Charging socket and automobile

Abstract

The utility model provides a kind of charging socket and car, it is related to the technical field of socket, the charging socket provided by the utility model includes: quick-change terminal and adapter fixing part, the head end of quick-change terminal with the detachable connection of adapter fixing part, the tail end of adapter fixing part is connected with wire harness, and the wire harness forms conductive connection with quick-change terminal and adapter fixing part.When quick-change terminal fails, it can be removed from the socket, then replaced, and the replacement is convenient and simple, and the maintenance cost is lower.

Description

Technical Field

[0001] This utility model relates to the field of socket technology, and in particular to a charging socket and an automobile. Background Technology

[0002] As an alternative to traditional gasoline-powered vehicles, new energy vehicles have been widely used in passenger cars, commercial vehicles, and construction machinery in recent years. With advancements in battery technology and improvements in driving range, the electrification trend has gradually expanded from light vehicles to heavy-duty commercial vehicles and large construction machinery.

[0003] New energy vehicles are equipped with charging sockets, which include power contacts that are connected to wiring harnesses. The plug of an external power source is inserted into the power contacts to enable charging.

[0004] Then, the existing power contacts are integrated with the socket, and when they are damaged, the entire socket needs to be replaced, which is costly. Utility Model Content

[0005] The purpose of this invention is to provide a charging socket and an automobile to alleviate the technical problem of limited current carrying capacity of the wiring harness in existing charging sockets.

[0006] In a first aspect, the present invention provides a charging socket comprising: a quick-change terminal and an adapter fixing member, wherein the quick-change terminal is detachably connected to the head end of the adapter fixing member, and the tail end of the adapter fixing member is connected to a wire harness, and the quick-change terminal, the adapter fixing member and the wire harness form a conductive connection.

[0007] Furthermore, the head end of the adapter is provided with a first insertion hole, and the tail end of the quick-change terminal is inserted into the first insertion hole.

[0008] Furthermore, the head end of the quick-change terminal is provided with a second socket, and a torsion spring and / or a touch finger spring are provided in the second socket.

[0009] Furthermore, a crown spring is provided on the inner wall of the first socket, which abuts against the circumferential outer wall of the quick-change terminal.

[0010] Furthermore, the quick-change terminal is locked to the adapter fixing member by a second bolt.

[0011] Furthermore, the tail end of the adapter is connected to multiple conductive connectors, and each conductive connector is connected to a wire harness.

[0012] Furthermore, the conductive connector includes a first part and a second part, the first part being connected to the adapter fixing member, and the second part being connected to the wire harness; The first part and the second part are bent, and the second part is away from the axis of the adapter relative to the first part.

[0013] Furthermore, the conductive connector is connected to the adapter fixing member via a threaded assembly.

[0014] Furthermore, the threaded assembly includes a first bolt and a nut, the adapter fixing member is provided with a first through hole, the conductive connector is provided with a second through hole, and the first bolt passes through the first through hole and the second through hole in sequence and is connected to the nut. Furthermore, there are two conductive connectors, which are located at opposite ends of the first through hole, so that the first bolt passes through the second through hole on one conductive connector, the first through hole, and the second through hole on the other conductive connector in sequence before being connected to the nut.

[0015] Furthermore, the charging socket includes a housing that encloses the adapter fixing member, and a connection point between the adapter fixing member and the wiring harness; The outer casing is provided with an openable and closable window facing the head groove of the first bolt; the nut is fixedly connected to a conductive connector located away from the window.

[0016] Secondly, the present invention provides a car that includes the aforementioned charging socket.

[0017] This utility model has at least the following advantages or beneficial effects: The charging socket provided by this utility model includes: a quick-change terminal and an adapter fixing component. The quick-change terminal is detachably connected to the head end of the adapter fixing component, and the tail end of the adapter fixing component is connected to a wire harness. The quick-change terminal, the adapter fixing component, and the wire harness form a conductive connection.

[0018] When a quick-change terminal malfunctions, it can be easily and simply removed from the socket and replaced, making the replacement convenient and simple, and reducing maintenance costs.

[0019] The automobile provided by this utility model includes the aforementioned charging socket. Because the automobile provided by this utility model uses the aforementioned charging socket, it also possesses the advantages of a charging socket. Attached Figure Description

[0020] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0021] Figure 1 A cross-sectional view of the quick-change terminal, adapter fixing member, and wire harness of the charging socket provided in this embodiment of the utility model; Figure 2 for Figure 1 A magnified view of a portion of position A in the middle; Figure 3 A schematic diagram of a charging socket provided in an embodiment of this utility model; Figure 4 A schematic diagram of the internal structure of the charging socket provided in an embodiment of this utility model; Figure 5 A cross-sectional view of a charging socket provided in an embodiment of this utility model.

[0022] Icons: 1-Adapter fixing piece; 2-Quick-change terminal; 3-Wire harness; 4-Conductive connector; 5-Torsion spring; 6-Finger spring; 7-Crown spring; 8-First bolt; 9-Nut; 10-Second bolt; 11-Outer shell; 12-Cover. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0024] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0025] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0026] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use. They are only for the convenience of describing this utility model 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. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0027] Furthermore, terms such as "horizontal" and "vertical" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0028] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" 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 of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0029] like Figures 1-5 As shown, the charging socket provided by this utility model can be applied to various electrical devices, especially in the field of new energy vehicles. The charging socket is typically installed on the vehicle body and electrically connected to the vehicle's power battery to enable external power to charge the battery. During charging, the power supply end is equipped with a charging connector, which physically connects to the charging socket on the vehicle body, forming a conductive path to transfer electrical energy from the external power source to the vehicle battery, completing the charging operation. This type of charging method has been widely used in public charging facilities, home charging piles, and vehicle systems, becoming one of the main means of energy replenishment for new energy vehicles.

[0030] like Figure 1 and Figure 2As shown, the quick-change terminal 2 is susceptible to wear and tear from plugging and unplugging, as well as arc erosion, during long-term use, leading to increased contact resistance and even functional failure. Traditional charging sockets use an integrated design or fixed connection method, requiring the entire socket to be replaced when the quick-change terminal 2 is damaged, which not only increases maintenance costs but also extends the downtime of charging facilities. In this embodiment, the charging socket also includes the quick-change terminal 2, which is detachably connected to the head end of the adapter fixing component 1, facilitating the replacement of the quick-change terminal 2. Specifically, the head end of the adapter fixing component 1 is provided with a first socket, and the tail end of the quick-change terminal 2 is inserted into the first socket. This structure allows the quick-change terminal 2 to be replaced separately without replacing the entire socket. Although this design improves maintenance convenience, it still has problems such as insufficient connection stability and contact resistance fluctuations in practical applications, especially in high-current fast charging scenarios, where the reliability and durability of the connection parts face severe challenges.

[0031] like Figure 2 As shown, in order to further increase the contact area, the quick-change terminal 2 is provided with a third through hole at the bottom, and the head end of the adapter fixing part 1 is provided with a screw hole. The second bolt 10 is inserted into the second through hole of the quick-change terminal 2 and then threaded into the screw hole. After tightening the second bolt 10, the bottom of the quick-change terminal 2 fits tightly with the first through hole.

[0032] The quick-connect terminal 2 has a second socket at its head end, within which are a 12mm torsion spring 5 and a 12mm contact finger spring 6 to increase the contact area with the charging gun terminal. This design aims to increase the contact area with the charging gun terminal by increasing the number of elastic contact points. Specifically, the synergistic effect of the torsion spring 5 and the contact finger spring 6 generates uniform contact pressure during insertion, thereby reducing contact resistance and improving current conduction performance.

[0033] A crown spring 7 is provided on the inner wall of the first socket at the head end of the adapter fixing component 1, abutting against the outer wall of the quick-change terminal 2. This spring combination has stronger conductivity and can meet the needs of high-current charging. The crown spring 7 is composed of multiple elastic metal springs arranged in a ring. When the quick-change terminal 2 is inserted, these springs will evenly wrap around and tightly fit against the outer wall of the terminal. This multi-point contact design significantly increases the effective contact area and reduces contact resistance, thereby improving current carrying capacity and heat dissipation performance. Especially during high-current transmission, the spring combination structure can maintain stable contact pressure and avoid poor contact caused by heat generation. Furthermore, since the crown spring 7 is connected to the adapter fixing component 1, there is no need to replace the crown spring 7 when replacing the quick-change terminal 2, further reducing maintenance costs.

[0034] like Figure 1 and Figure 2As shown, the charging socket includes an adapter fixing component 1, which is completely different from the prior art. The tail end of the adapter fixing component 1 is connected to multiple conductive connectors 4, and the number of conductive connectors 4 can be two, three, four, or even more.

[0035] Each conductive connector 4 is individually connected to a wire bundle 3, and each wire bundle 3 is independent of the others and does not interfere with each other.

[0036] The shape of the conductive connector 4 can be determined according to the shape of the charging socket. In this embodiment, in order to avoid interference between multiple wire harnesses 3, the shape of the conductive connector 4 can be set to be bent.

[0037] For example, the conductive connector 4 can be a bent copper busbar, comprising a sheet-like first part and a second part. The first part is connected to the adapter fixing part 1, and the second part is connected to the wire harness 3. The first part and the second part have a certain height difference, and the bent copper busbar is roughly "Z"-shaped. Specifically, in this embodiment, there are two conductive connectors 4, which are located on opposite sides of the adapter fixing part 1, as shown below. Figure 2 As shown, the first part and the second part are bent, and the second part of one conductive connector 4 is bent upward relative to its first part away from the axis of the adapter fixing part 1, while the second part of the other conductive connector 4 is bent downward relative to its first part away from the axis of the adapter fixing part 1. The spacing between the second parts of the two conductive connectors 4 is larger, which facilitates the placement of the wire harness 3 and avoids interference between the upper and lower wire harnesses 3.

[0038] The first part, concerning the common connection methods for adapter fasteners, includes two main forms: welding and screw connections. Welding achieves a permanent bond between metals by melting solder at high temperatures, resulting in low contact resistance and a strong connection. Screw connections utilize mechanical tightening force to ensure tight contact between conductor surfaces, facilitating disassembly and maintenance. Both methods have advantages in different applications, but also limitations. Welding requires a high level of skill and a suitable operating environment; improper welding can lead to incomplete welds or thermal damage. Screw connections, on the other hand, may experience a decrease in contact pressure due to vibration or material creep, affecting long-term stability.

[0039] like Figure 1 As shown, in this embodiment, the first part is connected to the adapter fixing member 1 by a first bolt 8 and a nut 9. Specifically, the adapter fixing member 1 is provided with a first through hole, and the conductive connector 4 is provided with a second through hole. The first bolt 8 passes through the first through hole and the second through hole in sequence and is then connected to the nut 9.

[0040] To improve connection stability, the number of sets of first bolts 8 and nuts 9 used to connect the first part and the adapter fastener 1 can be more than one set. In this embodiment, there are two sets of first bolts 8 and nuts 9. In other feasible solutions, there can be more sets, depending on the specific dimensions of the first part and the adapter fastener 1.

[0041] Furthermore, in this embodiment, the number of conductive connectors 4 is two, for example, the 140 mm required for 500A. 2 Split into two 70 mm 2 Thinner high-voltage wires have less stringent requirements for ultrasonic welding, connector selection, and vehicle wiring.

[0042] Two conductive connectors 4 are located on opposite sides of the adapter fixing member 1. The first parts of the two conductive connectors 4 are located at opposite ends of the first through holes. A first bolt 8 can be used to sequentially pass through the second through hole, the first through hole, and the second through hole on the other conductive connector 4 before connecting to the nut 9. The two conductive connectors 4 can be connected by a first bolt 8 and a nut 9. To increase the connection strength, in this embodiment, there are two first through holes, that is, the conductive connectors 4 and the adapter fixing member 1 are connected by two first bolts 8 and two nuts 9.

[0043] Of course, in other feasible solutions, one conductive connector 4 can be connected to the adapter fixing component 1 through a separate connection structure, and the other conductive connector 4 can be connected to the adapter fixing component 1 through a different connection structure. The two connection structures do not affect each other, meaning that one conductive connector 4 can be disassembled individually. When disassembling or maintaining one of the conductive connectors 4, it is not necessary to operate other connecting components at the same time, and the stability of the entire connection system will not be affected.

[0044] The second part is welded to wire harness 3, meaning the conductive connector 4 and wire harness 3 are connected as a single unit. This allows it to be removed from the adapter fixing piece 1 for easy maintenance and replacement. To achieve stable current transmission, the conductive connector 4 and wire harness 3 are typically connected using welding processes, including mature welding technologies such as soldering and laser welding. This connection method forms a permanent conductive path through metal fusion, ensuring low contact resistance during high current transmission.

[0045] The charging socket includes a housing 11, which encloses the adapter 1 and the connection point between the adapter 1 and the wiring harness 3. The housing 11 provides insulation and protection. The housing 11 is manufactured using injection molding to completely enclose the adapter 1 and its connection point with the wiring harness 3. This integrated encapsulation structure effectively prevents the intrusion of external objects, avoids the risk of short circuits, and also provides dust and water resistance.

[0046] Specifically, engineering plastics are currently widely used as the housing material in the industry, with polycarbonate (PC) and nylon (PA) being the mainstream choices due to their excellent overall performance. These two materials can meet the UL94 V-0 flame retardant standard by adding flame retardants, while also possessing good dielectric strength and impact resistance. In terms of mechanical strength, PC material exhibits excellent rigidity and dimensional stability, while PA material demonstrates excellent abrasion resistance and fatigue resistance. These properties enable them to meet the technical requirements of most electrical equipment housings regarding insulation resistance, flexural strength, and arc resistance.

[0047] like Figure 5 As shown, the outer casing 11 has a window, which can be closed by a cover 12 connected to the outer casing 11. The cover 12 can be closed using an interference fit plug-in structure, with precise dimensional design to create a tight fit with the edge of the window; or it can be closed using a threaded connection structure, with matching threads machined on both the cover 12 and the edge of the window, achieving sealing and opening through rotation. Both connection methods ensure the window remains completely sealed when closed, preventing dust and liquid intrusion. When equipment maintenance is required, the cover 12 can be manually removed to fully open the window.

[0048] The window faces the head groove of the first bolt 8, and the nut 9 is fixedly connected to a conductive connector 4 away from the window. When the wiring harness 3 needs to be replaced, the cover 12 can be opened, the screwdriver can be inserted into the window and connected to the head groove of the first bolt 8, and then the screwdriver can be rotated to loosen the first bolt 8. The nut 9 is welded to the conductive connector 4 and fixed in place. After the first bolt 8 is removed, the conductive connector 4 is separated from the adapter fixing part 1. The setting of the window facilitates the maintenance of the wiring harness 3.

[0049] In summary, the charging socket in this embodiment has the following advantages: 1. Solve the problem of limited current-carrying capacity of reeds. The charging gun power terminal and quick-connect terminal 2 are connected by a 12mm torsion spring 5 and a 12mm finger spring 6. The quick-connect terminal 2 is connected to the adapter fixing piece 1 by a 16mm crown spring 7 and a second bolt 10. This combination of springs provides stronger conductivity. The synergistic effect of the torsion spring 5 and the finger spring 6 generates uniform contact pressure during insertion, thereby reducing contact resistance and improving current conduction performance.

[0050] 2. Solve the problem of limited current carrying capacity of wire harness 3. Currently, the maximum specification for socket wiring harness 3 is 120mm. 2 It is difficult to further increase the cross-sectional area. However, with the total cross-sectional area remaining unchanged, increasing the number of wire harnesses 3 can effectively improve the current carrying capacity of the socket.

[0051] 3. Solve the problem that thick wire is not conducive to ultrasonic welding. Thicker wires require a wider soldering width, while wider terminals require more space in the socket. By splitting wire harness 3, thinner wire harness 3 has a lower requirement for soldering width, which is more conducive to wiring within the socket.

[0052] 4. Solve the problem of thick wires hindering connector selection. After splitting the thick wire into thin wire harness 3, it is easier to select the connector at the other end of the high-power socket wire harness 3.

[0053] 5. Solve the problem of thick wires being detrimental to vehicle wiring. As electronic devices become increasingly miniaturized and integrated, the space available for wiring harnesses (3) is becoming increasingly limited. In fields such as automotive, aerospace, and consumer electronics, wiring harnesses (3) need to be routed in high-density environments, placing higher demands on the bending performance of the wires. In traditional wiring techniques, the thickness of the wiring harness (3) directly affects its bending radius. Thicker wires, due to physical limitations, have a larger minimum bending radius, making them prone to interference and friction with surrounding sheet metal structures when routed in confined spaces. In contrast, thinner wires have a smaller bending radius, allowing for more flexible routing in confined spaces and effectively avoiding contact wear with metal structures. In current engineering practice, wiring harness (3) design needs to comprehensively consider multiple factors, including electrical performance, mechanical strength, and space constraints, with the bending radius being one of the key parameters affecting wiring feasibility.

[0054] 6. Resolve the issue that wire harness 3 cannot be detached from the socket. In the field of electrical connections, the connection method between the wire harness 3 and the terminal is one of the key factors affecting equipment maintenance efficiency. Traditionally, the adapter 1 and wire harness 3 are integrated, achieving a permanent connection through crimping or welding. This structure is widely used in industrial equipment, new energy vehicle charging systems, and other fields, where the adapter 1 handles high-current transmission, and the wire harness 3 is responsible for conducting electrical energy to the user equipment. When the adapter 1 is damaged due to long-term wear from insertion and removal, overload overheating, or poor contact, the inseparable nature of the wire harness 3 and terminal necessitates scrapping the entire assembly during repair, resulting in material waste and increased maintenance costs. This technical solution uses a split structure design, modularizing the quick-change terminal 2 and wire harness 3. The quick-change terminal 2 is detachable via the front insulator and the second bolt 10, and the wire harness 3 can be independently replaced via the cover 12 and the first bolt 8, thus solving the problem of high maintenance costs associated with traditional integrated structures.

[0055] The automobile provided by this utility model includes the aforementioned charging socket. Because the automobile provided by this utility model uses the aforementioned charging socket, it also possesses the advantages of a charging socket.

[0056] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A charging socket, characterized by, include: The quick-change terminal (2) and the adapter fixing member (1) are detachably connected at the head end of the quick-change terminal (2) and the adapter fixing member (1), and the tail end of the adapter fixing member (1) is connected to the wire harness (3). The quick-change terminal (2), the adapter fixing member and the wire harness (3) form a conductive connection.

2. The charging outlet of claim 1, wherein, The head end of the adapter (1) is provided with a first socket, and the tail end of the quick-change terminal (2) is inserted into the first socket.

3. The charging socket according to claim 2, characterized in that, The quick-change terminal (2) is provided with a second socket at its head end, and a torsion spring (5) and / or a finger spring (6) are provided in the second socket.

4. The charging socket according to claim 2, characterized in that, A crown spring (7) is provided on the inner wall of the first socket, which abuts against the circumferential outer wall of the quick-change terminal (2).

5. The charging outlet of claim 2, wherein, The quick-change terminal (2) and the adapter fixing member (1) are locked together by the second bolt (10).

6. The charging outlet of claim 1, wherein, The tail end of the adapter (1) is connected to a plurality of conductive connectors (4), and each of the conductive connectors (4) is connected to a wire harness (3).

7. The charging outlet of claim 6, wherein, The conductive connector (4) includes a first part and a second part, the first part being connected to the adapter (1) and the second part being connected to the wire harness (3); The first part and the second part are bent, and the second part is away from the axis of the adapter (1) relative to the first part.

8. The charging socket according to claim 7, characterized in that, The conductive connector (4) is connected to the adapter (1) via a threaded assembly.

9. The charging outlet of claim 8, wherein, The threaded assembly includes a first bolt (8) and a nut (9). The adapter (1) is provided with a first through hole, and the conductive connector (4) is provided with a second through hole. The first bolt (8) passes through the first through hole and the second through hole in sequence and is connected to the nut (9).

10. The charging outlet of claim 9, wherein, The number of conductive connectors (4) is two, and the two conductive connectors (4) are located at opposite ends of the first through hole, so that the first bolt (8) passes through the second through hole, the first through hole and the second through hole on the other conductive connector (4) in sequence and is connected to the nut (9).

11. The charging outlet of claim 10, wherein, The charging socket includes a housing (11) that encloses the adapter (1) and the connection point between the adapter (1) and the wiring harness (3); The outer casing (11) is provided with an openable and closable window facing the head groove of the first bolt (8); the nut (9) is fixedly connected to a conductive connector (4) located away from the window.

12. An automobile characterized by comprising: Includes the charging socket as described in any one of claims 1-11.

Images