Cooling arrangement for a charging socket and charging socket

Abstract

The invention relates to a cooling arrangement (1) for a charging socket (2), in particular a charging socket (2) of a motor vehicle, comprising a housing shell (3) and a first plate (4), wherein the housing shell (3) and the first plate (4) are arranged opposite each other, wherein the housing shell (3) has a first side (5) facing the first plate (4) and a second side (6) facing away from the first plate (4), and the first plate (4) has a first side (7) facing the housing shell (3) and a second side (8) facing away from the housing shell (3), wherein at least one busbar (9, 10) or busbars (9, 10) is or are arranged between the housing shell (3) and the first plate (4), wherein the housing shell (3) has at least one recess (20) for receiving the at least one busbar (9, 10), and the at least one busbar (9, 10) is received in the at least one recess (20), wherein the first plate (4) with its first side (5,7) is in thermal contact with the busbar (9, 10) or busbars (9, 10), wherein the first plate (4) has cooling fins (11) arranged on its second side (8).

Description

[0001] The invention relates to a cooling arrangement for a charging socket and a charging socket with a cooling arrangement, in particular for an electrically powered motor vehicle.

[0002] Electrically powered motor vehicles are typically equipped with a battery system to store electrical energy in order to use this electrical energy, for example, to power the motor vehicle.

[0003] The vehicles are equipped with a charging socket to allow the battery system to be charged from a charging network using a charging cable.

[0004] It turns out that the charging socket and the electrical wiring can heat up during charging due to the high currents involved, which can lead to thermal damage to the charging socket, an undesirable outcome. One solution would be to reduce the charging current, but this is often highly undesirable because it significantly extends the charging time. If the charging process is an intermediate charging step during a charging stop, it is typically desirable for the charging process to be as fast as possible, making a reduction in the charging current rather undesirable.

[0005] German patent DE 10 2022 004 755 A1 discloses a cooling system for a charging port in which each charging cable is provided with a number of radially projecting cooling fins, and a fan with a fan wheel arranged coaxially to the charging cable is arranged to generate an airflow over the fins. Such a cooling system is very complex and expensive, and also prone to failure.

[0006] DE 10 2019 104 655 A1 discloses a high-current wiring system for a charging connector of an electrically powered motor vehicle.

[0007] DE 10 2020 202 963 A1 discloses an intermediate circuit capacitor for an inverter of a motor vehicle.

[0008] DE 10 2021 101 528 A1 discloses a module for a connector part with a casing, at least two busbars arranged in the casing, to which a plug contact and at least one load line can be connected or are connected, and at least one heat capacity element mounted in or on the casing, wherein the module is mounted on the connector part.

[0009] US patent 2022 / 0368090A1 discloses an electrical connection arrangement with an L-shaped busbar.

[0010] The task is to create a cooling arrangement for a charging socket and a charging port that provides improved cooling and is nevertheless simple and straightforward in design.

[0011] The problem is solved by the cooling arrangement with the features of claim 1.

[0012] One embodiment of the invention relates to a cooling arrangement for a charging socket, in particular a charging socket of a motor vehicle, comprising a housing shell and a first plate, wherein the housing shell and the first plate are arranged opposite each other, wherein the housing shell has a first side facing the first plate and a second side facing away from the first plate, and the first plate has a first side facing the housing shell and a second side facing away from the housing shell, wherein at least one busbar or busbars are arranged between the housing shell and the first plate, wherein the housing shell has at least one recess for receiving the at least one busbar and the at least one busbar is received in the at least one recess, wherein the first plate is in thermal contact with the busbar or busbars with its first side.The first plate has cooling fins arranged on its second side. This allows for effective cooling of busbars that can provide electrical power to a charging socket, so that cooling the busbars as a whole also cools the charging socket.

[0013] It is particularly advantageous if the busbar(s) is / are received in the recess(s) and is / are filled with a thermally conductive filler compound. This ensures good, even thermal contact with the first plate, as it compensates for differences in thickness and tolerances.

[0014] It is also advantageous to arrange electrical insulation between the busbar(s) and the first plate to electrically isolate the first plate from the at least one busbar. This allows the busbars themselves to be electrically conductive and not insulated, and to be inserted into the recess(s), with the additional insulation providing insulation from the first plate.

[0015] Furthermore, it is also advantageous if the electrical insulation is designed as a layer of electrically insulating material, particularly as a foil, sheet, or similar. This allows for insulation to be tailored to meet specific requirements, exhibiting not only good electrical insulating properties but also very good thermal conductivity.

[0016] It is also advantageous if at least one electrical connection element is provided, or if electrical connection elements are provided, which are electrically contacted between the housing shell and the first plate with the busbar(s). These connection elements serve, for example, to electrically connect the charging socket to a standard wiring harness.

[0017] It is also advantageous if the busbar or busbars between the housing shell and the first plate are electrically insulated in the area of ​​electrical contact of the connection element or elements.

[0018] It is also advantageous if the connection element or elements protrude through at least one opening in the housing shell.

[0019] It is also advantageous if the housing shell has at least one opening and / or at least one recess through which at least one of the busbars protrudes. This allows for a suitable, space-saving design.

[0020] The problem with the charging socket is solved by the features of claim 9.

[0021] One embodiment of the invention relates to a charging socket for a motor vehicle with a housing having a plug receptacle for inserting a charging cable, wherein electrical connection elements are provided in the plug receptacle which are electrically contacted by means of busbars, furthermore with a cooling arrangement according to the invention. This allows for improved cooling of the charging socket, the design being simple, space-saving and reliable.

[0022] It is also advantageous if the optional housing includes at least one opening through which the cooling fins of the cooling assembly protrude. This allows air to flow around the cooling fins, enabling effective cooling.

[0023] The invention will now be explained in detail using exemplary embodiments and with reference to the drawings. The drawings show: Fig. 1 a schematic exploded view of an embodiment of a cooling arrangement, Fig. 2 a further schematic representation of the cooling arrangement according to Fig. 1, Fig. 3 a schematic representation of an embodiment of a charging socket with a cooling arrangement, Fig. 4. A further schematic partial representation of the cooling arrangement to illustrate the method for manufacturing a cooling arrangement. Fig. 5. A further schematic partial representation of the cooling arrangement to illustrate the method for manufacturing a cooling arrangement. Fig. 6. A further schematic partial representation of the cooling arrangement to illustrate the method for manufacturing a cooling arrangement. Fig. 7. A further schematic partial representation of the cooling arrangement to illustrate the method for manufacturing a cooling arrangement. Fig. 8 Another schematic partial representation of the cooling arrangement to illustrate the method for manufacturing a cooling arrangement, Fig. 9. A further schematic partial representation of the cooling arrangement to illustrate the method for manufacturing a cooling arrangement. Fig. 10 a schematic representation of another embodiment of a cooling arrangement, Fig. 11 a schematic exploded view of the embodiment of the cooling arrangement according to Fig. 10, Fig. 12 a schematic representation of a further embodiment of a cooling arrangement, and Fig. 13 a schematic representation of a further embodiment of the cooling arrangement according to Fig. 12.

[0024] The invention relates to a cooling arrangement 1, in particular for a charging socket 2 of a motor vehicle, wherein the invention further relates to such a charging socket 2.

[0025] The Fig. Figures 1 to 4 show different representations of an exemplary embodiment of a cooling arrangement 1 and the Fig. Figure 5 shows a charging socket 2 with such a cooling arrangement 1.

[0026] The cooling arrangement 1 is specifically designed for a charging socket 2 of a motor vehicle. However, it can also be used in other ways.

[0027] The cooling arrangement 1 comprises a housing shell 3 and a first plate 4, wherein the housing shell 3 and the first plate 4 are arranged substantially opposite each other.

[0028] The housing shell 3 has a first side 5 facing the first plate 4 and a second side 6 facing away from the first plate 4. The first plate 4 has a first side 7 facing the housing shell 3 and a second side 8 facing away from the housing shell 3. According to Fig. 1 is or are arranged between the housing shell 3 and the first plate 4 at least one busbar 9, 10 or busbars 9, 10 for the electrical supply in particular of a charging socket 2.

[0029] The housing shell 3 and the first plate 4 with their respective first sides 5, 7 are in thermal contact with the busbar 9, 10 or with the busbars 9, 10 in order to dissipate heat from the busbar 9, 10 or from the busbars 9, 10.

[0030] To improve this heat dissipation, cooling fins 11 are provided on at least the first plate 4 on its second side 8.

[0031] In the illustrated embodiment, cooling fins 11 are provided only on the first plate.

[0032] Furthermore, it can be seen that the housing shell 3, see Fig. 4, has at least one indentation 20 for receiving the at least one power rail 9, 10 and the at least one power rail 9, 10 in which at least one indentation 20 is also received, see Fig. 5.

[0033] The first plate 4, in particular, is in thermal contact with the busbar 9, 10 or with the busbars 9, 10 via its first side 7. For better cooling and dissipation of heat from the busbar 9, 10 or from the busbars 9, 10, the first plate 4 has cooling fins 11 arranged on its second side 8.

[0034] From the Fig. 5 and Fig. 6 can also be seen that the busbar 9, 10 or the busbars 9, 10 is or are received in the recess 20 or in the recesses 20 and is or are provided with a thermally conductive filling material 21, see Fig. 6, for filling the indentation 20 or indentations 20. This achieves a flat design to improve the thermal contact with the first plate 4 and an electrical insulation 22 arranged between them.

[0035] Thus, an electrical insulation 22 is arranged between the busbar 9, 10 or the busbars 9, 10 and the first plate 4 in order to electrically isolate the first plate 4 from the at least one busbar 9, 10.

[0036] The electrical insulation 22 can be configured as a layer of electrically insulating material, in particular as a film, plate, or similar. The insulation 22 can be made of plastic, ceramic, or similar material.

[0037] The Fig. Figure 1 further shows that at least one electrical connection element 12 is provided, or that electrical connection elements 12 are provided, which are electrically contacted between the housing shell 3 and the first plate 4 with the busbars 9, 10.

[0038] It is advantageous if the busbar 9, 10 or the busbars 9, 10 between the housing shell 3 and the first plate 4 in the area of ​​the electrical contacting of the connection element 12 or the connection elements 12 is or are electrically insulated.

[0039] Out of Fig. 1 It is also apparent that the connecting element 12 or the connecting elements 12 protrude through at least one opening 13 in the housing shell 3.

[0040] Out of Fig. 4 It is also apparent that the housing shell 3 has at least one opening and / or at least one recess 14 through which at least one of the busbars 9, 10 protrudes.

[0041] The charging socket according to Fig. 3 is intended in particular for a motor vehicle. It has a housing 16 with a plug receptacle 17 for inserting a charging cable, wherein electrical connection elements (not shown) are provided in the plug receptacle 17, which are electrically contacted by means of busbars 9, 10, and wherein a cooling arrangement 1 is further provided.

[0042] In Fig. Figure 3 also shows that at least one opening 15 is provided in the housing 16, through which cooling fins 11 of the cooling arrangement 1 protrude.

[0043] The Fig. 10 and Fig. Figure 11 shows various illustrations of a further embodiment of a cooling arrangement 1. The cooling arrangement 1 is intended in particular for a charging socket of a motor vehicle (not shown). However, it can also be used in other ways.

[0044] The cooling arrangement 1 comprises a housing shell 3 and a first plate 4, wherein the housing shell 3 and the first plate 4 are arranged substantially opposite each other.

[0045] The housing shell 3 has a first side 5 facing the first plate 4 and a second side 6 facing away from the first plate 4. The first plate 4 has a first side 7 facing the housing shell 3 and a second side 8 facing away from the housing shell 3. According to the Fig. 10 and Fig. 11 is or are between the housing shell 3 and the first plate 4 at least one busbar 9, 10 or busbars 9, 10 for the electrical supply of, for example, a vehicle battery arranged.

[0046] The housing shell 3 and the first plate 4 with their respective first sides 5, 7 are in thermal contact with the busbar 9, 10 or with the busbars 9, 10 in order to dissipate heat from the busbar 9, 10 or from the busbars 9, 10.

[0047] To improve heat dissipation, cooling fins 11 are provided on at least the second side 8 of the first plate 4. In the illustrated embodiment, cooling fins 11 are provided only on the first plate 4.

[0048] Furthermore, it can be seen that the housing shell 3, see Fig. 11, has at least one indentation 20 for receiving the at least one power rail 9, 10 and the at least one power rail 9, 10 in which at least one indentation 20 is also received, see Fig. 11.

[0049] From the Fig. It can also be seen from Figure 11 that the busbar 9, 10 or the busbars 9, 10 are received in the recess 20 or in the recesses 20 and are provided with a thermally conductive filling material 21 to fill the recess 20 or the recesses 20. This achieves a flat design to improve the thermal contact with the first plate 4 and an electrical insulation arranged between them.

[0050] Thus, electrical insulation is arranged between the busbar 9, 10 or the busbars 9, 10 and the first plate 4 in order to electrically isolate the first plate 4 from the at least one busbar 9, 10.

[0051] The electrical insulation can be in the form of a layer of electrically insulating material, in particular as a film, plate, or similar. The insulation can be made of plastic, ceramic, or similar materials.

[0052] The Fig. 12 and Fig. Figure 13 shows a further embodiment similar to the embodiment of Fig. 10 and Fig. 11. The housing shell 3 is connected to a mounting plate 25, which supports the charging socket 2. The charging socket 2 is connected to the mounting plate 25, for example by screws or other positive locking connection.

[0053] The mounting plate 25 is connected to the housing shell 3 by means of spacers 26. This provides strain relief for the busbars 9, 10.

[0054] Otherwise, the description of the Fig. 10 and Fig. 11 referred. Reference symbol list 1 Cooling arrangement 2 charging sockets 3 Housing shell 4 first record 5 first page 6 second page 7 first page 8 second page 9 busbar 10 busbar 11 cooling fins 12 Connection element 13 Opening 14 recess 15 Opening 16 cases 17 Plug socket 20 indentation 21 Filling material 22 Insulation 25 Mounting plate 26 spacers

Claims

[1] Cooling arrangement (1) for a charging socket (2), in particular a charging socket (2) of a motor vehicle, comprising a housing shell (3) and a first plate (4), wherein the housing shell (3) and the first plate (4) are arranged opposite each other, wherein the housing shell (3) has a first side (5) facing the first plate (4) and a second side (6) facing away from the first plate (4), and the first plate (4) has a first side (7) facing the housing shell (3) and a second side (8) facing away from the housing shell (3), wherein at least one busbar (9, 10) or busbars (9, 10) is or are arranged between the housing shell (3) and the first plate (4), wherein the housing shell (3) has at least one recess (20) for receiving the at least one busbar (9, 10), and the at least one busbar (9, 10) is received in the at least one recess (20), wherein the first plate (4) with its first side (5,7) is in thermal contact with the busbar (9, 10) or busbars (9, 10), wherein the first plate (4) has cooling fins (11) arranged on its second side (8). [2] Cooling arrangement (1) according to claim 1, characterized by , that the busbar (9,10) or busbars (9,10) is or are received in the indentation (20) or indentations (20) and is or are provided with a thermally conductive filling compound (21) for filling the indentation (20) or indentations (20). [3] Cooling arrangement (1) according to claim 1 or 2, characterized by , that an electrical insulation (22) is arranged between the busbar (9,10) or busbars (9,10) and the first plate (4) in order to electrically insulate the first plate (4) from the at least one busbar (9,10). [4] Cooling arrangement (1) according to claim 3, characterized by, that the electrical insulation (22) is designed as a layer of an electrically insulating material, in particular as a foil, plate or the like. [5] Cooling arrangement (1) according to claim 1, 2, 3 or 4, characterized by , that at least one electrical connection element (12) is provided, or that electrical connection elements (12) are provided which are electrically contacted between the housing shell (3) and the first plate (4) with the busbars (9,10). [6] Cooling arrangement (1) according to claim 5, characterized by , that the busbar (9,10) or busbars (9,10) between the housing shell (3) and the first plate (4) in the area of ​​the electrical contacting of the terminal element (12) or terminal elements (12) is or are electrically insulated. [7] Cooling arrangement (1) according to claim 5 or 6, characterized bythat the connecting element (12) or connecting elements (12) protrudes through at least one opening (13) in the housing shell (3). [8] Cooling arrangement (1) according to one of the preceding claims, characterized by , that the housing shell (3) has at least one opening and / or at least one recess (14) through which at least one of the busbars (9,10) protrudes. [9] Charging socket (2) for a motor vehicle with a housing (16) with a plug receptacle (17) for plugging in a charging cable, wherein electrical connection elements (12) are provided in the plug receptacle (17) which are electrically contacted by means of busbars (9,10), further comprising a cooling arrangement (1) according to one of the preceding claims. [10] Charging socket (2) according to claim 9, characterized by , that at least one opening (15) is provided in the housing (16) through which cooling fins (11) of the cooling arrangement (1) protrude.

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