Abstract
The invention relates to a charging cable plug connector which comprises at least one or more connecting elements. The connecting element is bimetallic.
Claims
1-41. (canceled)
42. Charging cable plug connector for high voltage applications, comprising: at least one connecting element, wherein the connecting element has a first region made of a first metal material extending from a first end face to a central region and a second region of second metal material extending from a second end face to the central region, wherein the first metal material is different from the second metal material, and the first metal material comprises aluminum or an aluminum alloy and the second metal material comprises copper or a copper alloy, or the second metal material comprises aluminum or an aluminum alloy and the first metal material comprises copper or a copper alloy.
43. Charging cable plug connector according to claim 42, wherein the cross section of the first region of at least one of the connecting elements is at least larger at least in regions than the cross section of the second region of the connecting element.
44. Charging cable plug connector according to claim 42 wherein the first region of at least one of the connecting elements has at least one cooling fin or a plurality of cooling fins, wherein the cooling fins run in particular parallel to the longitudinal axis of the connecting element and preferably the cooling fins extend in the longitudinal direction of the connecting element substantially along the entire length of the first region, and/or the cooling fins are arranged circumferentially around the cross section of the first region.
45. Charging cable plug connector according to claim 44 wherein the cooling fins of at least one of the connecting elements differ from one another in their length perpendicular to the longitudinal axis of the connecting element, in particular such that the first region has an asymmetrical, in particular rotationally asymmetrical, axially asymmetrical and/or point-asymmetrical cross section.
46. Charging cable plug connector according to claim 42, wherein the connecting element has on its first end face a first fastening means, in particular a first recess, in particular a first recess tapering towards the central region and/or a first recess with a thread.
47. Charging cable plug connector according to claim 42, wherein the second region of at least one of the connecting elements has a smaller cross section than the first region at least in some regions or entirely.
48. Charging cable plug connector according to claim 42, wherein the central axis of the second region of at least one of the connecting elements is arranged eccentrically to the central axis of the first region of the connecting element.
49. Charging cable plug connector according to claim 46, wherein the first recess is arranged in the first end face of the connecting element eccentrically to the central axis of the first region of the at least one connecting element.
50. Charging cable plug connector according to claim 42, wherein the second region of at least one of the connecting elements is shaped as a pin and/or the second region of the connecting element is at least partially cylindrical in shape or the second region of at least one of the connecting elements is shaped as a socket, in particular as a sleeve with a base.
51. Charging cable plug connector according to claim 42, wherein the at least one connecting element comprises at least two connecting elements, and wherein the at least two connecting elements are preferably fixed relative to one another in a housing and the at least two connecting elements are arranged relative to one another in the plug connector in such a way that their respective longitudinal axes are aligned substantially parallel to one another, in particular so that the at least two connecting elements are fixed in the housing accordingly.
52. Charging cable plug connector according to claim 42, wherein the first region of at least one of the connecting elements and/or both connecting elements has at least one or more cooling fins, wherein the cooling fins on a side of the connecting element facing away from the other connecting element are more numerous, longer and/or have a higher volume than on a side of the connecting element facing the other connecting element.
53. Charging cable plug connector according to claim 51, wherein the housing at least partially encloses the lateral surface of the first region of the first connecting element and the lateral surface of the first region of the second connecting element.
54. Method for producing a connecting element for a charging cable plug connector of claim 42, comprising the steps of providing a first region made of a first metal material, wherein the first region was previously obtained by means of extrusion and/or was cut to length, providing a second region made of a second metal material, wherein the second region was previously obtained in particular by means of casting, deep drawing and/or cold extrusion, materially bonding, in particular welding, an end face of the first region to an end face of the second region.
55. A charging socket having a front side and a rear side facing away from the front side, comprising: a charging socket receptacle for a charging plug, arranged on the front side, a charging cable plug connector according to claim 42, arranged at least partially within the receptacle and extending from the front side to the rear side, wherein the first region extends from the rear side in the direction of the charging socket receptacle and the second region extends into the charging socket receptacle.
56. A system comprising: a charging socket according to claim 55, wherein the charging cable plug connector is connected to the charging socket with a positive and/or non-positive connection, and/or the second region of at least one of the connecting elements of the charging cable plug connector is arranged at least partially in the receptacle of the charging socket, and/or the first end face of at least one of the connecting elements protrudes from the charging socket along the longitudinal direction of the connecting element.
Description
[0175] The subject matter is explained in more detail below with the aid of a drawing showing an embodiment. In the drawing:
[0176] FIG. 1a, b show an isometric view from two angles of a charging socket with charging cable plug connector according to an exemplary embodiment;
[0177] FIG. 2 shows a lateral sectional view of a charging socket with charging cable plug connector according to an exemplary embodiment;
[0178] FIG. 3a-e show various connecting elements and charging cable plug connectors according to the invention according to exemplary embodiments;
[0179] FIG. 4 shows an isometric view of a connecting element according to the invention according to an exemplary embodiment;
[0180] FIG. 5 shows the charging cable plug connector according to the invention according to an exemplary embodiment;
[0181] FIG. 6a-c show sectional views of connecting elements according to the invention according to exemplary embodiments;
[0182] FIG. 7a-c show schematic representations of the two sides of the cross section of the first region of a connecting element according to the invention according to an exemplary embodiment, and an example of a definition of the cooling fins.
[0183] FIG. 1a shows a charging socket 400. It comprises a receptacle 410. A charging cable plug connector 300 with two connecting elements 100 and a housing 200 is arranged in the charging socket 400. The housing 200 can be cross-sectionally adapted to the plug connector receptacle 412. The housing 200 of the charging cable plug connector 300 can rest against the charging socket 400 and, in particular, be connected thereto. For example, these two elements can be connected to one another in a force-fit and/or form-fit manner. For example, screws as shown can hold the charging cable plug connector 300 to the charging socket 400. The second region 120 of the connecting elements 100 protrudes into the receptacle 410. The receptacle 410 can serve to connect a charging plug, with at least one of the plug-in pins 100 serving as a contact pin for the charging plug.
[0184] The charging cable plug connector 300 can protrude from the housing of the charging socket, as shown as an example in FIG. 1b. For example, this can be realized by means of a collar 420.
[0185] FIG. 2 shows a charging socket 400 of the invention with a charging cable plug connector 300 in a sectional view along the sectional line III in FIG. 1a. Two connecting elements 100, 100 can be seen. The plug-in pins have a second region 120, a first region 110, a recess 130, as well as a front 122, a rear 112 and a further 114 front face.
[0186] A blind hole 132 is arranged in the recess 130. A thickening can be seen on the second region 120 in the transition to the first region 110 of the connecting element 100. This thickening is shown in two stages with a first raised cross-section and a second raised cross-section. In particular, the first increased cross-section is larger than the cross-section of the remaining second region 120 in the plug-in direction, and the second increased cross-section is larger than the first increased cross-section, and thus also higher than the cross-section of the remaining second region 120 in the plug-in direction. A groove 129 is arranged around the second region 120 in the transition between the second region 120 and the first region 110. The groove can accommodate a sealing ring, for example.
[0187] The receptacle 410 of the charging socket 400 can also have a rear wall 430. The connecting elements 100, 100 can be passed through said rear wall. For example, as shown, the sealing ring can be arranged around the second region 120 between the connecting element 100, 100 and the charging socket 400, in particular the base 430 of the receptacle 410 of the charging socket, in particular in an interference fit.
[0188] FIG. 3 shows various embodiments of the connecting elements 100, 100 according to the invention in single and double versions. In the sectional views shown, the cross section of the first region 110 is shown.
[0189] FIG. 3a shows connecting elements 100, 100 which have a star-shaped, rotationally symmetrical cross section of the first region 110. These are surrounded by a housing 200. The envelopes 160, 160 are shown with dashed lines. As can be seen, the outline of the cross section of the two connecting elements 100, 100 is longer than the outline of the envelope 160, 160. The cross section is therefore at least partially concave. The respective cooling fins 170 are substantially triangular in shape and taper in particular towards their end pointing away from the connecting element 100, 100.
[0190] It can also be seen that the housing 200 is arranged in the gaps between the cooling fins 170for example, the housing 200 may have penetrated into the gaps.
[0191] FIG. 3b shows an alternative cross section in which the cross section of the connecting elements 100, 100 is not symmetrical. In the case shown, this is due to the different lengths of the cooling fins 170. In the arrangement of two connecting elements 100, 100, the cooling fins on the side of the connecting element 100, 100, which face the other connecting element 100, 100, are shorter than the remaining cooling fins 170. In this way, a directionality of the heat dissipation from the connecting element 100, 100 into the environment can be ensured. In particular, the heat can be conducted away from the other connecting element 100, 100.
[0192] FIG. 3c shows a further cross-sectional design of the connecting elements 100, 100. In this case, the cooling fins 170 are arranged only in a subregion of the circumference of the connecting elements 100, 100. In the present case, the circular arc along which the first region 110 is equipped with cooling fins 170 measures approximately 180. In the arrangement with two connecting elements 100, 100, the sides without cooling fins face the other connecting element 100, 100.
[0193] FIG. 3d shows a further embodiment of the cross section of the connecting elements 100, 100. The cooling fins 170 are tapered at their end pointing away from the relevant connecting element 100, 100. Cooling fins are also located along the entire circumference of the respective connecting elements 100, 100. In this case, no side of a connecting element 100, 100 is free of cooling fins, as is the case, for example, in the embodiment shown in FIG. 3c. The cooling fins 170 vary in their length and are shorter in particular on the side of the relevant connecting element 100, 100 which faces the other connecting element 100, 100 than on the side facing away from the other connecting element 100, 100.
[0194] FIG. 3e shows a further profile in which the cooling fins 170 are substantially rectangular in shape and are arranged evenly over the entire circumference of the first region 110 of the connecting element 100.
[0195] FIG. 4 shows an isometric view of the connecting element 100 according to the invention. The first region 110 has a plurality of cooling fins 170. The lateral surface 111 is thus characterized by indentations and elevations. The cooling fins extend along the longitudinal direction 150. In the illustrated exemplary embodiment, the cooling fins 170 extend along the entire length of the first region 110 of the connecting element 100. Due to the cooling fins 170, the surface area of the lateral surface 111 is increased in comparison to a lateral surface 111 whose cross section would correspond to the envelope of the cross section as shown in FIG. 4.
[0196] In the exemplary embodiment shown, the second region 120 of the connecting element 100 is arranged eccentrically on the first region 110. The second region 120 has a thickening at its end facing the first region 110. The second end face 122 is arranged at the opposite end. A recess 130 is arranged in the first end face 112 of the first region 110. This can also be arranged off center from the central axis of the first region 110.
[0197] FIG. 5 shows a charging cable plug connector 300 according to the invention in accordance with an exemplary embodiment. Two connecting elements 100, 100 are enclosed by a housing 200. The second regions 120 are positioned eccentrically on the first regions 110. The central axes of the second regions 120 are spaced apart by a smaller distance than the central axes of the first regions 110. In the embodiment shown, the cooling fins 170 on the sides of the connecting elements 100, 100 which face away from the other connecting element 100, 100 have an increased length compared to the sides which face the other connecting element 100, 100. This promotes the release of heat to the outside. In particular, an increased temperature is to be expected between the two connecting elements 100, 100, which is regularly higher than the ambient temperature on the sides facing away from the other connecting element 100, 100. For this reason, heat transport to the sides of each of the at least two connecting elements 100, 100 facing away from the other connecting elements is promoted. This can be further enhanced by the choice of the length of the cooling fins.
[0198] FIG. 6 shows various representations through connecting elements 100 according to the invention.
[0199] Here, FIG. 6a shows an embodiment in which the second region 120 has a smaller diameter, in particular a smaller cross section, than the first region 110. A fastening element 130 is arranged at the first end face of the first region 110. In the exemplary embodiment shown, this is a pin 130, which can, for example, have a thread. The second region 120 is shaped, for example, as a pin.
[0200] FIG. 6b shows an embodiment of the connecting element 100 according to the invention in which the second region 120 has substantially the same diameter, in particular the same cross section, as the first region 110. The fastening element 130 in the first end face is a second recess 130 in the embodiment shown. The second region 120 comprises a recess 124. This can, for example, be configured to accommodate a plug, a connecting pin, a rod or the like. For example, the connecting element 100 shown can serve as part of a socket for a charging plug. A plug-in element of the charging plug can, for example, be inserted into the second recess 124 of the connecting element 100. Spring elements 125 can be arranged in the second recess 124 as shown. The spring elements 125 can effect a contact pressure between a plug-in element, which is inserted into the second recess 124, and the connecting element. In this way, the contact resistance between a plug-in element and the connecting element 100 can be reduced.
[0201] FIG. 6c shows a further embodiment of the connecting element 100 according to the invention. In this, the cross section and/or the diameter of the second region 120 is larger than that of the first region 110. The second region 120 has a second recess 124. The first region 110 has a fastening element 130 in the form of a recess with an internal thread 130.
[0202] For example, an attachment element 500 can be attached to the connecting element 100. In the exemplary embodiment shown, the attachment element 500 is designed as a busbar 500. The busbar 500 comprises a hole, in particular a through-hole 510. The busbar 500 can be connected to the connecting element 100 by means of a screw 520.
[0203] FIG. 7 illustrates the characterization of the cooling fins 170 on the connecting elements 100, 100.
[0204] As shown in FIG. 7a, in the case of two connecting elements 100, 100, one of the two connecting elements 100, 100, in particular its second region 120, can be separated into two regions by means of a plane A. The plane A is in particular aligned parallel to the central axis B of the relevant connecting element 100, 100, in particular its first region 110, and runs through it. At the same time, the surface A is oriented perpendicular to the distance vector C between the central axis of the first region 110 of the connecting element 100 and the central axis of the first region 110 of the connecting element 100.
[0205] FIG. 7b shows the cross section of the two connecting elements 100, 100, in particular their first regions 110. The cross section of the first region 110 of the connecting element 100 can be divided into two regions 180, 182 by means of the plane A. In the example shown, the cooling fins 170 are arranged exclusively on the side 182 of the connecting element 100 facing away from the other connecting element 100. On the other hand, no cooling fins are arranged on the side 180 of the connecting element 100 facing the other connecting element 100.
[0206] FIG. 7c shows one possibility of defining the cooling fins 170. For the cross section of a first region 110 of a connecting element 100, an outer envelope 160, already known from the above explanations, can be defined. This was the smallest convex surface which encloses the entire cross section of the first region 110. Similarly, a largest inner convex surface 162 can be definedwhich can be arranged within the cross section of the first region 110 of the connecting element 100. All subregions of the cross section of the first region 110 which are not occupied by the largest inner convex surface 162 can be defined as cooling fins 170.
