Electric connection assembly and charging seat assembly

Abstract

To provide an electric connection assembly achieving an easy operation to connect between a connection assembly and a charging seat.SOLUTION: An electric connection assembly includes: a housing 10 which is provided with a fitting end 11 that is suitable for being inserted into a fitting port on a charging seat housing 20; a conductive terminal which is provided in the fitting end of the housing for being electrically contacted with a charging terminal in the charging seat housing; a power transmission component which has one end extending into the housing; and a fastener 14 which is provided in the housing and passes through the one end of the power transmission component and the conductive terminal. The fastener is screwed into a nut inside the charging seat housing after the fitting end of the housing is inserted into the fitting port of the charging seat housing, so that the power transmission component, the conductive terminal and the charging terminal are fastened together.SELECTED DRAWING: Figure 7

Description

[Technical Field]

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS This application claims the benefit of Chinese Patent Application No. CN202410436746.0, filed on April 11, 2024, with the State Intellectual Property Office of China, the entire disclosure of which is incorporated herein by reference.

[0002] The present invention relates to an electrical connection assembly and a charging base assembly including an electrical connection assembly. [Background technology]

[0003] In the prior art, with the development of new energy vehicles, competition in the new energy vehicle industry is becoming increasingly fierce. Although aluminum busbar connection solutions are low-cost and can carry high currents, the connection between the aluminum busbar and the charging terminal of the charging base is relatively difficult. Because the charging base is typically pre-fixed to the vehicle sheet metal, during connection, the operator cannot see the connection end of the charging terminal and the nut fixed to the connection end, making it difficult for the operator to move the connection hole in the aluminum busbar to a connection position aligned with the nut inside the charging base housing. In addition, during connection, the operator needs to hold the aluminum busbar with one hand and connect the fastening bolt with the other hand, which is very inconvenient to operate.

[0004] In addition, in the prior art, the fasteners used for threaded connection with the nuts inside the charging base are usually separate and independent components, which not only makes the fasteners easy to lose, but also causes a lot of inconvenience in the fastener connection operation. Summary of the Invention [Problem to be solved by the invention]

[0005] The present invention has been made to overcome or alleviate at least one aspect of the above-mentioned difficulties. [Means for solving the problem]

[0006] According to one aspect of the present invention, an electrical connection assembly is provided. The electrical connection assembly includes: a housing having a mating end suitable for insertion into a mating port of a charging base housing; a conductive terminal provided at the mating end of the housing for electrical contact with a charging terminal inside the charging base housing; a power transfer component, one end of the power transfer component extending into the housing; and a fastener provided on the housing and passing through the one end of the power transfer component and the conductive terminal. The fastener is configured to thread into a nut inside the charging base housing after the mating end of the housing is inserted into the mating port of the charging base housing to fasten the power transfer component, the conductive terminal, and the charging terminal together.

[0007] In accordance with an exemplary embodiment of the present invention, the housing has top and bottom walls axially opposite a mating end, the mating end being cylindrical and projecting from the top wall of the housing.

[0008] In accordance with another exemplary embodiment of the present invention, the electrical connection assembly further includes a sealing ring mounted on the mating end and configured to be radially compressed between an outer circumferential surface of the mating end and an inner circumferential surface of the mating port to provide a seal between the outer circumferential surface of the mating end and the inner circumferential surface of the mating port.

[0009] According to another exemplary embodiment of the present invention, an annular sealing ring mounting groove is formed in the outer circumferential surface of the mating end, and the sealing ring is mounted in the sealing ring mounting groove.

[0010] According to another exemplary embodiment of the present invention, the housing also has an installation end axially opposite the mating end, the installation end being cylindrical and protruding from the bottom wall of the housing, the installation end having an installation port that allows a fastener to enter the housing.

[0011] According to another exemplary embodiment of the present invention, the fastener is pre-installed in the housing through an installation port, and locking structures are formed on the installation end and the fastener to lock the fastener in the pre-installed position and prevent the fastener from disengaging from the housing.

[0012] According to another exemplary embodiment of the present invention, the locking structure includes a resilient buckle formed in the installation port of the installation end and an annular groove formed in the outer circumferential surface of one end of the fastener, the resilient buckle including a resilient arm connected to the circumferential wall of the installation end and a protrusion formed on the end of the resilient arm, the protrusion configured to engage with the annular groove to lock the fastener in a pre-installed position.

[0013] According to another exemplary embodiment of the present invention, the fastener includes a bolt for threaded connection with a nut inside the charging base housing, and an insulator attached to the end of the bolt to electrically isolate the bolt from a bolt manipulation tool for manipulating the bolt, wherein an annular groove is formed in the outer circumferential surface of the insulator of the fastener.

[0014] According to another exemplary embodiment of the present invention, a bolt has a threaded stem disposed at one end and a flange and a head at the other end, an insulator engages the flange and head of the bolt, the threaded stem of the bolt is used to threadably connect with a nut, and the flange of the bolt is used to abut one end of a power transfer component.

[0015] According to another exemplary embodiment of the present invention, the insulator has a joint for engaging with a bolting tool, the joint engaging with a head of the bolt, and the cross section of the joint and the head of the bolt being non-circular.

[0016] According to another exemplary embodiment of the present invention, the insulator also has a cylindrical portion and a bottom wall portion connected between the bottom of the cylindrical portion and the joint portion, the bottom wall portion engaging with the flange portion of the bolt, and an annular groove formed in the outer circumferential surface of the cylindrical portion of the insulator.

[0017] According to another exemplary embodiment of the present invention, the electrical connection assembly further includes a sealing ring mounted on the cylindrical portion of the insulator and radially compressed between an outer circumferential surface of the cylindrical portion and an inner circumferential surface of the installation end to provide a seal between the outer circumferential surface of the cylindrical portion and the inner circumferential surface of the installation end.

[0018] According to another exemplary embodiment of the present invention, a sealing ring mounting groove is formed in the outer circumferential surface of the cylindrical portion of the insulator, and the sealing ring is mounted in the sealing ring mounting groove.

[0019] According to another exemplary embodiment of the present invention, the insulator is an injection molded part that is formed on the bolt by overlay injection molding, so that the bolt and the insulator are one piece.

[0020] According to another exemplary embodiment of the present invention, one end of the conductive terminal protrudes from the opening of the mating end, and a flat contact end surface is formed on the one end of the conductive terminal, the contact end surface being perpendicular to the axial direction of the conductive terminal and used for electrical contact with the charging terminal.

[0021] According to another exemplary embodiment of the present invention, the electrical connection assembly further comprises a connection terminal electrically connected to one end of the power transmission component and configured to form electrical contact with an end face of the other end of the conductive terminal to electrically connect the one end of the power transmission component to the conductive terminal.

[0022] According to another exemplary embodiment of the present invention, a positioning flange is formed on the other end of the conductive terminal, and a positioning step is formed inside the housing, and the positioning flange is clamped between the connection terminal and the positioning step of the housing to position the conductive terminal in a predetermined installation position.

[0023] According to another exemplary embodiment of the present invention, a power transfer component comprises a flat aluminum bus bar and an outer insulating layer covering the aluminum bus bar, one end of the aluminum bus bar being exposed from the outer insulating layer, and a connection terminal being riveted or welded to the one end of the aluminum bus bar, and both the connection terminal and the conductive terminal being copper components.

[0024] According to another exemplary embodiment of the present invention, through holes are formed in one end of the aluminum bus bar, the connection terminal, and the conductive terminal, respectively, to allow fasteners to pass through, and the fasteners are used to fasten the connection terminal, the conductive terminal, and the charging terminal together, ensuring reliable electrical contact between the connection terminal, the conductive terminal, and the charging terminal.

[0025] According to another exemplary embodiment of the present invention, the housing has a front end and a rear port on opposite sides of the housing longitudinally, one end of the power transfer component is inserted into the housing through the rear port, the longitudinal direction of the housing is perpendicular to the axial direction of the mating end, and the mating end is located at a corner of the front end of the housing.

[0026] In accordance with another exemplary embodiment of the present invention, the electrical connection assembly further includes a sealing sleeve attached to the outer insulating layer of one end of the power transfer component and inserted into the rear port of the housing, the sealing sleeve being compressed between the outer insulating layer of the power transfer component and an inner wall surface of the rear port of the housing to seal the rear port.

[0027] According to another exemplary embodiment of the present invention, the electrical connection assembly further includes a rear end cover attached to the outer insulating layer at one end of the power transfer component and fastened to the rear end of the housing, the rear end cover being used to secure the power transfer component to the rear end of the housing.

[0028] According to another exemplary embodiment of the present invention, a rear end cover includes a tubular front portion adapted to be attached to a rear end of a housing, a tubular rear portion adapted to be attached to an outer insulating layer at one end of a power transfer component, and a connecting wall connected between the rear end of the tubular front portion and the front end of the tubular rear portion, wherein a buckle is formed on the tubular front portion and a protrusion is formed on an outer wall surface of the rear end of the housing, the protrusion engaging a snap slot of the buckle.

[0029] According to another exemplary embodiment of the present invention, a step is formed in the rear port of the housing, and the step and the connecting wall abut against the front and rear ends of the sealing sleeve, respectively, to position the sealing sleeve in the rear port of the housing.

[0030] According to another aspect of the present invention, a charging base assembly is provided. The charging base assembly includes a charging base and the above-described electrical connection assembly. The charging base includes a charging base housing having a mating port formed therein, a charging terminal mounted on the charging base housing, and a nut mounted on the charging base housing. A mating end of the housing of the electrical connection assembly mates with the mating port of the charging base housing, and a fastener of the electrical connection assembly threads into the nut inside the charging base housing to fasten the power transfer component, the conductive terminal, and the charging terminal together.

[0031] According to an exemplary embodiment of the present invention, the charging base includes two charging terminals, the charging base housing has two mating ports, the charging base assembly includes two electrical connection assemblies, the mating ends of the housings of the two electrical connection assemblies are inserted into the two mating ports of the charging base housing respectively, and the power transmission components of the two electrical connection assemblies are electrically connected to the two charging terminals respectively.

[0032] According to another exemplary embodiment of the present invention, the charging base assembly further comprises a mounting bracket suitable for being secured to the vehicle sheet metal, and the charging base housing is installed in the mounting bracket, such that the charging base can be secured to the vehicle sheet metal via the mounting bracket.

[0033] In the above exemplary embodiments of the present invention, to achieve electrical connection between the power transmission component and the charging terminal, it is only necessary to first insert the mating end of the housing of the electrical connection assembly into the mating port of the charging base housing, and then tighten the fastener of the electrical connection assembly, which greatly simplifies the connection operation between the electrical connection assembly and the charging base.

[0034] In addition, in some of the above exemplary embodiments of the present invention, the mating port on the charging base housing has a trumpet-shaped entrance that flares outward, which can absorb errors caused by deformation of the power transmission components of the electrical connection assembly, thereby guiding the mating end of the housing of the electrical connection assembly to be smoothly inserted into the mating port of the charging base housing, greatly simplifying the connection operation between the electrical connection assembly and the charging base.

[0035] In addition, in some of the above-described exemplary embodiments of the present invention, the fastener can be pre-installed in the housing of the electrical connection assembly and can be locked in the pre-installed position, thereby preventing the fastener from being removed from the housing. When the fastener needs to be screwed into the nut, the fastener is simply pushed toward the inside of the housing to unlock it from the pre-installed position. Therefore, the present invention can prevent the fastener from being lost and makes the fastener connection operation very convenient.

[0036] The above and other features of the present invention will become more apparent from the detailed description of illustrative embodiments thereof, which proceeds with reference to the accompanying drawings. [Brief explanation of the drawings]

[0037] [Figure 1] 1 is a diagrammatic perspective view of an electrical connection assembly according to an exemplary embodiment of the present invention; [Figure 2] 1 is a cross-sectional view of an electrical connection assembly according to an exemplary embodiment of the present invention, viewed from above. [Figure 3] 2 is a cross-sectional view of an electrical connection assembly according to an exemplary embodiment of the present invention, viewed from below. [Figure 4] 1 is an illustration of an exploded view of an electrical connection assembly according to an exemplary embodiment of the present invention. [Figure 5] FIG. 1 is a diagrammatic perspective view of a power transfer component of an electrical connection assembly according to an exemplary embodiment of the present invention. [Figure 6]FIG. 1 is an illustration of an exploded view of an electrical connection assembly and charging base according to an exemplary embodiment of the present invention. [Figure 7] FIG. 10 is an illustration of an electrical connection assembly and charging base according to an exemplary embodiment of the present invention, with the mating end of the electrical connection assembly inserted into the mating port of the charging base housing, but the fastener not yet connected to the nut inside the charging base housing. [Figure 8] 10 is an illustration of an electrical connection assembly and charging base according to an exemplary embodiment of the present invention, wherein a fastener on the electrical connection assembly is connected to a nut inside the charging base housing. FIG. [Figure 9] 10A-10C are illustrations of electrical connections between power transfer components of an electrical connection assembly and charging terminals of a charging base according to an exemplary embodiment of the present invention. [Figure 10] FIG. 1 is a diagrammatic perspective view of an electrical connection assembly and charging base according to an exemplary embodiment of the present invention, viewed from below. [Figure 11] FIG. 2 is a partial enlarged view of a charging base according to an exemplary embodiment of the present invention. [Figure 12] 1 is a cross-sectional view of an electrical connection assembly according to an exemplary embodiment of the present invention, with fasteners pre-installed in the housing and locked in the pre-installed position. [Figure 13] 1 is a diagrammatic perspective view of a fastener of an electrical connection assembly according to an exemplary embodiment of the present invention. [Figure 14] 1 is a diagrammatic perspective view of a housing of an electrical connection assembly according to an exemplary embodiment of the present invention; [Figure 15] 10 is a cross-sectional view of an electrical connection assembly according to another exemplary embodiment of the present invention, with fasteners pre-installed in the housing and locked in the pre-installed position. [Figure 16] 10 is a cross-sectional view of an electrical connection assembly according to another exemplary embodiment of the present invention, with a disassembly tool attached to a fastener. DETAILED DESCRIPTION OF THE INVENTION

[0038] Exemplary embodiments of the present disclosure are described in detail below with reference to the accompanying drawings. In the drawings, like reference numerals refer to like elements. However, the present disclosure may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the disclosure to those skilled in the art.

[0039] In the following detailed description, for purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of the disclosed embodiments. It will be apparent, however, that one or more embodiments may be practiced without these specific details. In other instances, well-known structures and devices are shown in schematic form to simplify the drawings.

[0040] In accordance with a general aspect of the present invention, an electrical connection assembly is provided, the electrical connection assembly including: a housing having a mating end suitable for insertion into a mating port of a charging base housing; a conductive terminal provided at the mating end of the housing for electrical contact with a charging terminal inside the charging base housing; a power transfer component, one end of the power transfer component extending into the housing; and a fastener provided on the housing and passing through the one end of the power transfer component and the conductive terminal. The fastener is configured to thread into a nut inside the charging base housing after the mating end of the housing is inserted into the mating port of the charging base housing to fasten the power transfer component, the conductive terminal, and the charging terminal together.

[0041] According to another general aspect of the present invention, there is provided a charging base assembly. The charging base assembly includes a charging base and the above-described electrical connection assembly. The charging base includes a charging base housing having a mating port formed therein, a charging terminal mounted on the charging base housing, and a nut mounted on the charging base housing. A mating end of the housing of the electrical connection assembly mates with the mating port of the charging base housing, and a fastener of the electrical connection assembly threads into the nut inside the charging base housing to fasten the power transfer component, the conductive terminal, and the charging terminal together.

[0042] In accordance with another general aspect of the present invention, there is provided a charging base housing including a mating port adapted to mate with a mating end of a housing of an electrical connection assembly, the mating port having an outwardly flared trumpet-shaped entrance and a cylindrical interior cavity, the trumpet-shaped entrance adapted to guide the mating end of the housing of the electrical connection assembly for insertion into the cylindrical interior cavity of the mating port.

[0043] According to another general aspect of the present invention, there is provided a charging base comprising the charging base housing as described above, a charging terminal provided on the charging base housing for electrical contact with a conductive terminal of an electrical connection assembly, and a nut provided on the charging base housing and secured to one end of the charging terminal, the nut being used for threaded connection with a fastener of the electrical connection assembly to fasten the charging terminal and the conductive terminal together.

[0044] According to another general aspect of the present invention, there is provided a charging base assembly. The charging base assembly includes the charging base described above and an electrical connection assembly. The electrical connection assembly includes a housing having a mating end suitable for insertion into a mating port of the charging base housing, a conductive terminal provided at the mating end of the housing for electrical contact with a charging terminal inside the charging base housing, a power transfer component, one end of the power transfer component extending into the housing, and a fastener provided on the housing and passing through the power transfer component and the conductive terminal. After the mating end of the housing is inserted into the mating port of the charging base housing, the fastener is threaded onto a nut inside the charging base housing to fasten the conductive terminal and the charging terminal together.

[0045] In accordance with another general aspect of the present invention, there is provided a fastener for fastening a power transfer component of an electrical connection assembly to a charging terminal of a charging base. The fastener is formed with a locking mechanism suitable for engaging with a housing of the electrical connection assembly. When the fastener is pre-installed in the housing, the locking mechanism engages with the housing to lock the fastener in the pre-installed position and prevent the fastener from disengaging from the housing.

[0046] According to another general aspect of the present invention, there is provided an electrical connection assembly comprising: a housing having a mating end adapted for insertion into a mating port of a charging base housing; a conductive terminal provided at the mating end of the housing for electrical contact with a charging terminal inside the charging base housing; a power transfer component, one end of the power transfer component extending into the housing; and a fastener provided on the housing and passing through the one end of the power transfer component and the conductive terminal, the fastener being adapted to threadably engage a nut inside the charging base housing to fasten the power transfer component, the conductive terminal, and the charging terminal together.

[0047] According to another general aspect of the present invention, there is provided a charging base assembly. The charging base assembly includes a charging base and the above-described electrical connection assembly. The charging base includes a charging base housing having a mating port formed therein, a charging terminal provided on the charging base housing, and a nut provided on the charging base housing. A mating end of the housing of the electrical connection assembly mates with the mating port of the charging base housing, and a fastener of the electrical connection assembly threads into the nut inside the charging base housing to fasten the power transfer component, the conductive terminal, and the charging terminal together.

[0048] Figure 1 shows an illustrative perspective view of an electrical connection assembly 1 according to an exemplary embodiment of the present invention. Figure 2 shows a cross-sectional view of an electrical connection assembly 1 according to an exemplary embodiment of the present invention, as viewed from above. Figure 3 shows a cross-sectional view of an electrical connection assembly 1 according to an exemplary embodiment of the present invention, as viewed from below. Figure 4 shows an illustrative exploded view of an electrical connection assembly 1 according to an exemplary embodiment of the present invention. Figure 5 shows an illustrative perspective view of power transfer component 15 of electrical connection assembly 1 according to an exemplary embodiment of the present invention. Figure 6 shows an illustrative exploded view of electrical connection assembly 1 and charging base 2 according to an exemplary embodiment of the present invention. Figure 7 shows an illustrative view of an exemplary embodiment of electrical connection assembly 1 and charging base 2 according to the present invention, where mating end 11 of electrical connection assembly 1 is inserted into mating port 21 of charging base housing 20, but fastener 14 has not yet been connected to nut 23 inside charging base housing 20. FIG. 8 shows an illustrative diagram of the electrical connection assembly 1 and charging base 2 according to an exemplary embodiment of the present invention, in which fastener 14 of electrical connection assembly 1 is connected to nut 23 inside charging base housing 20. FIG. 9 shows an illustrative diagram of the electrical connection between power transfer component 15 of electrical connection assembly 1 and charging terminal 22 of charging base 2 according to an exemplary embodiment of the present invention. FIG. 10 shows an illustrative perspective view of electrical connection assembly 1 and charging base 2 according to an exemplary embodiment of the present invention, as viewed from below. FIG. 11 shows an illustrative enlarged partial view of charging base 2 according to an exemplary embodiment of the present invention. FIG. 12 shows a cross-sectional view of an electrical connection assembly 1 according to an exemplary embodiment of the present invention, with fasteners 14 pre-installed in the housing 10 and locked in the pre-installed position. FIG. 13 shows a pictorial perspective view of fasteners 14 of the electrical connection assembly 1 according to an exemplary embodiment of the present invention. FIG. 14 shows a pictorial perspective view of the housing 10 of the electrical connection assembly 1 according to an exemplary embodiment of the present invention. FIG. 15 shows a cross-sectional view of an electrical connection assembly 1 according to another exemplary embodiment of the present invention, with fasteners 14 pre-installed in the housing 10 and locked in the pre-installed position. FIG. 16 shows a cross-sectional view of an electrical connection assembly 1 according to another exemplary embodiment of the present invention, with a disassembly tool 140 attached to the fasteners 14.

[0049] As shown in FIGS. 1-16 , in an exemplary embodiment of the present invention, an electrical connection assembly 1 is disclosed. The electrical connection assembly 1 includes a housing 10, a conductive terminal 13, a power transfer component 15, and a fastener 14. The housing 10 has a mating end 11 suitable for insertion into a mating port 21 in a charging base housing 20. The conductive terminal 13 is disposed at the mating end 11 of the housing 10 for electrical contact with a charging terminal 22 inside the charging base housing 20. One end of the power transfer component 15 extends into the housing 10. The fastener 14 is mounted to the housing 10 and passes through one end of the power transfer component 15 and the conductive terminal 13. The fastener 14 is adapted to threadably connect with a nut 23 inside the charging base housing 20 after the mating end 11 of the housing 10 is inserted into the mating port 21 of the charging base housing 20 to fasten the power transmission component 15, the conductive terminal 13, and the charging terminal 22 together.

[0050] As shown in Figures 1 to 16, in the illustrated embodiment, the housing 10 has a top wall and a bottom wall that are axially opposite the mating end 11, which is cylindrical and protrudes from the top wall of the housing 10.

[0051] As shown in Figures 1 to 16, in the illustrated embodiment, the electrical connection assembly further includes a sealing ring 11a that is attached to the mating end 11 and configured to be radially compressed between the outer peripheral surface of the mating end 11 and the inner peripheral surface of the mating port 21 to achieve sealing between the outer peripheral surface of the mating end 11 and the inner peripheral surface of the mating port 21.

[0052] As shown in FIGS. 1 to 16, in the illustrated embodiment, an annular sealing ring mounting groove is formed in the outer circumferential surface of the fitting end portion 11, and a sealing ring 11a is mounted in the sealing ring mounting groove.

[0053] 1-16, in the illustrated embodiment, the housing 10 also has a mounting end 12 axially opposite the mating end 11. The mounting end 12 is cylindrical and protrudes from the bottom wall of the housing 10. The mounting end 12 has a mounting port 102 that allows a fastener 14 to enter the housing 10.

[0054] As shown in FIGS. 1-16 , in the illustrated embodiment, fastener 14 is pre-installed in housing 10 via installation port 102, and locking structures are formed on installation end 12 and fastener 14 to lock fastener 14 in the pre-installed position and prevent fastener 14 from disengaging from housing 10.

[0055] 1-16, in the illustrated embodiment, the locking structure includes a resilient buckle 120 and an annular groove 14b. The resilient buckle 120 is formed in the installation port 102 of the installation end 12. The annular groove 14b is formed in the outer circumferential surface of one end of the fastener 14. The resilient buckle 120 includes a resilient arm 120a connected to the peripheral wall of the installation end 12 and a protrusion 120b formed on the end of the resilient arm 120a, the protrusion 120b being configured to engage with the annular groove 14b to lock the fastener 14 in a pre-installed position.

[0056] 1 to 16 , in the illustrated embodiment, fastener 14 includes bolt 141 and insulator 142. Bolt 141 is used for threaded connection with nut 23 inside charging base housing 20. Insulator 142 is attached to the end of bolt 141 to electrically isolate bolt 141 from a bolt manipulation tool used to manipulate bolt 141. Annular groove 14b is formed in the outer circumferential surface of insulator 142 of fastener 14.

[0057] 1 to 16, in the illustrated embodiment, bolt 141 has a threaded rod 141a disposed at one end and a flange portion 141b and a head portion 141c at the other end. Insulator 142 engages with flange portion 141b and head portion 141c of bolt 141. Threaded rod 141a of bolt 141 is used for threaded connection with nut 23, and flange portion 141b of bolt 141 is used to abut one end of power transmission component 15.

[0058] 1 to 16, in the illustrated embodiment, the insulator 142 has a joint 142c for engaging with a bolt operating tool. The joint 142c engages with a head 141c of the bolt 141, and the cross section of the joint 142c and the head 141c of the bolt 141 are non-circular.

[0059] 1 to 16, in the illustrated embodiment, the insulator 142 also has a cylindrical portion 142a and a bottom wall portion 142b connected between the bottom of the cylindrical portion 142a and the joint portion 142c, and the bottom wall portion 142b engages with the flange portion 141b of the bolt 141. The annular groove 14b is formed in the outer circumferential surface of the cylindrical portion 142a of the insulator 142.

[0060] As shown in Figures 1 to 16, in the illustrated embodiment, the electrical connection assembly 1 further includes a sealing ring 14a that is attached to the cylindrical portion 142a of the insulator 142 and is radially compressed between the outer peripheral surface of the cylindrical portion 142a and the inner peripheral surface of the installation end 12 to achieve a seal between the outer peripheral surface of the cylindrical portion 142a and the inner peripheral surface of the installation end 12.

[0061] As shown in FIGS. 1 to 16, in the illustrated embodiment, a sealing ring installation groove 14c is formed in the outer circumferential surface of the cylindrical portion 142a of the insulator 142, and the sealing ring 14a is installed in the sealing ring installation groove 14c.

[0062] As shown in FIGS. 1-16, in the illustrated embodiment, the insulator 142 is an injection molded part formed on the bolt 141 by cast injection molding, so that the bolt 141 and the insulator 142 are a single piece.

[0063] As shown in Figures 1 to 16, in the illustrated embodiment, one end of the conductive terminal 13 protrudes from the opening of the mating end 11, and a flat contact end surface 13a that is perpendicular to the axial direction of the conductive terminal 13 and is used for electrical contact with the charging terminal 22 is formed at one end of the conductive terminal 13.

[0064] As shown in Figures 1 to 16, in the illustrated embodiment, the electrical connection assembly 1 further includes a connection terminal 16 configured to be electrically connected to one end of the power transmission member 15 and to form electrical contact with an end face of the other end of the conductive terminal 13, in order to electrically connect one end of the power transmission member 15 to the conductive terminal 13.

[0065] 1 to 16, in the illustrated embodiment, a positioning flange 13b is formed on the other end of the conductive terminal 13, and a positioning step 10d is formed inside the housing 10. The positioning flange 13b is clamped between the connection terminal 16 and the positioning step 10d of the housing 10, thereby positioning the conductive terminal 13 at a predetermined installation position.

[0066] 1-16, in the illustrated embodiment, the power transfer component 15 includes a flat aluminum bus bar 15a and an outer insulating layer 15b wrapped around the aluminum bus bar 15a. One end of the aluminum bus bar 15a is exposed from the outer insulating layer 15b, and a connection terminal 16 is riveted or welded to one end of the aluminum bus bar 15a. Both the connection terminal 16 and the conductive terminal 13 are copper components.

[0067] 1 to 16, in the illustrated embodiment, through holes are formed in one end of the aluminum bus bar 15a, the connection terminal 16, and the conductive terminal 13, respectively, to allow the fastener 14 to pass through. The fastener 14 is used to fasten the connection terminal 16, the conductive terminal 13, and the charging terminal 22 to one another, ensuring reliable electrical contact between the connection terminal 16, the conductive terminal 13, and the charging terminal 22.

[0068] 1-16, in the illustrated embodiment, the housing 10 has a front end and a rear port 101 on opposite sides of its length, and one end of the power transfer component 15 is inserted into the housing 10 through the rear port 101. The length of the housing 10 is perpendicular to the axial direction of the mating end 11, which is located at a corner of the front end of the housing 10.

[0069] 1 to 16 , in the illustrated embodiment, the electrical connection assembly 1 further includes a sealing sleeve 18 that is attached to the outer insulating layer 15b at one end of the power transmission component 15 and inserted into the rear port 101 of the housing 10. The sealing sleeve 18 is compressed between the outer insulating layer 15b of the power transmission component 15 and the inner wall surface of the rear port 101 of the housing 10 to seal the rear port 101.

[0070] As shown in Figures 1 to 16, in the illustrated embodiment, the electrical connection assembly 1 further includes a rear end cover 17 that is attached to the outer insulating layer 15b at one end of the power transmission component 15 and fastened to the rear end of the housing 10 to secure the power transmission component 15 to the rear end of the housing 10.

[0071] 1 to 16, in the illustrated embodiment, the rear end cover 17 includes a front tubular portion 171, a rear tubular portion 172, and a connecting wall 173. The front tubular portion 171 is adapted to be attached to the rear end of the housing 10. The rear tubular portion 172 is adapted to be attached to the outer insulating layer 15b at one end of the power transmission component 15. The connecting wall 173 is connected between the rear end of the front tubular portion 171 and the front end of the rear tubular portion 172. A buckle 17c is formed on the front tubular portion 171, and a protrusion 10c is formed on the outer wall surface of the rear end of the housing 10, with the protrusion 10c engaging with a snap slot of the buckle 17c.

[0072] As shown in Figures 1 to 16, in the illustrated embodiment, a step portion 10b is formed in the rear port 101 of the housing 10, and the step portion 10b and the connecting wall 173 abut against the front end and rear end of the sealing sleeve 18, respectively, to position the sealing sleeve 18 in the rear port 101 of the housing 10.

[0073] As shown in FIGS. 1 to 16 , another exemplary embodiment of the present invention also discloses a charging base assembly. The charging base assembly includes a charging base 2 and an electrical connection assembly 1. The charging base 2 includes a charging base housing 20, charging terminals 22, and a nut 23. A mating port 21 is formed in the charging base housing 20. The charging terminals 22 are installed in the charging base housing 20. The nut 23 is provided on the charging base housing 20. A mating end 11 of the housing 10 of the electrical connection assembly 1 mates with the mating port 21 of the charging base housing 20. A fastener 14 of the electrical connection assembly 1 threads into the nut 23 inside the charging base housing 20 to fasten the power transfer component 15, the conductive terminals 13, and the charging terminals 22 together.

[0074] 1 to 16 , in the illustrated embodiment, the charging base 2 includes two charging terminals 22, the charging base housing 20 has two mating ports 21, and the charging base assembly includes two electrical connection assemblies 1. The mating ends 11 of the housings 10 of the two electrical connection assemblies are inserted into the two mating ports 21 of the charging base housing 20, respectively, and the power transmission components 15 of the two electrical connection assemblies are electrically connected to the two charging terminals 22, respectively.

[0075] 1-16 , in the illustrated embodiment, the charging base assembly further includes a mounting bracket 30 configured to be secured to a vehicle sheet metal. The charging base housing 20 is installed on the mounting bracket 30, allowing the charging base 2 to be secured to the vehicle sheet metal via the mounting bracket 30.

[0076] 1-16 , another exemplary embodiment of the present invention also discloses a charging base housing 20. The charging base housing 20 includes a mating port 21 that is used to mate with the mating end 11 of the housing 10 of the electrical connection assembly. The mating port 21 has an outwardly flared trumpet-shaped entrance 211 and a cylindrical interior cavity 212. The trumpet-shaped entrance 211 is used to guide the mating end 11 of the housing 10 of the electrical connection assembly 1 for insertion into the cylindrical interior cavity 212 of the mating port 21.

[0077] 1 to 16, in the illustrated embodiment, inclined guide surfaces 21a, 21b are formed on the inner surface of trumpet-shaped entrance 211. In order to guide mating end 11 of housing 10 of electrical connection assembly 1 for insertion into cylindrical internal cavity 212 of mating port 21, inclined guide surfaces 21a, 21b are inclined at a predetermined angle with respect to the axial direction of mating port 21.

[0078] 1 to 16, in the illustrated embodiment, a first guide inclined surface 21a and a second guide inclined surface 21b are formed on the inner surface of a trumpet-shaped inlet 211. The first guide inclined surface 21a extends inward from an outer end surface 21d of the mating port 21, and the second guide inclined surface 21b is disposed between the first guide inclined surface 21a and an inner peripheral surface 21c of the cylindrical internal cavity 212. The first guide inclined surface 21a is inclined at a first angle with respect to the axial direction of the mating port 21, and the second guide inclined surface 21b is inclined at a second angle with respect to the axial direction of the mating port 21, the first angle being smaller than the second angle.

[0079] As shown in Figures 1 to 16, in the illustrated embodiment, first transition surfaces 21f, 21e are also formed on the inner surface of the trumpet-shaped inlet 211, and the first transition surfaces 21f, 21e are connected between the first guide inclined surface 21a and the second guide inclined surface 21b.

[0080] 1 to 16, in the illustrated embodiment, the first transition surfaces 21f, 21e include a cylindrical transition surface 21f and an arcuate transition surface 21e. The cylindrical transition surface 21f extends inward from the first inclined guide surface 21a along the axial direction of the mating port 21. The arcuate transition surface 21e is connected between the cylindrical transition surface 21f and the second inclined guide surface 21b.

[0081] As shown in Figures 1 to 16, in the illustrated embodiment, a second transition surface 21g connected between the second guide inclined surface 21b and the inner peripheral surface 21c of the cylindrical internal cavity 212 is also formed on the inner surface of the trumpet-shaped inlet 211, and the second transition surface 21g is an arc-shaped transition surface.

[0082] As shown in Figures 1 to 16, in the illustrated embodiment, the inner diameter of the cylindrical internal cavity 212 of the mating port 21 is equal to the outer diameter of the mating end 11 of the housing 10 and is smaller than the outer diameter of the sealing ring 11a attached to the mating end 11, thereby radially compressing the sealing ring 11a between the inner circumferential surface 21c of the cylindrical internal cavity 212 of the mating port 21 and the outer circumferential surface of the mating end 11.

[0083] 1 to 16, in the illustrated embodiment, an annular step 213 is formed inside the fitting port 21. The annular step 213 is used to axially position the fitting end 11 of the housing 10 by abutting against the end face of the fitting end 11 of the housing 10.

[0084] 1 to 16 , another exemplary embodiment of the present invention also discloses a charging base 2. The charging base 2 includes a charging base housing 20, a charging terminal 22, and a nut 23. The charging terminal 22 is installed in the charging base housing 20 for electrical contact with the conductive terminal 13 of the electrical connection assembly 1. The nut 23 is provided on the charging base housing 20 and fixed to one end of the charging terminal 22. The nut 23 is used to threadably connect with the fastener 14 of the electrical connection assembly 1 to fasten the charging terminal 22 and the conductive terminal 13 together.

[0085] 1 to 16 , in the illustrated embodiment, the charging base 2 further includes a terminal holder 24 that is installed in the charging base housing 20 to hold the charging terminal 22. One end of the nut 23 is riveted or welded to one end of the charging terminal 22, and the other end of the nut 23 is pressed against the terminal holder 24.

[0086] As shown in Figures 1 to 16, in the illustrated embodiment, a through hole is formed in one end of the charging terminal 22 and communicates with a threaded hole in the nut 23, allowing the fastener 14 to be threaded into the nut 23 through the one end of the charging terminal 22.

[0087] 1 to 16, in the illustrated embodiment, one end 221 of the charging terminal 22 is flat and suitable for electrical contact with the end face of the conductive terminal 13. The other end 222 of the charging terminal 22 is hollow and cylindrical and suitable for fitting with the charging terminal of a charging gun.

[0088] As shown in FIGS. 1-16 , another exemplary embodiment of the present invention also discloses a charging base assembly. The charging base assembly includes a charging base 2 and an electrical connection assembly 1. The electrical connection assembly 1 includes a housing 10, a conductive terminal 13, a power transfer component 15, and a fastener 14. The housing 10 has a mating end 11 suitable for insertion into a mating port 21 of a charging base housing 20. The conductive terminal 13 is disposed at the mating end 11 of the housing 10 for electrical contact with a charging terminal 22 inside the charging base housing 20. One end of the power transfer component 15 extends into the housing 10. The fastener 14 is mounted to the housing 10 and passes through the power transfer component 15 and the conductive terminal 13. After the mating end 11 of the housing 10 is inserted into the mating port 21 of the charging base housing 20, the fastener 14 is threaded into a nut 23 inside the charging base housing 20 to fasten the conductive terminal 13 and the charging terminal 22 together.

[0089] 1 to 16 , in the illustrated embodiment, the charging base 2 includes two charging terminals 22, the charging base housing 20 has two mating ports 21, and the charging base assembly includes two electrical connection assemblies 1. The mating ends 11 of the housings 10 of the two electrical connection assemblies 1 are inserted into the two mating ports 21 of the charging base housing 20, respectively, and the power transmission components 15 of the two electrical connection assemblies 1 are electrically connected to the two charging terminals 22, respectively.

[0090] As shown in Figures 1 to 16, in the illustrated embodiment, the electrical connection assembly 1 further includes a sealing ring 11a attached to the mating end 11 and configured to be radially compressed between the outer peripheral surface of the mating end 11 and the inner peripheral surface of the cylindrical internal cavity 212 of the mating port 21 to achieve a seal between the outer peripheral surface of the mating end 11 and the inner peripheral surface of the cylindrical internal cavity 212 of the mating port 21.

[0091] As shown in FIGS. 1 to 16, in the illustrated embodiment, an annular sealing ring mounting groove is formed in the outer circumferential surface of the fitting end portion 11, and a sealing ring 11a is mounted in the sealing ring mounting groove.

[0092] 1-16 , in the illustrated embodiment, the charging base assembly further includes a mounting bracket 30 configured to be secured to a vehicle sheet metal. The charging base housing 20 is installed on the mounting bracket 30, allowing the charging base 2 to be secured to the vehicle sheet metal via the mounting bracket 30.

[0093] 1-16 , another exemplary embodiment of the present invention also discloses a fastener 14. The fastener 14 is used to fasten the power transmission component 15 of the electrical connection assembly 1 to the charging terminal 22 of the charging base 2. The fastener 14 is formed with a locking mechanism suitable for engaging with the housing 10 of the electrical connection assembly 1. When the fastener 14 is pre-installed in the housing 10, the locking mechanism engages with the housing 10 and locks the fastener 14 in the pre-installed position, preventing the fastener 14 from disengaging from the housing 10.

[0094] As shown in Figures 1 to 16, in the illustrated embodiment, an engagement mechanism suitable for engagement with a disassembly tool 140 is formed on one end of the fastener 14, so that the fastener 14 previously installed on the housing 10 can be pulled out of the housing 10 by the disassembly tool 140 engaged with the fastener 14.

[0095] As shown in FIGS. 1-16, in the illustrated embodiment, the locking mechanism includes an annular groove 14b formed in one end of the fastener 14 that is configured to engage with a resilient buckle 120 inside the housing 10.

[0096] As shown in FIGS. 1-16, in the illustrated embodiment, the engagement mechanism includes a slotted hole 104 formed in one end of the fastener 14 that is configured to engage with a pin 140b on the disassembly tool 140.

[0097] 1 to 16 , in the illustrated embodiment, fastener 14 includes bolt 141 and insulator 142. Bolt 141 is used for threaded connection with nut 23 inside charging base 2. Insulator 142 is attached to the end of bolt 141 to electrically isolate bolt 141 from a bolt manipulation tool used to manipulate bolt 141. Annular groove 14b is formed on the outer circumferential surface of insulator 142 of fastener 14, and slot hole 104 is formed in insulator 142 of fastener 14.

[0098] 1 to 16, in the illustrated embodiment, bolt 141 has a threaded rod 141a disposed at one end and a flange portion 141b and a head portion 141c at the other end. Insulator 142 engages with flange portion 141b and head portion 141c of bolt 141. Threaded rod 141a of bolt 141 is used for threaded connection with nut 23, and flange portion 141b of bolt 141 is used to abut one end of power transmission component 15.

[0099] 1 to 16, in the illustrated embodiment, the insulator 142 has a joint 142c for engaging with a bolt operating tool. The joint 142c engages with a head 141c of the bolt 141, and the cross section of the joint 142c and the head 141c of the bolt 141 are non-circular.

[0100] 1 to 16, in the illustrated embodiment, the insulator 142 also has a cylindrical portion 142a and a bottom wall portion 142b connected between the bottom of the cylindrical portion 142a and the joint portion 142c, and the bottom wall portion 142b engages with the flange portion 141b of the bolt 141. The annular groove 14b is formed in the outer circumferential surface of the cylindrical portion 142a of the insulator 142, and the slot hole 104 is formed in the cylindrical portion 142a of the insulator 142.

[0101] As shown in Figures 1 to 16, in the illustrated embodiment, a pair of slotted holes 104 are formed in the cylindrical portion 142a of the insulator 142, which are diametrically opposed to each other and are used to engage with a pair of pins 140b on the disassembly tool 140.

[0102] As shown in Figures 1 to 16, in the illustrated embodiment, a sealing ring mounting groove 14c for mounting the sealing ring 14a is also formed on the outer peripheral surface of the cylindrical portion 142a of the insulator 142, thereby realizing sealing between the fastener 14 and the housing 10 by the sealing ring 14a mounted in the sealing ring mounting groove 14c.

[0103] As shown in FIGS. 1 to 16 , in the illustrated embodiment, fastener 14 further includes sealing ring 14a that is configured to be installed in sealing ring installation groove 14c of cylindrical portion 142a and to be radially compressed between the outer circumferential surface of cylindrical portion 142a and the inner circumferential surface of installation end 12 of housing 20 to achieve a seal between the outer circumferential surface of cylindrical portion 142a and the inner circumferential surface of installation end 12 of housing 20.

[0104] As shown in FIGS. 1-16, in the illustrated embodiment, the insulator 142 is an injection molded part formed on the bolt 141 by cast injection molding, so that the bolt 141 and the insulator 142 are a single piece.

[0105] As shown in FIGS. 1-16 , another exemplary embodiment of the present invention also discloses an electrical connection assembly 1. The electrical connection assembly 1 includes a housing 10, a conductive terminal 13, a power transmission component 15, and the above-described fastener 14. The housing 10 has a mating end 11 suitable for insertion into a mating port 21 of a charging base housing 20. The conductive terminal 13 is disposed at the mating end 11 of the housing 10 for electrical contact with a charging terminal 22 inside the charging base housing 20. One end of the power transmission component 15 extends into the housing 10. The fastener 14 is mounted on the housing 10 and passes through one end of the power transmission component 15 and the conductive terminal 13. The fastener 14 is adapted to threadably engage with a nut 23 inside the charging base housing 20 to fasten the power transmission component 15, the conductive terminal 13, and the charging terminal 22 together.

[0106] As shown in Figures 1 to 16, in the illustrated embodiment, the electrical connection assembly 1 further includes a sealing ring 11a that is attached to the mating end 11 and configured to be radially compressed between the outer peripheral surface of the mating end 11 and the inner peripheral surface of the mating port 21 to achieve sealing between the outer peripheral surface of the mating end 11 and the inner peripheral surface of the mating port 21.

[0107] 1-16 , in the illustrated embodiment, the housing 10 also has a mounting end 12 axially opposite the mating end 11, the mounting end 12 having a mounting port 102 that allows a fastener 14 to enter the housing 10. The fastener 14 is pre-installed in the housing 10 through the mounting port 102 and locked in the pre-installed position to prevent the fastener 14 from being removed from the housing 10.

[0108] 1-16, in the illustrated embodiment, an elastic buckle 120 is formed in the installation port 102 of the installation end 12. The elastic buckle 120 includes an elastic arm 120a connected to the peripheral wall of the installation end 12 and a protrusion 120b formed on the end of the elastic arm 120a. The protrusion 120b of the elastic buckle 120 is configured to engage with an annular groove 14b in the fastener 14 to lock the fastener 14 in a pre-installed position.

[0109] As shown in Figures 1 to 16, in the illustrated embodiment, a pair of elastic buckles 120 are formed in the installation port 102 of the installation end 12, and the pair of elastic buckles 120 are located on radially opposite sides of the installation port 102.

[0110] As shown in FIGS. 1 to 16 , another exemplary embodiment of the present invention also discloses a charging base assembly. The charging base assembly includes a charging base 2 and the above-described electrical connection assembly 1. The charging base 2 includes a charging base housing 20, a charging terminal 22, and a nut 23. A mating port 21 is formed in the charging base housing 20. The charging terminal 22 is installed in the charging base housing 20. The nut 23 is installed in the charging base housing 20. The mating end 11 of the housing 10 of the electrical connection assembly 1 fits into the mating port 21 of the charging base housing 20. The fastener 14 of the electrical connection assembly 1 threads into the nut 23 inside the charging base housing 20 to fasten the power transfer component 15, the conductive terminal 13, and the charging terminal 22 together.

[0111] 1 to 16 , in the illustrated embodiment, the charging base 2 includes two charging terminals 22, the charging base housing 20 has two mating ports 21, and the charging base assembly includes two electrical connection assemblies 1. The mating ends 11 of the housings 10 of the two electrical connection assemblies are inserted into the two mating ports 21 of the charging base housing 20, respectively, and the power transmission components 15 of the two electrical connection assemblies are electrically connected to the two charging terminals 22, respectively.

[0112] 1-16 , in the illustrated embodiment, the charging base assembly further includes a mounting bracket 30 configured to be secured to a vehicle sheet metal (not shown). The charging base housing 20 is installed on the mounting bracket 30, allowing the charging base 2 to be secured to the vehicle sheet metal via the mounting bracket 30.

[0113] It should be understood by those skilled in the art that the above embodiments are illustrative and not restrictive. For example, those skilled in the art can make many modifications to the above embodiments without any contradiction in structure or principle, and can freely combine various features described in different embodiments with each other.

[0114] While several exemplary embodiments have been shown and described, it will be apparent to those skilled in the art that various changes or modifications can be made to these embodiments without departing from the principles and spirit of the present disclosure, the scope of which is defined by the following claims and their equivalents.

[0115] As used herein, elements described in the singular and preceded by the word "a" or "an" should be understood as not excluding a plurality of said elements or steps, unless such exclusion is expressly stated. Furthermore, references to "one embodiment" of the invention are not intended to be interpreted as excluding the existence of additional embodiments that also incorporate the recited features. Furthermore, unless expressly stated otherwise, embodiments "comprising" or "having" an element or elements having a particular characteristic may include additional such elements that do not have that characteristic.

Claims

1. 1. An electrical connection assembly comprising: - a housing (10) having a mating end (11) suitable for insertion into a mating port (21) of a charging base housing (20); - a conductive terminal (13) provided at the mating end (11) of the housing (10) for electrical contact with a charging terminal (22) inside the charging base housing (20); a power transmission component (15), one end of said power transmission component (15) extending into said housing (10); a fastener (14) provided on the housing (10) and passing through one end of the power transmission component (15) and the conductive terminal (13); Equipped with The fastener (14) is configured to be threaded onto a nut (23) inside the charging base housing (20) after the mating end (11) of the housing (10) is inserted into the mating port (21) of the charging base housing (20), thereby fastening the power transmission component (15), the conductive terminal (13), and the charging terminal (22) together. Electrical connection assembly.

2. The housing (10) has a top wall and a bottom wall axially opposite the mating end (11), the mating end (11) being cylindrical and protruding from the top wall of the housing (10). The electrical connection assembly of claim 1 .

3. a sealing ring (11a) attached to the mating end (11) and configured to be radially compressed between an outer peripheral surface of the mating end (11) and an inner peripheral surface of the mating port (21) to achieve sealing between the outer peripheral surface of the mating end (11) and the inner peripheral surface of the mating port (21); The electrical connection assembly of claim 2 further comprising:

4. An annular sealing ring installation groove is formed on the outer circumferential surface of the fitting end portion (11), and the sealing ring (11a) is installed in the sealing ring installation groove.

4. The electrical connection assembly of claim 3.

5. The housing (10) also has an installation end (12) axially opposite the mating end (11), the installation end (12) being cylindrical and protruding from the bottom wall of the housing (10), the installation end (12) having an installation port (102) that allows the fastener (14) to enter the housing (10).

3. The electrical connection assembly of claim 2.

6. The fastener (14) is pre-installed in the housing (10) through the installation port (102), and a locking structure is formed on the installation end (12) and the fastener (14) to lock the fastener (14) in a pre-installed position and prevent the fastener (14) from disengaging from the housing (10).

6. The electrical connection assembly of claim 5.

7. The locking structure includes: an elastic buckle (120) formed at the installation port (102) of the installation end (12); An annular groove (14b) formed on the outer peripheral surface of one end of the fastener (14); Equipped with The elastic buckle (120) comprises an elastic arm (120) connected to the peripheral wall of the installation end (12) and a protrusion (120b) formed at the end of the elastic arm (120b), the protrusion (120b) being configured to engage with the annular groove (14b) to lock the fastener (14) in the pre-installed position.

7. The electrical connection assembly of claim 6.

8. The fastener (14) is a bolt (141) used for threaded connection with a nut (23) inside the charging base housing (20); an insulator (142) attached to an end of the bolt (141) to electrically isolate the bolt (141) from a bolt manipulation tool for manipulating the bolt (141); Equipped with The annular groove (14b) is formed on the outer peripheral surface of the insulator (142) of the fastener (14).

8. The electrical connection assembly of claim 7.

9. The bolt (141) has a threaded rod (141a) disposed at one end and a flange portion (141b) and a head portion (141c) at the other end, and the insulator (142) engages with the flange portion (141b) and the head portion (141c) of the bolt (141); The threaded rod (141a) of the bolt (141) is used for threaded connection with the nut (23), and the flange portion (141b) of the bolt (141) is used to abut one end of the power transmission component (15).

9. The electrical connection assembly of claim 8.

10. The insulator (142) has a joint (142c) for engaging with a bolt operating tool, the joint (142c) engages with the head (141c) of the bolt (141), and the cross section of the joint (142c) and the head (141c) of the bolt (141) are non-circular.

10. The electrical connection assembly of claim 9.

11. The insulator (142) also has a cylindrical portion (142a) and a bottom wall portion (142b) connected between the bottom of the cylindrical portion (142a) and the joint portion (142c), the bottom wall portion (142b) engages with the flange portion (141b) of the bolt (141), and the annular groove (14b) is formed on the outer circumferential surface of the cylindrical portion (142a) of the insulator (142). The electrical connection assembly of claim 10.

12. a sealing ring (14a) attached to the cylindrical portion (142a) of the insulator (142) and radially compressed between the outer circumferential surface of the cylindrical portion (142a) and the inner circumferential surface of the installation end (12) to provide a seal between the outer circumferential surface of the cylindrical portion (142a) and the inner circumferential surface of the installation end (12); The electrical connection assembly of claim 11 further comprising:

13. a sealing ring installation groove (14c) is formed on the outer circumferential surface of the cylindrical portion (142a) of the insulator (142), and the sealing ring (14a) is installed in the sealing ring installation groove (14c); 13. The electrical connection assembly of claim 12.

14. The insulator (142) is an injection molded part formed on the bolt (141) by cast injection molding, so that the bolt (141) and the insulator (142) are one piece.

9. The electrical connection assembly of claim 8.

15. One end of the conductive terminal (13) protrudes from the opening of the mating end (11), and a flat contact end surface (13a) is formed on the one end of the conductive terminal (13), the contact end surface (13a) is perpendicular to the axial direction of the conductive terminal (13), and is used for electrical contact with the charging terminal (22). The electrical connection assembly of claim 1 .

16. a connection terminal (16) electrically connected to one end of the power transmission component (15) and configured to form electrical contact with an end face of the other end of the conductive terminal (13) in order to electrically connect one end of the power transmission component (15) to the conductive terminal (13); 16. The electrical connection assembly of claim 15, further comprising:

17. A positioning flange (13b) is formed on the other end of the conductive terminal (13), and a positioning step (10d) is formed inside the housing (10), and the positioning flange (13b) is clamped between the connection terminal (16) and the positioning step (10d) of the housing (10) to position the conductive terminal (13) at a predetermined installation position.

17. The electrical connection assembly of claim 16.

18. The power transmission component (15) comprises a flat aluminum busbar (15a) and an outer insulating layer (15b) wrapped around the aluminum busbar (15a), one end of the aluminum busbar (15a) is exposed from the outer insulating layer (15b), the connection terminal (16) is riveted or welded to one end of the aluminum busbar (15a), and both the connection terminal (16) and the conductive terminal (13) are copper components.

17. The electrical connection assembly of claim 16.

19. Through holes are formed in one end of the aluminum bus bar (15a), the connection terminal (16), and the conductive terminal (13), respectively, to allow the fasteners (14) to pass through, and the fasteners (14) are used to fasten the connection terminals (16), the conductive terminals (13), and the charging terminals (22) together, ensuring reliable electrical contact between the connection terminals (16), the conductive terminals (13), and the charging terminals (22).

20. The electrical connection assembly of claim 18.

20. the housing (10) has a front end and a rear port (101) on opposite sides of the longitudinal direction of the housing (10), one end of the power transfer component (15) being inserted into the housing (10) through the rear port (101); The longitudinal direction of the housing (10) is perpendicular to the axial direction of the mating end (11), and the mating end (11) is disposed at a corner of the front end of the housing (10).

3. The electrical connection assembly of claim 2.

21. a sealing sleeve (18) attached to the outer insulating layer (15b) at one end of the power transfer component (15) and inserted into the rear port (101) of the housing (10); Furthermore, the sealing sleeve (18) is compressed between the outer insulating layer (15b) of the power transfer component (15) and the inner wall surface of the rear port (101) of the housing (10) to seal the rear port (101); 21. The electrical connection assembly of claim 20.

22. a rear end cover (17) attached to the outer insulating layer (15b) at one end of the power transmission component (15) and fastened to the rear end of the housing (10), used to secure the power transmission component (15) to the rear end of the housing (10); 22. The electrical connection assembly of claim 21, further comprising:

23. The rear end cover (17) is a front tubular portion (171) adapted to be mounted on the rear end of the housing (10); a tubular rear portion (172) adapted to be attached to the outer insulating layer (15b) at one end of the power transfer component (15); a connecting wall (173) connected between the rear end of the front tubular portion (171) and the front end of the rear tubular portion (172); Equipped with A buckle (17c) is formed on the front tubular portion (171), and a protrusion (10c) is formed on the outer wall surface of the rear end of the housing (10), and the protrusion (10c) engages with a snap slot of the buckle (17c).

23. The electrical connection assembly of claim 22.

24. a stepped portion (10b) is formed in the rear port (101) of the housing (10), and the stepped portion (10b) and the connecting wall (173) abut against the front end and rear end of the sealing sleeve (18), respectively, to position the sealing sleeve (18) in the rear port (101) of the housing (10); 24. The electrical connection assembly of claim 23.

25. 1. A charging base assembly, comprising: A charging base (2), a charging base housing (20) having a mating port (21) formed therein; A charging terminal (22) installed in the charging base housing (20); and A nut (23) installed on the charging base housing (20) a charging base (2) including The electrical connection assembly (1) according to any one of claims 1 to 24, Equipped with The mating end (11) of the housing (10) of the electrical connection assembly (1) fits into the mating port (21) of the charging base housing (20), and the fastener (14) of the electrical connection assembly (1) is threaded into the nut (23) inside the charging base housing (20) to fasten the power transmission component (15), the conductive terminal (13), and the charging terminal (22) together. Charging base assembly.

26. The charging base (2) comprises two charging terminals (22), the charging base housing (20) has two mating ports (21), and the charging base assembly comprises two electrical connection assemblies (1); the mating ends (11) of the housings (10) of the two electrical connection assemblies are inserted into the two mating ports (21) of the charging base housing (20), respectively, and the power transmission components (15) of the two electrical connection assemblies are electrically connected to the two charging terminals (22), respectively; 26. The charging base assembly of claim 25.

27. Mounting bracket (30) suitable for fastening to vehicle sheet metal Furthermore, The charging base housing (20) is installed on the mounting bracket (30), so that the charging base (2) can be fixed to the vehicle sheet metal via the mounting bracket (30).

26. The charging base assembly of claim 25.

Images