Direct current charging terminal and direct current charging socket of new energy automobile

Abstract

The utility model relates to the technical field of new energy automobiles, in particular to a direct current charging terminal and a direct current charging socket for a new energy automobile, which comprise a base body and a sleeve sleeved outside the base body, a plurality of first elastic pieces which are annularly distributed at intervals are arranged at the front end of the base body, and a super welding flat plate is formed at the rear end of the base body; a plurality of second elastic sheets for inwards supporting the first elastic sheets are formed in the sleeve; the base body is further provided with a supporting framework located between the first elastic piece and the super welding flat plate, and the supporting framework is provided with a sealing ring. The utility model relates to a novel structure of a direct-current charging terminal, which not only can ensure the service life and be used for high-power charging, but also can reduce the manufacturing cost of the terminal. Meanwhile, the base body and / or the sleeve can be produced by adopting a stamping process, so that the production efficiency is high, the raw material cost is low, and the production cost of the terminal can be reduced.

Description

Technical Field

[0001] This utility model relates to the field of new energy vehicle technology, specifically to a DC charging terminal and DC charging socket for new energy vehicles. Background Technology

[0002] As a crucial development direction for the current automotive industry, new energy vehicles, especially their charging technology (DC fast charging technology), are of great significance for improving user experience and promoting the widespread adoption of new energy vehicles. In the DC charging system of new energy vehicles, the DC charging socket is a key component, containing two high-power charging terminals: a positive terminal (DC+) and a negative terminal (DC-). The primary function of these two terminals is to transmit electrical energy, enabling fast charging.

[0003] Currently, the positive and negative terminals of DC charging sockets for new energy vehicles on the market are generally made of materials with high conductivity to ensure good power transmission efficiency and safety. However, the manufacturing process of these terminals mainly relies on machining, especially through rod processing. This manufacturing method has the following problems:

[0004] Large material weight: Machining usually requires large raw material dimensions, resulting in a large material weight. This not only increases material costs but also increases energy consumption during the processing.

[0005] Long processing time: Due to the use of machining methods, the processing from raw materials to finished products requires multiple steps, including cutting, shaping, and grinding. These steps all take time to complete, thus extending the production cycle.

[0006] High cost: Due to the large weight of materials, long processing time, and the requirement for high-precision machining, the cost of the entire manufacturing process remains high. Utility Model Content

[0007] This utility model addresses the technical problems existing in the prior art by providing a DC charging terminal and DC charging socket for new energy vehicles to solve the problem of high manufacturing cost of the aforementioned DC charging terminal.

[0008] The technical solution of this utility model to solve the above-mentioned technical problems is as follows: A DC charging terminal for new energy vehicles includes a base and a sleeve sleeved outside the base; the front end of the base is provided with a plurality of first spring pieces arranged in a ring at intervals, and the rear end of the base is formed with a super-welded plate; a plurality of second spring pieces are formed inside the sleeve to support the first spring pieces inward; the base is also provided with a support frame located between the first spring pieces and the super-welded plate, and a sealing ring is provided on the support frame.

[0009] Based on the above technical solution, the present invention can be further improved as follows.

[0010] Furthermore, the base and / or sleeve are formed by stamping sheet metal parts.

[0011] Furthermore, a limiting portion is formed at the end of the first spring piece; and a rolled edge is formed at the end of the sleeve for axially limiting the limiting portion.

[0012] Furthermore, the front end of the second spring is a cantilever structure, and an arc-shaped connection area is formed between it and the sleeve.

[0013] Furthermore, the base has a pre-drilled limiting hole, and the sleeve is formed with a limiting buckle that matches the limiting hole.

[0014] Furthermore, the sealing ring and the supporting frame are integrally injection molded.

[0015] Furthermore, the support frame has several side fixing holes along the circumferential direction.

[0016] Furthermore, the sealing ring has several waterproof ribs formed along its circumference.

[0017] This utility model also provides a DC charging socket for new energy vehicles, including a socket housing and a DC charging terminal for new energy vehicles as described above. The socket housing has a pre-reserved socket cavity. After the DC charging terminal for new energy vehicles is inserted into the socket cavity, a fixing pin for limiting the super-welded plate is provided in the socket housing, and the sealing ring is interference-fitted with the socket cavity. The base and / or sleeve are stamped from sheet metal parts.

[0018] The DC charging terminal for new energy vehicles provided by this utility model has at least the following advantages compared with the prior art:

[0019] 1) This application discloses a new structure for a DC charging terminal, which can ensure service life, be used for high-power charging, and reduce the manufacturing cost of the terminal. At the same time, the base and / or sleeve of this application can be produced by stamping process, which not only has high production efficiency and low raw material cost (only sheet metal parts are needed), but also reduces the terminal production cost. Finally, this application also connects the base and sleeve together by assembly, which not only makes the processing technology of this application simpler, but also makes it convenient for people to replace parts.

[0020] 2) Compared with existing spring-structured machined terminals, this application uses a spring (such as the first spring) to directly contact the pin, which can reduce the contact resistance of the male and female terminals.

[0021] 3) Compared with existing machined slotted terminals, this application increases the contact positive pressure of male and female terminals by supporting springs, thereby reducing contact resistance and providing stable positive pressure throughout the entire life cycle. It can better control the terminal insertion and extraction force, improve the insertion and extraction life of the terminal, make the terminal less prone to failure, and extend its service life.

[0022] 4) Compared with existing O-ring sealed terminals, this application uses a sealing ring with a silicone-coated groove structure, which has better sealing performance; this application can achieve ultrasonic welding to connect with the cable through a super-welding plate, which can reduce the connection resistance between the terminal and the cable, thereby reducing the terminal temperature rise and making it suitable for high-power charging. Attached Figure Description

[0023] Figure 1 This is an exploded view of the charging terminal of this utility model;

[0024] Figure 2 This is a schematic diagram of the assembled charging terminal of this utility model.

[0025] Figure 3 This is a cross-sectional view of the charging terminal of this utility model;

[0026] Figure 4 The present invention relates to a charging socket in Pashto.

[0027] The attached diagram lists the components represented by each number as follows:

[0028] 1. Base; 2. Sleeve; 3. Super-welded plate; 4. Support frame; 5. Sealing ring; 6. Socket housing; 1.1. First spring; 1.2. Limiting part; 1.3. Limiting hole; 2.1. Second spring; 2.2. Rolled edge; 2.3. Arc-shaped connection area; 2.4. Limiting buckle; 4.1. Side fixing hole; 5.1. Waterproof rib; 6.1. Socket cavity; 6.2. Fixing pin. Detailed Implementation

[0029] The principles and features of this utility model are described below with reference to the accompanying drawings. The examples given are only for explaining this utility model and are not intended to limit the scope of this utility model.

[0030] It should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integrally formed structures. Those skilled in the art can understand the specific meaning of these terms in this patent based on the specific circumstances.

[0031] like Figure 1 , Figure 2 and Figure 3As shown, the DC charging terminal for new energy vehicles of this utility model includes a base 1 and a sleeve 2 sleeved outside the base 1; the front end of the base 1 is provided with a plurality of first spring pieces 1.1 arranged in a ring at intervals, and the rear end of the base 1 is formed with a super-welded plate 3; a plurality of second spring pieces 2.1 are formed inside the sleeve 2 to support the first spring pieces 1.1 inward; the base 1 is also provided with a support frame 4 located between the first spring pieces 1.1 and the super-welded plate 3, and a sealing ring 5 is provided on the support frame 4.

[0032] In practical applications, the annular hole formed by multiple first spring pieces 1.1 can serve as a charging port, into which the charging gun pin can be inserted to achieve charging and discharging functions. The first spring piece 1.1 and the second spring piece 2.1 allow the application to have a certain structural rigidity while maintaining a certain degree of elasticity, thus making the application more convenient to use and extending its lifespan. When the charging gun pin is inserted into the charging port, the first spring piece 1.1 expands outward, while the second spring piece 2.1 prevents the first spring piece 1.1 from expanding outward. In this way, after long-term use, the charging port will not deform significantly, resulting in high structural stability. Furthermore, the multiple first spring pieces 1.1 can firmly lock the charging gun pin, increasing the connection stability between the charging gun pin and the application, thereby further improving the structural stability of the application.

[0033] Meanwhile, the base 1 and / or sleeve 2 can be made of sheet metal or other materials, and the sleeve 2 can be made of steel, while the base 1 can be made of high conductivity materials such as copper, zirconium copper, and chromium zirconium copper. Therefore, this application can greatly reduce the amount of materials used and reduce manufacturing costs.

[0034] In one implementation, the base 1 and / or sleeve 2 are formed by stamping sheet metal parts. This approach reduces product costs and meets the demands of fiercely competitive pricing in the new energy vehicle market.

[0035] Specifically, the first spring piece 1.1 has a limiting part 1.2 at its end; the sleeve 2 has a rolled edge 2.2 at its end for axially limiting the limiting part 1.2.

[0036] The second spring 2.1 is also generally in the form of a ring structure. Under the action of the rolled edge 2.2, the first spring 1.1 will not protrude from the second spring 2.1 along the axial direction of the second spring 2.1, thereby improving the structural stability of this application.

[0037] Specifically, the front end of the second spring piece 2.1 has a cantilever structure, and it forms an arc-shaped connection area 2.3 with the sleeve 2. The rear end of the second spring piece 2.1 is an integral part of the sleeve 2. This structure can increase the elasticity of the supporting spring piece 2.1, making the material less prone to yielding and increasing the durability of the supporting spring piece.

[0038] Specifically, the base 1 has a pre-drilled limiting hole 1.3, and the sleeve 2 has a limiting buckle 2.4 that matches the limiting hole 1.3. After the sleeve 2 is installed on the base 1, the limiting buckle 2.4 is pressed into the limiting hole 1.3 by a mold, which can fix the sleeve 2 to the base 1.

[0039] Specifically, when it is necessary to make the base 1, first select a sheet metal part of appropriate size, and then stamp the sheet metal part to stamp out multiple first spring pieces 11 and other components. At this time, the whole is a plate structure; then it is stamped into a cylindrical structure.

[0040] Preferably, when stamping sheet metal parts, structures such as the support frame 4, the limiting hole 1.3, and the limiting part 1.2 can be stamped simultaneously to reduce the stamping process and lower the manufacturing cost of this application.

[0041] Similarly, when it is necessary to make sleeve 2, first select a sheet metal part of appropriate size, and then stamp the sheet metal part to stamp out the second spring piece 2.1 and other components. At this time, the whole is a plate structure; then it is stamped into a cylindrical structure. At this time, sleeve 2 is stamped.

[0042] Preferably, when stamping sheet metal parts, structures such as rolled edges 2.2 and limiting buckles 2.4 can be stamped simultaneously to reduce stamping processes and lower the manufacturing cost of this application.

[0043] In one embodiment, the sealing ring 5 and the supporting frame 4 are integrally injection molded.

[0044] Specifically, the support frame 4 has several side fixing holes 4.1 along its circumference.

[0045] The terminal with the sleeve installed is placed into a liquid injection molding machine to form a silicone sealing ring 3. The support frame 4 supports the sealing ring after the silicone is applied, preventing the sealing ring 5 from being excessively deformed and losing its sealing effect when installed into the socket housing. The side fixing hole 4.1 increases the fluidity of the adhesive during the application process and also serves to fix the sealing ring after the silicone is formed, preventing the sealing ring from detaching from the terminal during assembly.

[0046] In addition, the sealing ring 5 has a plurality of waterproof ribs 5.1 formed along the circumference. The waterproof ribs 5.1 can ensure that the DC charging terminal of the new energy vehicle and the socket cavity 6.1 of the socket housing are in an interference fit state, thereby increasing the safety performance and sealing performance of this application.

[0047] like Figure 4As shown, this utility model also provides a DC charging socket for new energy vehicles, including a socket housing 6 and a DC charging terminal for new energy vehicles as described above. A socket cavity 6.1 is pre-formed within the socket housing 6. After the DC charging terminal for new energy vehicles is inserted into the socket cavity 6.1, a fixing pin 6.2 is provided within the socket housing 6 to limit the position of the super-welded plate 3, and the sealing ring 5 is interference-fitted with the socket cavity 6.1. The fixing pin 6.2 can abut against the super-welded plate 3 to limit the position of the DC charging terminal.

[0048] In actual operation, the DC charging socket for new energy vehicles in this application may include all or part of the structure described above for the DC charging terminal for new energy vehicles. For specific limitations on the DC charging socket for new energy vehicles, please refer to the limitations on the DC charging terminal for new energy vehicles described above, which will not be repeated here.

[0049] Although preferred embodiments of the present invention have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of the present invention.

[0050] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. A DC charging terminal for new energy vehicles, characterized in that, The system includes a base (1) and a sleeve (2) fitted outside the base (1); the front end of the base (1) is provided with a plurality of first spring pieces (1.1) arranged in a ring, and the rear end of the base is formed with a super-welded plate (3); the sleeve (2) is formed with a plurality of second spring pieces (2.1) that support the first spring pieces (1.1) inward. When the charging gun pin is inserted, the first spring piece (1.1) will expand outward, while the second spring piece (2.1) will prevent the first spring piece (1.1) from expanding outward. The second spring piece (2.1) is in a ring structure. Under the action of the rolled edge (2.2), the first spring piece (1.1) will not pass through the second spring piece (2.1) along the axial direction of the second spring piece (2.1); the base (1) is also provided with a support frame (4) located between the first spring piece (1.1) and the super-welded plate (3), and a sealing ring (5) is provided on the support frame (4).

2. The DC charging terminal for new energy vehicles according to claim 1, characterized in that, The base (1) and / or sleeve (2) are formed by stamping sheet metal parts.

3. The DC charging terminal for new energy vehicles according to claim 1 or 2, characterized in that, The first spring (1.1) has a limiting part (1.2) at its end; the sleeve (2) has a rolled edge (2.2) at its end for axially limiting the limiting part (1.2).

4. The DC charging terminal for new energy vehicles according to claim 1 or 2, characterized in that, The front end of the second spring (2.1) is a cantilever structure, and an arc-shaped connection area (2.3) is formed between it and the sleeve (2).

5. The DC charging terminal for new energy vehicles according to claim 1 or 2, characterized in that, The base (1) has a pre-drilled limiting hole (1.3), and the sleeve (2) has a limiting buckle (2.4) that is adapted to the limiting hole (1.3).

6. The DC charging terminal for new energy vehicles according to claim 1, characterized in that, The sealing ring (5) and the supporting frame (4) are integrally injection molded.

7. The DC charging terminal for new energy vehicles according to claim 6, characterized in that, The supporting frame (4) has several side fixing holes (4.1) along the circumference.

8. The DC charging terminal for new energy vehicles according to claim 6, characterized in that, The sealing ring (5) has several waterproof ribs (5.1) formed along the circumference.

9. A DC charging socket for new energy vehicles, characterized in that, The device includes a socket housing (6) and a new energy vehicle DC charging terminal as described in any one of claims 1-8. The socket housing (6) has a reserved socket cavity (6.1). After the new energy vehicle DC charging terminal is inserted into the socket cavity (6.1), a fixing pin (6.2) for limiting the super-welded plate (3) is provided in the socket housing (6), and the sealing ring (5) is interference-fitted with the socket cavity (6.1).

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