Electric connection assembly and charging device

Abstract

The invention discloses an electric connection assembly and a charging device. The electrical connection assembly comprises a charging terminal having a first connection end; the power transmission piece comprises a metal bar with a second connecting end; a heat dissipation block; and the fastener is used for fastening the first connecting end, the second connecting end and the heat dissipation block together. The heat dissipation block is in thermal contact with the first connecting end of the charging terminal or is in thermal contact with the first connecting end of the charging terminal and the second connecting end of the power transmission piece at the same time. According to the invention, the heat dissipation block is in direct thermal contact with the charging terminal, so that the heat on the charging terminal can be quickly transferred to the heat dissipation block, the temperature of the charging terminal can be effectively reduced, and the charging efficiency and the charging safety are improved.

Description

Technical Field

[0001] The present invention relates to an electrical connection component and a charging device including the electrical connection component. Background Technology

[0002] In existing technologies, charging docks typically include a housing, charging terminals, and a power transmission component. The charging terminals are housed within the housing, and one end of the power transmission component extends into the housing and is electrically connected to the charging terminals. In existing technologies, increasing the charging current is usually necessary to improve charging speed. When a large current passes through the charging terminals, the terminals overheat significantly, affecting charging efficiency and safety. Summary of the Invention

[0003] The purpose of this invention 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, an electrical connection assembly is provided. The electrical connection assembly includes: a charging terminal having a first connection end; a power transmission element including a metal busbar having a second connection end; a heat sink; and fasteners for fastening the first connection end, the second connection end, and the heat sink together. The heat sink is in thermal contact with the first connection end of the charging terminal or simultaneously in thermal contact with both the first connection end of the charging terminal and the second connection end of the power transmission element.

[0005] According to another exemplary embodiment of the present invention, the fastener includes: a nut disposed or fixed to the other side of the first connection end of the charging terminal; and a bolt passing through the first connection end, the second connection end and the heat sink and threadedly connected to the nut.

[0006] According to another exemplary embodiment of the present invention, a first connecting hole, a second connecting hole, and a third connecting hole that allow the bolt to pass through are respectively formed on the first connecting end, the second connecting end, and the heat sink; the second connecting hole is an elongated elliptical hole and its major axis is parallel to the axial direction of the charging terminal, and the first connecting hole and the third connecting hole are circular holes.

[0007] According to another exemplary embodiment of the present invention, a plurality of third connection holes are formed on the heat sink, the plurality of third connection holes being spaced apart axially on the charging terminal, such that the mounting position of the heat sink relative to the first connection end and the second connection end can be adjusted.

[0008] According to another exemplary embodiment of the present invention, a receiving recess is formed on the heat sink, and the head of the bolt is received in the receiving recess of the heat sink.

[0009] According to another exemplary embodiment of the present application, a positioning groove is formed on the heat sink, and a portion of the end of the power transmission member is positioned in the positioning groove of the heat sink.

[0010] According to another exemplary embodiment of the present application, a threaded hole is formed on the heat sink, and a first connecting hole and a second connecting hole are respectively formed on the first connecting end and the second connecting end; the fastener includes a bolt which passes through the first connecting hole and the second connecting hole and is threadedly connected with the threaded hole on the heat sink.

[0011] According to another exemplary embodiment of the present application, the first connecting end and the second connecting end are flat and each has two opposite sides in the thickness direction thereof, one side of the first connecting end of the charging terminal is in electrical contact with one side of the second connecting end of the power transmission member; the heat sink is in thermal contact with the other side of the first connecting end of the charging terminal or is in thermal contact with the other side of the first connecting end of the charging terminal and the other side of the second connecting end of the power transmission member at the same time. According to another exemplary embodiment of the present application, the heat sink has a flat contact surface; the contact surface of the heat sink is attached to the surface of the first connecting end or the second connecting end.

[0012] According to another exemplary embodiment of the present application, the power transmission member further includes an outer insulating layer which wraps the outside of the metal row, and the second connecting end of the metal row is exposed from the outer insulating layer.

[0013] According to another exemplary embodiment of the present application, a black heat radiation film is formed on the surface of the heat sink to improve the heat radiation coefficient and the heat radiation efficiency of the heat sink.

[0014] According to another exemplary embodiment of the present application, the heat radiation film is a black oxidation film formed by surface anodization treatment of the heat sink.

[0015] According to another exemplary embodiment of the present application, the heat radiation film is a black coating layer formed by surface oil spraying treatment of the heat sink.

[0016] According to another aspect of the present application, an electrical connection assembly is provided. The electrical connection assembly includes a charging terminal, a power transmission member electrically connected with the charging terminal, and a heat sink in thermal contact with the charging terminal. A black heat radiation film is formed on the surface of the heat sink to improve the heat radiation coefficient and the heat radiation efficiency of the heat sink.

[0017] According to another exemplary embodiment of the present application, the heat radiation film is a black oxidation film formed by surface anodization treatment of the heat sink.

[0018] According to another exemplary embodiment of the present application, the heat dissipation film is a black coating formed by surface oiling treatment of the heat dissipation block.

[0019] According to another aspect of the present application, there is provided a charging device. The charging device includes a housing and the aforementioned electrical connection assembly installed into the housing. The second connection end of the power transmission member, the charging terminal and the heat dissipation block are located in the housing, and the power transmission member is drawn out of a rear port of the housing.

[0020] According to an exemplary embodiment of the present application, the housing includes a front housing and a rear housing which are opposite in the axial direction of the charging terminal and assembled together, and a terminal insertion hole is formed in the front housing; the charging terminal has an axially opposite first connection end and a mating end, the mating end of the charging terminal is inserted into the terminal insertion hole for mating with an inserted mating charging terminal; the first connection end of the charging terminal, the second connection end of the power transmission member and the heat dissipation block are accommodated in the inner cavity of the rear housing.

[0021] According to another exemplary embodiment of the present application, a mounting port allowing a bolt to enter is formed on the top wall of the rear housing, so that the first connection end, the second connection end and the heat dissipation block can be fastened together by a bolt entering from the mounting port.

[0022] According to another exemplary embodiment of the present application, the charging device further includes a sealing plug inserted into the mounting port of the rear housing to seal the mounting port.

[0023] According to another exemplary embodiment of the present application, the charging device includes two electrical connection assemblies arranged side by side, two mounting ports corresponding to the bolts of the two electrical connection assemblies, respectively, are formed on the top wall of the rear housing, and the charging device includes two sealing plugs inserted into the two mounting ports, respectively.

[0024] According to another exemplary embodiment of the present application, a first protrusion is formed on the outside of the rear end of the front housing, a first clamping groove is formed on the outside of the front end of the rear housing, and the first clamping groove engages with the first protrusion to lock the front housing and the rear housing together.

[0025] According to another exemplary embodiment of the present application, the charging device further includes a sealing member installed into the rear port of the rear housing to seal the rear port. A through hole allowing the power transmission member to pass through is formed on the sealing member, and the power transmission member is in interference fit with the hole wall of the through hole on the sealing member to achieve sealing therebetween.

[0026] According to another exemplary embodiment of the present application, the housing further comprises a rear end cover, the rear end cover is mounted on the rear end port of the rear housing, and the power transmission member is led out of the housing via a through hole on the rear end cover.

[0027] According to another exemplary embodiment of the present application, a second protrusion is formed on the outer side of the peripheral wall of the rear end port of the rear housing, and a second clamping groove is formed on the rear end cover, the second clamping groove is engaged with the second protrusion to lock the rear end cover on the rear housing.

[0028] According to another exemplary embodiment of the present application, the charging device is a charging base or a charging gun.

[0029] In the foregoing exemplary embodiments of the present application, the fastener is used to fasten the charging terminal, the power transmission member and the heat sink together. The heat sink is in direct thermal contact with the connecting end of the charging terminal or the power transmission member, so that the heat on the charging terminal can be quickly transferred to the heat sink, thereby effectively reducing the temperature of the charging terminal and improving the charging efficiency and charging safety.

[0030] In the foregoing exemplary embodiments of the present application, the heat sink not only can absorb a large amount of heat, but also has a large heat dissipation area and a high heat radiation coefficient, so that the absorbed heat can be quickly dissipated through thermal convection and thermal radiation, thereby effectively avoiding a large temperature rise of the charging terminal during charging and improving the charging efficiency and charging safety.

[0031] Other objects and advantages of the present application will be more fully apparent from the following description taken in conjunction with the accompanying drawings, in which: BRIEF DESCRIPTION OF DRAWINGS

[0032] Figure 1 FIG. 1 shows a perspective view of a charging base according to an exemplary embodiment of the present application;

[0033] Figure 2 FIG. 2 shows an exploded view of the charging base according to an exemplary embodiment of the present application;

[0034] Figure 3 FIG. 3 shows another exploded view of the charging base according to an exemplary embodiment of the present application;

[0035] Figure 4 FIG. 4 shows another exploded view of the charging base according to an exemplary embodiment of the present application;

[0036] Figure 5 FIG. 5 shows a perspective view of an electrical connection assembly of the charging base according to an exemplary embodiment of the present application;

[0037] Figure 6 An axial schematic diagram of an electrical connection assembly of a charging dock according to an exemplary embodiment of the present invention is shown.

[0038] Figure 7 An exploded schematic diagram of an electrical connection component of a charging dock according to an exemplary embodiment of the present invention is shown.

[0039] Figure 8 A perspective view showing a heat sink of an electrical connection component of a charging dock according to an exemplary embodiment of the present invention;

[0040] Figure 9 A cross-sectional view of a heat sink of an electrical connection component of a charging dock according to an exemplary embodiment of the present invention is shown.

[0041] Figure 10 show Figure 9 A magnified view of region A in the diagram. Detailed Implementation

[0042] The technical solution of the present invention 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 the present invention with reference to the accompanying drawings is intended to explain the overall inventive concept of the present invention and should not be construed as a limitation thereof.

[0043] 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.

[0044] According to a general technical concept of the present invention, an electrical connection assembly is provided. The electrical connection assembly includes: a charging terminal having a first connection end; a power transmission component including a metal busbar having a second connection end; a heat sink; and fasteners for fastening the first connection end, the second connection end, and the heat sink together. The heat sink is in thermal contact with the first connection end of the charging terminal or simultaneously in thermal contact with both the first connection end of the charging terminal and the second connection end of the power transmission component.

[0045] According to another general technical concept of the present invention, an electrical connection assembly is provided. The electrical connection assembly includes: a charging terminal; a power transmission element electrically connected to the charging terminal; and a heat sink in thermal contact with the charging terminal. A black heat dissipation film is formed on the surface of the heat sink to improve the heat radiation coefficient and heat dissipation efficiency of the heat sink.

[0046] According to another general technical concept of the present invention, a charging device is provided. The charging device includes: a housing; and the aforementioned electrical connection assembly, which is mounted in the housing. A second connection end of the power transmission element, the charging terminal, and the heat sink are located within the housing, and the power transmission element extends from a rear port of the housing.

[0047] Figure 1 A perspective view of a charging dock according to an exemplary embodiment of the present invention is shown; Figure 2 An exploded view of a charging dock according to an exemplary embodiment of the present invention is shown; Figure 3 Another exploded view of a charging dock according to an exemplary embodiment of the present invention is shown; Figure 4 Another exploded view of a charging dock according to an exemplary embodiment of the present invention is shown; Figure 5 A perspective view showing an electrical connection assembly 100 of a charging dock according to an exemplary embodiment of the present invention; Figure 6 An axial schematic diagram of an electrical connection assembly 100 of a charging dock according to an exemplary embodiment of the present invention is shown. Figure 7 An exploded view of an electrical connection assembly 100 of a charging dock according to an exemplary embodiment of the present invention is shown. Figure 8 A perspective view showing a heat sink 3 of an electrical connection assembly 100 of a charging dock according to an exemplary embodiment of the present invention; Figure 9 A cross-sectional view of a heat sink 3 of an electrical connection component of a charging dock according to an exemplary embodiment of the present invention is shown. Figure 10 show Figure 9 A magnified view of region A in the diagram.

[0048] like Figures 1 to 10 As shown, in an exemplary embodiment of the present invention, an electrical connection assembly is disclosed. The electrical connection assembly includes: a charging terminal 1, a power transmission component 2, a heat sink 3, and a fastener 5. The charging terminal 1 has a first connection end 10. The power transmission component 2 includes a metal busbar 21 having a second connection end 20. The fastener 5 secures the first connection end 10 of the charging terminal 1, the second connection end 20 of the power transmission component 2, and the heat sink 3 together. The heat sink 3 is in thermal contact with the first connection end 10 of the charging terminal 1, or simultaneously in thermal contact with both the first connection end 10 of the charging terminal 1 and the second connection end 20 of the power transmission component 2.

[0049] like Figures 1 to 10As shown, in the illustrated embodiment, the fastener 5 includes a nut 52 and a bolt 51. The nut 52 is disposed on or fixed to the first connection end 10 of the charging terminal 1. The bolt 51 passes through the first connection end 10, the second connection end 20, and the heat sink 3 and is threadedly connected to the nut 52. In the illustrated embodiment, the nut 52 can be riveted or welded to the first connection end 10 of the charging terminal 1.

[0050] like Figures 1 to 10 As shown in the illustrated embodiment, a first connecting hole 101, a second connecting hole 201, and a third connecting hole 301 are respectively formed on the first connecting end 10, the second connecting end 20, and the heat sink 3, allowing the bolt 51 to pass through. The second connecting hole 201 is an elongated elliptical hole with its major axis parallel to the axial direction of the charging terminal 1, while the first connecting hole 101 and the third connecting hole 301 are circular holes. In the illustrated embodiment, because the second connecting hole 201 is an elongated elliptical hole, the bolt 51 can move along the axial direction of the charging terminal 1 within the second connecting hole 201, thereby absorbing certain installation and manufacturing errors.

[0051] like Figures 1 to 10 As shown in the illustrated embodiment, a plurality of third connection holes 301 are formed on the heat sink 3. The plurality of third connection holes 301 are spaced apart axially from the charging terminal 1, so that the mounting position of the heat sink 3 relative to the first connection end 10 and the second connection end 20 can be adjusted.

[0052] like Figures 1 to 10 As shown in the illustrated embodiment, a receiving recess 31 is formed on the heat sink 3, and the head 51a of the bolt 51 is received in the receiving recess 31 of the heat sink 3.

[0053] like Figures 1 to 10 As shown in the illustrated embodiment, a positioning groove 302 is formed on the heat sink 3, and a portion of the end of the power transmission component 2 is positioned in the positioning groove 302 of the heat sink 3.

[0054] This invention is not limited to the illustrated embodiments. For example, in another exemplary embodiment of the invention, a threaded hole (not shown) is formed on the heat sink 3, and a first connecting hole 101 and a second connecting hole 201 are formed on the first connecting end 10 and the second connecting end 20, respectively. The fastener 5 includes a bolt 51, which passes through the first connecting hole 101 and the second connecting hole 201 and is threadedly connected to the threaded hole on the heat sink 3.

[0055] like Figures 1 to 10As shown in the illustrated embodiment, the first connecting end 10 and the second connecting end 20 are flat and each has two opposite sides in its thickness direction. One side of the first connecting end 10 of the charging terminal 1 is in electrical contact with one side of the second connecting end 20 of the power transmission member 2. The heat sink 3 is in thermal contact with the other side of the first connecting end 10 of the charging terminal 1, or simultaneously in thermal contact with both the other side of the first connecting end 10 of the charging terminal 1 and the other side of the second connecting end 20 of the power transmission member 2.

[0056] like Figures 1 to 10 As shown, in the illustrated embodiment, the heat sink 3 has a flat contact surface 30. The contact surface 30 of the heat sink 3 abuts against the surface of the first connecting end 10 or the second connecting end 20.

[0057] like Figures 1 to 10 As shown in the illustrated embodiment, the power transmission component 2 further includes an outer insulating layer 22 that wraps around the outside of the metal busbar 21, with the second connection end 20 of the metal busbar 21 exposed from the outer insulating layer 22.

[0058] However, the present invention is not limited to the illustrated embodiments. For example, in another exemplary embodiment of the present invention, the power transmission component 2 may include a cable and a connection terminal electrically connected to one end of the conductor core of the cable, one end of which serves as a second connection end 20.

[0059] like Figures 1 to 10 As shown in the illustrated embodiment, a black heat dissipation film 3a is formed on the surface of the heat sink 3 to improve the thermal radiation coefficient and heat dissipation efficiency of the heat sink 3.

[0060] like Figures 1 to 10 As shown, in an exemplary embodiment of the present invention, the aforementioned heat dissipation film 3a can be a black oxide film formed by surface anodizing of the heat sink 3.

[0061] like Figures 1 to 10 As shown, in another exemplary embodiment of the present invention, the aforementioned heat dissipation film 3a may be a black coating formed by spraying oil onto the surface of the heat sink 3.

[0062] like Figures 1 to 10 As shown, in another exemplary embodiment of the present invention, an electrical connection assembly is also disclosed. The electrical connection assembly includes: a charging terminal 1, a power transmission component 2, and a heat sink 3. The power transmission component 2 is electrically connected to the charging terminal 1. The heat sink 3 is in thermal contact with the charging terminal 1. A black heat dissipation film 3a is formed on the surface of the heat sink 3 to improve the thermal radiation coefficient and heat dissipation efficiency of the heat sink 3.

[0063] like Figures 1 to 10As shown, in another exemplary embodiment of the present invention, a charging device is also disclosed. The charging device includes a housing 4 and an electrical connection assembly 100. The electrical connection assembly 100 is mounted in the housing 4. A second connection end 20 of a power transmission element 2, a charging terminal 1, and a heat sink 3 are located in the housing 4, and the power transmission element 2 extends from a rear port 402 of the housing 4.

[0064] like Figures 1 to 10 As shown in the illustrated embodiment, the housing 4 includes a front housing 41 and a rear housing 42 that are axially opposed to and assembled together with the charging terminal 1. A terminal socket 401 is formed in the front housing 41. The charging terminal 1 has a first connecting end 10 and a mating end 11 that are axially opposed to each other. The mating end 11 of the charging terminal 1 is inserted into the terminal socket 401 for mating with an inserted mating charging terminal (not shown). The first connecting end 10 of the charging terminal 1, the second connecting end 20 of the power transmission element 2, and the heat sink 3 are accommodated in the cavity of the rear housing 42.

[0065] like Figures 1 to 10 As shown in the illustrated embodiment, a mounting port 403 is formed on the top wall of the rear housing 42 to allow bolts 51 to enter, so that the first connecting end 10, the second connecting end 20 and the heat sink 3 can be fastened together by bolts 51 entering from the mounting port 403.

[0066] like Figures 1 to 10 As shown, in the illustrated embodiment, the charging device further includes a sealing plug 7, which is inserted into the mounting port 403 of the rear housing 42 to seal the mounting port 403.

[0067] like Figures 1 to 10 As shown in the illustrated embodiment, the charging device includes two electrical connection components 100 arranged side by side, and two mounting ports 403 are formed on the top wall of the rear housing 42, corresponding to the bolts 51 of the two electrical connection components 100 respectively. The charging device includes two sealing plugs 7 that are respectively inserted into the two mounting ports 403.

[0068] like Figures 1 to 10 As shown in the illustrated embodiment, a first protrusion 41a is formed on the outer side of the rear end of the front housing 41, and a first slot 42a is formed on the outer side of the front end of the rear housing 42. The first slot 42a engages with the first protrusion 41a to lock the front housing 41 and the rear housing 42 together.

[0069] like Figures 1 to 10As shown in the illustrated embodiment, the charging device further includes a seal 6, which is installed in the rear port 402 of the rear housing 42 to seal the rear port 402. A through hole 6a is formed on the seal 6 to allow the power transmission member 2 to pass through. The power transmission member 2 is press-fitted with the wall of the through hole 6a on the seal 6 to achieve a seal between the two.

[0070] like Figures 1 to 10 As shown, in the illustrated embodiment, the housing 4 also includes a rear end cover 43, which is mounted on the rear port 402 of the rear housing 42, and the power transmission component 2 is led out from the housing 4 through a through hole in the rear end cover 43.

[0071] like Figures 1 to 10 As shown in the illustrated embodiment, a second protrusion 42b is formed on the outer side of the peripheral wall of the rear port 402 of the rear housing 42, and a second slot 43b is formed on the rear end cover 43. The second slot 43b engages with the second protrusion 42b to lock the rear end cover 43 onto the rear housing 42.

[0072] like First Experimental Example As shown in the illustrated embodiment, the charging device can be a charging dock or a charging gun.

[0073] The following experiment compares the temperature rise of a charging device with and without anodized surface of heat sink 3 under the same conditions.

[0074] Terminal +

[0075] Table 1 shows the temperature rise of the charging device whose surface of the heat sink has not undergone anodizing treatment; Table 2 shows the temperature rise of the charging device whose surface of the heat sink has undergone anodizing treatment.

[0076] Table 1 shows that the heat sinks were not anodized.

[0077] Terminal - Heat sink + Heat sink - Metal bar + Metal bar - Bolt + Bolt - Outer insulation layer + Outer insulation layer - Temperature rise Terminal + 68.8 64 54 56.7 69 66.1 64.9 61 61.4 60.2

[0078] Table 2 shows the heat sinks after anodizing treatment.

[0079] Terminal - Heat sink + Heat sink - Metal bar + Metal bar - Bolt + Bolt - Outer insulation layer + Outer insulation layer - Temperature rise Second Experimental Example 47.2 42.5 32.5 35.2 47.5 44.6 43.5 36.9 39.7 38.6

[0080] In this diagram, the symbol "+" represents the positive terminal and the symbol "-" represents the negative terminal. For example, "terminal +" represents the positive charging terminal and "terminal -" represents the negative charging terminal. According to Tables 1 and 2, it is clear that the charging device with anodized surface treatment on heat sink 3 exhibits better heat dissipation performance and lower temperature rise.

[0081] Terminal +

[0082] Table 3 shows the temperature rise of the charging device whose surface of the heat sink has not undergone anodizing treatment; Table 4 shows the temperature rise of the charging device whose surface of the heat sink has undergone anodizing treatment.

[0083] Table 3 shows that the heat sinks were not anodized.

[0084] Terminal - Heat sink + Heat sink Metal bar + Metal bar - Bolt + Bolt - Outer insulation layer + Outer insulation layer - Temperature rise Terminal + 62.6 60.1 62.2 60.6 66.4 65 65.3 64.4 60 59.7

[0085] Table 4 shows the heat sinks after anodizing treatment.

[0086] Terminal - Heat sink + Heat sink Metal bar + Metal bar - Bolt + Bolt - Outer insulation layer + Outer insulation layer - Temperature rise ​ 39.3 36.9 38.9 37.3 43.2 41.7 42 41.1 36.7 36.4

[0087] In this diagram, the symbol "+" represents the positive terminal and the symbol "-" represents the negative terminal. For example, "terminal +" represents the positive charging terminal and "terminal -" represents the negative charging terminal. According to Tables 1 and 2, it is clear that the charging device with anodized surface treatment on heat sink 3 exhibits better heat dissipation performance and lower temperature rise.

[0088] 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 invention.

[0089] Although the invention has been described in conjunction with the accompanying drawings, the embodiments disclosed in the drawings are intended to illustrate preferred embodiments of the invention and should not be construed as limiting the invention.

[0090] While some embodiments of the general concept of the invention 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 the invention, the scope of which is defined by the claims and their equivalents.

[0091] 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 the invention.

Claims

1. An electrical connection assembly, characterized by Comprising: a charging terminal (1) having a first connecting end (10); a power transmission member (2) including a metal bar (21) having a second connecting end (20); a heat sink (3); and a fastener (5) fastening the first connecting end (10), the second connecting end (20), and the heat sink (3) together, the heat sink (3) is in thermal contact with the first connecting end (10) of the charging terminal (1) or is in thermal contact with both the first connecting end (10) of the charging terminal (1) and the second connecting end (20) of the power transmission member (2).

2. The electrical connection assembly according to claim 1, wherein: the fastener (5) includes: a nut (52) disposed on or fixed to the other side of the first connecting end (10) of the charging terminal (1); and a bolt (51) passing through the first connecting end (10), the second connecting end (20), and the heat sink (3) and being threadedly connected with the nut (52).

3. The electrical connection assembly according to claim 2, wherein: first, second, and third connecting holes (101, 201, 301) allowing the bolt (51) to pass therethrough are respectively formed in the first connecting end (10), the second connecting end (20), and the heat sink (3); the second connecting hole (201) is an oblong hole and its long axis is parallel to the axial direction of the charging terminal (1), and the first and third connecting holes (101, 301) are circular holes.

4. The electrical connection assembly according to claim 3, wherein: a plurality of third connecting holes (301) are formed in the heat sink (3), and the plurality of third connecting holes (301) are spaced apart in the axial direction of the charging terminal (1) so that the mounting position of the heat sink (3) relative to the first and second connecting ends (10, 20) can be adjusted.

5. The electrical connection assembly according to claim 2, wherein: an accommodation recess (31) is formed in the heat sink (3), and a head portion (51a) of the bolt (51) is accommodated in the accommodation recess (31) of the heat sink (3).

6. The electrical connection assembly according to claim 2, wherein: a positioning groove (302) is formed in the heat sink (3), and a portion of the end portion of the power transmission member (2) is positioned in the positioning groove (302) of the heat sink (3).

7. The electrical connection assembly according to claim 1, wherein: a threaded hole is formed in the heat sink (3), and first and second connecting holes (101, 201) are respectively formed in the first and second connecting ends (10, 20); the fastener (5) includes: a bolt (51) passing through the first and second connecting holes (101, 201) and being threadedly connected with the threaded hole in the heat sink (3).

8. The electrical connection assembly according to claim 1, wherein: ​ The first connecting end (10) and the second connecting end (20) are flat and each has two opposite sides in the thickness direction, one side of the first connecting end (10) of the charging terminal (1) is in electrical contact with one side of the second connecting end (20) of the power transmission member (2); The heat dissipation block (3) is in thermal contact with the other side of the first connecting end (10) of the charging terminal (1) or is in thermal contact with the other side of the first connecting end (10) of the charging terminal (1) and the other side of the second connecting end (20) of the power transmission member (2) at the same time.

9. The electrical connection assembly according to claim 1, characterized in that: The heat dissipation block (3) has a flat contact surface (30) which is attached to the surface of the first connecting end (10) or the second connecting end (20).

10. The electrical connection assembly according to claim 1, characterized in that: The power transmission member (2) further comprises an outer insulating layer (22) which wraps the outside of the metal strip (21), and the second connecting end (20) of the metal strip (21) is exposed from the outer insulating layer (22).

11. The electrical connection assembly according to any one of claims 1-10, characterized in that: A black heat dissipation film (3a) is formed on the surface of the heat dissipation block (3) to improve the heat radiation coefficient and heat dissipation efficiency of the heat dissipation block (3).

12. The electrical connection assembly according to claim 11, characterized in that: The heat dissipation film (3a) is a black oxidation film formed by surface anodizing treatment of the heat dissipation block (3); or The heat dissipation film (3a) is a black coating layer formed by surface oil spraying treatment of the heat dissipation block (3).

13. An electrical connection assembly, characterized by Comprising: a charging terminal (1); a power transmission member (2) electrically connected with the charging terminal (1); and a heat dissipation block (3) in thermal contact with the charging terminal (1), a black heat dissipation film (3a) is formed on the surface of the heat dissipation block (3) to improve the heat radiation coefficient and heat dissipation efficiency of the heat dissipation block (3).

14. The electrical connection assembly according to claim 13, characterized in that: The heat dissipation film (3a) is a black oxidation film formed by surface anodizing treatment of the heat dissipation block (3); or The heat dissipation film (3a) is a black coating layer formed by surface oil spraying treatment of the heat dissipation block (3).

15. A charging device, characterized by Comprising: a housing (4); and the electrical connection assembly (100) according to any one of claims 1-14 is installed into the housing (4), the charging terminal (1) and the heat dissipation block (3) are located in the housing (4), and the power transmission member (2) is led out from the rear port (402) of the housing (4).

16. The charging device according to claim 15, characterized in that: The housing (4) comprises a front housing (41) and a rear housing (42) which are opposite in the axial direction of the charging terminal (1) and are assembled together, and a terminal insertion hole (401) is formed in the front housing (41); The charging terminal (1) has axially opposite first connecting end (10) and counter end (11), the counter end (11) of the charging terminal (1) is inserted into the terminal insertion hole (401), for being matched with the inserted counter charging terminal, The first connecting end (10) of the charging terminal (1), the second connecting end (20) of the power transmission piece (2) and the heat dissipation block (3) are accommodated in the inner cavity of the rear shell (42).

17. The charging device according to claim 16, characterized in that: An installation port (403) allowing the bolt (51) to enter is formed on the top wall of the rear shell (42), so that the first connecting end (10), the second connecting end (20) and the heat dissipation block (3) can be fastened together by the bolt (51) entering from the installation port (403).

18. The charging device of claim 17, wherein, Further comprising: A sealing plug (7) is inserted into the installation port (403) of the rear shell (42) to seal the installation port (403).

19. The charging device according to claim 18, characterized in that: The charging device includes two electric connection assemblies (100) arranged side by side, two installation ports (403) corresponding to the bolts (51) of the two electric connection assemblies (100) respectively are formed on the top wall of the rear shell (42), and the charging device includes two sealing plugs (7) inserted into the two installation ports (403) respectively.

20. The charging device according to claim 16, characterized in that: A first protrusion (41a) is formed on the outer side of the rear end of the front shell (41), a first clamping groove (42a) is formed on the outer side of the front end of the rear shell (42), and the first clamping groove (42a) is engaged with the first protrusion (41a) to lock the front shell (41) and the rear shell (42) together.

21. The charging apparatus of claim 16, wherein, Further comprising: A sealing member (6) is installed into the rear port (402) of the rear shell (42) to seal the rear port (402), A through hole (6a) allowing the power transmission piece (2) to pass through is formed on the sealing member (6), and the power transmission piece (2) is in interference fit with the hole wall of the through hole (6a) on the sealing member (6) to realize sealing therebetween.

22. The charging device according to claim 21, characterized in that: The shell (4) further includes a rear end cover (43) installed onto the rear port (402) of the rear shell (42), and the power transmission piece (2) is led out of the shell (4) via a through hole on the rear end cover (43).

23. The charging device according to claim 22, characterized in that: A second protrusion (42b) is formed on the outer side of the peripheral wall of the rear port (402) of the rear shell (42), and a second clamping groove (43b) is formed on the rear end cover (43), and the second clamping groove (43b) is engaged with the second protrusion (42b) to lock the rear end cover (43) onto the rear shell (42).

24. The charging device of any one of claims 15-23, wherein: The charging device is a charging base or a charging gun. The charging device is a charging base or a charging gun.

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