Charging connection device

Abstract

The utility model discloses a charging connection device in the field of automobile charging, and the device comprises a first plug bush assembly which is used for connecting external power supply equipment; a first connecting piece is fixed at one end of the plug bush assembly, and the other end of the plug bush assembly is fixedly connected with the transmission assembly through a second connecting piece; the second connecting piece is detachably connected with the plug bush assembly and the transmission assembly, and the second plug bush assembly and the transmission assembly are connected with the transmission assembly; wherein the current of the power supply equipment flows into the second plug bush assembly through the plug bush assembly and the transmission assembly; the plug bush assembly and the transmission assembly are connected and installed through the second connecting piece, so that the plug bush assembly and the transmission assembly can be detached, the connecting pieces are arranged at the two ends of the plug bush assembly, that is, most of the two pieces in the connector can be assembled, and the situation that connectors of different specifications are integrally replaced due to the fact that a traditional connector structure faces different vehicle platform positioning is avoided; materials and specifications are freely selected and assembled; and cost reduction and benefit increase are realized.

Description

A charging connection device Technical Field

[0001] This application relates to the field of new energy vehicle charging technology, specifically to a charging connection device. Background Technology

[0002] Currently, there are connecting cables between the internal battery of new energy vehicles and external charging equipment. These cables mainly transmit electrical energy from the external charging equipment to the vehicle battery to charge it.

[0003] Due to varying national and market demands, existing automakers develop vehicles with different configurations, such as platforms with different voltages, battery capacities, target markets, and price points. They also develop charging platforms with fast and slow charging modes to meet market positioning needs.

[0004] Based on the different positioning of vehicle platforms by the aforementioned automakers, end-user automakers have also put forward different configuration requirements for the connection cables between the internal battery and external charging equipment.

[0005] For example, slow charging with low current requires small-gauge cables, while fast charging with high current requires large-gauge cables. Lower-spec models can use low-cost charging cables, and so on. Meanwhile, some entry-level models may use liquid-free cooling solutions; however, most components of the connection devices are manufactured as a single unit.

[0006] Based on the above configuration combinations, ODM (Original Design Manufacturer) companies need to design multiple SKUs (Stock Keeping Units) to meet the requirements, resulting in a large number of product categories and high management costs. Furthermore, the multiple product categories lead to high costs for individual product development, production, and sales, reducing market competitiveness. Therefore, how to produce modular charging equipment is a problem we need to solve. Summary of the Invention

[0007] The purpose of this application is to provide a charging connection device to solve the defect in the prior art that requires the entire connector to be replaced when the connection device faces different power supply requirements.

[0008] To achieve the above objectives, this application employs the following technical solution:

[0009] This application discloses a charging connection device, which includes

[0010] The first socket assembly is used to connect to external power supply equipment;

[0011] The transmission component includes a first connector fixed to one end of the first socket assembly, and a second connector fixedly connected to the transmission component at the other end; the second connector detachably connects the first socket assembly and the transmission component.

[0012] The second socket assembly is connected to the transmission assembly; wherein the current from the power supply device flows into the second socket assembly through the first socket assembly and the transmission assembly.

[0013] In a further embodiment of this application, the first socket assembly includes a DC socket and an encapsulated outer shell, wherein the encapsulated outer shell covers the axial surface of the DC socket, and the first socket assembly and the second socket assembly have the same structure.

[0014] In a further embodiment of this application, the other end of the first plug assembly is provided with an axial mounting groove, the second connector is fixedly connected to the transmission assembly, and the second connector is fixedly connected to the mounting groove.

[0015] In a further embodiment of this application, the transmission component includes a cable core and a cable, wherein the core of the cable is fixed to the cable core.

[0016] In a further embodiment of this application, the charging connection device is provided with a liquid flow cavity outside the body, and the coolant in the liquid flow cavity can circulate.

[0017] In a further embodiment, the first socket assembly is provided with a water-cooled outer shell, and a water pipe is connected to the end of the water-cooled outer shell away from the first connector. The transmission assembly is placed inside the water pipe. A first cavity is provided between the water-cooled outer shell and the first socket assembly, and a second cavity is provided between the water pipe and the cable. The first cavity, the second cavity, and the cooling cavity in the second socket assembly are connected. The water-cooled outer shell and the cooling cavity are provided with an inlet and an outlet in sequence.

[0018] In a further embodiment, a double-layer inner flow channel connecting pipe is provided between the water-cooled outer shell and the water pipe. The two ends of the double-layer inner flow channel connecting pipe are fixedly connected to the water-cooled outer shell and the water pipe, respectively. The double-layer inner flow channel connecting pipe is provided with an inner flow channel, which is sealed to the first cavity and the second cavity.

[0019] In a further embodiment of this application, there are two first socket components, which are symmetrically arranged.

[0020] A further embodiment also includes a panel, in which the first socket assembly is fixed.

[0021] The beneficial effects of this application are as follows:

[0022] The first socket assembly and the transmission assembly of this application are connected and installed through the second connector, which ensures that the two can be disassembled. Both ends of the first socket assembly and the second socket assembly have connectors, meaning that most of the two parts in this connector can be assembled. This avoids the need to replace the entire connector with a different specification due to the different positioning of the vehicle platform, which is a traditional connector structure. The materials and specifications can be freely selected and assembled, thus achieving cost reduction and efficiency improvement.

[0023] In addition, the connector is equipped with a water-cooled shell and water pipes. A liquid flow cavity is formed between the connector's internal core and cables inside the water-cooled shell and water pipes. During use, a circulating coolant is added to this cavity to ensure efficient cooling, protect the connector, and improve its working performance. Attached Figure Description

[0024] Figure 1 is a cross-sectional schematic diagram of the charging connection device in an embodiment of this application;

[0025] Figure 2 is an enlarged view of a portion of the left side of Figure 1.

[0026] in:

[0027] 1. First connector; 2. Front panel; 3. DC socket; 4. Rubber-coated outer shell; 5. Water-cooled outer shell; 6. Second connector; 7. Cable contact socket; 8. Double-layer inner flow channel connecting pipe; 9. Cable core; 10. Water pipe; 11. Cable outer shell; 12. Wire core; 13. Water inlet; 14. Second cavity; 15. Internal water inlet; 16. Internal water inlet channel; 17. Liquid outlet;

[0028] 100, First socket assembly; 200, Second socket assembly; 300, Transmission assembly. Detailed Implementation

[0029] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit this application or its application or use.

[0030] As shown in Figures 1 and 2, this embodiment discloses a charging connection device, which includes a first socket assembly 100, a transmission assembly 300, and a second socket assembly 200. The first socket assembly 100 is used to connect to an external power supply device. The second socket assembly 200 is used to connect to an in-vehicle power supply device. One end of the first socket assembly 100 is fixed with a first connector 1, and the other end is fixedly connected to the transmission assembly 300 through a second connector 6. The second connector 6 is detachably connected to the first socket assembly 100 and the transmission assembly 300, and the transmission assembly 300 is connected to the transmission assembly 300. The current from the power supply device flows into the second socket assembly 200 through the first socket assembly 100 and the transmission assembly 300. The first socket assembly 100 and the second socket assembly 200 have the same structure and are symmetrically arranged.

[0031] The connection device in this embodiment is designed with multiple detachable functional unit modules, which are installed inside the vehicle. By utilizing the modular design of each functional unit module, the components such as cables and charging sockets, as well as their materials and specifications, can be freely selected in actual production under different current conditions. It can also be used to select cooling methods according to different charging power requirements.

[0032] One end of the transmission component 300 in the connection device (the first connector 1 end) is connected to the charging terminal on the vehicle to enable the external charging device to transmit electrical energy to the vehicle battery; the other end of the transmission component 300 in the connection device (i.e. the second connector 6) is connected to the vehicle battery to enable the external electrical energy to charge the vehicle battery; the transmission component 300 can be replaced with different specifications according to the actual situation.

[0033] Continuing to observe Figure 2, the first socket assembly 100 includes a DC socket 3 and a rubber-coated outer shell 4. The rubber-coated outer shell 4 serves as insulation and covers the axial surface of the DC socket 3. The rubber-coated outer shell 4 is actually the outer rubber layer of the DC socket 3. The rubber layer is made of high thermal conductivity polymer plastic material injection molded and covered with the material. The high thermal conductivity of the material is (0.2W / MK—2.5 W / MK).

[0034] The other end of the DC socket 3 is provided with an axial mounting groove, specifically a cable contact socket 7. The mounting groove is used to install the transmission component 300. The end of the transmission component 300 is inserted into the inner wall of the second connector 6, and the second connector 6 is inserted into the mounting groove to ensure the stability of the connection between the transmission component 300 and the DC socket 3. Typically, the transmission component 300 includes a cable core 9 and a cable. The cable core 12 is fixed to the cable core 9, and the cable core 9 is inserted into the inner wall of the second connector 6. In this embodiment, a copper core or an aluminum core is used as the cable core 12. Copper or aluminum cores have high conductivity and are reasonably priced. During installation, the cable core 9 is crimped with the cable core 12 and the outer layer of the cable to form a whole.

[0035] In a further embodiment, in order to improve heat dissipation performance and meet the needs of vehicles with larger charging specifications, a liquid flow cavity is provided outside the charging connection device. The coolant in the liquid flow cavity can circulate, accelerating the heat dissipation capacity of the charging connection device and further improving the current carrying capacity of the charging connection device.

[0036] Specifically, a water-cooled outer shell 5 is provided outside the first socket assembly 100. A water pipe 10 is connected to the end of the water-cooled outer shell 5 furthest from the first connector 1. The transmission assembly 300 is placed inside the water pipe 10. A first cavity is formed between the water-cooled outer shell 5 and the first socket assembly 100. A second cavity 14 is formed between the water pipe 10 and the cable. The first cavity, the second cavity 14, and the cooling cavity in the second socket assembly 200 are interconnected. It should be noted that the adhesive layer is made of a high thermal conductivity polymer plastic material, which can electrically isolate the first connector 1, the two DC sockets 3 at both ends, and the cooling liquid. Simultaneously, utilizing the high thermal conductivity of the material, the heat from the first connector 1 and the two DC sockets 3 at both ends is transferred to the cooling liquid, thereby cooling the first connector 1 and the two DC sockets 3 at both ends and improving their current-carrying capacity. On the other end, the second socket assembly 200 is symmetrically arranged with the first socket assembly 100, and their structural configurations are identical.

[0037] The water-cooled outer shell 5 and the cooling cavity are provided with an inlet 13 and an outlet 17 in sequence. The water-cooled outer shell 5 is connected to an inlet pipe 10. The coolant in the inlet pipe 10 flows to the internal inlet 15 on the water-cooled outer shell 5. The outer shell of the second plug assembly 200 is connected to an outlet pipe 10. The coolant in the cooling cavity flows to the outlet 17 of the outlet pipe 10. A small pump is connected between the inlet 13 and the outlet 17. The pump power is sufficient to drive the coolant to circulate smoothly.

[0038] To ensure that the cooling liquid inside the water-cooled housing 5 is isolated from the cable contact sleeve 7 and the cable core 9, a double-layer inner flow channel connecting pipe 8 is provided between the water-cooled housing 5 and the water pipe 10. The double-layer inner flow channel connecting pipe 8 has an installation cavity and an inner flow channel. The DC sleeve 3 and the water pipe 10 are fixedly connected to the two ends of the installation cavity of the double-layer inner flow channel connecting pipe 8. The inner flow channel is sealed to the first cavity and the second cavity 14. It should be noted that the center lines of the installation cavity and the inner flow channel are collinear, and the inner flow channel is located on the outer surface of the installation cavity.

[0039] According to the conventional vehicle charging design, the charging connection device has two first socket components 100, which are symmetrically arranged. At the same time, the number of second socket components 200 is also arranged synchronously, with the number of the two first socket components 100 and the two second socket components 200 corresponding one-to-one. The device also has a panel at the end, and the first socket components 100 are fixed inside the panel. The panel helps to support the DC socket 3.

[0040] Specific installation details;

[0041] First socket assembly 100: First, install a rubber-coated shell on the outside of the DC socket 3, then insert the first connector 1 (crown spring) into the front end of the DC socket 3, then insert the second connector 6 (crown spring) into the other end of the DC socket 3, then install the water-cooled outer shell 5 onto the rubber-coated shell, and then install the front part of the DC socket 3 into the mounting hole of the front panel 2; the second socket assembly 200 is installed in the same way.

[0042] The cable core 9 is crimped with the wire core 12 and the cable outer shell 11. After crimping, the cable core 9 is assembled into the second connector 6 (crown spring) in the first plug assembly 100.

[0043] Here, a double-layer inner flow channel connecting pipe 8 is installed, and one end of the water pipe 10 is connected to the other end of the double-layer inner flow channel connecting pipe 8. The other end of the water pipe 10 is connected to the second plug assembly 200. Details will not be elaborated here. A closed flow channel is formed. It is standard practice to use seals (sealing rings) to seal the flow channel or cavity through which the coolant passes. Details will not be elaborated here.

[0044] in,

[0045] The coolant enters through the central inlet 13, passes through the internal inlet channel 16, then enters the internal inlet 15, and then enters the first cavity formed by the water-cooled outer shell 5 and the rubber-coated outer shell 4 to cool the DC socket 3. From the rubber-coated outer shell 4, it moves to the right to the outer layer of the second connector 6, and then through the inner channel of the double-layer inner flow channel connecting pipe 8 to the cable outer shell 11 to cool the cable conductor. The coolant continues forward to the double-layer inner flow channel connecting pipe 8 at the second socket assembly 200, where it cools the second socket assembly 200. The coolant then flows out from the outlet 17 at the second socket assembly 200 and is pumped back into the inlet 13 to complete one cooling cycle.

[0046] In the description of this application, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this application. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0047] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art will understand the specific meaning of the above terms in this application based on the specific circumstances.

Claims

1. A charging connection device, characterized in that, It includes a first socket assembly (100) for connecting to an external power supply device; a transmission assembly (300), one end of the first socket assembly (100) is fixed with a first connector (1), and the other end is fixedly connected to the transmission assembly (300) via a second connector (6); the second connector (6) is detachably connected to the first socket assembly (100) and the transmission assembly (300); and a second socket assembly (200), the transmission assembly (300) is connected to the transmission assembly (300); wherein, current flows into the second socket assembly (200) through the first socket assembly (100) and the transmission assembly (300).

2. The charging connection device according to claim 1, characterized in that, The first socket assembly (100) includes a DC socket (3) and a rubber-coated shell (4), the rubber-coated shell (4) covering the axial surface of the DC socket (3), and the first socket assembly (100) and the second socket assembly (200) have the same structure.

3. The charging connection device according to claim 1, characterized in that, The other end of the first plug assembly (100) is provided with an axial mounting groove, and the second connector (6) is connected to the transmission assembly (300), and the second connector (6) is fixedly connected to the mounting groove.

4. The charging connection device according to claim 1, characterized in that, The transmission component (300) includes a cable core (9) and a cable, wherein the core (12) of the cable is fixed to the cable core (9).

5. The charging connection device according to claim 1, characterized in that, The charging connection device is externally provided with a liquid flow cavity, and the coolant in the liquid flow cavity can circulate.

6. The charging connection device according to claim 4, characterized in that, The first socket assembly (100) is provided with a water-cooled shell (5). The end of the water-cooled shell (5) away from the first connector (1) is connected to a water pipe (10). The transmission assembly (300) is placed inside the water pipe (10). A first cavity is provided between the water-cooled shell (5) and the first socket assembly (100). A second cavity (14) is provided between the water pipe (10) and the cable. The first cavity, the second cavity (14) and the cooling cavity in the second socket assembly (200) are connected. The water-cooled shell (5) and the cooling cavity are provided with an inlet (13) and an outlet (17) in sequence.

7. The charging connection device according to claim 6, characterized in that, A double-layer inner flow channel connecting pipe (8) is provided between the water-cooled outer shell (5) and the water pipe (10). The two ends of the double-layer inner flow channel connecting pipe (8) are fixedly connected to the water-cooled outer shell (5) and the water pipe (10). An inner flow channel is provided on the double-layer inner flow channel connecting pipe (8), and the inner flow channel is sealed to the first cavity and the second cavity (14).

8. The charging connection device according to claim 1, characterized in that, There are two first socket components (100), and the two first socket components (100) are symmetrically arranged.

9. The charging connection device according to claim 8, characterized in that, It also includes a panel, in which the first socket assembly (100) is fixed.

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