the third tube 103.

[0056] The liquid outlet pipe 14 is used to connect with the reflux port of the cooling device, the reflux port of the cooling device is connected with the liquid outlet 1002, and the fourth pipe 141 is connected with the liquid outlet 1002. The coolant flowing through the first loop module 11, the second loop module 12 and the third loop module 13 respectively converges from the fifth pipe 142, the sixth pipe 143 and the seventh pipe 144 to the fourth pipe 141, and then flows to the liquid outlet 1002. After the coolant flows through the double-sided heat dissipation liquid cold plate 100, it exchanges heat and cools in the cooling device to achieve circulation.

[0057] In this embodiment, the inlet of the first loop module 11 is connected to the second tube 102, the outlet of the first loop module 11 is connected to the fifth tube 142, the inlet of the second loop module 12 is connected to the third tube 103, and the outlet of the second loop module 12 is connected to the sixth tube 143, that is, the first loop module 11 and the second loop module 12 are connected in parallel, so that the coolant flows from the second tube 102 to the first loop module 11 and from the third tube 103 to the second loop module 12 at the same time. Since the diameter of the second tube 102 is set to be smaller than the diameter of the third tube 103, the coolant flows to the second loop module 12 more and faster, thereby shortening the time difference between the coolant reaching the first loop module 11 and reaching the second loop module 12.

[0058] The first loop module 11 and the second loop module 12 are connected in parallel, so that the coolant in the liquid inlet pipe 10 can flow directly to the first loop module 11 and the second loop module 12. The temperature difference between the coolant in the first loop module 11 and the second loop module 12 and the coolant in the liquid inlet pipe 10 is small, and the heat dissipation effect is better. It can be suitable for large-sized circuit boards and / or circuit boards with a large number of heat-generating components installed, such as a large-sized power board with a large number of MOS tubes installed.

[0059] It can be understood that when a large number of MOS tubes are installed on a large-sized power board, the length extension direction of the power board can be roughly the same as the arrangement direction of the first loop module 11 and the second loop module 12, that is, one end of the power board is located in the first area 100a, and the other end is located in the second area 100b; or, the first loop module 11 and the second loop module 12 are evenly distributed according to the actual situation of the power board, so that the first loop module 11 and the second loop module 12 can dissipate heat for the power board as a whole at the same time, and there will be no situation where the temperature of the part close to the liquid inlet pipe 10 is low and the temperature of the part far from the liquid inlet pipe 10 is low, so that the temperature difference of the overall power board is small and the heat dissipation effect is better.

[0060] The inlet of the third loop module 13 is communicated with the outlet of the second loop module 12, and the outlet of the third loop module 13 is communicated with the seventh pipe 144, that is, the third loop module 13 is connected in series with the second loop module 12. Since the coolant of the third loop module 13 flows through the second loop module 12, the third loop module 13 can be used to dissipate heat for components with less heat generation than for components of the first loop module 11 and the second loop module 12 that need to dissipate heat.

[0061] When the coolant flowing through the second loop module 12 flows to the outlet, since the inlet diameter of the third loop module 13 is larger than the diameter of the sixth tube 143, most of the coolant flows to the third loop module 13, a small part of the coolant flows to the sixth tube 143, and finally flows to the liquid outlet 1002.

[0062] The first loop module 11 of the present invention is connected in parallel with the second loop module 12, so that the coolant in the liquid inlet pipe 10 can flow into the first loop module 11 and the second loop module 12 at the same time. The first loop module 11 is located in the first area 100a near the liquid inlet 1001, and the second loop module 12 is located in the second area 100b near the liquid outlet 1002. The diameter of the second pipe 102 is smaller than the diameter of the third pipe 103, so that the coolant flows to the second loop module 12 more and faster, thereby shortening the time difference between the coolant reaching the first loop module 11 and reaching the second loop module 12. In addition, the coolant in the liquid inlet pipe 10 flows directly into the first loop module 11 and the second loop module 12. Compared with the connection mode of the first loop module 11 and the second loop module 12 in series in the prior art, the present invention can greatly reduce the temperature difference between the first loop module 11 and the second loop module 12, so that each area of ​​the double-sided heat dissipation liquid cold plate 100 can achieve the cooling effect at the same time, thereby improving the heat dissipation effect of the double-sided heat dissipation liquid cold plate 100.

[0063] The third loop module 13 is connected in series with the second loop module 12, the second liquid outlet pipeline 123 of the second loop module 12 is connected with the third liquid inlet pipeline 131 and the sixth pipe 143, the diameter of the third liquid inlet pipeline 131 is smaller than the diameter of the sixth pipe 143, so that the second liquid outlet pipeline 123 will flow more into the third liquid inlet pipeline 131, so that the third loop module 13 can achieve cooling and heat dissipation. Since the first liquid outlet pipeline 113 of the first loop module 11 is connected with the fifth pipe 142, the coolant flows directly to the liquid outlet 1002, and the coolant flowing out of the second loop module 12 flows to the third loop module 13 for heat dissipation without affecting the coolant circulation of the cooling equipment, which can expand the heat dissipation area without greatly increasing the amount of coolant supplied.

[0064] like Figure 3 As shown, specifically, the relationship between the volume of the first tube, the volume of the second tube and the volume of the third tube is:

[0065] D 1 2 L 1 =D 2 2 L 2 +D 3 2 L 3

[0066] Where D 1 is the diameter of the first tube, L 1 is the length of the first tube, D 2 is the diameter of the second tube, L 2 is the length of the second tube, D 3 is the diameter of the third pipe, L 3 is the length of the third tube.

[0067] Specifically, the relationship between the diameter of the first tube, the diameter of the second tube, and the diameter of the third tube is:

[0068] D 1 =2.3D 2 =1.5D 3

[0069] Where D 1 is the diameter of the first tube, D 2 is the diameter of the second tube, D 3 is the diameter of the third tube.

[0070] Specifically, the first loop module 11 includes a first liquid inlet pipeline 111, a first cooling pipeline 112 and a first liquid outlet pipeline 113. One end of the first liquid inlet pipeline 111 is connected to the second end of the second tube 102. The first cooling pipeline 112 includes a plurality of first branches 1121. The inlet of each first branch 1121 is connected to the other end of the first liquid inlet pipeline 111. The outlet of each first branch 1121 is connected to one end of the first liquid outlet pipeline 113. The other end of the first liquid outlet pipeline 113 is connected to the second end of the fifth tube 142.

[0071] Preferably, the diameter of the first liquid inlet pipeline 111 tapers from one end close to the second tube 102 to the other end, wherein the diameter of the first liquid inlet pipeline 111 at the beginning is three times the diameter of the end. Since the diameter of the first liquid inlet pipeline 111 tapers from one end close to the second tube 102 to the other end, the inlet diameter of the first branch 1121 closer to the second end of the second tube 102 is larger.

[0072] More specifically, the diameter of the first liquid inlet pipeline 111 may also taper gradually from one end close to the second tube 102 to the other end in a stepped manner, and two adjacent first branches 1121 are located at different steps, that is, the inlet diameters of two adjacent first branches 1121 are different.

[0073] Specifically, the second loop module 12 includes a second liquid inlet pipeline 121, a second cooling pipeline 122 and a second liquid outlet pipeline 123. One end of the second liquid inlet pipeline 121 is connected to the second end of the third tube 103. The second cooling pipeline 122 includes a plurality of second branches 1221. The inlet of each second branch 1221 is connected to the other end of the second liquid inlet pipeline 121. The outlet of each second branch 1221 is connected to one end of the second liquid outlet pipeline 123. The other end of the second liquid outlet pipeline 123 is connected to the second end of the sixth tube 143.

[0074] Preferably, the diameter of the second liquid inlet pipeline 121 tapers from one end close to the third tube 103 to the other end, wherein the diameter of the first end of the second liquid inlet pipeline 121 is 4.5 times the diameter of the last end. Since the diameter of the second liquid inlet pipeline 121 tapers from one end close to the third tube 103 to the other end, the inlet diameter of the second branch 1221 closer to the second end of the third tube 103 is larger.

[0075] More specifically, the diameter of the second liquid inlet pipeline 121 may also taper gradually from one end close to the third tube 103 to the other end in a stepped manner, and two adjacent second branches 1221 are located at different steps, that is, the inlet diameters of two adjacent second branches 1221 are different.

[0076] In this embodiment, the first branch 1121 and the second branch 1221 are both formed by bending and folding a pipe, which can be folded 4 times. The flow path of the coolant in the first branch 1121 and the second branch 1221 can be extended, thereby extending the cooling time and improving the cooling effect.

[0077] The specific number of the first branches 1121 can be 6, and the specific number of the second branches 1121 can also be 6. The number of the first branches 1121 and the second branches 1221 can be adjusted according to the size of the power board that needs to dissipate heat.

[0078] Specifically, the outlet diameter of each first branch 1121 may be equal, and the outlet diameter of each second branch 1221 may be equal.

[0079] like Figure 2 As shown, the liquid inlet pipe 10 of this embodiment is located on the left side of the first loop module 11, the left end of the first liquid inlet pipeline 111 is connected to the second end of the second pipe 102, and the right end extends outward and gradually becomes thinner. Specifically, each first branch 1121 is connected to the first liquid inlet pipeline 111, and multiple first branches 1121 are arranged horizontally in a straight line, and the diameter of the first liquid inlet pipeline 111 gradually becomes thinner from the left side to the right side.

[0080] The second loop module 12 is located on the right side of the first loop module 11. The left end of the second liquid inlet pipeline 121 is connected to the third tube 103, and the right end extends outward and gradually becomes thinner. Specifically, each second branch 1221 is connected to the second liquid inlet pipeline 121, and the multiple second branches 1221 are arranged horizontally in a straight line. From the left side to the right side, the diameter of the second liquid inlet pipeline 121 gradually becomes thinner.

[0081] Specifically, the third loop module 13 includes a third liquid inlet pipeline 131, a third cooling pipeline 132 and a third liquid outlet pipeline 133. One end of the third liquid inlet pipeline 131 is connected to the outlet of the second liquid outlet pipeline 123 and the second end of the sixth tube 143. The third cooling pipeline 132 includes multiple third branches 1321, a fourth branch 1322, and multiple fifth branches 1323. The inlet of each third branch 1321 is connected to the other end of the third liquid inlet pipeline 131, the outlet of each third branch 1321 is connected to the inlet of the fourth branch 1322, the inlet of each fifth branch 1323 is connected to the outlet of the fourth branch 1322, the outlet of each fifth branch 1323 is connected to one end of the third liquid outlet pipeline 133, and the other end of the third liquid outlet pipeline 133 is connected to the second end of the seventh tube 144.

[0082] The third loop module 13 of this embodiment is located above the first loop module 11 and the second loop module 12. The number of the third branch 1321 and the fifth branch 1323 are both 2, which extends the cooling routes of the third branch 1321 and the fifth branch 1323 to improve the heat dissipation effect.

[0083] In other embodiments, since the water flows of the two third branches 1321 merge into the fourth branch 1322, the diameter of the fourth branch 1322 can be larger than the diameters of the third branch 1321 and the fifth branch 1323, so that the water flows smoothly into the fifth branch 1323 and reduces the pipeline pressure of the fourth branch 1322.

[0084] Preferably, the diameter of the third liquid inlet pipeline 131 is greater than the diameter of the third liquid outlet pipeline 133 in order to slow down the flow rate of the coolant in the fifth branch 1323 and improve the heat dissipation effect of the third loop module 13.

[0085] Embodiment 2

[0086] Please refer to Figures 1 to 6 , an embodiment of the present invention further provides an electrical device, comprising a chassis body 200 and a first power board 300, a second power board 400, a plurality of first inverter inductors 500, a plurality of second inverter inductors 600, and the above-mentioned double-sided heat dissipation liquid cold plate 100 arranged in the chassis body 200;

[0087] One end of the first power board 300 and the second power board 400 are located in the first area 100a, and the other end is located in the second area 100b. The first power board 300 and the second power board 400 are arranged opposite to each other, and the first power board 300 is spaced from the second power board 400.

[0088] A plurality of first inverter inductors 500 and a plurality of second inverter inductors 600 are located in the edge area 100c, the plurality of first inverter inductors 500 are located on the side of the first power board 300, the plurality of second inverter inductors 600 are located on the side of the second power board 400, and the first inverter inductors 500 and the second inverter inductors 600 are arranged in a back-to-back manner.

[0089] The double-sided heat dissipation liquid cold plate 100 is located between the first power plate 300 and the second power plate 400 , and between the first inverter inductor 500 and the second inverter inductor 600 .

[0090] Specifically, the electrical device is a bidirectional energy storage converter.

[0091] The joints between the top plate, the surrounding side walls and the bottom plate of the chassis body 200 are sealed with sealing strips to seal the gaps at the joints, seal the space inside the chassis body 200, and protect the internal circuit boards. Specifically, the extension tube 15 can pass through a side wall of the chassis body 200, and the gap between the extension tube 15 and the side wall of the chassis body 200 is also sealed with a sealing strip. The other interfaces on the side wall are selected to meet the IP65 protection level, so that the waterproof level of the chassis body 200 reaches IP65.

[0092] The first power board 300 is spaced apart from the second power board 400. In this embodiment, the first power board 300 can be fixedly connected to the upper surface of the double-sided heat dissipation liquid cooling plate 100 through studs, and the second power board 400 can be fixedly connected to the lower surface of the double-sided heat dissipation liquid cooling plate 100 through studs.

[0093] The components mainly installed on the first power board 300 and the second power board 400 of this embodiment are several MOS tubes, which generate heat when working and are the main heat source of the first power board 300 and the second power board 400. In order to avoid burning out the components, it is necessary to dissipate heat from the first power board 300 and the second power board 400. In this embodiment, the heat dissipation method for the several MOS tubes is that the several MOS tubes are in contact with the surface of the double-sided heat dissipation liquid cold plate 100, and the heat of the MOS tubes is directly transferred to the double-sided heat dissipation liquid cold plate 100.

[0094] In this embodiment, the bidirectional energy storage converter can specifically be an 800KW bidirectional energy storage converter. The 800KW bidirectional energy storage converter in the prior art is usually formed by two 400KW bidirectional energy storage converters connected in series, but this obviously takes up a large space. In this embodiment, two 400KW bidirectional energy storage converters are integrated together in the chassis case 200 to improve the integration of the bidirectional energy storage converter. Since the heat dissipation effect of the existing liquid cooling plate is poor, the temperature difference between the coolant in the cooling pipe near the liquid inlet 1001 and the coolant in the cooling pipe near the liquid outlet 1002 is large. If the 800KW bidirectional energy storage converter uses a pipe to flow from the cooling pipe inlet of the liquid inlet 1001 to the outlet, its heat dissipation effect is not ideal, which affects the actual use of the 800KW bidirectional energy storage converter.

[0095] Therefore, the 800KW bidirectional energy storage converter of this embodiment adopts the above-mentioned double-sided heat dissipation liquid cold plate 100, and the first circuit module 11 and the second circuit module 12 of the double-sided heat dissipation liquid cold plate 100 can be distributed at the left and right ends of the first power board 300 and the second power board 400. The coolant flows into the first circuit module 11 and the second circuit module 12 at the same time, reducing the temperature difference of the coolant flowing into the first circuit module 11 and the second circuit module 12, and can dissipate heat at the left and right ends of the first power board 300 and the second power board 400 at the same time, so that the first power board The overall heat temperature of the first power plate 300 and the second power plate 400 is small, that is, the use of the above-mentioned double-sided heat dissipation liquid cooling plate 100 can improve the overall heat dissipation effect of the first power plate 300 and the second power plate 400, so that the temperature of the first power plate 300 and the second power plate 400 can be maintained at a certain low temperature; and the first power plate 300 and the second power plate 400 are respectively arranged on the two sides of the double-sided heat dissipation liquid cooling plate 100, which can dissipate heat for the first power plate 300 and the second power plate 400 at the same time, thereby improving the integration of the bidirectional energy storage inverter and reducing the occupied space.

[0096] Specifically, the first power board 300 and the second power board 400 are arranged back to back, which means that the back side of the first power board 300 is opposite to the back side of the second power board 400, and the orthographic projections of the first power board 300 and the second power board 400 overlap.

[0097] The first inverter inductor 500 and the second inverter inductor 600 are arranged in back-to-back correspondence, which means that the heat dissipation surface of the first inverter inductor 500 is opposite to the heat dissipation surface of the second power board 400 , and the orthographic projections of the first power board 300 and the second power board 400 overlap.

[0098] The first power board 300 and the second power board 400 are arranged in a back-to-back correspondence, and the first inverter inductor 500 and the second inverter inductor 600 are arranged in a back-to-back correspondence, so that the double-sided heat dissipation liquid cooling plate 100 can be sandwiched between the first power board 300 and the second power board 400, and the first inverter inductor 500 and the second inverter inductor 600, and the components on both sides of the double-sided heat dissipation liquid cooling plate 100 are cooled at the same time, which helps to improve the integration of the bidirectional energy storage inverter, reduce the volume of the bidirectional energy storage inverter, and reduce the occupied space.

[0099] Since the multiple first inverter inductors 500 and the multiple second inverter inductors 600 are also heat-generating components, but compared with the MOS tubes on the first power board 300 and the second power board 400, the first inverter inductors 500 and the second inverter inductors 600 generate less heat, the use of coolant flowing through the second loop module 12 can also meet the required heat dissipation effect.

[0100] like Figure 5 As shown, the first inverter inductor 500 can be attached to the upper surface of the double-sided heat dissipation liquid cold plate 100, and the second inverter inductor 600 can be attached to the lower surface of the double-sided heat dissipation liquid cold plate 100 for direct contact and heat conduction. Preferably, thermal conductive mud can also be arranged between the first inverter inductor 500 and the upper surface of the double-sided heat dissipation liquid cold plate 100, and between the second inverter inductor 600 and the lower surface of the double-sided heat dissipation liquid cold plate 100 to promote heat transfer.

[0101] In this embodiment, the first power board 300 is placed horizontally and extended, with one end of the first power board 300 located in the first zone 100a and the other end located in the second zone 100b. The first circuit module 11 dissipates heat to the portion of the first power board 300 located in the first zone 100a, and the second circuit module 12 dissipates heat to the portion of the first power board 300 located in the second zone 100b. The liquid inlet pipe 10 simultaneously connects the first circuit module 11 and the second circuit module 12, so that the coolant flows into the first circuit module 11 and the second circuit module 12 at the same time, thereby making the overall heat temperature difference of the first power board 300 small and the heat dissipation effect better. Since the first power board 300 and the second power board 400 are arranged in a back-to-back manner, the heat dissipation principle of the second power board 400 is the same as that of the first power board 300, which will not be repeated here.

[0102] A plurality of first inverter inductors 500 are located above the first power board 300 and arranged along the length direction of the first power board 300. The first inverter inductors 500 are located in the edge area 100c. Since the heat of the first inverter inductors 500 is less than the heat of the first power board 300, the coolant flowing through the second loop module 12 can flow into the third loop module 13 to dissipate heat for the first inverter inductors 500, thereby expanding the heat dissipation area of ​​the double-sided heat dissipation liquid cold plate 100 and reducing the temperature of the chassis body 200. The second inverter inductor 600 is arranged in a back-to-back correspondence with the first inverter inductor 500. The second inverter inductor 600 is also located in the edge area 100c. Its heat dissipation principle is the same as that of the first inverter inductor 500, which will not be repeated here.

[0103] Specifically, the orthographic projection height of the first loop module 11 and the second loop module 12 is greater than the orthographic projection height of the first power board 300 and the second power board 400, so that the first loop module 11 and the second loop module 12 in the double-sided heat dissipation liquid cooling plate 100 are partially exposed, and specifically the first liquid inlet pipeline 111, the first liquid outlet pipeline 113, the second liquid inlet pipeline 121 and the second liquid outlet pipeline 123 are located outside the orthographic projection range of the first power board 300 and the second power board 400.

[0104] More specifically, the plurality of first inverter inductors 500 are spaced apart so that there is a gap between two adjacent first inverter inductors 500 , and the plurality of second inverter inductors 600 are spaced apart so that there is a gap between two adjacent second inverter inductors 600 , thereby partially exposing the third loop module 13 in the double-sided heat dissipation liquid cold plate 100 .

[0105] Specifically, a circulation fan 700 is further provided in the chassis body 200, and the air outlet of the circulation fan 700 faces the double-sided heat dissipation liquid cold plate 100. The inside of the chassis body 200 is a closed space. When the heat generating components generate heat, the air temperature in the box is uneven, that is, the air temperature in the local area with the heat generating components is higher, and the air temperature in the local area without the heat generating components is lower. In order to avoid heat accumulation, the circulation fan 700 is used to turbulently flow the air in the chassis body 200, so that the air temperature in the box is basically the same.

[0106] Specifically, the number of circulating fans 700 can be multiple, one or more of which blows air towards the double-sided heat dissipation liquid cooling plate 100, and the remaining circulating fans 700 can blow air towards the double-sided heat dissipation liquid cooling plate 100, or can not blow air towards the double-sided heat dissipation liquid cooling plate 100. The purpose is to allow the air in the chassis case 200 to flow, so that the air temperature in the chassis case 200 is basically consistent, and heat exchange and heat dissipation can be performed between the air and the locally exposed part of the double-sided heat dissipation liquid cooling plate 100 to reduce the air temperature in the chassis case 200.

[0107] Since the double-sided heat dissipation liquid cooling plate 100 is partially exposed to the outside, the circulating fan 700 blows air toward the double-sided heat dissipation liquid cooling plate 100, so that the exposed part of the double-sided heat dissipation liquid cooling plate 100 can directly exchange heat with the air in the chassis case 200, further dissipating the temperature in the chassis case 200 and improving the heat dissipation effect of the electrical equipment.

[0108] Specifically, the first power board 300, the second power board 400, the plurality of first inverter inductors 500 and the plurality of second inverter inductors 600 are centrally arranged on one side of the chassis, so that the heat is concentrated, which facilitates the installation of the double-sided heat dissipation liquid cooling plate 100 for centralized heat dissipation.

[0109] The specific embodiments described above further illustrate the purpose, technical solutions and beneficial effects of the present invention. It should be understood that the above description is only a specific embodiment of the present invention and is not intended to limit the scope of protection of the present invention. It is particularly pointed out that for those skilled in the art, any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the scope of protection of the present invention.

Claims

1. A double-sided heat dissipation liquid cold plate, characterized in that: The double-sided heat dissipation liquid cold plate is provided with a liquid inlet and a liquid outlet at both ends, the double-sided heat dissipation liquid cold plate has a first area close to the liquid inlet, a second area close to the liquid outlet, and an edge area away from the liquid inlet and the liquid outlet, and a heat dissipation pipe is coiled inside the double-sided heat dissipation liquid cold plate, and the heat dissipation pipe includes: A liquid inlet pipe, the liquid inlet pipe comprises a first pipe, a second pipe and a third pipe, the first end of the first pipe is connected to the liquid inlet, the first ends of the second pipe and the third pipe are both connected to the second end of the first pipe, and the diameter of the third pipe is larger than the diameter of the second pipe; a liquid outlet pipe, the liquid outlet pipe comprising a fourth pipe, a fifth pipe, a sixth pipe and a seventh pipe, the first end of the fourth pipe is connected to the liquid outlet, and the first ends of the fifth pipe, the sixth pipe and the seventh pipe are all connected to the second end of the fourth pipe; A first loop module located in the first zone, the liquid inlet pipe is located on a side of the first loop module away from the second zone, the inlet of the first loop module is connected to the second end of the second pipe, and the outlet of the first loop module is connected to the second end of the fifth pipe; a second loop module located in the second zone, wherein the inlet of the second loop module is communicated with the second end of the third pipe, and the outlet of the second loop module is communicated with the second end of the sixth pipe; A third loop module is located in the edge area, the inlet of the third loop module is connected with the outlet of the second loop module and the second end of the sixth tube, the inlet diameter of the third loop module is larger than the tube diameter of the sixth tube, and the outlet of the third loop module is connected with the second end of the seventh tube.

2. The double-sided heat dissipation liquid cold plate according to claim 1, characterized in that: The relationship between the volume of the first tube, the volume of the second tube and the volume of the third tube is: <h2 style=";text-align:left;direction:ltr">D1<h2 style=";text-align:left;direction:ltr"> 2 <h2 style=";text-align:left;direction:ltr"> L1=D2<h2 style=";text-align:left;direction:ltr"> 2 <h2 style=";text-align:left;direction:ltr"> L2+D3<h2 style=";text-align:left;direction:ltr"> 2 <h2 style=";text-align:left;direction:ltr"> L3 In the formula, D1 is the diameter of the first tube, L1 is the length of the first tube, D2 is the diameter of the second tube, L2 is the length of the second tube, D3 is the diameter of the third tube, and L3 is the length of the third tube.

3. The double-sided heat dissipation liquid cold plate according to claim 1, characterized in that: The relationship between the diameter of the first tube, the diameter of the second tube and the diameter of the third tube is: D1=2.3D2=1.5D3 Wherein, D1 is the diameter of the first tube, D2 is the diameter of the second tube, and D3 is the diameter of the third tube.

4. The double-sided heat dissipation liquid cold plate according to claim 1, characterized in that: The first loop module includes a first liquid inlet pipeline, a first cooling pipeline and a first liquid outlet pipeline, one end of the first liquid inlet pipeline is connected to the second end of the second tube, the first cooling pipeline includes multiple first branches, the inlet of each first branch is connected to the other end of the first liquid inlet pipeline, the outlet of each first branch is connected to one end of the first liquid outlet pipeline, and the other end of the first liquid outlet pipeline is connected to the second end of the fifth tube.

5. The double-sided heat dissipation liquid cold plate according to claim 4, characterized in that: The diameter of the first liquid inlet pipeline gradually tapers from one end close to the second tube to the other end, wherein the diameter of the first liquid inlet pipeline at the beginning is three times the diameter of the end.

6. The double-sided heat dissipation liquid cold plate according to claim 1, characterized in that: The second loop module includes a second liquid inlet pipeline, a second cooling pipeline and a second liquid outlet pipeline, one end of the second liquid inlet pipeline is connected to the second end of the third tube, the second cooling pipeline includes a plurality of second branches, the inlet of each second branch is connected to the other end of the second liquid inlet pipeline, the outlet of each second branch is connected to one end of the second liquid outlet pipeline, and the other end of the second liquid outlet pipeline is connected to the second end of the sixth tube.

7. The double-sided heat dissipation liquid cold plate according to claim 6, characterized in that: The diameter of the second liquid inlet pipeline gradually tapers from one end close to the third tube to the other end, wherein the diameter of the starting end of the second liquid inlet pipeline is 4.5 times the diameter of the terminal end.

8. The double-sided heat dissipation liquid cold plate according to claim 1, characterized in that: The third loop module includes a third liquid inlet pipeline, a third cooling pipeline and a third liquid outlet pipeline. One end of the third liquid inlet pipeline is connected to the outlet of the second liquid outlet pipeline and the second end of the sixth tube. The third cooling pipeline includes multiple third branches, a fourth branch, and multiple fifth branches. The inlet of each third branch is connected to the other end of the third liquid inlet pipeline, the outlet of each third branch is connected to the inlet of the fourth branch, the inlet of each fifth branch is connected to the outlet of the fourth branch, the outlet of each fifth branch is connected to one end of the third liquid outlet pipeline, and the other end of the third liquid outlet pipeline is connected to the second end of the seventh tube.

9. The double-sided heat dissipation liquid cold plate according to claim 8, characterized in that: The diameter of the third liquid inlet pipeline is greater than the diameter of the third liquid outlet pipeline.

10. An electrical device, characterized in that: It comprises a chassis body and a first power board, a second power board, a plurality of first inverter inductors, a plurality of second inverter inductors, and a double-sided heat dissipation liquid cooling plate as claimed in any one of claims 1 to 9, which are arranged in the chassis body; One end of the first power board and the second power board are located in the first area, and the other end is located in the second area, the first power board and the second power board are arranged in a back-to-back manner, and the first power board is spaced apart from the second power board; A plurality of the first inverter inductors and a plurality of the second inverter inductors are located in the edge area, a plurality of the first inverter inductors are located on a side of the first power board, a plurality of the second inverter inductors are located on a side of the second power board, and the first inverter inductors and the second inverter inductors are arranged in opposite directions to each other; The double-sided heat dissipation liquid cooling plate is located between the first power board and the second power board, and between the first inverter inductor and the second inverter inductor.

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