Liquid-cooled conductor structure

Abstract

The utility model discloses a liquid-cooled conductor structure, which comprises an inner conductor, an outer metal tube sleeved on the periphery of the inner conductor and sealing covers arranged at two ends of the outer metal tube, a through cavity is arranged between the inner conductor and the outer metal tube, a shaft hole is formed in the center of each sealing cover, and the inner conductor is sleeved on the outer metal tube. The inner conductor is provided with a cavity, the two sealing covers are arranged in the cavity, the opposite side faces of the two sealing covers are provided with annular grooves, the sealing covers are fixedly arranged on the inner conductor through the shaft holes, the two ends of the outer metal pipe are fixedly arranged in the annular grooves, and the sealing covers are in interference fit with the outer metal pipe and the inner conductor to seal the two ends of the cavity. The outer metal tube is large in heat dissipation surface area, the heat dissipation effect is more remarkable, and the current-carrying capacity of the inner conductor is effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of electrical connection, and more specifically, to a liquid-cooled conductor structure. Background Art

[0002] With the continuous development of the new energy automobile industry, automotive electrical appliances and other control systems are also developing towards refined functions, complex structures, and diversification, making the conductor structure run through the vehicle body. Conductors generate a lot of heat during normal use. When the heat is too high, it is easy to cause the conductor and the surrounding connectors and fixings to fail due to the high temperature, thereby affecting the normal use of various electrical devices in the car, and even causing accidents such as car burns. Utility Model Content

[0003] The utility model aims to provide a liquid-cooled conductor structure, comprising an inner conductor, an outer metal tube sleeved on the outer periphery of the inner conductor, and covers arranged at both ends of the outer metal tube.

[0004] A through cavity is provided between the inner conductor and the outer metal tube.

[0005] An axial hole is provided at the center of the cover, and an annular groove is provided on the opposite sides of the two covers.

[0006] The sealing cover is fixedly arranged on the inner conductor through the axial hole, and the two ends of the outer metal tube are fixedly arranged in the annular groove. The sealing cover is interference fit with the outer metal tube and the inner conductor to seal the two ends of the cavity.

[0007] Optionally, two ends of the inner conductor are connected to terminals, the terminals include a connecting portion and a fixing portion that are connected to each other, the inner conductor is connected to the fixing portion, and the connecting portion is used to connect to a docking electrical device.

[0008] Optionally, the inner conductor is a solid conductor, and the end of the solid conductor is connected to the fixing part by butt joint or overlap welding; or, the inner conductor is a hollow tube, a crimping groove is provided on the outer peripheral surface of the fixing part, the fixing part is extended into the hollow tube and crimped, and the wall of the hollow tube is pressed into the crimping groove and fixed.

[0009] Optionally, the cavity also includes at least two support blocks evenly distributed along the radial circumference, with gaps left between the support blocks for passing coolant. One end of the support block abuts against the outer wall of the inner conductor, and the other end abuts against the inner wall of the outer metal tube. The support blocks on the same radial circumference constitute a support structure.

[0010] Optionally, a first protrusion is provided on one of the outer wall of the inner conductor and the end surface of one end of the support block, and a first groove matching the first protrusion is provided on the other, and the support block and the inner conductor are fixed by clamping the first protrusion and the first groove.

[0011] Optionally, a second protrusion is provided on one of the other end surface of the support block and the inner wall of the outer metal tube, and a second groove matching the second protrusion is provided on the other end surface, and the support block and the outer metal tube are fixed by the second protrusion and the second groove.

[0012] Optionally, there are multiple support structures, and the multiple support structures are arranged at intervals along the extension direction of the inner conductor.

[0013] Optionally, two ends of the outer circumferential surface of the outer metal tube are respectively connected with a liquid inlet pipe and a liquid outlet pipe.

[0014] Optionally, the inner conductor is provided with at least one bending portion, and the outer metal tube is arranged in accordance with the shape.

[0015] Optionally, at least one grounding device is electrically connected to the outer circumferential surface of the outer metal tube.

[0016] The utility model has the following technical effects:

[0017] The two ends of the outer circumference of the outer metal tube are connected to a liquid inlet pipe and a liquid outlet pipe respectively, and the conductor structure of the present invention is connected to a cooling system, and cooling liquid is injected and circulated in the cavity. With the circulation of the cooling liquid, the heat generated by the inner conductor is quickly taken away, and the temperature of the inner conductor is quickly reduced; in addition, the outer metal tube has a large heat dissipation surface area, and the heat dissipation effect is more significant, which effectively improves the current carrying capacity of the inner conductor.

[0018] Other features and advantages of the present invention will become apparent from the following detailed description of exemplary embodiments of the present invention with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the present invention and, together with the description, serve to explain the principles of the present invention.

[0020] Figure 1 This is a schematic diagram of the overall structure of a liquid-cooled conductor of the utility model;

[0021] Figure 2 for Figure 1 A cross-sectional view of

[0022] Figure 3 It is a schematic diagram of a liquid-cooled conductor structure with a terminal structure;

[0023] Figure 4 for Figure 2 Sectional view along line AA;

[0024] Figure 5 for Figure 2 The cross section along line BB;

[0025] Figure 6 A cross-sectional view of the cover.

[0026] The following are marked in the figure:

[0027] 10. Inner conductor; 20. Outer metal tube; 30. Cover; 40. Cavity;

[0028] 210, first outer metal tube; 220, second outer metal tube; 310, axial hole; 320, groove;

[0029] 510, connecting portion; 520, fixing portion;

[0030] 110, crimping groove;

[0031] 60. Support structure; 610. Gap; 620. Support block; 70. Liquid inlet pipe; 80. Grounding device;

[0032] 2. First groove; 3. Second protrusion; 4. Second groove. DETAILED DESCRIPTION

[0033] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that unless otherwise specifically stated, the relative arrangement of components and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present invention.

[0034] The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the present invention, its application, or uses.

[0035] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered part of the specification.

[0036] In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not limiting. Therefore, other examples of the exemplary embodiments may have different values.

[0037] like Figure 1-Figure 6The liquid-cooled conductor structure shown includes an inner conductor 10, an outer metal tube 20 sleeved on the outer periphery of the inner conductor 10, and a cover 30 arranged at both ends of the outer metal tube 20, a through cavity 40 is arranged between the inner conductor 10 and the outer metal tube 20, an axial hole 310 is opened at the center position of the cover 30, and an annular groove 320 is arranged on the opposite sides of the two covers 30, the cover 30 is fixedly arranged on the inner conductor 10 through the axial hole 310, and the two ends of the outer metal tube 20 are fixedly arranged in the annular groove 320, and the cover 30 is interference fit with the outer metal tube 20 and the inner conductor 10 to seal the two ends of the cavity 40.

[0038] In a specific embodiment, the outer metal tube 20 includes a first outer metal tube 210 and a second outer metal tube 220 , which are welded together, and both ends of the outer metal tube 20 cooperate with the cover 30 to be fixed to the outer periphery of the inner conductor 10 .

[0039] In one embodiment, after the outer metal tube 20 is fixed to the outer periphery of the inner conductor 10, thermally conductive silicone is injected into the cavity 40, and after the thermally conductive silicone is cured, the cavity 40 is sealed with a sealing cover 30. The heat generated by the inner conductor 10 is quickly transferred to the outer metal tube 20 through the thermally conductive silicone. The outer metal tube 20 has a large heat dissipation surface area and a significant heat dissipation effect, which significantly improves the current carrying capacity of the inner conductor 10.

[0040] In another embodiment, if Figure 1-Figure 2 As shown, the two ends of the outer circumference of the outer metal tube 20 are respectively connected to the liquid inlet pipe 70 and the liquid outlet pipe. The conductor structure is connected to the cooling system, and the cooling liquid is injected and circulated in the cavity 40. The cooling liquid can be an insulating or non-insulating coolant.

[0041] As the cooling liquid circulates, the heat generated by the inner conductor 10 is quickly taken away, and the temperature of the inner conductor 10 is quickly reduced; in addition, the outer metal tube 20 has a large heat dissipation surface area, and the heat dissipation effect is more significant, which effectively improves the current carrying capacity of the inner conductor 10.

[0042] In addition, an insulating coating is applied to the inner surface of the outer metal tube 20 and the outer surface of the inner conductor 10 to ensure insulation performance.

[0043] In one embodiment, two ends of the inner conductor 10 are connected to terminals, and the terminals include a connecting portion 510 and a fixing portion 520 that are connected to each other. The inner conductor 10 is connected to the fixing portion 520, and the connecting portion 510 is used to connect to a docking electrical device.

[0044] In one embodiment, the inner conductor 10 is a solid conductor, and the end of the solid conductor is connected to the fixing portion 520 by butt joint or lap welding;

[0045] like Figure 3 In another embodiment shown, the inner conductor 10 is a hollow tube, and a crimping groove 110 is provided on the outer peripheral surface of the fixing portion 520. The fixing portion 520 is inserted into the hollow tube and crimped, and the wall of the hollow tube is pressed into the crimping groove 110 and fixed.

[0046] like Figure 2 and Figure 4 As shown, the cavity 40 further includes at least two support blocks 620 evenly distributed along the radial circumference, and a gap 610 for passing the coolant is left between the support blocks 620. One end of the support block 620 abuts against the outer wall of the inner conductor 10, and the other end abuts against the inner wall of the outer metal tube 20. The support blocks 620 on the same radial circumference constitute a support structure 60. The support structure 60 is used to support the outer metal tube 20 to ensure the connection stability between the outer metal tube 20 and the inner conductor 10.

[0047] Furthermore, a first protrusion (unnumbered) is provided on one of the outer wall of the inner conductor 10 and the end face of one end of the support block 620, and a first groove 2 matching the first protrusion is provided on the other, and the support block 620 and the inner conductor 10 are fixed by clamping the first protrusion and the first groove 2.

[0048] Furthermore, a second protrusion 3 is provided on one of the other end surface of the support block 620 and the inner wall of the outer metal tube 20, and a second groove 4 matching the second protrusion 3 is provided on the other end surface, and the support block 620 and the outer metal tube 20 are fixed by clamping the second protrusion 3 and the second groove 4.

[0049] In a specific application, the support structure 60 is fixed to the outer surface of the inner conductor 10 by a plastic coating process, and the two are fixed by a first protrusion and a first slot, and then the first outer metal tube 210 and the second outer metal tube 220 are welded by a laser welding process to form an outer metal tube 20. The outer metal tube 20 and the support structure 60 are limited by the design of the second protrusion 3 and the second slot, and a cavity 40 channel is formed between the outer metal tube 20, the inner conductor 10 and the support structure 60, and then a steel frame cover 30 is installed at both ends of the outer metal tube 20 as a plug.

[0050] like Figure 2 As shown, there are multiple support structures 60 , and the multiple support structures 60 are arranged at intervals along the extension direction of the inner conductor 10 .

[0051] In one embodiment, the inner conductor 10 is provided with at least one bending portion, and the outer metal tube 20 is arranged according to the shape of the inner conductor 10 .

[0052] In one embodiment, at least one grounding device 80 is electrically connected to the outer circumference of the outer metal tube 20 to ensure the shielding effectiveness of the outer metal tube 20 .

[0053] Although some specific embodiments of the present invention have been described in detail by way of examples, it should be understood by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the present invention. It should be understood by those skilled in the art that the above embodiments may be modified without departing from the scope and spirit of the present invention. The scope of the present invention is defined by the appended claims.

Claims

1. A liquid-cooled conductor structure, characterized in that: It comprises an inner conductor, an outer metal tube sleeved on the outer periphery of the inner conductor, and covers arranged at both ends of the outer metal tube, and a through cavity is arranged between the inner conductor and the outer metal tube. An axial hole is provided at the center of the cover, and an annular groove is provided on the opposite sides of the two covers. The sealing cover is fixedly arranged on the inner conductor through the axial hole, and the two ends of the outer metal tube are fixedly arranged in the annular groove. The sealing cover is interference fit with the outer metal tube and the inner conductor to seal the two ends of the cavity.

2. The liquid-cooled conductor structure according to claim 1, characterized in that: Both ends of the inner conductor are connected to terminals, and the terminals include a connecting portion and a fixing portion that are connected to each other. The inner conductor is connected to the fixing portion, and the connecting portion is used to connect to a docking electrical device.

3. The liquid-cooled conductor structure according to claim 2, characterized in that: The inner conductor is a solid conductor, and the end of the solid conductor is connected to the fixing part by butt joint or overlap welding; or, the inner conductor is a hollow tube, and a crimping groove is provided on the outer peripheral surface of the fixing part. The fixing part is extended into the hollow tube and then crimped, and the wall of the hollow tube is pressed into the crimping groove and fixed.

4. The liquid-cooled conductor structure according to claim 1, characterized in that: The cavity also includes at least two support blocks evenly distributed along the radial circumference, with a gap left between the support blocks for passing the coolant. One end of the support block abuts against the outer wall of the inner conductor, and the other end abuts against the inner wall of the outer metal tube. The support blocks on the same radial circumference constitute a support structure.

5. The liquid-cooled conductor structure according to claim 4, characterized in that: A first protrusion is provided on one of the outer wall of the inner conductor and the end surface of one end of the support block, and a first groove matching the first protrusion is provided on the other. The support block and the inner conductor are fixed by the first protrusion and the first groove.

6. The liquid-cooled conductor structure according to claim 5, characterized in that: A second protrusion is provided on one of the other end surface of the support block and the inner wall of the outer metal tube, and a second groove matching the second protrusion is provided on the other end surface, and the support block and the outer metal tube are fixed by the second protrusion and the second groove.

7. The liquid-cooled conductor structure according to claim 4, characterized in that: There are multiple support structures, and the multiple support structures are arranged at intervals along the extension direction of the inner conductor.

8. The liquid-cooled conductor structure according to claim 1, characterized in that: The two ends of the outer peripheral surface of the outer metal tube are respectively connected with a liquid inlet pipe and a liquid outlet pipe.

9. The liquid-cooled conductor structure according to claim 1, characterized in that: The inner conductor is provided with at least one bending portion, and the outer metal tube is arranged in accordance with the shape.

10. The liquid-cooled conductor structure according to claim 1, characterized in that: At least one grounding device is electrically connected to the outer peripheral surface of the outer metal tube.

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