Undercarriage charging device and vehicle

Abstract

The utility model discloses a kind of vehicle bottom charging devices and vehicles, the vehicle bottom charging device includes: connecting socket, the connecting socket is suitable for being fixed to vehicle body;Charging assembly, the charging assembly includes connecting plug, moving structure and lifting structure, the connecting plug is slidably installed in the moving structure, the moving structure is liftablely installed in the lifting structure, and the connecting plug is used to be inserted with the connecting socket Plug-in cooperation.The vehicle bottom charging device of the utility model, by setting the connecting plug slidably connected in moving structure, and by lifting structure and moving structure connection, can make lifting structure drive moving structure and its connecting connecting plug lift, so that connecting plug and connecting socket are automatic plug-in cooperation, and connecting plug and connecting socket are automatically aligned, so that plug-in cooperation efficiency is high, degree of automation operation is high, reduces manual operation, to reduce the risk of electric shock, improve vehicle use safety and the charging efficiency of vehicle.

Description

Technical Field

[0001] This utility model relates to the field of vehicle charging technology, and in particular to a vehicle under-car charging device and a vehicle having the vehicle under-car charging device. Background Technology

[0002] Currently, there are two common solutions for charging batteries in new energy vehicles. The first solution is to use a DC / AC charging gun from a charging station to charge the battery through a slow or fast charging port. This charging technology is relatively common in the market, but it requires manual handling of the charging gun, which is complex and cumbersome. The charging cable is long and heavy, which is not conducive to user operation, and there is also a certain risk of electric shock in some cases. The second solution is to use wireless charging technology under the vehicle. This charging technology is relatively rare in the market. It requires the addition of an electromagnetic conversion device and a coil device under the vehicle, which leads to higher overall costs. Furthermore, due to the use of electromagnetic induction, the charging efficiency decreases and the heat dissipation increases. Also, when there is a misalignment between the vehicle's charging port and the charging plug, it will cause charging difficulties, indicating room for improvement. Utility Model Content

[0003] This utility model aims to solve at least one of the technical problems existing in the prior art. To this end, this utility model proposes a vehicle under-body charging device, which has a simple structure and low cost. It charges the battery by connecting a socket and a plug, and the plug and socket automatically align, resulting in high connection efficiency and a high degree of automation. This reduces manual operation, thereby reducing the risk of electric shock, improving vehicle safety, and increasing both operating and charging efficiency.

[0004] According to an embodiment of the present utility model, a vehicle under-body charging device includes: a connecting socket adapted to be fixed relative to the vehicle body; and a charging component including a connecting plug, a movable structure, and a lifting structure, wherein the connecting plug is slidably mounted on the movable structure, the movable structure is liftably mounted on the lifting structure, and the connecting plug is used to plug into the connecting socket.

[0005] According to the vehicle undercarriage charging device of this utility model embodiment, the battery can be charged by connecting a connector socket to the undercarriage and engaging with the connector plug of the charging device. Furthermore, by slidably connecting the connector plug to the movable structure, automatic alignment of the connector plug and connector socket is achieved. Additionally, by connecting a lifting structure to the movable structure, the lifting structure drives the movable structure and its connected connector plug to rise and fall, resulting in automatic engagement of the connector plug and connector socket. The entire process is highly automated, reducing the risk of electric shock and improving vehicle safety. It also improves engagement efficiency, reduces manual operation, and offers higher charging efficiency compared to wireless charging. This reduces heat dissipation, improves the accuracy and efficiency of charging operations, and the overall structure is simple, lower in cost, and more practical.

[0006] According to some embodiments of the present invention, the undercarriage charging device has a movable opening formed in the movable structure, and the connecting plug has a movable part that passes through the movable opening and is adapted to slide in at least two directions within the movable opening.

[0007] According to some embodiments of the present utility model, the undercarriage charging device has a movable cavity formed in the movable structure, and the movable port communicates with the movable cavity.

[0008] The connector includes a first movable body, which is connected to the movable part and is movably installed in the movable cavity.

[0009] According to some embodiments of the present invention, the undercarriage charging device includes a second movable body, which is connected to the first movable body via the movable part, and the second movable body is movably supported on the outer surface of the movable structure.

[0010] According to some embodiments of the vehicle under-car charging device of the present utility model, the movable opening is constructed as a circular opening, the movable part is constructed as a movable cylinder, the outer diameter of the movable cylinder is smaller than the inner diameter of the circular opening, and a movable gap is formed between the outer peripheral wall of the movable cylinder and the inner peripheral wall of the circular opening.

[0011] According to some embodiments of the present invention, the undercarriage charging device includes a lifting structure comprising a lifting base and a lifting drive body, the movable structure being mounted above the lifting base, and the lifting drive body being used to drive the movable structure to lift.

[0012] According to some embodiments of the present invention, the undercarriage charging device is configured as a lifting cylinder mounted on the lifting base, and the output end of the lifting cylinder is connected to the movable structure.

[0013] According to some embodiments of the present invention, the undercarriage charging device has a first plug-in portion, a guide portion arranged around the first plug-in portion, and a second plug-in portion adapted to be guided along the guide portion to be plugged into and connected with the first plug-in portion.

[0014] According to some embodiments of the present invention, the undercarriage charging device has the following features: the first plug-in portion is configured as a plug-in interface, the guide portion is configured as a tapered guide surface, and the inner diameter of the tapered guide surface gradually decreases along the direction close to the first plug-in portion.

[0015] The connector also includes a rolling element located at the end of the second plug portion near the first plug portion, and the second plug portion is adapted to roll against the tapered guide surface by the rolling element.

[0016] This utility model also proposes a vehicle.

[0017] The vehicle according to the present invention includes the undercarriage charging device of any of the above embodiments.

[0018] The vehicle and the aforementioned undercarriage charging device have the same advantages over the prior art, which will not be repeated here.

[0019] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0020] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0021] Figure 1 This is a structural schematic diagram of the under-vehicle charging device according to an embodiment of the present utility model;

[0022] Figure 2 This is a cross-section of the undercarriage charging device according to an embodiment of the present invention. Figure 1 ;

[0023] Figure 3 This is a cross-section of the undercarriage charging device according to an embodiment of the present invention. Figure 2 ;

[0024] Figure 4 This is a cross-sectional view of the undercarriage charging device according to an embodiment of the present invention, showing the connection socket and charging components in a separated state;

[0025] Figure 5This is a cross-sectional view of the connection socket and charging component of the undercarriage charging device according to an embodiment of the present utility model in the plugged-in state.

[0026] Figure label:

[0027] Under-vehicle charging device 100,

[0028] The components include: a connector 1, a first plug-in part 11, a guide part 12, a charging component 2, a connector plug 21, a second plug-in part 211, a rolling element 212, a movable part 213, a first movable body 214, a second movable body 215, a first wire hole 216, a lifting structure 22, a lifting base 221, a second wire hole 2211, a lifting drive body 222, a cylinder rod 2221, a moving structure 23, a movable opening 231, a movable cavity 232, a movable gap 233, a wire-passing rubber ring 24, a rubber ring wire hole 241, a first sliding steel ball 25, and a second sliding steel ball 26. Detailed Implementation

[0029] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0030] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicating the orientation or positional relationship shown in the accompanying drawings, 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, and therefore should not be construed as a limitation of this utility model. Furthermore, features defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0031] In the description of this utility model, 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 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.

[0032] Unless otherwise specified, the front-back direction in this application refers to the longitudinal direction of the vehicle, i.e., the X direction; the left-right direction refers to the lateral direction of the vehicle, i.e., the Y direction; and the up-down direction refers to the vertical direction of the vehicle, i.e., the Z direction.

[0033] The following is for reference. Figures 1-5 The vehicle under-car charging device 100 according to an embodiment of the present utility model has a simple structure and low cost. It charges the battery by connecting the connector 1 and the connector 21. The connector 21 and the connector 1 are automatically aligned, which makes the connection efficiency high and the degree of automation high. It reduces manual operation, thereby reducing the risk of electric shock, improving vehicle safety, and improving operation efficiency and charging efficiency.

[0034] like Figures 1-5 As shown, a vehicle undercarriage charging device 100 according to an embodiment of the present invention includes: a connection socket 1 and a charging component 2.

[0035] The connection socket 1 is suitable for being fixed relative to the vehicle body. The charging component 2 includes a connection plug 21, a moving structure 23 and a lifting structure 22. The connection plug 21 is slidably mounted on the moving structure 23, and the moving structure 23 is vertically mounted on the lifting structure 22. The connection plug 21 is used to plug into the connection socket 1.

[0036] It should be noted that with the increasing use of new energy vehicles, these vehicles need to be charged when their battery is low. Vehicles can be charged at charging stations using a DC or AC charging gun inserted into the charging port, or wirelessly charged from under the vehicle. In this embodiment, the under-vehicle charging device 100 can automatically charge the vehicle to replenish its battery.

[0037] Specifically, the under-vehicle charging device 100 is located at the bottom of the vehicle. The under-vehicle charging device 100 includes a connection socket 1, which can be fixed relative to the vehicle body. For example, the connection socket 1 can be directly installed near the chassis of the vehicle's trunk. The connection socket 1 is used for electrical connection to the charging terminal, enabling charging of the vehicle at the chassis of the trunk. Furthermore, placing the connection socket 1 near the chassis of the trunk enhances the safety of whole-vehicle charging and reduces the risk of direct safety hazards to the passenger compartment. The connection socket 1 can also be installed in other locations on the vehicle, allowing for selective installation based on the actual space layout.

[0038] The connection socket 1 can be detachably connected to the bottom of the vehicle using fasteners such as bolts, or the connection socket 1 can be connected and fixed to the bottom of the vehicle using methods such as plugging or snapping, as long as the installation reliability of the connection socket 1 can be guaranteed.

[0039] Furthermore, the under-vehicle charging device 100 also includes a charging component 2, which is used to electrically connect with the connection socket 1. The charging component 2 includes a connection plug 21, which is plugged into the connection socket 1 and can be electrically connected to a charging pile to charge the vehicle.

[0040] The charging component 2 also includes a lifting structure 22 and a moving structure 23. The moving structure 23 has a moving function, and the lifting structure 22 has a lifting function. The connecting plug 21 is slidably connected to the moving structure 23, so that the connecting plug 21 can slide through the moving structure 23. The moving structure 23 is located on the upper side of the lifting structure 22, and the moving structure 23 is installed on the lifting structure 22 in a lifting manner. That is, the moving structure 23 is connected to the lifting structure 22, and the lifting structure 22 can drive the moving structure 23 to lift, thereby realizing the lifting of the connecting plug 21. The connecting plug 21 is used to plug into the connecting socket 1, and the electrical connection between the connecting plug 21 and the connecting socket 1 is realized through plugging.

[0041] For example, the movable structure 23 can be detachably connected to the lifting structure 22 by fasteners such as bolts.

[0042] The movable structure 23 can be configured to move in one direction, that is, to drive the connector 21 to move in one direction. The movable structure 23 can also be configured to move in at least two directions, that is, to drive the connector 21 to move in at least two different directions. The configuration is not limited and can be flexibly selected.

[0043] In actual use, when the vehicle's battery is low, the vehicle is parked at the charging equipment. The lifting structure 22 drives the moving structure 23 and the connecting plug 21 to move upward. The moving structure 23 can also drive the connecting plug 21 to slide and engage with the connecting socket 1 at the bottom of the vehicle to charge the battery. When charging is complete, the lifting structure 22 drives the moving structure 23 and the connecting plug 21 to move downward and disengage from the connecting socket 1 to end the charging process.

[0044] Currently, there are two common solutions for charging batteries in new energy vehicles. Solution one involves using a DC / AC charging gun from a charging station to charge the battery through a slow or fast charging port. This charging technology is relatively common in the market, but it requires manual handling of the charging gun, making the operation complex and cumbersome. The charging cable is long and heavy, which is inconvenient for users, and in some cases, there is a risk of electric shock. Solution two uses wireless charging technology under the vehicle. This technology is less common in the market. It requires adding an electromagnetic conversion device and an undercarriage coil device to the vehicle body, resulting in higher overall costs. Furthermore, due to the use of electromagnetic induction, charging efficiency decreases and heat dissipation increases. While automatic parking technology has made significant improvements, there are still slight deviations after the vehicle is parked in the garage; or the installation of the undercarriage charging base may also be misaligned, increasing the difficulty of charging.

[0045] According to the embodiment of the present invention, the undercarriage charging device 100 can charge the battery by connecting a connector socket 1 to the undercarriage and engaging with the connector plug 21 of the charging device. The connector plug 21 is slidably connected to the moving structure 23, and a lifting structure 22 is connected to the moving structure 23. The lifting structure 22 drives the moving structure 23 and the connected connector plug 21 to rise and fall, resulting in automatic engagement between the connector plug 21 and the connector socket 1. This high degree of automation reduces the risk of electric shock, improves vehicle safety, and increases engagement efficiency, reducing manual operation. The charging efficiency is also higher than wireless charging, reducing heat dissipation. Automatic alignment solves the problem of misalignment between the connector plug 21 and the connector socket 1, improving the accuracy and efficiency of the charging operation. Furthermore, the overall structure is simple, lower in cost, and more practical.

[0046] In some embodiments, the movable structure 23 has a movable opening 231, and the connector 21 has a movable part 213 that passes through the movable opening 231 and is adapted to slide in at least two directions within the movable opening 231.

[0047] In this way, a sliding connection can be achieved between the connector 21 and the movable structure 23, and the position of the connector 21 can be adjusted in at least two directions. That is, by adjusting the position of the connector 21, the accuracy and efficiency of the connector 21 and the connector socket 1 can be improved.

[0048] Specifically, the movable structure 23 has a movable opening 231 on the side near the connector plug 21. The movable opening 231 has a certain amount of space for movement. The connector plug 21 has a movable part 213. The movable opening 231 has an open side. The movable part 213 passes through the movable opening 231 from the open side. The space for movement of the movable opening 231 is larger than the outer dimensions of the movable part 213, so that the movable part 213 can move within the movable opening 231. Furthermore, the movable part 213 is configured to slide in at least two directions within the movable opening 231. That is, the movable part 213 can slide in two directions within the movable opening 231, or it can slide in three or four directions. The configuration is diverse and can be selectively adjusted according to the actual charging environment to improve the insertion efficiency of the connector plug 21 and the connector socket 1, thereby improving the charging efficiency.

[0049] Among these, at least two directions can be horizontal, and at least two directions can intersect, meaning at least two directions are distributed along any non-parallel angle. Alternatively, at least two directions can be set to be perpendicular. When the movable part 213 has two directions of movement, and these two directions are perpendicular to each other (i.e., one direction can be X-axis, the other can be Y-axis, and the lifting direction is Z-axis), its three directions are as follows: Figure 1 As indicated by the arrow.

[0050] Furthermore, the shape of the movable opening 231 can be constructed as a circle, a square, etc., and the movable part 213 is configured to match the shape of the movable opening 231. The shape of the movable part 213 can also be constructed as a circle, a square, etc.

[0051] In some embodiments, the movable structure 23 has a movable cavity 232, and the movable port 231 communicates with the movable cavity 232. The connecting plug 21 includes a first movable body 214, which is connected to the movable part 213 and is movably installed in the movable cavity 232.

[0052] Specifically, the movable cavity 232 is used to connect the movement of the plug 21, and the movable structure 23 is formed with a movable opening 231. The movable opening 231 is connected to the movable cavity 232. For example, the movable opening 231 can be connected to the upper side of the movable cavity 232. The size of the movable cavity 232 is larger than the size of the movable opening 231. The movable opening 231 and the movable cavity 232 can be formed in one step, saving processing time.

[0053] The connector 21 includes a first movable body 214, which is located at the end of the connector 21 and is connected to the movable part 213. For example, the movable part 213 can be connected to the upper side of the first movable body 214, and the size of the first movable body 214 is larger than the size of the movable part 213 and larger than the size of the movable opening 231. Thus, when the connector 21 is connected to the movable structure 23, the movable part 213 passes through the movable opening 231, and the first movable body 214 is accommodated in the movable cavity 232. At least a part of the connector 21 can be installed in the movable structure 23, and the first movable body 214 can move in the movable cavity 232, allowing the connector 21 to be slidably connected to the movable structure 23. In actual design, the first movable body 214 can slide along the two side walls of the movable cavity 232, which can improve the stability of the movement of the first movable body 214 in the movable cavity 232.

[0054] In practical applications, the movable part 213 and the first movable body 214 can slide together relative to the moving structure 23. That is, the first movable body 214 can also slide in at least two directions within the movable cavity 232. During the movement of the first movable body 214, the first movable body 214 is always located within the movable cavity 232 to improve the sliding reliability and sliding stability of the movable part 213 and the first movable body 214, thereby improving the reliability of the position adjustment of the connector 21.

[0055] The movable cavity 232 can be constructed in the shape of a circle, a square, etc. The first movable body 214 is configured to match the shape of the movable cavity 232, and the shape of the first movable body 214 can also be constructed in the shape of a circle, a square, etc.

[0056] In some embodiments, the connector 21 further includes a second movable body 215, which is connected to the first movable body 214 via a movable part 213, and the second movable body 215 is movably supported on the outer surface of the movable structure 23.

[0057] Specifically, the second movable body 215 is connected to the first movable body 214 through the movable part 213. That is, the second movable body 215 is connected to one end of the movable part 213, and the first movable body 214 is connected to the other end of the movable part 213. In this embodiment, the second movable body 215 can be connected to the upper side of the movable part 213, and the first movable body 214 can be connected to the lower side of the movable part 213. The second movable body 215, the movable part 213, and the first movable body 214 can be integrally formed or connected by welding or other means. The structure is simple and easy to process.

[0058] The second movable body 215 is located on the outer surface of the movable structure 23 and is slidably connected to the outer surface of the movable structure 23, enabling the second movable body 215 to slide along the outer surface of the movable structure 23. In practical applications, the second movable body 215, the movable part 213, and the first movable body 214 can slide together relative to the movable structure 23, that is, the second movable body 215 can also slide on the outer surface of the movable structure 23 in at least two directions.

[0059] Therefore, by having the first movable body 214 movable within the movable cavity 232, the movable part 213 movable within the movable opening 231, and the second movable body 215 slidable on the outer surface of the moving structure 23, the first movable body 214 and the second movable body 215 can respectively contact and slide with the moving structure 23. This improves the sliding reliability and stability between the connector 21 and the moving structure 23, thereby enhancing the reliability of the connector 21's position adjustment. This allows the connector 21 to be quickly plugged into the connector socket 1, improving overall operational efficiency. The entire process is automatically aligned, requiring no manual labor and saving charging costs.

[0060] In some embodiments, the movable opening 231 is constructed as a circular opening, the movable part 213 is constructed as a movable cylinder, the outer diameter of the movable cylinder is smaller than the inner diameter of the circular opening, and a movable gap 233 is formed between the outer peripheral wall of the movable cylinder and the inner peripheral wall of the circular opening.

[0061] In this way, by setting the movable opening 231 to be a circular opening and the movable part 213 to be a movable cylinder, and the movable cylinder passing through the movable opening 231, an annular movable gap 233 can be formed between the movable cylinder and the circular opening. This allows the movable cylinder to slide in multiple directions within the circular opening, increasing the range of motion of the movable cylinder, and thus increasing the adjustment range of the connector 21, so as to realize the possibility of plugging the connector 21 and the connector socket 1 into different tilt positions.

[0062] Specifically, the movable part 213 and the movable opening 231 are matched in shape. The movable opening 231 can be constructed as a circular opening, and the movable part 213 is constructed as a movable cylinder. The outer diameter of the movable cylinder is smaller than the inner diameter of the circular opening. The movable cylinder passes through the circular opening, so that a movable gap 233 can be formed between the two. The movable gap 233 is annular, so that the movable cylinder can move in any direction within the movable gap 233. Furthermore, the movable cavity 232 and the first movable body 214 are matched in shape. The movable cavity 232 is constructed as a cylindrical cavity, and the first movable body 214 can be constructed as a cylindrical movable body. The inner diameter of the cylindrical cavity is larger than the outer diameter of the cylindrical movable body, which can form a movable space between the two. The movable space is annular, which allows the first movable body 214 to move in any direction within the movable space. The radial dimension of the movable space is greater than or equal to the radial dimension of the movable gap 233. In this way, the first movable body 214 and the movable part 213 can satisfy the same range of motion, and the first movable body 214 and the movable cavity 232 can be reliably slidably fitted together.

[0063] Therefore, when the vehicle is parked in the charging position and the connector 1 and connector 21 are not aligned in any circumferential direction, the center alignment of the connector 21 and connector 1 can be adjusted by the movement of the movable part 213 in the movable opening 231 and the movement of the first movable body 214 in the movable cavity 232, so that the connector 21 and connector 1 can be plugged in and mated.

[0064] It should be noted that the movable structure 23 can be constructed as a disc structure, with a communicating movable opening 231 and a movable cavity 232. The connecting plug 21 may include a chuck structure, which includes a second movable body 215, a movable part 213, and a first movable body 214 connected in sequence. The movable opening 231 is used for the passage and movement of the movable part 213, and can also slide and limit the connecting plug 21. Figure 2 and Figure 3As shown, the upper and lower sidewalls of the movable cavity 232 slide in conjunction with the upper and lower sidewalls of the first movable body 214. For example, the first movable body 214 and the movable cavity 232 can roll against each other through the first sliding steel balls 25. Multiple first sliding steel balls 25 are respectively arranged on the upper and lower sides of the first movable body 214 and are spaced apart along the circumference of the first movable body 214. In this way, the upper side of the first movable body 214 rolls against the upper sidewall of the movable cavity 232 through the multiple first sliding steel balls 25, and the lower side of the first movable body 214 rolls against the lower sidewall of the movable cavity 232 through the multiple first sliding steel balls 25, which can improve the movement stability of the first movable body 214 in the movable cavity 232. Furthermore, the disc structure includes an upper surface, and the second movable body 215 slides in conjunction with the upper surface of the disc structure. For example, the second movable body 215 and the upper surface of the disc structure can roll and press against each other through the second sliding steel ball 26. A plurality of second sliding steel balls 26 are arranged on the lower side of the second movable body 215 at intervals along the circumference of the second movable body 215. In this way, the lower side of the second movable body 215 rolls and presses against the upper surface of the disc structure through the plurality of second sliding steel balls 26.

[0065] Therefore, by rolling contact, the friction between the first movable body 214 and the movable cavity 232 can be reduced, and the friction between the second movable body 215 and the upper surface of the disc structure can also be reduced, improving the movement efficiency of the first movable body 214 and the second movable body 215, thereby improving the position adjustment efficiency of the connector 21. Furthermore, automatic calibration between the connector 21 and the connector socket 1 can be achieved, improving charging efficiency and charging reliability. The first movable body 214 and the second movable body 215 of the connector 21 can be slidably connected to the moving structure 23 via slide rails or other means.

[0066] In some embodiments, the lifting structure 22 includes a lifting base 221 and a lifting drive 222, and the movable structure 23 is mounted above the lifting base 221. The lifting drive 222 is used to drive the movable structure 23 to lift.

[0067] Specifically, such as Figure 2 As shown, the lifting base 221 serves as the support and mounting part for the lifting structure 22. The lifting drive body 222 has a lifting function. The lifting base 221 is used to mount the lifting drive body 222, which can be detachably connected to the lifting base 221, enabling the connection and fixation of the fixed end of the lifting drive body 222. The movable structure 23 is located above the lifting base 221, and the movable end of the lifting drive body 222 is connected to the movable structure 23. The lifting drive body 222 can drive the lifting and lowering of the movable structure 23. The connecting plug 21 is slidably connected to the side of the movable structure 23 away from the lifting drive body 222, and its position close to the connecting socket 1 improves the insertion and engagement efficiency between the connecting plug 21 and the connecting socket 1.

[0068] Therefore, through the above configuration, the lifting drive body 222 can drive the lifting of the moving structure 23 and the connected plug 21, and the moving structure 23 can adjust the position of the connected plug 21 relative to the connected socket 1 so that the connected plug 21 can be quickly plugged into the connected socket 1, thereby improving the overall operating efficiency. The whole process is automatically aligned, without the need for manpower, and saves charging costs.

[0069] In some embodiments, the lifting drive 222 is configured as a lifting cylinder mounted on the lifting base 221, and the output end of the lifting cylinder is connected to the moving structure 23.

[0070] Specifically, the lifting cylinder is the power source for the lifting drive body 222, used to drive the moving structure 23. The output end of the lifting cylinder is connected to the moving structure 23, and one side of the moving structure 23 is connected to the output end of the lifting cylinder. In this embodiment, the lower side of the moving structure 23 is connected to the output end of the lifting cylinder, allowing the output end of the lifting cylinder to drive the moving structure 23 to move up and down. The upper side of the moving structure 23 is connected to the connector 21, allowing the lifting cylinder to drive the connector 21 to move up and down. The lower side of the moving structure 23 can be detachably connected to the lifting drive body 222 using bolts or other fasteners, ensuring the reliability of the connector 21 connection.

[0071] It should be noted that the lifting cylinder is arranged vertically and includes a cylinder body, a piston, and a cylinder rod 2221. Compressed air drives the piston and cylinder rod 2221 to move relative to the cylinder body. The cylinder body is detachably connected to the lifting base 221, and the output end of the cylinder rod 2221 is connected to the moving structure 23. This allows the cylinder rod 2221 to drive the moving structure 23 to rise and fall. The number of cylinder rods 2221 can be one, two, etc. In this embodiment, there are four cylinder rods 2221, each of which can be connected to the moving structure 23.

[0072] Therefore, through the above configuration, the lifting cylinder can drive the moving structure 23 to rise, thereby driving the connector 21 closer to the connector socket 1 to achieve the insertion and engagement of the connector 21 and the connector socket 1. Furthermore, the lifting cylinder can drive the moving structure 23 to descend, thereby separating the connector 21 from the connector socket 1. The entire drive structure is simple, low-cost, and provides good driving performance.

[0073] Furthermore, the lifting drive unit 222 can also be constructed as a motor and a gear rack. The motor drives the gear rack to move, which can also achieve linear motion. Its configuration is diverse and can be flexibly selected.

[0074] It should be noted that, for example Figure 1 and Figure 2 As shown, the connector 21 is connected to the lifting base 221 via a retractable wire guide ring 24, and the wire guide ring 24 has a wire hole 241. Thus, when the lifting cylinder drives the connector 21 to move away from the lifting base 221, the wire guide ring 24 gradually extends; when the lifting cylinder drives the connector 21 to move closer to the lifting base 221, the wire guide ring 24 gradually contracts. The wire guide ring 24 has a wire hole 241 inside for threading the wire harness of the connector 21, so as to enclose the wire harness inside the wire guide ring 24.

[0075] The cable guide ring 24 can be supported by materials such as rubber, or even corrugated tubing. Both ends of the cable guide ring 24 can be connected to the connector 21 and the lifting base 221 respectively via adhesive bonding, or it can be integrally formed with the lifting base 221.

[0076] Furthermore, a first wire-passing hole 216 is provided in the middle of the connector plug 21, and a second wire-passing hole 2211 is provided in the lifting base 221. The first wire-passing hole 216, the rubber ring wire-passing hole 241, and the second wire-passing hole 2211 are connected in sequence, so that the wire harness of the connector plug 21 can pass through the first wire-passing hole 216, the rubber ring wire-passing hole 241, and the second wire-passing hole 2211 in sequence to connect with the charging device. The wire harness can be accommodated in the under-vehicle charging device 100 to realize the arrangement of the wire harness, protect the wire harness, avoid the wire harness being exposed to the outside world and causing wear and tear on the external structure, reduce the damage to the wire harness, extend the service life of the connector plug 21, and keep the overall structure of the under-vehicle charging device 100 neat and orderly, and facilitate the movement and transportation of the under-vehicle charging device 100.

[0077] In some embodiments, the connector 1 is provided with a first plug portion 11 and a guide portion 12 distributed around the first plug portion 11. The connector plug 21 is provided with a second plug portion 211 and the second plug portion 211 is adapted to be guided along the guide portion 12 to be plugged into and connected with the first plug portion 11.

[0078] Specifically, by providing a guide portion 12 and a first plug portion 11 in the connecting socket 1, when the second plug portion 211 mates with the first plug portion 11, the second plug portion 211 can move along the guide portion 12, ensuring a reliable connection between the second plug portion 211 and the first plug portion 11, thus improving the efficiency and accuracy of the connection. Furthermore, it protects the first plug portion 11 and the second plug portion 211, extending the service life of the connecting socket 1 and the connecting plug 21.

[0079] In actual design, such as Figure 1 and Figure 2As shown, the first plug portion 11 is located in the middle of the connector socket 1. The guide portion 12 and the first plug portion 11 are distributed along the thickness direction of the connector socket 1. For example, the distribution direction of the guide portion 12 and the first plug portion 11 is distributed along the lifting direction of the connector plug 21. The guide portion 12 is distributed close to the connector plug 21 and surrounds the first plug portion 11, so that the outer periphery of the first plug portion 11 forms a certain guiding effect at the guide portion 12. The guide portion 12 is open towards the second plug portion 211 at the end away from the first plug portion 11, which is conducive to the second plug portion 211 being plugged in and mated with the first plug portion 11 from the open side.

[0080] Thus, when the second plug-in part 211 is plugged into the first plug-in part 11, and when the centers of the second plug-in part 211 and the first plug-in part 11 are not aligned, the second plug-in part 211 can move along the guide part 12 while being driven by the lifting structure 22 and the moving structure 23, so that the second plug-in part 211 can be guided to be plugged into and connected with the first plug-in part 11.

[0081] Therefore, the guiding function of the guide part 12 can improve the possibility of the second plug-in part 211 and the first plug-in part 11 to adapt to various situations of vehicle parking. Furthermore, the cooperation of the moving structure 23 and the lifting structure 22 can improve the efficiency and reliability of automatic vehicle charging and expand the applicability of the under-vehicle charging device 100.

[0082] In some embodiments, the first plug-in portion 11 is configured as a plug-in interface, and the guide portion 12 is configured as a tapered guide surface. The inner diameter of the tapered guide surface is configured to gradually decrease along the direction close to the first plug-in portion 11. That is, the inner diameter of the tapered guide surface is larger near the second plug-in portion 211, which is beneficial to improve the plug-in fit between the second plug-in portion 211 and the first plug-in portion 11. The inner diameter of the tapered guide surface is smaller near the plug-in interface, which allows the second plug-in portion 211 to be guided towards the first plug-in portion 11 along the tapered guide surface after entering the guide portion 12, so that the second plug-in portion 211 can be plugged into the plug-in interface.

[0083] Specifically, such as Figure 1 and Figure 2As shown, the connector is open towards the connector 21, meaning the connector can be opened downwards. The guide portion 12 is constructed as a tapered guide surface, which is distributed around the connector and extends circumferentially. The inner diameter of the tapered guide surface gradually decreases towards the first connector portion 11 and can be connected to the connector. The tapered guide surface is located below the connector, meaning the cross-section of the tapered guide surface is gradually inclined towards the connector from bottom to top. This allows the second connector portion 211 to move along the tapered guide surface from bottom to top and towards the connector even if the first connector portion 11 and the second connector portion 211 are not aligned in any circumferential direction, so that the second connector portion 211 can be connected to the first connector portion 11 by inserting it into the connector.

[0084] Furthermore, the inner diameter of the tapered guide surface gradually decreases towards the first insertion part 11, which allows for a natural and smooth structural transition of the tapered guide surface, facilitating precise guidance of the second insertion part 211 and simplifying and simplifying the manufacturing process. The specific dimensions of the tapered guide surface can be set according to the actual required guiding range to accommodate the insertion needs of the first insertion part 11 and the second insertion part 211 at different skew positions.

[0085] Therefore, the above-mentioned arrangement can improve the guiding range of the tapered guide surface to the second insertion part 211, thereby improving the reliability of the insertion and engagement between the second insertion part 211 and the first insertion part 11, and also improving the user experience.

[0086] The connector 21 is also provided with a rolling element 212, which is located at the end of the second plug portion 211 near the first plug portion 11, and the second plug portion 211 is adapted to roll against the tapered guide surface by the rolling element 212.

[0087] In this way, the rolling element 212 allows the second insertion portion 211 to make rolling contact with the tapered guide surface, which improves the guiding efficiency of the tapered guide surface on the second insertion portion 211, thereby improving the insertion and engagement efficiency between the second insertion portion 211 and the first insertion portion 11. Furthermore, the rolling contact area is small, the pressure per unit area is low, and the wear rate is slow. Compared to sliding fits, rolling fits exhibit more uniform wear, longer service life, and lower maintenance costs.

[0088] Specifically, the rolling element 212 can be disposed at the end of the second insertion portion 211 near the first insertion portion 11, and the rolling element 212 can freely rotate. For example, at least a portion of the rolling element 212 may be embedded in the end of the second insertion portion 211, while another portion may be exposed outside the second insertion portion 211. This allows the rolling element 212 to roll and press against the conical guide surface when the second insertion portion 211 moves along the conical guide surface, thereby achieving a rolling fit between the second insertion portion 211 and the conical guide surface. This design is simple in structure and easy to implement. The rolling element 212 can be constructed as a sliding steel ball, etc.

[0089] There are multiple rolling elements 212, and the multiple rolling elements 212 are distributed circumferentially along the second insertion part 211, and each rolls against the conical guide surface.

[0090] In this way, when the second insertion part 211 moves along the conical guide surface, multiple rolling elements 212 roll and press against the conical guide surface respectively, so that multiple positions of the second insertion part 211 can roll and cooperate with the conical guide surface, which improves the guiding efficiency of the conical guide surface on the second insertion part 211, and the multiple rolling elements 212 can improve the stability and reliability of the movement between the second insertion part 211 and the conical guide surface.

[0091] Specifically, multiple rolling elements 212 are spaced apart along the circumference of the second plug portion 211, allowing the second plug portion 211 to roll into contact with the conical guide surface at multiple circumferential positions via the multiple rolling elements 212. Thus, when the first plug portion 11 and the second plug portion 211 are not aligned after the vehicle is parked in the charging position, at least one of the multiple rolling elements 212 can roll against the conical guide surface, enabling the second plug portion 211 to roll into contact with the conical guide surface at any circumferential position, thereby improving the guiding reliability of the conical guide surface on the second plug portion 211.

[0092] The multiple rolling elements 212 can be evenly spaced apart along the circumference of the second insertion portion 211, or they can be non-uniformly spaced apart along the circumference of the second insertion portion 211. Furthermore, there can be four, five, six, seven, eight, nine, ten, etc., and the number of rolling elements 212 is related to the size of the second insertion portion 211 and can be set according to actual conditions.

[0093] In actual operation, when the lifting cylinder drives the moving structure 23 to rise, the moving structure 23 can drive the connecting plug 21 to rise, so as to drive the connecting plug 21 closer to the connecting socket 1. When the rolling body 212 contacts the conical guide surface, the upward component force will cause the moving part 213 to move freely horizontally in the moving port 231. The second moving body 215 rolls on the upper surface of the moving structure 23 and slides with the moving structure 23 via the second sliding steel ball 26. The first moving body 214 rolls on the upper and lower side walls of the moving cavity 232 via the first sliding steel balls 25 on the upper and lower sides, respectively, to slide in the moving cavity 232. The entire rolling process will automatically calibrate the center position of the connecting plug 21 and the connecting socket 1. When the cylinder rod 2221 of the lifting cylinder reaches the top of the lifting cylinder, the connection between the connecting plug 21 and the connecting socket 1 will be completed. Figure 5 As shown in the diagram, at this time, the guide ring 24 will also change from a compressed state to an extended state, wherein, Figure 4 The guide ring 24 is in a compressed state. Figure 5 The guide ring 24 is in an extended state. The entire drive structure is simple, low in cost, and has a good automatic alignment effect.

[0094] It should be noted that the movement between the moving structure 23 and the connecting plug 21 does not require an additional control structure. During the upward movement of the moving structure 23 and the connecting plug 21 driven by the lifting drive body 222, the component force generated by the rolling body 212 contacting the tapered guide surface is automatically adjusted. Furthermore, during the downward movement of the connecting plug 21 driven by the lifting drive body 222, the connecting plug 21 does not need to automatically return to its original position. Instead, it automatically adjusts to a new position each time it rises. The entire structure is simpler, the motion control is simpler, and the cost is lower.

[0095] This utility model also proposes a vehicle.

[0096] The vehicle according to the present invention includes the undercarriage charging device 100 of any of the above embodiments. The connection socket 1 of the undercarriage charging device 100 can be disposed at the bottom of the vehicle. The connection socket 1 is plugged into the connection plug 21 of the charging device to charge the battery. The connection plug 21 is slidably connected to the moving structure 23. The lifting structure 22 is connected to the moving structure 23, and the lifting structure 22 can drive the moving structure 23 and the connection plug 21 connected thereto to rise and fall, so that the connection plug 21 and the connection socket 1 are automatically plugged in and engaged. The whole process is highly automated, which reduces the risk of electric shock, improves the safety of vehicle use, and improves the efficiency of plugging in and engaging. It also reduces manual operation and has a higher charging efficiency than wireless charging. It can reduce heat dissipation, improve the accuracy and efficiency of charging operation, and the overall structure is simple, the cost is lower, and the practicality is stronger.

[0097] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0098] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A vehicle undercarriage charging device, characterized in that, include: A connection socket, the connection socket being adapted to be fixed relative to the vehicle body; A charging assembly includes a connector plug, a movable structure, and a lifting structure. The connector plug is slidably mounted on the movable structure, and the movable structure is liftably mounted on the lifting structure. The connector plug is used to plug into the connector socket.

2. The under-vehicle charging device according to claim 1, characterized in that, The movable structure has a movable opening, and the connector has a movable part that passes through the movable opening and is adapted to slide in at least two directions within the movable opening.

3. The under-vehicle charging device according to claim 2, characterized in that, The movable structure has a movable cavity, and the movable port communicates with the movable cavity; The connector includes a first movable body, which is connected to the movable part and is movably installed in the movable cavity.

4. The under-vehicle charging device according to claim 3, characterized in that, The connector also includes a second movable body, which is connected to the first movable body via the movable part, and the second movable body is movably supported on the outer surface of the movable structure.

5. The under-vehicle charging device according to claim 2, characterized in that, The movable opening is circular, and the movable part is a movable cylinder. The outer diameter of the movable cylinder is smaller than the inner diameter of the circular opening, and a movable gap is formed between the outer peripheral wall of the movable cylinder and the inner peripheral wall of the circular opening.

6. The under-vehicle charging device according to claim 1, characterized in that, The lifting structure includes a lifting base and a lifting drive body. The movable structure is installed above the lifting base, and the lifting drive body is used to drive the movable structure to lift.

7. The under-vehicle charging device according to claim 6, characterized in that, The lifting drive unit is constructed as a lifting cylinder installed on the lifting base, and the output end of the lifting cylinder is connected to the moving structure.

8. The under-vehicle charging device according to any one of claims 1-7, characterized in that, The connector has a first plug portion and a guide portion arranged around the first plug portion. The connector plug has a second plug portion, which is adapted to be guided along the guide portion to be plugged into and connected with the first plug portion.

9. The under-vehicle charging device according to claim 8, characterized in that, The first plug-in portion is configured as a plug-in interface, and the guide portion is configured as a tapered guide surface, wherein the inner diameter of the tapered guide surface is configured to gradually decrease along the direction close to the first plug-in portion; The connector also includes a rolling element located at the end of the second plug portion near the first plug portion, and the second plug portion is adapted to roll against the tapered guide surface by the rolling element.

10. A vehicle, characterized in that, The vehicle undercarriage charging device includes any one of claims 1-9.

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