Charging connector

Abstract

The utility model relates to the technical field of electric connection devices, in particular to a charging connector. The charging connector provided by the utility model comprises a connector shell and conductive contact elements arranged in the connector shell, at least part of the conductive contact elements are internally provided with closed inner cavities, and the closed inner cavities are internally provided with phase change materials. According to the utility model, the existing charging connector is improved, the closed inner cavity is arranged in the conductive contact piece, and the phase-change material is arranged in the closed inner cavity, so that the heat of the conductive contact piece can be effectively absorbed and transferred in time through the phase-change material, and other heat dissipation and cooling structures do not need to be configured; and moreover, the closed inner cavity is arranged in the conductive contact piece, other space is not occupied, and on the premise that the heat dissipation effect can be guaranteed, the structure is simple, and the cost is low.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of electric connection device, especially charging connector. BACKGROUND

[0002] In order to solve the range anxiety of pure electric vehicles, major manufacturers are developing high-power charging related models. Battery pack fast charging realizes 4C, 5C or even 6C charging, and the maximum charging current can reach 1000A / 10min. Accordingly, the connector also requires high-power fast charging. For the connector, the direct problem faced by high-power fast charging is that the internal conductive contact of the connector generates a lot of heat. If the heat is not dissipated quickly, the connector will be damaged. In the prior art, such as the connector disclosed in Chinese patent application CN117977271A, a liquid cooling circuit is configured for the internal conductive contact of the connector to dissipate heat. However, this method has a complex pipe structure and high sealing requirements, resulting in a large connector size and high cost. SUMMARY

[0003] The utility model aims at providing a charging connector to solve the problem of complex structure and high cost of the existing charging connector using liquid cooling.

[0004] The charging connector of the utility model comprises a connector shell and a conductive contact installed in the connector shell, at least part of the conductive contact is fixedly installed with a heat dissipation component, the heat dissipation component has a heat absorption surface attached to the conductive contact, the heat dissipation component has a closed inner cavity, and the closed inner cavity is filled with a phase change material.

[0005] Further, the conductive contact is a conductive row, the heat dissipation component is fixedly installed on the side surface of the conductive row, and the surface attached to the side surface of the conductive row constitutes the heat absorption surface.

[0006] Further, the heat dissipation component is a long strip block, and extends perpendicular to the length direction of the conductive row. The end of the heat dissipation component is provided with an opening communicating with the closed inner cavity, and the opening is provided with potting glue.

[0007] Further, the heat dissipation component is fixedly connected to the conductive row through a threaded connection piece perpendicular to the conductive row.

[0008] Further, the charging connector is a charging socket, the connector shell comprises a main cylinder, the outer side of the main cylinder is provided with a connecting flange for fixing the main cylinder on a device panel, the conductive contact is installed in the main cylinder, one end of the conductive contact is a plug connection end for connecting a plug contact, the other end of the conductive contact is an internal connection end for connecting an internal conductor of a device, the internal connection end extends out of the main cylinder, and the heat dissipation component is connected to the part of the conductive row extending out of the main cylinder.

[0009] Further, the two conductive rows are arranged in parallel and spaced apart in the thickness direction, and the heat dissipation component is arranged on the side of the conductive row away from the other conductive row.

[0010] The utility model discloses an improved charging connector, which is provided with a heat dissipation component containing phase change material on the conductive contact piece. The heat dissipation component can effectively dissipate heat from the conductive contact piece in time. The heat dissipation component can be independently installed on the conductive contact piece without other structures. The structure is simple and the cost is low.

[0011] The utility model discloses a charging connector which comprises a connector shell and a conductive contact piece installed in the connector shell. At least part of the conductive contact piece is provided with an encapsulation structure. The encapsulation structure and the conductive contact piece form a closed inner cavity, and the closed inner cavity contains phase change material.

[0012] Further, the surface of the conductive contact piece is provided with a receiving groove, and the receiving groove is welded with an encapsulation sheet. The encapsulation sheet and the receiving groove form the closed inner cavity, and the encapsulation sheet constitutes the encapsulation structure.

[0013] Further, the conductive contact piece is a conductive row, and the receiving groove is arranged on the side surface of the conductive row.

[0014] Further, the charging connector is a charging socket. The connector shell comprises a main cylinder. The outer side of the main cylinder is provided with a connecting flange for fixing the main cylinder on a device panel. The conductive row is installed in the main cylinder. One end of the conductive row is a plug connecting end for connecting a plug contact piece, and the other end is an internal connecting end for connecting an internal conductor of the device. The internal connecting end extends out of the main cylinder. At least part of the receiving groove is arranged on the part of the conductive row extending out of the main cylinder.

[0015] Further, the two conductive rows are arranged in parallel and spaced apart in the thickness direction, and the receiving groove is arranged on the side surface of the conductive row in the width direction.

[0016] The utility model discloses an improved charging connector. The encapsulation structure and the conductive contact piece form a closed inner cavity, and the closed inner cavity contains phase change material. The phase change material can effectively absorb and transfer the heat of the conductive contact piece in time. The closed inner cavity is arranged in the conductive contact piece without occupying other space. The structure is simple and the cost is low. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a structure schematic view of the charging connector of the utility model in use.

[0018] Figure 2 This is a schematic diagram of the charging connector and the adapter connector of this utility model in the mating state.

[0019] Figure 3 for Figure 2 The left view;

[0020] Figure 4 This is a schematic diagram of another embodiment of the charging connector of this utility model.

[0021] In the diagram: 10. Connecting flange; 11. Main cylinder; 12. Conductive busbar; 13. Receiving tank; 2. Plug; 3. Equipment panel; 4. Heat dissipation components; 40. Filling port. Detailed Implementation

[0022] The features and performance of this utility model will be further described in detail below with reference to the embodiments.

[0023] Phase change materials (PCMs) are materials that can absorb or release a large amount of latent heat by changing their state of matter at a constant temperature. Leveraging this property, this invention applies PCM to charging connectors, attaching it to the conductive contacts. When the conductive contacts of the charging connector generate significant heat, the PCM absorbs the latent heat, maintaining the conductive contacts at a suitable temperature and preventing damage. This method of cooling the conductive contacts eliminates the need for additional auxiliary structures, simplifying the overall structure of the charging connector and reducing cost.

[0024] Based on the above concept, several embodiments are provided below for illustration.

[0025] In one embodiment, such as Figures 1-3 As shown, the charging connector includes a connector housing, within which conductive contacts are installed. Because charging connector models and supply / demand requirements vary, the number and form of these contacts also differ. The conductive contacts referred to in this paper are primarily power contacts used for transmitting high currents. Among these conductive contacts, at least some or all are fixedly mounted with heat dissipation components 4, as required. The heat dissipation component 4 has a heat-absorbing surface that conforms to the conductive contacts, and it has a closed inner cavity filled with a phase change material. Thus, when the conductive contacts generate heat, the heat-absorbing surface of the heat dissipation component 4 can transfer the heat from the conductive contacts to the phase change material in the closed inner cavity. The phase change material undergoes a phase change and absorbs heat, thereby achieving heat transfer from the conductive contacts and cooling them.

[0026] Based on the above embodiments, in one embodiment, the conductive contact is a cylindrical conductive rod, and the heat dissipation component 4 is a sleeve structure. The sleeve structure has a sandwich space inside, which forms a closed inner cavity. The sleeve structure is sleeved on the outside of the conductive contact, and the inner peripheral surface of the sleeve structure that is in contact with the outer peripheral surface of the conductive contact forms a heat-absorbing surface. Of course, when the conductive contact is a conductive busbar, the heat dissipation component can be a frame structure with a cross-sectional shape matching the shape of the conductive busbar. The heat dissipation component is sleeved on the outside of the conductive busbar, and the inner peripheral surface of the sleeve structure that is in contact with the outer surface of the conductive contact forms a heat-absorbing surface.

[0027] In another embodiment, the conductive contact is a conductive busbar 12, and the heat dissipation component 4 is fixedly installed on the side of the conductive busbar 12, with the surface in contact with the side of the conductive busbar 12 forming the heat-absorbing surface. The heat dissipation component 4 can be a long strip-shaped block extending perpendicular to the length direction of the conductive busbar 12. The end of the heat dissipation component 4 is provided with a filling port 40 communicating with the closed inner cavity. The filling port 40 is used to seal the closed inner cavity with potting compound after the phase change material is filled into the closed inner cavity. Alternatively, the heat dissipation component 4 can be a sheet-like structure with an internal interlayer space forming the closed inner cavity. The sheet-like structure is fixed to the conductive busbar 12 with its surface in contact with the conductive busbar 12 and extends along the length direction of the conductive busbar 12. The end of the heat dissipation component 4 is provided with a filling port 40 communicating with the closed inner cavity. The filling port 40 is used to seal the closed inner cavity with potting compound after the phase change material is filled into the closed inner cavity.

[0028] In different embodiments, the connection between the heat dissipation component 4 and the conductive bus 12 can be different. For example, in one embodiment, the heat dissipation component 4 is welded to the conductive bus 12, or in another embodiment, the heat dissipation component 4 is fixedly connected to the conductive bus 12 by a threaded connector that passes vertically through the conductive bus 12.

[0029] The charging connector can be a charging plug 2, in such a way as Figures 1-3 In the illustrated embodiment, the charging connector is a charging socket. The connector housing includes a main cylinder 11. A connecting flange 10 for fixing the main cylinder 11 to the device panel 3 is provided on its outer side. A conductive contact is installed inside the main cylinder 11, with one end being a plug 2 connection end for connecting the plug 2 contact and the other end being an internal connection end for connecting the internal conductor of the device. The internal connection end extends out of the main cylinder 11. A heat dissipation component 4 is connected to the portion of the conductive busbar 12 that extends out of the main cylinder 11. This utilizes the internal space of the device without occupying the internal space of the connector housing. Of course, in other embodiments, the heat dissipation component can be connected to the conductive busbar, with part inside the main cylinder and part outside; or the entire heat dissipation component can be inside the main cylinder. The relative position of the heat dissipation component to the main cylinder is not a necessary limitation for solving the technical problem of this utility model.

[0030] On the basis of the above-mentioned embodiments, in one embodiment, the two conductive strips 12 are arranged in parallel with a spacing in the width direction, and the heat dissipation members 4 are arranged on the same side of the conductive strips 12. In another embodiment, as shown in Figures 1-3 , the two conductive strips 12 are arranged in parallel with a spacing in the thickness direction, and the heat dissipation members 4 are arranged on the side of the conductive strips 12 facing away from the other conductive strip 12.

[0031] In the embodiment shown in Figure 4 , the charging connector comprises a connector housing, and the conductive contact pieces are arranged in the connector housing. The number and form of the contact pieces in the charging connector vary according to the model and the supply and demand of the charging connector. In this article, the conductive contact pieces mainly refer to power contact pieces for transmitting large current. According to the need, at least some or all of the conductive contact pieces are provided with a packaging structure. The packaging structure and the conductive contact piece form a closed inner cavity, and the closed inner cavity is filled with a phase change material.

[0032] The structure of the closed inner cavity can be different in different embodiments. In one embodiment, the conductive contact piece can be a cylindrical conductive rod, and an inner hole is formed in the conductive contact piece. After the inner hole is filled with the phase change material, the inner hole is sealed by potting glue, and the potting glue forms the packaging structure. In one embodiment, as shown in Figure 4 , a receiving groove 13 is arranged on the surface of the conductive contact piece, and a packaging sheet is welded at the opening of the receiving groove 13. The packaging sheet and the receiving groove 13 form the closed inner cavity, and the packaging sheet forms the packaging structure. When the cylindrical conductive rod is used as the conductive contact piece, the receiving groove 13 can be an annular groove, and the packaging sheet can be a cylindrical sheet. When the conductive strip 12 is used as the conductive contact piece, the receiving groove 13 is arranged on the side of the conductive strip 12.

[0033] The charging connector can be a charging plug 2. In the embodiment shown in Figure 4 , the charging connector is a charging socket. The connector housing comprises a main cylinder 11, and a connecting flange 10 is arranged on the outer side of the main cylinder 11 for fixing the main cylinder 11 on the equipment panel 3. The conductive contact pieces are arranged in the main cylinder 11, and one end of each of the conductive contact pieces is a plug 2 connecting end for connecting the contact pieces of the plug 2, and the other end is an internal connecting end for connecting the internal conductor of the equipment. The internal connecting end extends out of the main cylinder 11, and at least part of the receiving groove 13 is arranged on the part of the conductive strip 12 extending out of the main cylinder 11. In this way, the phase change material can release heat to the inside of the equipment when the phase change material releases heat, instead of concentrating in the connector housing.

[0034] On the basis of the above-mentioned embodiments, in one embodiment, the two conductive strips 12 are arranged in parallel with a spacing in the width direction, and the heat dissipation members 4 are arranged on the same side of the conductive strips 12. In another embodiment, as shown in Figure 4As shown, the two conductive rows 12 are arranged in parallel and spaced apart in the thickness direction thereof, and the accommodating grooves 13 are located on the sides in the width direction of the conductive rows 12.

[0035] The above is only a preferred embodiment of the present application, and is not used to limit the present application, the patent protection scope of the present application is subject to the claims, any equivalent structural changes made by using the content of the specification and drawings of the present application, and the same reason should be included in the protection scope of the present application.

Claims

1. A charging connector comprising a connector housing and an electrically conductive contact mounted within the connector housing, characterized in that, A heat dissipation component (4) is fixedly installed on at least part of the electrically conductive contact, the heat dissipation component (4) has a heat absorbing surface abutting the electrically conductive contact, and the heat dissipation component (4) has a closed inner cavity containing a phase change material.

2. The charging connector of claim 1, wherein, The electrically conductive contact is an electrically conductive row (12), and the heat dissipation component (4) is fixedly installed on the side surface of the electrically conductive row (12) and has a surface abutting the side surface of the electrically conductive row (12) to form the heat absorbing surface.

3. The charging connector of claim 2, wherein, The heat dissipation component (4) is in a long strip shape and extends perpendicularly to the length direction of the electrically conductive row (12), and the end of the heat dissipation component (4) is provided with an opening communicating with the closed inner cavity, and the opening is provided with potting glue.

4. The charging connector according to claim 2 or 3, characterized in that, The heat dissipation component (4) is fixedly connected to the electrically conductive row (12) through a threaded connecting piece penetrating the electrically conductive row (12) perpendicularly.

5. The charging connector according to claim 2 or 3, characterized in that, The charging connector is a charging socket, the connector housing includes a main cylinder (11), the outer side of the main cylinder (11) is provided with a connecting flange (10) for fixing the main cylinder (11) to the equipment panel (3), the electrically conductive contact is installed in the main cylinder (11) and has one end for connecting the plug (2) connecting end of the contact of the plug (2) and the other end for connecting the internal conductor of the equipment, the internal conductor extends out of the main cylinder (11), and the heat dissipation component (4) is connected to the part of the electrically conductive row (12) extending out of the main cylinder (11).

6. The charging connector of claim 5, wherein the main body is The electrically conductive row (12) in the cylinder (11) has two, the two electrically conductive rows (12) are arranged in parallel and spaced apart in the thickness direction, and the heat dissipation component (4) is on the side of the electrically conductive row (12) facing away from the other electrically conductive row (12).

7. A charging connector comprising a connector housing and an electrically conductive contact mounted within the connector housing, characterized in that, An encapsulation structure is arranged on at least part of the electrically conductive contact, the encapsulation structure and the electrically conductive contact enclose a closed inner cavity, and the closed inner cavity contains a phase change material.

8. The charging connector of claim 7, wherein, The surface of the electrically conductive contact is provided with a containing groove (13), the groove opening of the containing groove (13) is welded with an encapsulation sheet, the encapsulation sheet and the containing groove (13) enclose the closed inner cavity, and the encapsulation sheet forms the encapsulation structure.

9. The charging connector of claim 8, wherein, The electrically conductive contact is an electrically conductive row (12), and the containing groove (13) is arranged on the side surface of the electrically conductive row (12).

10. The charging connector of claim 9, wherein, The charging connector is a charging socket, the connector housing includes a main cylinder (11), the outer side of the main cylinder (11) is provided with a connecting flange (10) for fixing the main cylinder (11) to the equipment panel (3), the electrically conductive row (12) is installed in the main cylinder (11) and has one end for connecting the plug (2) connecting end of the contact of the plug (2) and the other end for connecting the internal conductor of the equipment, the internal conductor extends out of the main cylinder (11), and at least part of the containing groove (13) is on the part of the electrically conductive row (12) extending out of the main cylinder (11).

11. The charging connector of claim 10, wherein the main body is The electrically conductive row (12) in the cylinder (11) has two, the two electrically conductive rows (12) are arranged in parallel and spaced apart in the thickness direction, and the containing groove (13) is arranged on the side surface of the electrically conductive row (12) in the width direction.

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