Heat dissipation device and energy storage equipment

Abstract

The invention belongs to the technical field of heat dissipation of heating elements, and relates to a heat dissipation device and energy storage equipment. The heat dissipation device is used for conducting heat dissipation on a plurality of heating elements, and each heating element is provided with a plurality of heating units. The heat dissipation device comprises a liquid cooling plate and a plurality of heat pipe assemblies, wherein each heat pipe assembly is arranged corresponding to at least one heating element; each heat pipe assembly comprises at least one heat pipe; between the heating element and the heat pipe assembly which correspond to each other, each heat pipe of the heat pipe assembly is in contact with at least one heating unit on the corresponding heating element, and each heating unit is in contact with at least one heat pipe; the liquid cooling plate is provided with a liquid cooling flow channel, parts of all the heat pipes make contact with the liquid cooling flow channel, and the parts, making contact with the liquid cooling flow channel, of all the heat pipes and the projection of all the heating units on the liquid cooling flow channel are located within the edge of the liquid cooling flow channel so that heat generated by the heating elements can be transmitted to the liquid cooling flow channel. The heat dissipation device is good in cooling effect and does not need to occupy too much space.

Description

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application is a divisional application of the Chinese invention patent application with the application date of June 24, 2024, application number 202410816512.9, and invention name “Heat dissipation device and energy storage device”. Technical Field

[0003] The present invention belongs to the technical field of heat dissipation of heating elements, and in particular relates to a heat dissipation device and an energy storage device. Background Art

[0004] At present, the heating elements in the market are all cooled by air cooling. However, on the one hand, the cooling effect of the air cooling method is not good, and on the other hand, when the air cooling structure is applied in a box with limited space, it is difficult to adapt to the box space. Summary of the invention

[0005] The purpose of the embodiments of the present invention is to provide a heat dissipation device, aiming to solve the problem of poor cooling effect in the existing cooling method through air cooling.

[0006] In order to solve the above technical problems, on the one hand, an embodiment of the present invention provides a heat dissipation device for dissipating heat from a plurality of heating elements, each of which is provided with a plurality of heating units, and the heat dissipation device comprises a liquid cooling plate and a plurality of heat pipe assemblies, each of which is provided corresponding to at least one of the heating elements;

[0007] Each of the heat pipe assemblies comprises at least one heat pipe;

[0008] Between the corresponding heating elements and the heat pipe assemblies, each heat pipe of the heat pipe assembly contacts at least one heating unit on the corresponding heating element, and each heating unit contacts at least one heat pipe;

[0009] A liquid cooling channel is provided on the liquid cooling plate, and a portion of each heat pipe is in contact with the liquid cooling channel. The portion of each heat pipe in contact with the liquid cooling channel and the projection of each heating unit on the liquid cooling channel are located within the edge of the liquid cooling channel to transfer the heat generated by the heating element to the liquid cooling channel.

[0010] According to the heat dissipation device of the embodiment of the present invention, the heat pipe is in contact with the heating element and the liquid cooling channel at the same time, so that the heat generated by the heating element is transferred by the heat pipe to the cooling liquid in the liquid cooling channel, and is carried out to the outside of the liquid cooling plate with the flow of the cooling liquid, thereby achieving effective heat dissipation of the heating element. At the same time, the temperature difference between each heating unit can be adjusted within a preset range by adjusting the length and / or width of each heat pipe. Compared with the air cooling method, the cooling effect of the heat dissipation device is good and does not need to occupy too much space.

[0011] Optionally, the liquid cooling channel includes a plurality of main channels and at least one connecting channel, the plurality of main channels are arranged in sequence at intervals, every two adjacent main channels are connected via a connecting channel, and each of the main channels may be correspondingly provided with the heat pipe assembly.

[0012] Optionally, the plurality of heat pipe assemblies include a first heat pipe assembly, a second heat pipe assembly and a third heat pipe assembly arranged corresponding to different main channels;

[0013] The plurality of heating elements include a first heating element, a second heating element and a third heating element;

[0014] The first heat pipe assembly is arranged corresponding to the first heating element, the second heat pipe assembly is arranged corresponding to the second heating element, and the third heat pipe assembly is arranged corresponding to the third heating element.

[0015] Optionally, a plurality of the main channels are sequentially arranged at intervals along a preset direction;

[0016] The plurality of heating units on each heating element are arranged in a single row and multiple columns along the preset direction;

[0017] The plurality of heat pipes of each heat pipe assembly are sequentially spaced apart along the preset direction, and the number of the heat pipes of a single heat pipe assembly is consistent with the number of the heating units on a single heating element;

[0018] Between the heat pipe assemblies and the heating elements corresponding to each other, the plurality of heating units on the heating elements are in one-to-one contact with the plurality of heat pipes of the heat pipe assemblies.

[0019] Optionally, when two heating units are provided on each heating element, each heat pipe assembly includes two heat pipes;

[0020] In the first heat pipe assembly, the length of the heat pipe close to the second heat pipe assembly is greater than the length of the heat pipe far from the second heat pipe assembly;

[0021] In the second heat pipe assembly, the length of the heat pipe close to the third heat pipe assembly is greater than the length of the heat pipe close to the first heat pipe assembly;

[0022] In the third heat pipe assembly, the length of the heat pipe far from the second heat pipe assembly is shorter than the length of the heat pipe close to the second heat pipe assembly.

[0023] Optionally, when three or more heating units are arranged on each of the heating elements, each of the heat pipe assemblies includes three or more heat pipes;

[0024] In the first heat pipe assembly, the length of the heat pipe close to the second heat pipe assembly is greater than the length of the heat pipe farthest from the second heat pipe assembly, and the length of the heat pipe located in the middle is greater than the length of the heat pipe close to the second heat pipe assembly;

[0025] In the second heat pipe assembly, between every two adjacent heat pipes, the length of the heat pipe close to the third heat pipe assembly is not less than the length of the heat pipe close to the first heat pipe assembly;

[0026] In the third heat pipe assembly, between every two adjacent heat pipes, the length of the heat pipe far away from the second heat pipe assembly is shorter than the length of the heat pipe close to the second heat pipe assembly.

[0027] Optionally, the length of the heat pipe of the second heat pipe assembly close to the first heat pipe assembly is not less than the length of the heat pipe of the first heat pipe assembly far from the second heat pipe assembly; the length of the heat pipe of the second heat pipe assembly close to the third heat pipe assembly is greater than the length of the heat pipe of the first heat pipe assembly close to the second heat pipe assembly;

[0028] The length of the heat pipe of the third heat pipe assembly close to the second heat pipe assembly is greater than the length of the heat pipe of the second heat pipe assembly close to the third heat pipe assembly;

[0029] The length of the heat pipe of the third heat pipe assembly far from the second heat pipe assembly is shorter than the length of the heat pipe of the second heat pipe assembly close to the third heat pipe assembly.

[0030] Optionally, each of the heating elements is provided with three heating units, and the three heating units on the same heating element include a first heating unit, a second heating unit and a third heating unit, and the first heating unit, the second heating unit and the third heating unit are sequentially arranged at intervals along the preset direction to be arranged in a single row and multiple columns;

[0031] Each of the heat pipe assemblies is provided with three heat pipes, and the three heat pipes on the same heat pipe assembly include a first heat pipe, a second heat pipe and a third heat pipe, and the first heat pipe, the second heat pipe and the third heat pipe are sequentially spaced along the preset direction;

[0032] Between the heat pipe assembly and the heating element corresponding to each other, the first heating unit contacts the first heat pipe, the second heating unit contacts the second heat pipe, and the third heating unit contacts the third heat pipe;

[0033] In the first heat pipe assembly, the length of the third heat pipe is greater than the length of the first heat pipe, and the length of the second heat pipe is greater than the length of the third heat pipe;

[0034] In the second heat pipe assembly, the length of the second heat pipe is not less than the length of the first heat pipe, and the length of the third heat pipe is greater than the length of the second heat pipe;

[0035] In the third heat pipe assembly, the length of the third heat pipe is smaller than the length of the second heat pipe, and the length of the second heat pipe is smaller than the length of the first heat pipe;

[0036] The length of the first heat pipe of the second heat pipe assembly is not less than the length of the first heat pipe of the first heat pipe assembly; the length of the third heat pipe of the second heat pipe assembly is greater than the length of the third heat pipe of the first heat pipe assembly;

[0037] The length of the first heat pipe of the third heat pipe assembly is greater than the length of the third heat pipe of the second heat pipe assembly;

[0038] The length of the third heat pipe of the third heat pipe assembly is shorter than the length of the third heat pipe of the second heat pipe assembly.

[0039] Optionally, the plurality of heating elements are arranged in multiple rows and columns, the number of the heat pipe assemblies is consistent with the number of the heating elements, and the plurality of heat pipe assemblies are arranged in one-to-one correspondence with the plurality of heating elements;

[0040] Each of the main channels may be provided with a plurality of the heat pipe assemblies correspondingly;

[0041] Among the multiple heat pipe assemblies in the same main channel, the length of the heat pipe of the heat pipe assembly close to the liquid outlet of the liquid cooling channel is not less than the length of the heat pipe of the heat pipe assembly close to the liquid inlet of the liquid cooling channel.

[0042] Optionally, an extension direction of the main channel is consistent with or intersects with an extension direction of the heat pipe.

[0043] Optionally, the plurality of heating elements are arranged in a matrix;

[0044] The number of the heat pipe assemblies is consistent with the number of columns of the heating elements;

[0045] The heating elements in the same column are arranged corresponding to the same heat pipe assembly, and any heat pipe assembly is only arranged corresponding to one column of the heating elements.

[0046] Optionally, the multiple heating units on each of the heating elements are arranged in a matrix; the number of heat pipes in each of the heat pipe assemblies is consistent with the number of columns of the heating units on each of the heating elements;

[0047] Between the corresponding heat pipe assemblies and the heating elements in the same column, the heating units in the same column on the heating elements are in corresponding contact with the same heat pipe of the heat pipe assembly, and any heat pipe is in contact with only one column of the heating units of the heating elements.

[0048] Optionally, the heat pipe is a straight heat pipe, a curved heat pipe or a bent heat pipe.

[0049] On the other hand, an embodiment of the present invention provides an energy storage device, which includes a heating element and the above-mentioned heat dissipation device. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] Figure 1 is a schematic diagram of a heat dissipation device provided in Embodiment 1 of the present invention;

[0051] Figure 2 yes Figure 1 Thermal simulation image of the heat sink;

[0052] Figure 3 yes Figure 1 A thermal simulation image of the heat dissipation device from another angle;

[0053] Figure 4 is a schematic diagram of a heat dissipation device provided in Embodiment 2 of the present invention;

[0054] Figure 5 is a schematic diagram of a heat dissipation device provided in Embodiment 3 of the present invention;

[0055] Figure 6 is a schematic diagram of a heat dissipation device provided in a fourth embodiment of the present invention;

[0056] Figure 7 is a schematic diagram of a heat dissipation device provided in Embodiment 5 of the present invention;

[0057] Figure 8 It is a thermal simulation image of an existing heat sink;

[0058] Fig. 9This is a thermal simulation image of the existing heat dissipation device from another angle.

[0059] The reference numerals in the specification are as follows:

[0060] 1. Liquid cooling plate; 11. Liquid cooling channel; 111. Main channel; 111a. First main channel; 111b. Second main channel; 111c. Third main channel; 111d. Fourth main channel; 112. Connecting channel; 112a. First connecting channel; 112b. Second connecting channel; 112c. Third connecting channel;

[0061] 2. heat pipe assembly; 2a. first heat pipe assembly; 2b. second heat pipe assembly; 2c. third heat pipe assembly; 21. heat pipe; 21a. first heat pipe; 21b. second heat pipe; 21c. third heat pipe;

[0062] 3. Heating element; 3a. first heating element; 3b. second heating element; 3c. third heating element; 31. heating unit; 31a. first heating unit; 31b. second heating unit; 31c. third heating unit. DETAILED DESCRIPTION

[0063] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0064] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0065] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0066] like Figures 1 to 7As shown, the present invention provides an energy storage device, including multiple heating elements 3 and a heat dissipation device for dissipating heat from the multiple heating elements 3, each heating element 3 is provided with multiple heating units 31, the heat dissipation device includes a liquid cooling plate 1 and multiple heat pipe assemblies 2, each of the heat pipe assemblies 2 is arranged corresponding to at least one of the heating elements 3, and each of the heat pipe assemblies 2 includes at least one heat pipe 21.

[0067] Between the corresponding heating elements 3 and the heat pipe assemblies 2 , each heat pipe 21 of the heat pipe assembly 2 is in contact with at least one heating unit 31 on the corresponding heating element 3 , and each heating unit 31 is in contact with at least one heat pipe 21 , so as to ensure that each heating unit 31 can be cooled by the heat pipe 21 .

[0068] The liquid cooling plate 1 is provided with a liquid cooling channel 11 , and each of the heat pipes 21 is at least partially in contact with the liquid cooling channel 11 to transfer the heat generated by the heating element 3 to the liquid cooling channel 11 .

[0069] By adjusting the length and / or width of each of the heat pipes 21 , the temperature difference between each of the heat generating units 31 is made to be within a preset range.

[0070] The heat dissipation device and energy storage device provided by the embodiment of the present invention make the heat pipe 21 contact with the heating element 3 and the liquid cooling channel 11 at the same time, so that the heat generated by the heating element 3 is transferred by the heat pipe 21 to the coolant in the liquid cooling channel 11, and is carried out to the outside of the liquid cooling plate 1 with the flow of the coolant, thereby achieving effective heat dissipation of the heating element 3. At the same time, the temperature difference between each heating unit 31 can be adjusted within a preset range by adjusting the length and / or width of each heat pipe 21. Compared with the air cooling method, the cooling effect of the heat dissipation device is good and does not need to occupy too much space.

[0071] Furthermore, since the temperatures of the heating elements 3 at different positions on the liquid-cooling channel 11 may be different, and the thermal conductivity of the heat pipe 21 is very high, the larger the length and / or width of the heat pipe 21, the better the heat dissipation effect on the heating element 3. In addition, due to the heat exchange between the heat pipe 21 and the coolant in the liquid-cooling channel 11, the larger the length and / or width of the heat pipe 21, the better the cooling effect provided. Therefore, by adjusting the length and / or width of each heat pipe 21, the temperature difference between the same heating unit 31 located on each heating element 3 can be within a preset range, thereby ensuring the uniformity of cooling and the stable operation of each heating element 3.

[0072] When adjusting the length of the heat pipe 21 , the longer the heat pipe 21 is, the more heat the heat pipe 21 can absorb from the corresponding heating unit 31 , and more heat can be transferred to the coolant in the liquid cooling channel 11 , thereby improving the heat conduction efficiency.

[0073] When adjusting the width of the heat pipe 21 , the wider the heat pipe 21 is, the larger the contact area between the heat pipe 21 and the corresponding heating unit 31 is, and the contact area is proportional to the heat conduction efficiency of the heat pipe 21 .

[0074] It should be noted that the length of the heat pipe 21 refers to the length of the heat pipe 21 along the axial direction thereof, and the width of the heat pipe 21 refers to the width of the heat pipe 21 perpendicular to the axial direction thereof.

[0075] Optionally, the energy storage device is an energy storage converter. The heating unit 31 may be a wafer.

[0076] Optionally, the heat pipe 21 is embedded in the liquid cooling plate 1 to contact the liquid cooling channel 11. Specifically, to ensure that the heat pipe 21 can contact the heating element 3 and the liquid cooling channel 11 at the same time, the heat pipe 21 can be partially embedded in the liquid cooling plate 1 to contact the liquid cooling channel 11, and partially exposed in the liquid cooling plate 1 to contact the heating element 3.

[0077] Optionally, the plurality of heating elements 3 are arranged in one-to-one correspondence with the plurality of heat pipe assemblies 2 (in Figure 1 , Figures 4 to 6 In this case, a single heat pipe assembly 2 can dissipate heat and cool a corresponding single heating element 3. Alternatively, a single heat pipe assembly 2 is correspondingly arranged with a plurality of heating elements 3 (in the form of Figure 7 In the embodiment shown in the figure, for example, at this time, the same heat pipe assembly 2 can simultaneously dissipate heat and cool a plurality of the heating elements 3, thereby improving the integration of the heat dissipation device.

[0078] Optionally, the plurality of heating elements 3 are arranged in a matrix. The number of the heat pipe assemblies 2 is consistent with the number of columns of the heating elements 3 .

[0079] The heating elements 3 in the same row are arranged corresponding to the same heat pipe assembly 2, and any heat pipe assembly 2 is only arranged corresponding to one row of the heating elements 3, so that each heating element 3 can be in corresponding contact with the heat pipe assembly 2 to ensure the cooling of each heating element 3.

[0080] Optionally, the plurality of heating units 31 on each heating element 3 are arranged in a matrix. The number of the heat pipes 21 of each heat pipe assembly 2 is consistent with the number of columns of the heating units 31 on each heating element 3 .

[0081] Between the corresponding heat pipe assemblies 2 and the heating elements 3 in the same column, the heating units 31 in the same column on the heating elements 3 are in corresponding contact with the same heat pipe 21 of the heat pipe assembly 2, and any heat pipe 21 is in contact with only one column of the heating units 31 of the heating elements 3, so that each heating unit 31 on each heating element 3 can be in corresponding contact with the heat pipe 21, thereby ensuring the cooling of each heating unit 31.

[0082] Optionally, a plurality of the heat pipe assemblies 2 are arranged in sequence and spaced apart along the flow direction of the liquid cooling channel 11 , and each of the heat pipe assemblies 2 is arranged corresponding to the same number of the heating elements 3 to achieve heat dissipation for each heating element 3 .

[0083] Optionally, the preset range is 0-3°C.

[0084] Optionally, the liquid cooling channel 11 includes a plurality of main channels 111 and at least one connecting channel 112, the plurality of main channels 111 are arranged in sequence at intervals, and every two adjacent main channels 111 are connected by a connecting channel 112, and each of the main channels 111 may be provided with a corresponding heat pipe assembly 2, and the heat pipe 21 of each heat pipe assembly 2 is at least partially in contact with the corresponding main channel 111, thereby ensuring that the heat of each heat pipe 21 can be transferred to the corresponding main channel 111, and then carried out to the outside of the liquid cooling plate 1 along with the flowing liquid in the liquid cooling channel 11.

[0085] Optionally, the extension direction of the main channel 111 is consistent with the extension direction of the heat pipe 21 (in Figure 1 , Figure 4 , Figure 5 , Figure 7 The embodiment shown is taken as an example) or intersected (with Figure 6 Taking the embodiment shown as an example), while forming the heat dissipation device, heat transfer between the heat pipe 21 and the liquid cooling channel 11 is achieved.

[0086] Optionally, the connecting flow channel 112 is a bent structure, which can increase the flow path of the coolant, thereby increasing the cooling effect of the liquid cooling plate 1.

[0087] Optionally, the heat pipe 21 is a straight heat pipe (with Figure 1 , Figure 4 , Figure 7 as an example of the embodiment shown in the figure), a curved heat pipe or a bent heat pipe (with Figure 6 The shape of the heat pipe 21 can be set according to actual needs and is not limited here.

[0088] The heat dissipation device provided by the present invention is described below in conjunction with specific embodiments.

[0089] Embodiment 1

[0090] like Figure 1 As shown, in the first embodiment of the present invention, six heating elements 3 are provided, and the six heating elements 3 are arranged in multiple rows and columns in the form of 2 (rows) * 3 (columns), and may include two first heating elements 3a in the first column, two second heating elements 3b in the second column, and two third heating elements 3c in the third column.

[0091] Three heating units 31 are provided on each heating element 3. The three heating units 31 on the same heating element 3 are arranged in a single row and multiple columns in a 1 (row)*3 (column) manner, and may include two first heating units 31a, two second heating units 31b and one third heating unit 31c.

[0092] The number of the heat pipe assemblies 2 is consistent with the number of the heating elements 3. There are six heat pipe assemblies 2, and the six heat pipe assemblies 2 can be marked as two first heat pipe assemblies 2a, two second heat pipe assemblies 2b and two third heat pipe assemblies 2c. The first heat pipe assembly 2a, the second heat pipe assembly 2b and the third heat pipe assembly 2c are arranged in sequence along the flow direction of the liquid cooling channel 11 (refer to the direction of the arrow in the figure). The plurality of heat pipe assemblies 2 are arranged in a one-to-one correspondence with the plurality of heating elements 3, that is, each heat pipe assembly 2 is arranged in a corresponding manner to one heating element 3. Specifically, the first heat pipe assembly 2a is arranged in a one-to-one correspondence with the first heating element 3a, the second heat pipe assembly 2b is arranged in a one-to-one correspondence with the two second heating elements 3b, and the third heat pipe assembly 2c is arranged in a one-to-one correspondence with the two third heating elements 3c.

[0093] Each of the heat pipe assemblies 2 includes three heat pipes 21 , which can be respectively labeled as a first heat pipe 21 a , a second heat pipe 21 b , and a third heat pipe 21 c .

[0094] The first heat pipe 21a of the first heat pipe assembly 2a contacts the first heating unit 31a corresponding to the first heating element 3a, the second heat pipe 21b of the first heat pipe assembly 2a contacts the second heating unit 31b corresponding to the first heating element 3a, and the third heat pipe 21c of the first heat pipe assembly 2a contacts the third heating unit 31c corresponding to the first heating element 3a.

[0095] The first heat pipe 21a of the second heat pipe assembly 2b contacts the first heating unit 31a corresponding to the second heating element 3b, the second heat pipe 21b of the second heat pipe assembly 2b contacts the second heating unit 31b corresponding to the second heating element 3b, and the third heat pipe 21c of the second heat pipe assembly 2b contacts the third heating unit 31c corresponding to the second heating element 3b.

[0096] The first heat pipe 21a of the third heat pipe assembly 2c contacts the first heating unit 31a corresponding to the third heating element 3c, the second heat pipe 21b of the third heat pipe assembly 2c contacts the second heating unit 31b corresponding to the third heating element 3c, and the third heat pipe 21c of the third heat pipe assembly 2c contacts the third heating unit 31c corresponding to the third heating element 3c.

[0097] It should be noted that although Figure 1 The heating elements include a first heating element 3a, a second heating element 3b, and a third heating element 3c, but this is only for illustration and does not constitute a limitation on the number of heating elements in the energy storage device provided by the present invention.

[0098] like Figure 1 As shown, in the first embodiment, the liquid cooling channel 11 includes four main channels 111 and three connecting channels 112. The four main channels 111 can be marked as a first main channel 111a, a second main channel 111b, a third main channel 111c and a fourth main channel 111d. The three connecting channels 112 are respectively a first connecting channel 112a, a second connecting channel 112b and a third connecting channel 112c.

[0099] The first main channel 111a, the second main channel 111b, the third main channel 111c and the fourth main channel 111d are arranged in a predetermined direction in sequence and in parallel with each other, and the three heating units 31 on each heating element 3 are also arranged in the predetermined direction. The first main channel 111a is connected to the second main channel 111b through the first connecting channel 112a, the second main channel 111b is connected to the third main channel 111c through the second connecting channel 112b, and the third main channel 111c is connected to the fourth main channel 111d through the third connecting channel 112c. The first main channel 111a is used for liquid inlet, and the fourth main channel 111d is used for liquid outlet, so as to form the liquid cooling channel 11.

[0100] The two first heat pipe assemblies 2a are correspondingly arranged at the first main channel 111a, the two second heat pipe assemblies 2b are correspondingly arranged at the second main channel 111b, and the two third heat pipe assemblies 2c are correspondingly arranged at the third main channel 111c, so as to ensure that the heat of each heat pipe 21 can be transferred to the corresponding main channel 111, and then carried out to the outside of the liquid cooling plate 1 along with the flowing liquid in the liquid cooling channel 11.

[0101] like Figure 1 As shown, in embodiment 1, the heat pipe 21 is a straight pipe, the extension direction of the main channel 111 is consistent with the extension direction of the heat pipe 21, and each of the heat pipes 21 is in contact with the liquid cooling channel 11 as a whole to achieve heat transfer between the heat pipe 21 and the liquid cooling channel 11.

[0102] like Figure 1 As shown, in the first embodiment, the heat pipe assembly 2 and the main channel 111 are arranged in a "two-to-one" manner, that is, two heat pipe assemblies 2 are arranged on each main channel 111. The heat pipe assembly 2 and the heating element 3 are arranged in a one-to-one correspondence manner, that is, each heat pipe assembly 2 corresponds to one heating element 3. Each heat pipe 21 of the heat pipe assembly 2 is arranged in a one-to-one correspondence manner with the heating unit 31 corresponding to the heating element 3, that is, each heat pipe 21 contacts with one heating unit 31.

[0103] By adjusting the length of each heat pipe 21 , the temperature difference between each heating unit 31 is made to be within a preset range.

[0104] like Figure 1 As shown, in the first embodiment, in the first heat pipe assembly 2a, the length of the third heat pipe 21c is greater than the length of the first heat pipe 21a, and the length of the second heat pipe 21b is greater than the length of the third heat pipe 21c.

[0105] In the second heat pipe assembly 2b, the length of the second heat pipe 21b is not less than the length of the first heat pipe 21a, and the length of the third heat pipe 21c is greater than the length of the second heat pipe 21b.

[0106] In the third heat pipe assembly 2c, the length of the third heat pipe 21c is shorter than the length of the second heat pipe 21b, and the length of the second heat pipe 21b is shorter than the length of the first heat pipe 21a.

[0107] The length of the first heat pipe 21a of the second heat pipe assembly 2b is not less than the length of the first heat pipe 21a of the first heat pipe 21a assembly. The length of the third heat pipe 21c of the second heat pipe assembly 2b is greater than the length of the third heat pipe 21c of the first heat pipe 21a assembly.

[0108] The length of the first heat pipe 21 a of the third heat pipe assembly 2 c is greater than the length of the third heat pipe 21 c of the second heat pipe assembly 2 b .

[0109] The length of the third heat pipe 21c of the third heat pipe assembly 2c is smaller than the length of the third heat pipe 21c of the second heat pipe assembly 2b.

[0110] By setting the length of each heat pipe 21 , the temperature difference between each heating unit 31 can be within a preset range.

[0111] Furthermore, since the temperature of the coolant near the liquid outlet of the liquid cooling channel 11 in the same main channel 111 is generally greater than the temperature of the coolant near the liquid inlet of the liquid cooling channel 11, the length of the heat pipe 21 of the heat pipe assembly 2 near the liquid outlet of the liquid cooling channel 11 between the multiple heat pipe assemblies 2 in the same main channel 111 can be made not less than the length of the heat pipe 21 of the heat pipe assembly 2 near the liquid inlet of the liquid cooling channel 11, so that the temperature difference between the heating units 31 in the same main channel 111 is within a preset range.

[0112] In the first embodiment, when designing the length of each heat pipe 21, a heat sink that realizes cooling of the heat generating unit 31 only through the liquid cooling plate 1 (i.e., the prior art described below) can be thermally simulated first, and the temperature ratio between each heat generating unit 31 is calculated according to the thermal simulation, and the corresponding heat pipe length is designed according to the ratio. Specifically, the length ratio between each heat pipe 21 can be made consistent with the temperature ratio between the corresponding heat generating units 31 (for example, assuming that the ratio between any three heat generating units 31 is 117:121:122, the length ratio between the three heat pipes 21 corresponding to the three heat generating units 31 can also be 117:121:122), and the initial length of each heat pipe 21 is obtained. After that, a heat sink with heat pipes 21 of each initial length is thermally simulated. If the difference between the temperature at a certain heat generating unit 31 and the temperature of other heat generating units 31 is greater than a preset range, the length of the heat pipe 21 corresponding to the heat generating unit 31 with too high a temperature is correspondingly increased until the temperature difference between each heat generating unit 31 is within the preset range.

[0113] Specifically, Figure 1As shown, in embodiment 1, in the first row of heat pipe assemblies 2, the length of the first heat pipe 21a of the first heat pipe assembly 2a is 130 mm, the length of the second heat pipe 21b of the first heat pipe assembly 2a is 170 mm, and the length of the third heat pipe 21c of the first heat pipe assembly 2a is 150 mm; the length of the first heat pipe 21a of the second heat pipe assembly 2b is 130 mm, the length of the second heat pipe 21b of the second heat pipe assembly 2b is 150 mm, and the length of the third heat pipe 21c of the second heat pipe assembly 2b is 190 mm; the length of the first heat pipe 21a of the third heat pipe assembly 2c is 240 mm, the length of the second heat pipe 21b of the third heat pipe assembly 2c is 170 mm, and the length of the third heat pipe 21c of the third heat pipe assembly 2c is 130 mm.

[0114] In the second row of heat pipe assemblies 2, the length of the first heat pipe 21a of the first heat pipe assembly 2a is 130 mm, the length of the second heat pipe 21b of the first heat pipe assembly 2a is 170 mm, and the length of the third heat pipe 21c of the first heat pipe assembly 2a is 150 mm; the length of the first heat pipe 21a of the second heat pipe assembly 2b is 170 mm, the length of the second heat pipe 21b of the second heat pipe assembly 2b is 170 mm, and the length of the third heat pipe 21c of the second heat pipe assembly 2b is 190 mm; the length of the first heat pipe 21a of the third heat pipe assembly 2c is 240 mm, the length of the second heat pipe 21b of the third heat pipe assembly 2c is 170 mm, and the length of the third heat pipe 21c of the third heat pipe assembly 2c is 100 mm.

[0115] like Figure 2 and Figure 3 As shown, it is a thermal simulation image of the heat dissipation device provided in the first embodiment of the present invention. According to the thermal simulation image of the heat dissipation device provided in the first embodiment of the present invention, it can be seen that:

[0116] In the first row of the heating elements 3 of the heat dissipation device provided in the first embodiment of the present invention, the center temperature of the first heating element 3a away from the liquid cooling plate 1 is 90.20°C, the temperature of the first heating unit 31a of the first heating element 3a is 70.13°C, the temperature of the second heating unit 31b of the first heating element 3a is 71.73°C, and the temperature of the third heating unit 31c of the first heating element 3a is 70.76°C; the center temperature of the second heating element 3b away from the liquid cooling plate 1 is 85.34°C, the temperature of the first heating unit 31a of the second heating element 3b is 70.13°C, the temperature of the second heating unit 31b of the first heating element 3a is 71.73°C, and the temperature of the third heating unit 31c of the first heating element 3a is 70.76°C. The temperature of the first heating unit 31a of the second heating element 31 is 71.34°C, the temperature of the second heating unit 31b of the second heating element 3b is 70.67°C, and the temperature of the third heating unit 31c of the second heating element 3b is 70.03°C; the central temperature of the third heating element 3c away from the liquid cooling plate 1 is 90.68°C, the temperature of the first heating unit 31a of the third heating element 3c is 71.32°C, the temperature of the second heating unit 31b of the third heating element 3c is 71.52°C, and the temperature of the third heating unit 31c of the third heating element 3c is 70.83°C.

[0117] In the second row of the heat dissipation device provided in the first embodiment of the present invention, the center temperature of the first heat-generating element 3a away from the liquid cooling plate 1 is 85.45°C, the temperature of the first heat-generating unit 31a of the first heat-generating element 3a is 69.45°C, the temperature of the second heat-generating unit 31b of the first heat-generating element 3a is 71.25°C, and the temperature of the third heat-generating unit 31c of the first heat-generating element 3a is 71.42°C; the center temperature of the second heat-generating element 3b away from the liquid cooling plate 1 is 87.42°C, the temperature of the first heat-generating unit 31a of the second heat-generating element 3b is 69.45°C, the temperature of the second heat-generating unit 31b of the first heat-generating element 3a is 71.25°C, and the temperature of the third heat-generating unit 31c of the first heat-generating element 3a is 71.42°C. The temperature of the first heating unit 31a of the second heating element 31 is 71.90°C, the temperature of the second heating unit 31b of the second heating element 3b is 72.19°C, and the temperature of the third heating unit 31c of the second heating element 3b is 71.93°C; the central temperature of the third heating element 3c away from the liquid cooling plate 1 is 86.36°C, the temperature of the first heating unit 31a of the third heating element 3c is 70.58°C, the temperature of the second heating unit 31b of the third heating element 3c is 71.06°C, and the temperature of the third heating unit 31c of the third heating element 3c is 70.55°C.

[0118] like Figure 8 and Fig. 9 As shown, it is a thermal simulation image of an existing heat sink, which is cooled only by a liquid cooling plate 1 without a heat pipe. According to the thermal simulation image of the existing heat sink, it can be seen that:

[0119] In the first row of the heating elements of the existing heat dissipation device, from left to right, the center temperature of the first heating element away from the liquid cooling plate 1 is 112.54°C, and the temperatures of the three heating units on the first heating element from left to right (corresponding to the first heating unit 31a, the second heating unit 31b and the third heating unit 3c of the first heating element 3a in Embodiment 1 of the present invention, respectively) are 117.52°C, 122.94°C, and 124.96°C, respectively; the center temperature of the second heating element away from the liquid cooling plate 1 is 109.72°C, and the temperatures of the three heating units on the second heating element from left to right (corresponding to the first heating unit 31a, the second heating unit 31b and the third heating unit 3c of the first heating element 3a in Embodiment 1 of the present invention, respectively) are 117.52°C, 122.94°C, and 124.96°C, respectively. The temperatures of the first heating unit 31a, the second heating unit 31b and the third heating element 3c (corresponding to the first heating unit 31a, the second heating unit 31b and the third heating element 3c of the second heating element 3b in the first embodiment of the present invention) are 120.98°C, 122.00°C and 118.87°C respectively; the central temperature of the third heating element away from the liquid cooling plate 1 is 111.69°C, and the temperatures of the three heating units from left to right on the third heating element (corresponding to the first heating unit 31a, the second heating unit 31b and the third heating element 3c of the third heating element 3c in the first embodiment of the present invention respectively) are 120.70°C, 123.98°C and 117.84°C.

[0120] Among the heating elements 3 in the second row of the existing heat dissipation device, from left to right, the center temperature of the first heating element away from the liquid cooling plate 1 is 109.13°C, and the temperatures of the three heating units on the first heating element from left to right are 114.88°C, 123.80°C, and 129.47°C, respectively; the center temperature of the second heating element away from the liquid cooling plate 1 is 115.10°C, and the temperatures of the three heating units on the second heating element from left to right are 123.78°C, 123.39°C, and 122.16°C, respectively; the center temperature of the third heating element away from the liquid cooling plate 1 is 114.73°C, and the temperatures of the three heating units on the third heating element from left to right are 119.55°C, 123.63°C, and 118.79°C, respectively.

[0121] By comparison, it can be seen that the temperature of each heating element of the existing heat dissipation device is basically between 114.88℃-129.47℃, while the temperature of each heating element 31 of the heat dissipation device provided in the first embodiment of the present invention is basically between 69.45℃-72.19℃. The heat dissipation device provided in the first embodiment of the present invention can effectively reduce the temperature of each heating element 31 and make the temperature difference between each heating unit 31 within 3℃ (i.e., the preset range).

[0122] It should be noted that although the point value (such as 90.20℃) is not displayed on the graph, the above temperature values ​​are directly output by relevant equipment.

[0123] Embodiment 2

[0124] like Figure 4 As shown, in the second embodiment, the arrangement of the liquid-cooling channel 11, the number and arrangement of the heating units 31 on each of the heating elements 3, the number and shape of the heat pipes 21 of each of the heat pipe assemblies 2, the corresponding relationship between each of the heat pipe assemblies 2 and each of the heating elements 3, the corresponding contact relationship between the heat pipes 21 of each of the heat pipe assemblies 2 and the heating units 31 of each of the heating elements 3, and the relationship (parallel) between the extension direction of the main channel 111 and the extension direction of each of the heat pipes 21 are the same as those in the first embodiment and are not repeated here.

[0125] Different from the first embodiment, in the second embodiment, three heating elements 3 are provided, and three heat pipe assemblies 2 are provided. One heat pipe assembly 2 is correspondingly provided in the first main channel 111a, the second main channel 111b, and the third main channel 111c, and the three heating elements 3 correspond to the three heat pipe assemblies 2 one by one.

[0126] Embodiment 3

[0127] like Figure 5 As shown, in the third embodiment, the number and arrangement of the heating elements 3, the number and arrangement of the heating units 31 on each of the heating elements 3, the number of the heat pipe assemblies 2, the number and shape of the heat pipes 21 of each of the heat pipe assemblies 2, the corresponding relationship between each of the heat pipe assemblies 2 and each of the heating elements 3, and the corresponding contact relationship between the heat pipes 21 of each of the heat pipe assemblies 2 and the heating units 31 of each of the heating elements 3 are the same as those in the first embodiment, and are not described again herein.

[0128] Different from the first embodiment, in the third embodiment, the extension direction of the main channel 111 intersects with the extension direction of each heat pipe 21. At this time, part of the heat pipe 21 can partially extend outside the liquid cooling channel 11 and contact the position of the liquid cooling plate 1 where the liquid cooling channel 11 is not provided.

[0129] Embodiment 4

[0130] like Figure 6 As shown, in the fourth embodiment, the number and arrangement of the heating elements 3, the number and arrangement of the heating units 31 on each of the heating elements 3, the number of the heat pipe assemblies 2, the number of the heat pipes 21 of each of the heat pipe assemblies 2, the corresponding relationship between each of the heat pipe assemblies 2 and each of the heating elements 3, the corresponding contact relationship between the heat pipes 21 of each of the heat pipe assemblies 2 and the heating units 31 of each of the heating elements 3, the arrangement of the liquid-cooling flow channel 11, and the relationship (parallel) between the extension direction of the main flow channel 111 and the extension direction of each of the heat pipes 21 are the same as those in the first embodiment and are not repeated here.

[0131] Different from the first embodiment, in the fourth embodiment, the heat pipe 21 is partially a bent pipe, and the heat pipe 21 is partially in contact with the liquid cooling channel 11, and partially extends outside the liquid cooling channel 11 and in contact with a position on the liquid cooling plate 1 where the liquid cooling channel 11 is not provided.

[0132] The extending direction of the portion of the heat pipe 21 in contact with the liquid cooling channel 11 is consistent with the extending direction of the main channel 111 , and the extending direction of the portion of the heat pipe 21 extending outside the liquid cooling channel 11 intersects with the extending direction of the main channel 111 .

[0133] Embodiment 5

[0134] like Figure 7 As shown, in Example 5, the number and arrangement of the heating elements 3, the number and arrangement of the heating units 31 on each of the heating elements 3, the number of heat pipes 21 of each of the heat pipe assemblies 2, the arrangement of the liquid cooling channel 11, and the relationship (parallel) between the extension direction of the main channel 111 and the extension direction of each heat pipe 21 are the same as those in Example 1 and will not be repeated here.

[0135] Different from the first embodiment, in the fifth embodiment, the number of the heat pipe assemblies 2 is consistent with the number of columns of the heating elements 3, and three heat pipe assemblies 2 are provided, and the three heat pipe assemblies 2 are respectively marked as the first heat pipe assembly 2a, the second heat pipe assembly 2b and the third heat pipe assembly 2c. Each of the heat pipe assemblies 2 is provided corresponding to a column of the heating elements 3. Specifically, the first heat pipe assembly 2a is provided corresponding to the two first heating elements 3a in the first column, the second heat pipe assembly 2b is provided corresponding to the two second heating elements 3b in the second column, and the third heat pipe assembly 2c is provided corresponding to the two third heating elements 3c in the third column.

[0136] The first heat pipe 21a of the first heat pipe assembly 2a is in contact with the first heating units 31a of the two first heating elements 3a. Since each of the first heating elements 3a is provided with a first heating unit 31a, and the first heat pipe assembly 2a is provided correspondingly to the two first heating elements 3a, the first heat pipe 21a of the first heat pipe assembly 2a will be in contact with the two first heating units 31a at the same time. That is, the first heat pipe 21a of the first heat pipe assembly 2a is in contact with a total of two first heating units 31a on the two first heating elements 3a at the same time.

[0137] Similarly, the second heat pipe 21b of the first heat pipe assembly 2a is in contact with a total of two second heating units 31b on the two first heating elements 3a at the same time, and the third heat pipe 21c of the first heat pipe assembly 2a is in contact with a total of two third heating units 31c on the two first heating elements 3a at the same time.

[0138] The first heat pipe 21a of the second heat pipe assembly 2b is in contact with a total of two first heating units 31a on the two second heating elements 3b at the same time, the second heat pipe 21b of the second heat pipe assembly 2b is in contact with a total of two second heating units 31b on the two second heating elements 3b at the same time, and the third heat pipe 21c of the second heat pipe assembly 2b is in contact with a total of two third heating units 31c on the two second heating elements 3b at the same time.

[0139] The first heat pipe 21a of the third heat pipe assembly 2c is in contact with a total of two first heating units 31a on the two third heating elements 3c at the same time, the second heat pipe 21b of the third heat pipe assembly 2c is in contact with a total of two second heating units 31b on the two third heating elements 3c at the same time, and the third heat pipe 21c of the third heat pipe assembly 2c is in contact with a total of two third heating units 31c on the two third heating elements 3c at the same time.

[0140] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A heat dissipation device for dissipating heat from a plurality of heating elements, each of the heating elements being provided with a plurality of heating units, characterized in that: The heat dissipation device includes a liquid cooling plate and a plurality of heat pipe assemblies, each of the heat pipe assemblies being arranged corresponding to at least one of the heating elements; Each of the heat pipe assemblies comprises at least one heat pipe; Between the corresponding heating elements and the heat pipe assemblies, each heat pipe of the heat pipe assembly contacts at least one heating unit on the corresponding heating element, and each heating unit contacts at least one heat pipe; A liquid cooling channel is provided on the liquid cooling plate, and a portion of each heat pipe is in contact with the liquid cooling channel. The portion of each heat pipe in contact with the liquid cooling channel and the projection of each heating unit on the liquid cooling channel are located within the edge of the liquid cooling channel to transfer the heat generated by the heating element to the liquid cooling channel.

2. The heat dissipation device according to claim 1, characterized in that: The liquid cooling channel includes a plurality of main channels and at least one connecting channel. The plurality of main channels are arranged in sequence at intervals, and every two adjacent main channels are connected through a connecting channel. Each of the main channels can be correspondingly provided with the heat pipe assembly.

3. The heat dissipation device according to claim 2, characterized in that: The plurality of heat pipe assemblies include a first heat pipe assembly, a second heat pipe assembly and a third heat pipe assembly arranged corresponding to different main channels; The plurality of heating elements include a first heating element, a second heating element and a third heating element; The first heat pipe assembly is arranged corresponding to the first heating element, the second heat pipe assembly is arranged corresponding to the second heating element, and the third heat pipe assembly is arranged corresponding to the third heating element.

4. The heat dissipation device according to claim 3, characterized in that: The plurality of main channels are sequentially arranged at intervals along a preset direction; The plurality of heating units on each heating element are arranged in a single row and multiple columns along the preset direction; The plurality of heat pipes of each heat pipe assembly are sequentially spaced apart along the preset direction, and the number of the heat pipes of a single heat pipe assembly is consistent with the number of the heating units on a single heating element; Between the heat pipe assemblies and the heating elements corresponding to each other, the plurality of heating units on the heating elements are in one-to-one contact with the plurality of heat pipes of the heat pipe assemblies.

5. The heat dissipation device according to claim 4, characterized in that: When two heating units are arranged on each heating element, each heat pipe assembly includes two heat pipes; In the first heat pipe assembly, the length of the heat pipe close to the second heat pipe assembly is greater than the length of the heat pipe far from the second heat pipe assembly; In the second heat pipe assembly, the length of the heat pipe close to the third heat pipe assembly is greater than the length of the heat pipe close to the first heat pipe assembly; In the third heat pipe assembly, the length of the heat pipe far from the second heat pipe assembly is shorter than the length of the heat pipe close to the second heat pipe assembly.

6. The heat dissipation device according to claim 4, characterized in that: When three or more heating units are arranged on each of the heating elements, each of the heat pipe assemblies includes three or more heat pipes; In the first heat pipe assembly, the length of the heat pipe close to the second heat pipe assembly is greater than the length of the heat pipe farthest from the second heat pipe assembly, and the length of the heat pipe located in the middle is greater than the length of the heat pipe close to the second heat pipe assembly; In the second heat pipe assembly, between every two adjacent heat pipes, the length of the heat pipe close to the third heat pipe assembly is not less than the length of the heat pipe close to the first heat pipe assembly; In the third heat pipe assembly, between every two adjacent heat pipes, the length of the heat pipe far away from the second heat pipe assembly is shorter than the length of the heat pipe close to the second heat pipe assembly.

7. The heat dissipation device according to claim 5 or 6, characterized in that: The length of the heat pipe of the second heat pipe assembly close to the first heat pipe assembly is not less than the length of the heat pipe of the first heat pipe assembly far from the second heat pipe assembly; the length of the heat pipe of the second heat pipe assembly close to the third heat pipe assembly is greater than the length of the heat pipe of the first heat pipe assembly close to the second heat pipe assembly; The length of the heat pipe of the third heat pipe assembly close to the second heat pipe assembly is greater than the length of the heat pipe of the second heat pipe assembly close to the third heat pipe assembly; The length of the heat pipe of the third heat pipe assembly far from the second heat pipe assembly is shorter than the length of the heat pipe of the second heat pipe assembly close to the third heat pipe assembly.

8. The heat dissipation device according to claim 7, characterized in that: Each of the heating elements is provided with three heating units, and the three heating units on the same heating element include a first heating unit, a second heating unit and a third heating unit, and the first heating unit, the second heating unit and the third heating unit are sequentially arranged at intervals along the preset direction to form a single-row and multi-column arrangement; Each of the heat pipe assemblies is provided with three heat pipes, and the three heat pipes on the same heat pipe assembly include a first heat pipe, a second heat pipe and a third heat pipe, and the first heat pipe, the second heat pipe and the third heat pipe are sequentially spaced along the preset direction; Between the heat pipe assembly and the heating element corresponding to each other, the first heating unit contacts the first heat pipe, the second heating unit contacts the second heat pipe, and the third heating unit contacts the third heat pipe; In the first heat pipe assembly, the length of the third heat pipe is greater than the length of the first heat pipe, and the length of the second heat pipe is greater than the length of the third heat pipe; In the second heat pipe assembly, the length of the second heat pipe is not less than the length of the first heat pipe, and the length of the third heat pipe is greater than the length of the second heat pipe; In the third heat pipe assembly, the length of the third heat pipe is smaller than the length of the second heat pipe, and the length of the second heat pipe is smaller than the length of the first heat pipe; The length of the first heat pipe of the second heat pipe assembly is not less than the length of the first heat pipe of the first heat pipe assembly; the length of the third heat pipe of the second heat pipe assembly is greater than the length of the third heat pipe of the first heat pipe assembly; The length of the first heat pipe of the third heat pipe assembly is greater than the length of the third heat pipe of the second heat pipe assembly; The length of the third heat pipe of the third heat pipe assembly is shorter than the length of the third heat pipe of the second heat pipe assembly.

9. The heat dissipation device according to claim 2, characterized in that: The plurality of heating elements are arranged in multiple rows and columns, the number of the heat pipe assemblies is consistent with the number of the heating elements, and the plurality of heat pipe assemblies are arranged in one-to-one correspondence with the plurality of heating elements; Each of the main channels may be provided with a plurality of the heat pipe assemblies correspondingly; Among the multiple heat pipe assemblies in the same main channel, the length of the heat pipe of the heat pipe assembly close to the liquid outlet of the liquid cooling channel is not less than the length of the heat pipe of the heat pipe assembly close to the liquid inlet of the liquid cooling channel.

10. An energy storage device, characterized in that: The invention comprises a heating element and a heat dissipation device as claimed in any one of claims 1 to 9.

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