Electric vehicle charging adapter

Abstract

The application relates to the field of new energy automobile charging adapters, in particular to an electric automobile charging adapter, which comprises a shell, one end of the shell is provided with a socket connecting part used for being connected with a charging socket on an electric automobile, the other end is provided with a charging gun connecting part used for being connected with a charging gun, a connecting terminal used for connecting the charging socket with the charging gun is arranged in the shell, a locking mechanism is further arranged in the shell, the locking mechanism comprises a transmission rod and a locking part, the transmission rod is arranged in the shell, one end of the transmission rod is located at the socket connecting part and used for being in abutment with the charging socket, the other end of the transmission rod extends to the charging gun connecting part, the locking part is also arranged in the shell and close to the charging gun connecting part, the locking part is connected with the transmission rod, and the locking part is used for being connected with the charging gun, the application improves the problem that the use effect of the charging adapter in the traditional mode is poor, and the use effect of the charging adapter can be improved.

Description

Technical Field

[0001] This application relates to the field of charging adapters for new energy vehicles, and in particular to an electric vehicle charging adapter. Background Technology

[0002] Both ChaoJi and CCS2 are charging standards for new energy vehicles. The ChaoJi standard, primarily developed in China, is a comprehensive DC charging system technology solution that supports high-power charging and offers enhanced safety and compatibility. The CCS2 standard is the mainstream European DC charging standard, based on the IEC 62196 specification, and supports a maximum power of 350kW. To enable CCS2-compliant electric vehicles to use ChaoJi-compliant charging guns, a charging adapter is often needed for standard conversion. This is achieved by installing the adapter onto the charging gun, then plugging the charging gun and adapter together into the electric vehicle's charging dock.

[0003] Electric vehicle charging adapters typically have a plug on one end for plugging into the electric vehicle and a socket on the other end for connecting to the charging gun. The charging socket on the electric vehicle is usually equipped with an electronic lock, which is used to lock the charging gun directly into the charging socket or to lock the charging adapter into the charging socket.

[0004] When using a charging adapter, after plugging it into the electric vehicle's charging socket, the electric vehicle's electronic lock locks the adapter to the vehicle. However, during charging, the charging gun also needs to be locked. Locking the charging gun requires either an additional electronic lock or a mechanical locking structure. Existing mechanical locking structures typically have an unlocking mechanism external to the charging adapter. This structure is susceptible to external forces, causing the charging gun and adapter to detach, potentially posing a safety hazard during charging. Implementing an electronic lock requires a separate power supply and signal transmission module within the charging adapter, increasing its size and impacting portability. Furthermore, if the electric vehicle's charging standard differs from the charging gun's standard, it's impossible to provide an additional power interface to power the electronic lock on the charging adapter. Therefore, traditional charging adapters are not very effective. Utility Model Content

[0005] In order to improve the performance of the charging adapter, this application provides an electric vehicle charging adapter.

[0006] This application provides an electric vehicle charging adapter, which adopts the following technical solution: An electric vehicle charging adapter includes a housing. One end of the housing has a socket connection portion for connecting to a charging socket on an electric vehicle, and the other end has a charging gun connection portion for connecting to a charging gun. A connection terminal for connecting the charging socket and the charging gun is installed inside the housing. The housing also includes a locking mechanism comprising a transmission rod and a locking member. The transmission rod is installed inside the housing, with one end located at the socket connection portion and abutting against the charging socket, and the other end extending to the charging gun connection portion. The locking member is also installed in the housing near the charging gun connection portion, connected to the transmission rod, and used for connecting to the charging gun.

[0007] By adopting the above technical solution and setting a mechanical locking mechanism inside the housing, after the charging gun is plugged into the charging adapter, the charging adapter is then plugged into the charging socket of the electric vehicle. In this way, the charging adapter and the charging gun can be locked by mechanical transmission, and there is no need to consider the influence of external factors on the locking mechanism, thereby improving the use effect of the charging adapter.

[0008] In one specific implementation, the locking element includes a locking pin and a locking spring. The locking pin is installed inside the housing near the charging gun connection and is used to insert into the charging gun. The locking pin is also connected to a transmission rod. The locking spring is installed on the locking pin and is also connected to the housing.

[0009] By adopting the above technical solution, the charging adapter is plugged into the charging socket of the electric vehicle, causing the transmission rod to move under force. This causes the transmission rod to press the locking pin, which in turn compresses the locking spring and extends into the charging gun connection part, connecting with the charging gun located in the charging gun connection part, thereby facilitating the locking of the charging gun.

[0010] In one specific implementation, the transmission rod has an abutting ramp at one end near the locking pin, the abutting ramp being used to abut against the end of the locking pin, and the transmission rod pushing the locking pin to move through the abutting ramp.

[0011] By adopting the above technical solution and setting an anti-collision inclined surface, the transmission rod can push the locking pin downward by relying on the anti-collision inclined surface when it moves, thereby facilitating locking.

[0012] In one specific implementation, the locking pin is spherical at the end near the drive rod.

[0013] By adopting the above technical solution, the end of the locking pin is made into a spherical shape, which reduces the friction between the locking pin and the transmission rod, making it easier for the locking pin to slide along the transmission rod.

[0014] In one specific implementation, a return spring is also installed inside the housing, and the return spring is also connected to the transmission rod.

[0015] By adopting the above technical solution and setting a reset spring, the charging gun can be unlocked when the charging adapter is unplugged after charging is completed, thus facilitating the separation of the charging gun and the charging adapter.

[0016] In one specific implementation, the locking mechanism further includes a pre-locking component, which includes a pre-locking block and a pre-locking spring. The pre-locking block is installed on the inner wall of the housing, and the pre-locking spring is installed inside the housing and connected to the pre-locking block. The pre-locking block is used to position the charging gun.

[0017] By adopting the above technical solution and setting a pre-locking component, when the charging gun is inserted into the charging gun connection part, the pre-locking block is used to pre-lock the charging gun, thereby facilitating the stability of the connection between the charging gun and the charging adapter when moving the charging gun and the charging adapter. At the same time, the pre-locking block holds the charging gun in a position that can engage with the locking pin, so that when the charging adapter is inserted into the charging socket of the electric vehicle, the locking pin can smoothly lock the charging gun.

[0018] In one specific implementation, the end of the pre-locking block away from the pre-locking spring is provided with an arc-shaped top, and the arc-shaped top on the pre-locking block is used to connect to the charging gun.

[0019] By adopting the above technical solution, by setting an arc top at the end of the pre-locking block, the friction between the pre-locking block and the charging gun can be reduced, thereby facilitating the sliding of the pre-locking block along the side wall of the charging gun.

[0020] In one specific implementation, the pre-locking block has a groove on the side near the pre-locking spring that engages with the pre-locking spring, and the middle part of the pre-locking spring is located in the groove and is curved into an arch shape towards the pre-locking block.

[0021] By adopting the above technical solution, and by setting a groove in the pre-locking block, space is provided for the deformation of the pre-locking spring, and the pre-locking spring can always be pressed against the pre-locking block.

[0022] In summary, this application includes at least one of the following beneficial effects: 1. This application incorporates a locking mechanism that allows the charging gun and charging adapter to be easily locked together when charging is required, thereby maintaining charging stability. Furthermore, by placing the locking mechanism inside the charging adapter, the risk of the charging gun and adapter detaching due to accidental contact by external personnel during charging is reduced, thus improving the performance of the charging adapter.

[0023] 2. This application uses a pre-locking component to pre-lock the charging gun and the charging adapter, thereby reducing the risk of the charging adapter and the charging gun becoming detached during the movement of the charging gun. It also ensures that the charging gun is held in a position where it can engage with the locking pin, so that the locking pin can smoothly lock the charging gun when the charging adapter is plugged into the charging socket of the electric vehicle. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the electric vehicle charging adapter of this application.

[0025] Figure 2 This is a schematic diagram of the locking mechanism in Embodiment 1 of this application.

[0026] Figure 3 This is an exploded view of the locking mechanism in Embodiment 1 of this application.

[0027] Figure 4 This is a schematic diagram of the locking mechanism in Embodiment 1 of this application when it is locked.

[0028] Figure 5 This is a schematic diagram of the structure of Embodiment 2 of this application.

[0029] Figure 6 This is a schematic diagram of the pre-locking component in Embodiment 2 of this application.

[0030] Figure 7 This is an exploded view of the pre-locking component in Embodiment 2 of this application.

[0031] Explanation of reference numerals in the attached figures: 1. Housing; 11. Charging gun connection part; 12. Socket connection part; 13. Transmission groove; 14. Locking groove; 15. Pre-locking groove; 2. Locking mechanism; 21. Transmission rod; 211. Transmission pin; 212. Abutting inclined surface; 22. Return spring; 23. Locking element; 231. Locking pin; 232. Locking spring; 24. Pre-locking element; 241. Pre-locking block; 2411. Slide groove; 242. Pre-locking spring. Detailed Implementation

[0032] The present application will be further described in detail below with reference to the accompanying drawings.

[0033] This application discloses an electric vehicle charging adapter.

[0034] Example 1: Reference Figure 1 and Figure 2The device includes a housing 1, with a socket connection part 12 at one end and a charging gun connection part 11 at the other end. The socket connection part 12 is used to connect to a charging socket on an electric vehicle, and an electronic lock groove for connecting to an electronic lock on the electric vehicle is formed on the side wall of the socket connection part 12. The charging gun connection part 11 is used to connect to a charging gun. A connection terminal is also fixedly installed inside the housing 1. The connection terminal is used to electrically connect the charging socket on the electric vehicle to the charging gun, thereby realizing the charging of the electric vehicle. The specific structure, connection principle, connection method, and method of realizing the charging of the electric vehicle of the connection terminal are all existing technologies in the art and will not be described in detail here.

[0035] Reference Figure 2 and Figure 3 The housing 1 also houses a locking mechanism 2, which includes a transmission rod 21 and a locking element 23. The transmission rod 21 is L-shaped, with one end of its horizontal section extending to the charging gun connection 11 and the other end extending to the socket connection 12. The vertical section of the transmission rod 21 is located near the socket connection 12. A contact ramp 212 is provided on the bottom wall of the horizontal section of the transmission rod 21 near the charging gun connection 11. The thickness of the portion of the horizontal section of the transmission rod 21 located to the left of the contact ramp 212 is greater than the thickness of the portion located to the right of the contact ramp 212, connecting the two portions with different thicknesses. A transmission pin 211 is also fixedly installed horizontally on the side wall of the vertical section of the transmission rod 21. One end of the transmission pin 211 passes through the inner wall of the housing 1 and extends into the socket connection 12, while the end of the transmission pin 211 away from the transmission rod 21 is used to contact the charging socket of the electric vehicle. The housing 1 has a transmission groove 13 for the transmission rod 21 to slide in the horizontal direction. A return spring 22 is installed in the transmission groove 13. One end of the return spring 22 abuts against the inner wall of the transmission groove 13 away from the transmission pin 211, and the other end abuts against the side wall of the vertical section of the transmission rod 21.

[0036] Reference Figure 2 and Figure 3 The locking component 23 includes a locking pin 231 and a locking spring 232. The locking pin 231 is slidably installed in the housing 1 along the direction perpendicular to the horizontal section of the transmission rod 21. The housing 1 has a locking groove 14 for the locking pin 231 to slide in. The locking groove 14 connects the transmission groove 13 and the charging gun connection part 11. The end of the locking pin 231 near the horizontal section of the transmission rod 21 is spherical. The spherical end of the locking pin 231 is used to abut against the inclined surface 212. The other end of the locking pin 231 is used to extend out of the locking groove 14 and be inserted into the locking groove on the charging gun. The locking spring 232 is sleeved on the locking pin 231. One end of the locking spring 232 abuts against the locking pin 231, and the other end abuts against the inner wall of the locking groove 14.

[0037] The working principle of this embodiment is as follows: (Refer to...) Figure 2 and Figure 4 When connecting the charging adapter to the charging gun, the charging gun is inserted into the charging gun connection part 11, and then inserted together with the charging adapter into the charging socket of the electric vehicle, so that the socket connection part 12 is connected to the charging socket of the electric vehicle. When the socket connection part 12 contacts the charging socket, the end of the transmission pin 211 abuts against the charging socket. As the socket connection part 12 gradually engages with the charging socket, the transmission pin 211 is pushed towards the locking pin 231, thereby driving the vertical section of the transmission rod 21. The compression return spring 22 is compressed, and at the same time, the horizontal section of the transmission rod 21 moves toward the locking pin 231, so that the abutting inclined surface 212 on the horizontal section of the transmission rod 21 abuts against the spherical end of the locking pin 231, and the end of the locking pin 231 slides along the abutting inclined surface 212 to the bottom wall of the thicker part of the horizontal section, thereby pressing the locking pin 231 downward and compressing the locking spring 232, so that the lower end of the locking pin 231 is inserted into the locking groove of the charging gun, thereby achieving the locking and positioning of the charging gun.

[0038] Example 2: Reference Figure 5 and Figure 6 The difference between this embodiment and Embodiment 1 is that the locking mechanism 2 further includes a pre-locking member 24. Two sets of pre-locking members 24 are provided, and the two sets of pre-locking members 24 are respectively located on both sides of the charging gun connection portion 11 within the housing 1, and the two sets of pre-locking members 24 are symmetrically arranged. Here, we will use one set of pre-locking members 24 as an example for explanation, referring to... Figure 6 and Figure 7 The pre-locking member 24 includes a pre-locking block 241 and a pre-locking spring 242. The pre-locking block 241 is slidably installed in the housing 1 in the horizontal direction. A pre-locking groove 15 for the pre-locking block 241 to extend is provided on the side wall of the housing 1 at the charging gun connection part 11. One end of the pre-locking block 241 extending out of the pre-locking groove 15 is provided with an arc-shaped top. The arc-shaped top is used to abut against the side wall of the charging gun. The pre-locking block 241 is used to be inserted into the locking groove on the side wall of the charging gun. A groove 2411 is vertically formed on the side wall of one end of the pre-locking block 241 located inside the housing 1. An installation groove is formed inside the housing 1 at the location of the pre-locking block 241. The installation groove communicates with the pre-locking groove 15. The pre-locking spring 242 is disposed in the installation groove, and the lower end of the pre-locking spring 242 is fixedly connected to the lower end of the installation groove. The upper end of the pre-locking spring 242 extends upward and is used to abut against the side wall of the installation groove. The middle part of the pre-locking spring 242 is curved into an arch shape towards the pre-locking block 241, and the arched part is located in the groove 2411 of the pre-locking block 241 and abuts against the side wall of the groove 2411.

[0039] The working principle of this application is as follows: When the charging adapter is needed, the charging gun connection part 11 of the charging adapter is first placed on the charging gun. When the end of the charging gun moves to the pre-locking block 241, the end of the charging gun abuts against the side wall at the arc top of the pre-locking block 241, pushing the pre-locking block 241 into the pre-locking groove 15 and squeezing the pre-locking spring 242 until the end of the charging gun passes over the arc top of the pre-locking block 241. When the locking groove on the side wall of the charging gun moves to the pre-locking block 241, the pre-locking block 241 extends out of the pre-locking groove 15 under the action of the pre-locking spring 242 and inserts into the pre-locking groove 15 on the side wall of the charging gun, thereby achieving pre-locking of the charging adapter and the charging gun, so as to reduce the risk of the charging adapter and the charging gun detaching during the movement of the charging gun. At the same time, when the pre-locking member 24 pre-locks the charging adapter and the charging gun, the locking groove at the top of the charging gun is aligned with the locking pin 231.

[0040] Then, the charging gun and charging adapter are plugged into the charging socket of the electric vehicle, so that the socket connection part 12 on the housing 1 of the charging adapter is fitted onto the charging socket of the electric vehicle. During this process, the charging socket abuts against the transmission pin 211 and pushes the transmission pin 211 toward the locking pin 231, thereby causing the transmission pin 211 to drive the vertical section of the transmission rod 21 to move toward the locking pin 231 and compress the return spring 22, and causing the abutting inclined surface 212 on the horizontal section of the transmission rod 21 to move toward the locking pin 231, so that the locking pin 231... The spherical top of 31 abuts against the inclined surface 212 and slides along the inclined surface 212 to the bottom wall of the thicker part of the horizontal section of the transmission rod 21, thereby pressing the locking pin 231 downward, causing the locking pin 231 to compress the locking spring 232, and the lower end of the locking pin 231 extends out of the locking groove 14 and is inserted into the locking groove at the top of the charging gun. At this time, the electronic lock at the charging socket of the electric vehicle also locks the charging adapter to the electric vehicle through the electronic lock groove, thereby realizing the action of locking the charging adapter and the charging gun to the electric vehicle at the same time.

[0041] After charging is complete, the electronic lock on the electric vehicle releases the lock on the charging adapter. The charging adapter is then unplugged, causing the transmission rod 21 to move away from the locking pin 231 under the action of the return spring 22. This pushes the transmission pin 211 back into the socket connection part 12. At the same time, the spherical top of the locking pin 231 slides along the bottom wall of the horizontal section of the transmission rod 21 to the contact slope 212. Then, the locking pin 231 moves upward under the action of the locking spring 232, continuing to contact the contact slope 212. While the transmission rod 21 moves, it slides along the contact slope 212 until the spherical top of the locking pin 231 slides to the bottom wall of the thinner part of the horizontal section of the transmission rod 21. At this time, the locking pin 231 also moves upward to the reset state, and the lower end of the locking pin 231 separates from the locking groove on the top of the charging gun and retracts into the locking groove 14. At this time, the charging gun is pulled out of the charging adapter, causing the side wall of the locking groove on the side wall of the charging gun to press the pre-locking block 241, thereby pushing the pre-locking block 241 into the pre-locking groove 15 and pressing the pre-locking spring 242, so that the charging gun can be pulled out of the charging adapter smoothly. After the charging gun is pulled out of the charging adapter, the pre-locking block 241 is reset under the action of the pre-locking spring 242, thereby continuing to extend out of the pre-locking groove 15.

[0042] The above are preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made to the structure, shape and principle of this application should be included within the scope of protection of this application.

Claims

1. An electric vehicle charging adapter, characterized in that: The device includes a housing (1), one end of which is provided with a socket connection part (12) for connecting to a charging socket on an electric vehicle, and the other end is provided with a charging gun connection part (11) for connecting to a charging gun. A connection terminal for connecting the charging socket and the charging gun is installed inside the housing (1). The housing (1) is also provided with a locking mechanism (2), which includes a transmission rod (21) and a locking member (23). The transmission rod (21) is installed inside the housing (1), and one end of the transmission rod (21) is located at the socket connection part (12) and is used to abut against the charging socket, while the other end extends to the charging gun connection part (11). The locking member (23) is also installed in the housing (1) near the charging gun connection part (11). The locking member (23) is connected to the transmission rod (21) and is used to connect to the charging gun.

2. The electric vehicle charging adapter according to claim 1, characterized in that: The locking component (23) includes a locking pin (231) and a locking spring (232). The locking pin (231) is installed inside the housing (1) near the charging gun connection part (11) and is used to be inserted into the charging gun. The locking pin (231) is also connected to the transmission rod (21). The locking spring (232) is installed on the locking pin (231) and is also connected to the housing (1).

3. The electric vehicle charging adapter according to claim 2, characterized in that: The transmission rod (21) has an abutting slope (212) at one end near the locking pin (231). The abutting slope (212) is used to abut against the end of the locking pin (231), and the transmission rod (21) pushes the locking pin (231) to move through the abutting slope (212).

4. An electric vehicle charging adapter according to claim 2, characterized in that: The locking pin (231) is spherical at the end near the transmission rod (21).

5. An electric vehicle charging adapter according to claim 1, characterized in that: A return spring (22) is also installed inside the housing (1), and the return spring (22) is also connected to the transmission rod (21).

6. An electric vehicle charging adapter according to claim 1, characterized in that: The locking mechanism (2) further includes a pre-locking member (24), which includes a pre-locking block (241) and a pre-locking spring (242). The pre-locking block (241) is installed on the inner wall of the housing (1), and the pre-locking spring (242) is installed inside the housing (1) and connected to the pre-locking block (241). The pre-locking block (241) is used to position the charging gun.

7. An electric vehicle charging adapter according to claim 6, characterized in that: The pre-locking block (241) has an arc-shaped top at one end away from the pre-locking spring (242), and the arc-shaped top on the pre-locking block (241) is used to connect to the charging gun.

8. An electric vehicle charging adapter according to claim 6, characterized in that: The pre-locking block (241) has a groove (2411) on the side near the pre-locking spring (242) that engages with the pre-locking spring (242). The middle part of the pre-locking spring (242) is located in the groove (2411) and is curved in an arch shape towards the pre-locking block (241).

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