Liquid cooling device and electric transmission assembly

Abstract

The utility model discloses a liquid cooling device and an electric transmission assembly. The liquid cooling device comprises a heat conduction part which is used for being in thermal contact with an electric transmission part; and the liquid cooling pipe is arranged in the heat conduction part, and the heat conduction part is suitable for transmitting heat of the electric transmission part to cooling liquid in the liquid cooling pipe so as to cool the electric transmission part. According to the embodiment of the utility model, the liquid cooling device is simple in structure and low in cost, and can effectively cool the electric transmission piece.

Description

Technical Field

[0001] This utility model relates to a liquid cooling device and an electrical transmission component including the liquid cooling device. Background Technology

[0002] With the rapid development of the new energy vehicle industry, the requirements for battery management systems and charging systems are becoming increasingly stringent. Especially in high-current, high-power applications, traditional heat dissipation methods are no longer sufficient. Therefore, liquid-cooled metal busbars, as a highly efficient heat dissipation solution, are gradually being applied in new energy vehicles. In existing technologies, cooling channels are typically designed inside the liquid-cooled metal busbar to circulate coolant and remove the heat generated by the battery. However, this type of liquid-cooled metal busbar is not only costly but also cannot be bent easily, as bending would damage the cooling channels. Utility Model Content

[0003] The purpose of this utility model is to solve at least one aspect of the aforementioned problems and defects existing in the prior art.

[0004] According to one aspect of the present invention, a liquid cooling device is provided, the liquid cooling device comprising: a heat-conducting element for thermal contact with an electrical transmission element; and a liquid cooling pipe disposed in the heat-conducting element, the heat-conducting element being adapted to transfer heat from the electrical transmission element to a coolant within the liquid cooling pipe for cooling the electrical transmission element.

[0005] According to an exemplary embodiment of the present invention, the heat-conducting element has a top contact surface and a bottom contact surface opposite each other in its thickness direction, the top contact surface and the bottom contact surface being adapted to abut against the outer surfaces of two electrical transmission elements respectively for thermal contact with the two electrical transmission elements.

[0006] According to another exemplary embodiment of the present invention, a top groove and a bottom groove suitable for mounting and positioning the electrical transmission component are formed at the top and bottom of the heat-conducting component, respectively. The top groove and the bottom groove extend along the longitudinal direction of the heat-conducting component, and the inner surfaces of the top groove and the bottom groove respectively constitute the top contact surface and the bottom contact surface.

[0007] According to another exemplary embodiment of the present invention, the heat-conducting component is an integrally molded component.

[0008] According to another exemplary embodiment of the present invention, the heat-conducting element has two sides opposite each other in its transverse direction, and side grooves suitable for mounting and positioning the liquid cooling pipes are formed on both sides of the heat-conducting element, the side grooves extending longitudinally along the heat-conducting element; and the liquid cooling device includes two liquid cooling pipes, the two liquid cooling pipes being respectively mounted in the side grooves on both sides of the heat-conducting element and in thermal contact with the inner surface of the side grooves.

[0009] According to another exemplary embodiment of the present invention, the liquid cooling tube is inserted into the side groove via the inlet of the side groove, and the inlet of the side groove is flared outward to guide the liquid cooling tube into the side groove.

[0010] According to another exemplary embodiment of the present invention, the heat-conducting component includes a plurality of heat-conducting blocks assembled together, and at least one liquid cooling pipe is disposed in each heat-conducting block.

[0011] According to another exemplary embodiment of the present invention, the heat-conducting component includes a plurality of heat-conducting blocks arranged side by side in its transverse direction, and side grooves suitable for installing and positioning the liquid cooling pipe are formed on opposite transverse sides of each heat-conducting block; the side grooves extend longitudinally along the heat-conducting component, and the liquid cooling pipe is installed in the side grooves on both sides of each heat-conducting block, with the outer surface of the liquid cooling pipe in thermal contact with the inner surface of the side groove.

[0012] According to another exemplary embodiment of the present invention, the liquid cooling tube is inserted into the side groove via the inlet of the side groove, and the inlet of the side groove is flared outward to guide the liquid cooling tube into the side groove.

[0013] According to another exemplary embodiment of the present invention, the heat-conducting element includes a left heat-conducting block and a right heat-conducting block arranged side by side in its lateral direction. The left heat-conducting block and the right heat-conducting block are identical, so that the left heat-conducting block and the right heat-conducting block can be used interchangeably.

[0014] According to another exemplary embodiment of the present invention, the heat-conducting element includes an upper heat-conducting block and a lower heat-conducting block stacked together in their thickness direction. A plurality of upper grooves are formed on the bottom of the upper heat-conducting block, the plurality of upper grooves extending longitudinally along the heat-conducting element and spaced apart in the transverse direction of the heat-conducting element; a plurality of lower grooves corresponding to the plurality of upper grooves are formed on the top of the lower heat-conducting block, the plurality of lower grooves extending longitudinally along the heat-conducting element and spaced apart in the transverse direction of the heat-conducting element; the plurality of upper grooves and the plurality of lower grooves are combined to form a plurality of receiving grooves, and the liquid cooling device includes a plurality of liquid cooling pipes respectively installed in the plurality of receiving grooves, the outer surface of the liquid cooling pipes being in thermal contact with the inner surface of the receiving grooves.

[0015] According to another exemplary embodiment of the present invention, the upper heat-conducting block and the lower heat-conducting block are completely identical, so that the upper heat-conducting block and the lower heat-conducting block can be used interchangeably.

[0016] According to another exemplary embodiment of the present invention, the liquid cooling pipe has a circular cross-section, and the upper groove and the lower groove have semi-circular cross-sections.

[0017] According to another exemplary embodiment of the present invention, the heat-conducting block is a one-piece molded part.

[0018] According to another exemplary embodiment of the present invention, the heat-conducting element is an elastic heat-conducting element made of an elastic heat-conducting material.

[0019] According to another aspect of the present invention, an electrical transmission assembly is provided, the electrical transmission assembly comprising: an electrical transmission element for transmitting electrical power; and the aforementioned liquid cooling device, wherein a heat-conducting element is in thermal contact with the electrical transmission element.

[0020] According to an exemplary embodiment of the present invention, the electrical transmission assembly includes two electrical transmission elements, which are respectively installed in the top groove and the bottom groove of the heat-conducting element and respectively in thermal contact with the inner surfaces of the top groove and the bottom groove.

[0021] According to another exemplary embodiment of the present invention, the electrical transmission component is flat, having a flat top surface and a flat bottom surface opposite each other in its thickness direction and two arcuate side surfaces opposite each other in its transverse direction; the inner surface of the top groove of the heat conduction component abuts against the flat bottom surface and two arcuate side surfaces of one electrical transmission component, and the inner surface of the bottom groove of the heat conduction component abuts against the flat top surface and two arcuate side surfaces of another electrical transmission component.

[0022] According to another exemplary embodiment of the present invention, the electrical transmission element includes a metal busbar and an outer insulating layer enclosing the metal busbar.

[0023] According to another exemplary embodiment of the present invention, the metal busbar is an aluminum busbar, a copper busbar, an aluminum alloy busbar, or a copper alloy busbar.

[0024] According to another exemplary embodiment of the present invention, the electrical transmission component further includes an outer covering layer, in which the liquid cooling device and the electrical transmission element are enclosed.

[0025] According to another exemplary embodiment of the present invention, the outer covering layer is an electromagnetic shielding layer.

[0026] According to another exemplary embodiment of the present invention, the electromagnetic shielding layer is a metal sleeve, a metal foil, or a metal braided tube.

[0027] According to another exemplary embodiment of the present invention, the outer covering layer is a non-thermally insulating layer or a thermally insulating layer.

[0028] According to another exemplary embodiment of the present invention, the electrical insulation layer is an injection-molded layer onto the liquid cooling device and the electrical transmission component, or tape wrapped around the liquid cooling device and the electrical transmission component, or heat-shrinkable tubing heat-shrinkable onto the liquid cooling device and the electrical transmission component.

[0029] In the foregoing exemplary embodiments of the present invention, the liquid cooling device has a simple structure, low cost, and can effectively cool electrical transmission components.

[0030] Other objects and advantages of the present invention will become apparent from the following description of the invention with reference to the accompanying drawings, and will help to provide a comprehensive understanding of the invention. Attached Figure Description

[0031] Figure 1 This diagram shows a perspective view of an electrical transmission component according to an exemplary first embodiment of the present invention.

[0032] Figure 2 This diagram shows an exploded view of an electrical transmission component according to an exemplary first embodiment of the present invention.

[0033] Figure 3 A perspective view of an electrical transmission component according to an exemplary first embodiment of the present invention is shown, wherein an outer covering layer is shown;

[0034] Figure 4 A perspective view of an electrical transmission component according to an exemplary second embodiment of the present invention is shown;

[0035] Figure 5This diagram shows an exploded view of an electrical transmission component according to an exemplary second embodiment of the present invention.

[0036] Figure 6 A perspective view of an electrical transmission component according to an exemplary second embodiment of the present invention is shown, wherein an outer covering layer is shown;

[0037] Figure 7 A perspective view of an electrical transmission component according to an exemplary third embodiment of the present invention is shown;

[0038] Figure 8 This diagram shows an exploded view of an electrical transmission component according to an exemplary third embodiment of the present invention.

[0039] Figure 9 This diagram shows an exploded view of a liquid cooling device according to an exemplary third embodiment of the present invention;

[0040] Figure 10 A perspective view of an electrical transmission component according to an exemplary third embodiment of the present invention is shown, wherein an outer covering layer is shown. Detailed Implementation

[0041] The technical solution of this utility model will be further described in detail below through embodiments and in conjunction with the accompanying drawings. In this specification, the same or similar reference numerals indicate the same or similar components. The following description of the embodiments of this utility model with reference to the accompanying drawings is intended to explain the overall inventive concept of this utility model and should not be construed as a limitation thereof.

[0042] Furthermore, in the following detailed description, numerous specific details are set forth for ease of explanation to provide a thorough understanding of the embodiments disclosed herein. However, it will be apparent that one or more embodiments may be practiced without these specific details. In other instances, well-known structures and apparatuses are illustrated to simplify the figures.

[0043] According to a general technical concept of the present invention, a liquid cooling device is provided, the liquid cooling device comprising: a heat-conducting element for thermal contact with an electrical transmission element; and a liquid cooling pipe disposed in the heat-conducting element, the heat-conducting element being adapted to transfer the heat of the electrical transmission element to the coolant in the liquid cooling pipe for cooling the electrical transmission element.

[0044] According to another general technical concept of the present invention, an electrical transmission component is provided, the electrical transmission component comprising: an electrical transmission element for transmitting power; and the aforementioned liquid cooling device, wherein a heat-conducting element is in thermal contact with the electrical transmission element.

[0045] Figures 1 to 3This illustrates a first embodiment according to the present invention. Figure 1 This diagram shows a perspective view of an electrical transmission component according to an exemplary first embodiment of the present invention. Figure 2 This diagram shows an exploded view of an electrical transmission component according to an exemplary first embodiment of the present invention. Figure 3 A perspective view of an electrical transmission component according to an exemplary first embodiment of the present invention is shown, wherein an outer covering layer 3 is shown.

[0046] like Figures 1 to 3 As shown, in an exemplary embodiment of this utility model, a liquid cooling device 1 is disclosed. The liquid cooling device 1 includes a heat-conducting element 10 and a liquid cooling pipe 14. The heat-conducting element 10 is used for thermal contact with an electrical transmission element 2. The liquid cooling pipe 14 is disposed within the heat-conducting element 10. The heat-conducting element 10 is adapted to transfer heat from the electrical transmission element 2 to the coolant within the liquid cooling pipe 14, thereby cooling the electrical transmission element 2.

[0047] like Figures 1 to 3 As shown, in the first embodiment illustrated, the heat-conducting element 10 has a top contact surface 11a and a bottom contact surface 12a opposite each other in its thickness direction Z. The top contact surface 11a and the bottom contact surface 12a are adapted to abut against the outer surfaces of the two electrical transmission elements 2 respectively, so as to make thermal contact with the two electrical transmission elements 2.

[0048] like Figures 1 to 3 As shown, in the first embodiment illustrated, a top groove 11 and a bottom groove 12 suitable for mounting and positioning the electrical transmission element 2 are formed on the top and bottom of the heat-conducting element 10, respectively. The top groove 11 and the bottom groove 12 extend along the longitudinal direction Y of the heat-conducting element 10, and the inner surfaces of the top groove 11 and the bottom groove 12 respectively form a top contact surface 11a and a bottom contact surface 12a.

[0049] like Figures 1 to 3 As shown, in the first embodiment illustrated, the heat-conducting element 10 is a one-piece molded part. The heat-conducting element 10 has two opposing sides in its transverse direction X, and side grooves 13 suitable for mounting and positioning liquid cooling pipes 14 are formed on each side of the heat-conducting element 10. The side grooves 13 extend along the longitudinal direction Y of the heat-conducting element 10. The liquid cooling device includes two liquid cooling pipes 14, which are respectively mounted in the side grooves 13 on both sides of the heat-conducting element 10 and are in thermal contact with the inner surface of the side grooves 13.

[0050] like Figures 1 to 3 As shown, in the first embodiment illustrated, the liquid cooling tube 14 is inserted into the side groove 13 via the inlet 13a of the side groove 13, and the inlet 13a of the side groove 13 is flared outward to guide the liquid cooling tube 14 into the side groove 13.

[0051] Figures 4 to 6 This illustrates a second embodiment according to the present invention. Figure 4 A perspective view of an electrical transmission component according to an exemplary second embodiment of the present invention is shown; Figure 5 This diagram shows an exploded view of an electrical transmission component according to an exemplary second embodiment of the present invention. Figure 6 A perspective view of an electrical transmission component according to an exemplary second embodiment of the present invention is shown, wherein an outer covering layer 3 is shown.

[0052] Figures 4 to 6 The second embodiment shown is similar to Figures 1 to 3 The only difference in the first embodiment shown is the structure of the heat-conducting element 10. Figures 4 to 6 In the second embodiment shown, the heat-conducting component 10 includes a plurality of heat-conducting blocks 100 assembled together, and at least one liquid cooling pipe 14 is disposed in each heat-conducting block 100. The heat-conducting block 100 can be a one-piece molded component.

[0053] like Figures 4 to 6 As shown in the second embodiment illustrated, the heat-conducting element 10 includes a plurality of heat-conducting blocks 100 arranged side by side in its transverse X direction. Side grooves 13 suitable for mounting and positioning liquid cooling pipes 14 are formed on opposite sides of each heat-conducting block 100 in the transverse X direction. The side grooves 13 extend along the longitudinal Y direction of the heat-conducting element 10. Liquid cooling pipes 14 are mounted in the side grooves 13 on both sides of each heat-conducting block 100, and the outer surface of the liquid cooling pipes 14 is in thermal contact with the inner surface of the side grooves 13.

[0054] like Figures 4 to 6 As shown, in the second embodiment illustrated, the liquid cooling tube 14 is inserted into the side groove 13 via the inlet 13a of the side groove 13, and the inlet 13a of the side groove 13 is flared outward to guide the liquid cooling tube 14 into the side groove 13.

[0055] like Figures 4 to 6 As shown, in the second embodiment illustrated, the heat-conducting element 10 includes a left heat-conducting block 110 and a right heat-conducting block 120 arranged side by side in its transverse X direction. The left heat-conducting block 110 and the right heat-conducting block 120 are identical, so that the left heat-conducting block 110 and the right heat-conducting block 120 can be used interchangeably.

[0056] like Figures 4 to 6 As shown in the second embodiment, the left heat-conducting block 110 and the right heat-conducting block 120 are integrally formed parts.

[0057] Figures 7 to 10 This illustrates a third embodiment according to the present invention. Wherein, Figure 7 A perspective view of an electrical transmission component according to an exemplary third embodiment of the present invention is shown; Figure 8 This diagram shows an exploded view of an electrical transmission component according to an exemplary third embodiment of the present invention. Figure 9 This diagram shows an exploded view of a liquid cooling device 1 according to an exemplary third embodiment of the present invention; Figure 10 A perspective view of an electrical transmission component according to an exemplary third embodiment of the present invention is shown, wherein an outer covering layer is shown.

[0058] Figures 7 to 10 The third embodiment shown is the same as Figures 1 to 3 The only difference in the first embodiment shown is the structure of the heat-conducting element 10. Figures 7 to 10 In the third embodiment shown, the heat-conducting component 10 includes a plurality of heat-conducting blocks 100 assembled together, and at least one liquid cooling pipe 14 is disposed in each heat-conducting block 100. Each heat-conducting block 100 may be a one-piece molded component.

[0059] like Figures 7 to 10 As shown in the third embodiment illustrated, the heat-conducting element 10 includes an upper heat-conducting block 130 and a lower heat-conducting block 140 stacked together in its thickness direction Z. A plurality of upper grooves 150a are formed on the bottom of the upper heat-conducting block 130, extending along the longitudinal direction Y of the heat-conducting element 10 and spaced apart in the transverse direction X of the heat-conducting element 10. A plurality of lower grooves 150b, corresponding to the plurality of upper grooves 150a respectively, are formed on the top of the lower heat-conducting block 140, extending along the longitudinal direction Y of the heat-conducting element 10 and spaced apart in the transverse direction X of the heat-conducting element 10. The plurality of upper grooves 150a and the plurality of lower grooves 150b are combined to form a plurality of receiving grooves 150. The liquid cooling device includes a plurality of liquid cooling pipes 14 respectively installed in the plurality of receiving grooves 150, with the outer surface of the liquid cooling pipes 14 in thermal contact with the inner surface of the receiving grooves 150.

[0060] like Figures 7 to 10 As shown, in the third embodiment illustrated, the upper heat-conducting block 130 and the lower heat-conducting block 140 are identical, allowing them to be used interchangeably.

[0061] like Figures 7 to 10 As shown, in the third embodiment illustrated, the liquid cooling pipe 14 has a circular cross-section, and the upper groove 150a and the lower groove 150b have semi-circular cross-sections.

[0062] like Figures 7 to 10 As shown, in the third embodiment illustrated, the upper heat-conducting block 130 and the lower heat-conducting block 140 are integrally formed parts.

[0063] like Figures 1 to 10 As shown in the illustrated embodiment, the heat-conducting element 10 can be an elastic heat-conducting element 10 made of an elastic heat-conducting material.

[0064] like Figures 1 to 10 As shown, in another exemplary embodiment of this utility model, an electrical transmission assembly is also disclosed. This electrical transmission assembly includes an electrical transmission element 2 and the aforementioned liquid cooling device 1. The electrical transmission element 2 is used to transmit electrical power, for example, to transmit a large current. The heat-conducting element 10 of the liquid cooling device 1 is in thermal contact with the electrical transmission element 2. The heat from the electrical transmission element 2 is transferred via the heat-conducting element 10 to the coolant within the liquid cooling pipe 14, thereby enabling rapid and effective cooling of the electrical transmission element 2.

[0065] like Figures 1 to 10 As shown in the illustrated embodiment, the electrical transmission assembly includes two electrical transmission elements 2, which are respectively installed in the top groove 11 and the bottom groove 12 of the heat-conducting element 10 and are in thermal contact with the inner surfaces of the top groove 11 and the bottom groove 12, respectively.

[0066] like Figures 1 to 10 As shown in the illustrated embodiment, the electrical transmission element 2 is flat, having a flat top surface and a flat bottom surface opposite each other in its thickness direction Z, and two arcuate side surfaces opposite each other in its transverse direction X. The inner surface of the top groove 11 of the heat conductor 10 abuts against the flat bottom surface and two arcuate side surfaces of one electrical transmission element 2, and the inner surface of the bottom groove 12 of the heat conductor 10 abuts against the flat top surface and two arcuate side surfaces of the other electrical transmission element 2.

[0067] like Figures 1 to 10 As shown in the illustrated embodiment, the electrical transmission component 2 includes a metal busbar 20 and an outer insulating layer 21 that surrounds the metal busbar 20. The metal busbar 20 can be an aluminum busbar, a copper busbar, an aluminum alloy busbar, or a copper alloy busbar.

[0068] like Figures 1 to 10 As shown in the illustrated embodiment, the electrical transmission component further includes an outer covering layer 3. The liquid cooling device and the electrical transmission element 2 are enclosed within the outer covering layer 3.

[0069] like Figures 1 to 10 As shown, in an exemplary embodiment of this utility model, the aforementioned outer covering layer 3 can be an electromagnetic shielding layer. For example, the electromagnetic shielding layer can be a metal sleeve, a metal foil, or a metal braided tube.

[0070] like Figures 1 to 10 As shown, in one exemplary embodiment of this utility model, the outer covering layer 3 can be a non-thermally conductive electrical insulating layer or a thermally conductive electrical insulating layer. For example, the electrical insulating layer can be an injection-molded layer onto the liquid cooling device and the electrical transmission component 2, tape wrapped around the liquid cooling device and the electrical transmission component 2, or heat-shrinkable tubing heat-shrinkable onto the liquid cooling device and the electrical transmission component 2.

[0071] like Figures 1 to 10As shown in the illustrated embodiment, the design cleverly embeds a heat-conducting element 10 and a liquid-cooling pipe 14 between the upper and lower electrical transmission components 2. Under the action of the water pump, the coolant continuously circulates in the liquid-cooling pipe 14. The heat-conducting element 10 adheres to the electrical transmission component 2, absorbing the heat generated on it. When the coolant flows through the heat-conducting element 10, the heat is carried away by the coolant through a heat exchange process. In this way, the heat on the electrical transmission component 2 is effectively transferred and dissipated, significantly reducing its temperature and ensuring the normal operation and stability of the electrical equipment. In the illustrated embodiment, the liquid-cooling circuit mainly consists of the heat-conducting element 10 and single / multi-channel liquid-cooling pipes 14. The heat-conducting element 10 provides support and thermal conductivity, tightly adhering to the electrical transmission component 2 and the liquid-cooling pipe 14, reducing thermal resistance and improving heat dissipation efficiency.

[0072] like Figures 1 to 10 As shown in the illustrated embodiment, a single / multi-channel liquid cooling pipe 14 is responsible for delivering coolant to the area requiring heat dissipation. A single-channel liquid cooling pipe 14 is suitable for applications with lower heat dissipation requirements, while a multi-channel liquid cooling pipe 14 provides a larger heat dissipation area and higher heat dissipation efficiency, making it suitable for applications with higher heat dissipation requirements.

[0073] like Figures 1 to 10 As shown in the illustrated embodiment, the material of the aforementioned outer covering layer 3 is not limited to a metal shielding layer, metal foil, plastic insulating layer, braided tubing, tape, heat shrink tubing, etc. The metal shielding layer provides good electromagnetic shielding while also possessing certain thermal conductivity. The metal foil has excellent thermal conductivity and electromagnetic shielding properties. The insulating layer has excellent thermal conductivity and electromagnetic shielding properties. The braided tubing has a certain degree of elasticity and abrasion resistance, protecting the liquid-cooled metal busbar from external mechanical damage. The tape is easy to use and fix, providing temporary or permanent protection. The heat shrink tubing, when heated and shrunk, tightly adheres to the liquid-cooled metal busbar, providing good sealing and insulation properties.

[0074] like Figures 1 to 10 As shown in the illustrated embodiment, the present invention has at least the following advantages:

[0075] High-efficiency heat dissipation: Liquid cooling technology has higher heat dissipation efficiency than traditional air cooling, and can cope with higher power density and more complex heat dissipation requirements.

[0076] Space saving: By embedding the liquid cooling device 1 between the electrical transmission components 2, space can be saved, making the entire heat dissipation system more compact and lightweight.

[0077] High reliability: Liquid cooling systems offer higher reliability and stability, extending equipment lifespan and reducing maintenance costs.

[0078] Low cost: low replacement cost, low coolant cost, can utilize existing cooling systems, simple maintenance, modular design.

[0079] Easy to process electrical transmission components: It does not affect the automatic bending process of electrical transmission components and is easy to apply to the bending parts of electrical transmission components.

[0080] Those skilled in the art will understand that the embodiments described above are exemplary and can be improved upon. The structures described in the various embodiments can be freely combined without causing structural or principle conflicts, and these changes should fall within the protection scope of this utility model.

[0081] Although the present invention has been described in conjunction with the accompanying drawings, the embodiments disclosed in the drawings are intended to illustrate preferred embodiments of the present invention and should not be construed as a limitation thereof.

[0082] While some embodiments of the general concept of this utility model have been shown and described, those skilled in the art will understand that changes may be made to these embodiments without departing from the principles and spirit of the general concept of this utility model, the scope of which is defined by the claims and their equivalents.

[0083] It should be noted that the word "comprising" does not exclude other elements or steps, and the words "a" or "an" do not exclude multiple elements. Furthermore, any reference numerals in the claims should not be construed as limiting the scope of this invention.

Claims

1. A liquid cooling device, characterized by, Comprising: a heat conducting member (10) for being in thermal contact with an electric transmission member (2); and a liquid cooling tube (14) disposed in the heat conducting member (10), the heat conducting member (10) is adapted to transfer heat of the electric transmission member (2) into a cooling liquid in the liquid cooling tube (14) to cool the electric transmission member (2), the heat conducting member (10) has opposite top and bottom contact surfaces (11a, 12a) in its thickness direction (Z), the top and bottom contact surfaces (11a, 12a) are adapted to abut to outer surfaces of two electric transmission members (2) respectively to be in thermal contact with the two electric transmission members (2).

2. The liquid cooling device according to claim 1, characterized in that: top and bottom recesses (11, 12) adapted to mount and position the electric transmission member (2) are formed on the top and bottom of the heat conducting member (10) respectively, the top and bottom recesses (11, 12) extend along the longitudinal direction (Y) of the heat conducting member (10), inner surfaces of the top and bottom recesses (11, 12) constitute the top and bottom contact surfaces (11a, 12a) respectively.

3. The liquid cooling device according to claim 1 or 2, characterized in that: the heat conducting member (10) is a one-piece member.

4. The liquid cooling device according to claim 3, characterized in that: the heat conducting member (10) has opposite sides in its lateral direction (X), side recesses (13) adapted to mount and position the liquid cooling tube (14) are formed on the sides of the heat conducting member (10) respectively, the side recesses (13) extend along the longitudinal direction (Y) of the heat conducting member (10); and the liquid cooling device comprises two liquid cooling tubes (14), the two liquid cooling tubes (14) are mounted in the side recesses (13) on the sides of the heat conducting member (10) respectively and are in thermal contact with inner surfaces of the side recesses (13).

5. The liquid cooling device according to claim 4, characterized in that: the liquid cooling tube (14) is inserted into the side recess (13) via an inlet (13a) of the side recess (13), and the inlet (13a) of the side recess (13) is trumpet-shaped to open outward to guide the liquid cooling tube (14) to be inserted into the side recess (13).

6. The liquid cooling device according to claim 1 or 2, characterized in that: the heat conducting member (10) comprises a plurality of heat conducting blocks (100) combined together, at least one liquid cooling tube (14) is disposed in each heat conducting block (100).

7. The liquid cooling device according to claim 6, characterized in that: the heat conducting member (10) comprises a plurality of heat conducting blocks (100) arranged side by side in its lateral direction (X), side recesses (13) adapted to mount and position the liquid cooling tube (14) are formed on opposite sides of each heat conducting block (100) in its lateral direction (X) respectively. The side recesses (13) extend along the longitudinal direction (Y) of the heat conducting member (10), and the liquid cooling pipes (14) are respectively installed in the side recesses (13) on both sides of each heat conducting block (100), with the outer surface of the liquid cooling pipes (14) in thermal contact with the inner surface of the side recesses (13).

8. The liquid cooling device according to claim 7, characterized in that: The liquid cooling pipes (14) are inserted into the side recesses (13) through the entrances (13a) of the side recesses (13), and the entrances (13a) of the side recesses (13) are trumpet-shaped and open outward to guide the insertion of the liquid cooling pipes (14) into the side recesses (13).

9. The liquid cooling device according to claim 7, characterized in that: The heat conducting member (10) comprises a left heat conducting block (110) and a right heat conducting block (120) arranged side by side in the transverse direction (X) of the heat conducting member (10), and the left heat conducting block (110) and the right heat conducting block (120) are identical so that the left heat conducting block (110) and the right heat conducting block (120) can be used interchangeably.

10. The liquid cooling device according to claim 6, characterized in that: The heat conducting member (10) comprises an upper heat conducting block (130) and a lower heat conducting block (140) stacked together in the thickness direction (Z) of the heat conducting member (10), a plurality of upper recesses (150a) are formed on the bottom of the upper heat conducting block (130), and the plurality of upper recesses (150a) extend along the longitudinal direction (Y) of the heat conducting member (10) and are distributed at intervals in the transverse direction (X) of the heat conducting member (10); a plurality of lower recesses (150b) corresponding to the plurality of upper recesses (150a) respectively are formed on the top of the lower heat conducting block (140), and the plurality of lower recesses (150b) extend along the longitudinal direction (Y) of the heat conducting member (10) and are distributed at intervals in the transverse direction (X) of the heat conducting member (10); The plurality of upper recesses (150a) and the plurality of lower recesses (150b) are combined into a plurality of accommodating grooves (150), and the liquid cooling device comprises a plurality of liquid cooling pipes (14) respectively installed in the plurality of accommodating grooves (150), with the outer surface of the liquid cooling pipes (14) in thermal contact with the inner surface of the accommodating grooves (150).

11. The liquid cooling device according to claim 10, characterized in that: The upper heat conducting block (130) and the lower heat conducting block (140) are identical so that the upper heat conducting block (130) and the lower heat conducting block (140) can be used interchangeably.

12. The liquid cooling device according to claim 10, characterized in that: The cross section of the liquid cooling pipe (14) is circular, and the cross section of the upper recess (150a) and the lower recess (150b) is semicircular.

13. The liquid cooling device of claim 6, wherein: The heat conducting block (100) is an integral molding.

14. The liquid cooling device according to any one of claims 1-13, characterized in that: The heat conducting member (10) is an elastic heat conducting member made of elastic heat conducting material.

15. An electrical transmission assembly characterized in that, comprises: an electric transmission member (2) for transmitting electric power; and ​ The liquid cooling device (1) of any one of claims 1-14, wherein the heat conducting member (10) is in thermal contact with the electrical transmission member (2).

16. The electrical transmission assembly of claim 15, wherein: the electrical transmission assembly comprises two electrical transmission members (2) each mounted in a top recess (11) and a bottom recess (12) of the heat conducting member (10) and in thermal contact with inner surfaces of the top recess (11) and the bottom recess (12), respectively.

17. The electrical transmission assembly of claim 16, wherein: the electrical transmission members (2) are flat, having a flat top surface and a flat bottom surface opposite in a thickness direction (Z) thereof and two arc-shaped side surfaces opposite in a lateral direction (X) thereof; the inner surface of the top recess (11) of the heat conducting member (10) abuts against the flat bottom surface and the two arc-shaped side surfaces of one electrical transmission member (2), and the inner surface of the bottom recess (12) of the heat conducting member (10) abuts against the flat top surface and the two arc-shaped side surfaces of the other electrical transmission member (2).

18. The electrical transmission assembly of claim 17, wherein: the electrical transmission members (2) comprise a metal bar (20) and an outer insulating layer (21) wrapping the metal bar (20).

19. The electrical transmission assembly of claim 18, wherein: the metal bar (20) is an aluminum bar, a copper bar, an aluminum alloy bar, or a copper alloy bar.

20. The electrical transmission assembly of any of claims 15-19, wherein, Further comprising: an outer cladding layer (3) in which the liquid cooling device and the electrical transmission members (2) are wrapped.

21. The electrical transmission assembly of claim 20, wherein: the outer cladding layer (3) is an electromagnetic shielding layer.

22. The electrical transmission assembly of claim 21, wherein: the electromagnetic shielding layer is a metal sleeve, a metal foil, or a metal braided tube.

23. The electrical transmission assembly of claim 20, wherein: the outer cladding layer (3) is an electrically insulating layer that is thermally non-conductive or thermally conductive.

24. The electrical transmission assembly of claim 23, wherein: the electrically insulating layer is an injection molding layer injected onto the liquid cooling device and the electrical transmission members (2), a tape wrapped onto the liquid cooling device and the electrical transmission members (2), or a heat shrink tube heat shrunk onto the liquid cooling device and the electrical transmission members (2).

Images