Docking module, ground end charging device, charging pile system and charging system

Abstract

The application relates to the technical field of vehicle charging, in particular to a docking module, a ground end charging device, a charging pile system and a charging system. The application provides a docking module which comprises a fixing seat, a ground end connector and at least three photoelectric receivers, the ground end connector is installed on the fixing seat, the at least three photoelectric receivers are installed on the fixing seat at intervals, and the at least three photoelectric receivers are arranged in a non-collinear mode; wherein the photoelectric receivers can receive light emitted by a light source on a vehicle end charging device, and output electric signals with different intensities according to the distance difference between the light source and each photoelectric receiver. The docking module further comprises an elastic member, and the ground end connector is movably connected with the fixing seat through the elastic member. A charging pile system comprises a pile body, a charging gun and a ground end charging device. A charging system comprises a vehicle end charging device and a ground end charging device. The application realizes automatic alignment of the ground end charging device, and is favorable for reducing the matching difficulty of the ground end charging device and the vehicle.

Description

Technical Field

[0001] This application relates to the field of vehicle charging technology, and in particular to a docking module, a ground-end charging device, a charging pile system, and a charging system. Background Technology

[0002] In recent years, automatic charging technology has been continuously developing, and the automotive industry has been constantly exploring various automatic charging solutions for different methods and applications. Currently, conductive contact charging is gradually becoming the preferred charging solution for electric vehicles due to its lack of special requirements on the vehicle chassis and its small space requirements.

[0003] However, in actual operation, due to the non-fixed parking locations of vehicles, the coordinates of the vehicle charging ports vary, which makes it impossible for the ground charging device to achieve automatic contact conduction charging. Manual assistance is usually required to overcome the randomness of vehicle parking, thereby reducing the degree of automation of car charging. Utility Model Content

[0004] Therefore, it is necessary to provide a docking module, a ground-side charging device, a charging pile system, and a charging system to solve the problem that the charging device requires manual assistance to dock the vehicle charging port.

[0005] The first aspect of this application provides the following technical solution:

[0006] A docking module is applied to a ground-side charging device. The docking module includes a mounting base, a ground connector, and at least three photoelectric receivers. The ground connector is mounted on the mounting base and is used to engage with a vehicle-side connector for charging. The at least three photoelectric receivers are spaced apart on the mounting base and are not collinear. Each photoelectric receiver can receive light emitted from a light source on the vehicle-side charging device and outputs electrical signals of different intensities based on the distance difference between the light source and each photoelectric receiver. The docking module also includes an elastic element disposed between the ground connector and the mounting base, and connected to both the ground connector and the mounting base to allow the ground connector to be movably connected to the mounting base.

[0007] In one embodiment, the number of photodetectors is four, with two photodetectors arranged along a first direction and the other two photodetectors arranged along a second direction, the first direction and the second direction being set at an angle.

[0008] In one embodiment, the perpendicular bisector of the line connecting the two photodetectors arranged along the first direction passes through the center of the ground connector, and the perpendicular bisector of the line connecting the two photodetectors arranged along the second direction passes through the center of the ground connector.

[0009] In one embodiment, one of the two photodetectors arranged along the first direction is located on the line connecting the two photodetectors arranged along the second direction.

[0010] In one embodiment, the docking module further includes an image acquisition module, which is spaced apart from the ground connector and connected to the mounting base. The image acquisition module is used to acquire light emitted by the light source on the vehicle-side charging device.

[0011] In one embodiment, the image acquisition module and the ground connector are spaced apart along a first direction, and the imaging center of the image acquisition module and the center of the ground connector are aligned along the first direction.

[0012] In one embodiment, the ground connector includes a motherboard and a ground charging interface. Along a third direction, the ground charging interface protrudes and is connected to one side surface of the motherboard. The docking module further includes a support block connected to the mounting base, and at least a portion of the support block is located above the motherboard in the third direction. The third direction is parallel to the extending direction of the ground charging interface.

[0013] The second aspect of this application provides the following technical solution:

[0014] A ground-end charging device includes the docking module described in any of the above embodiments.

[0015] The third aspect of this application provides the following technical solution:

[0016] A charging pile system includes a pile body, a charging gun, and the aforementioned ground-end charging device, wherein both the charging gun and the ground-end charging device are electrically connected to the pile body.

[0017] The fourth aspect of this application provides the following technical solution:

[0018] A charging system includes a vehicle-side charging device and a ground-side charging device, wherein the vehicle-side charging device includes a light source for emitting light to the photodetector, and the vehicle-side charging device and the ground-side charging device are capable of docking for charging.

[0019] Compared to existing technologies, the docking module, ground charging device, charging pile system, and charging system provided in this application utilize at least three photoelectric receivers, ensuring that these receivers are not collinear. This arrangement places the photoelectric receivers on at least three non-parallel straight lines, with at least two receivers on any one straight line. When two receivers on the same straight line receive light from the same light source on the vehicle-side charging device, their distances from the light source differ, resulting in different electrical signal intensities. The ground charging device moves according to these signal differences until the signal intensities of the two receivers are equal. At this point, the ground connector aligns with the vehicle connector along the straight line. Subsequently, the ground charging device moves perpendicular to the straight line, ensuring that the electrical signal intensities of the two receivers on another straight line are equal after receiving light from the vehicle-side light source, thus achieving complete alignment between the ground connector and the vehicle connector. This differential detection by at least three photoelectric receivers enables automatic alignment of the ground charging device, significantly reducing the difficulty of coordinating the ground charging device with the vehicle for charging. Meanwhile, the ground connector can achieve a certain floating effect through elastic elements, which can better cooperate with the vehicle connector and achieve docking even if the structure is tilted. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this application or the conventional technology, the drawings used in the description of the embodiments or the conventional technology will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 A schematic diagram of the ground-end charging device provided in this application;

[0022] Figure 2 A three-dimensional structural diagram of the docking module provided in this application;

[0023] Figure 3 Top view of the docking module provided in this application;

[0024] Figure 4 Provided for this application Figure 2 Enlarged view of a section at point G in the middle;

[0025] Figure 5 A structural schematic diagram of the lifting linkage provided in this application;

[0026] Figure 6 A partial structural schematic diagram of the ground-end charging device provided in this application;

[0027] Figure 7 This is a structural schematic diagram of the walking module provided in this application;

[0028] Figure 8 This is a structural schematic diagram of the charging pile system provided in this application;

[0029] Figure 9 This is a schematic diagram of the charging system provided in this application;

[0030] Figure 10 This is a schematic diagram of the vehicle-side charging device provided in this application.

[0031] The symbols in the diagram represent the following meanings:

[0032] 10. Ground charging device; 11. Housing; 20. Docking module; 201. First center line; 202. Second center line; 21. Ground connector; 211. Main board; 212. Ground charging interface; 22. Mounting base; 23. Photoelectric receiver; 24. Image acquisition module; 241. Camera; 242. Outer cover; 2421. Light transmission groove; 25. Elastic element; 26. Support block; 40. Lifting module; 41. Protective cover; 42. Lifting linkage; 60. Walking module; 61. Drive wheel assembly; 611. Drive wheel; 612. Rotary drive component; 62. Universal wheel;

[0033] 200, Charging pile system; 210, Pile body; 220, Charging gun; 300, Charging system; 310, Vehicle-side charging device; 320, Vehicle-side connector; 330, First light source; 340, Second light source; M, Target surface. Detailed Implementation

[0034] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0035] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on the other component or there may be an intermediate component. When a component is considered to be "connected to" another component, it can be directly connected to the other component or there may be an intermediate component present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application's specification are for illustrative purposes only and do not represent the only possible implementation.

[0036] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0037] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature and the second feature are in indirect contact through an intermediate medium. Furthermore, "above," "over," and "on top" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0038] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in this application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "and / or" as used in this application includes any and all combinations of one or more of the associated listed items.

[0039] In recent years, automatic charging technology has been continuously developing, and the automotive industry has been constantly exploring various automatic charging solutions for different methods and applications. Currently, conductive contact charging is gradually becoming the preferred charging solution for electric vehicles due to its lack of special requirements on the vehicle chassis and its small space requirements.

[0040] However, in actual operation, due to the non-fixed parking locations of vehicles, the coordinates of the vehicle charging ports vary, which prevents the charging device from achieving automatic contact conduction charging. Manual assistance is usually required to overcome the randomness of vehicle parking, thus reducing the automation level of car charging.

[0041] Please see Figures 1 to 10 This application provides a docking module 20, which is applied to a ground-side charging device 10 that can move on a target surface M. It should be explained that the ground-side charging device 10 moves on the target surface M to the bottom of the vehicle, thereby docking with the vehicle-side charging device 310 for charging, thus achieving vehicle charging. Here, the target surface M can be a surface at the parking space or the surface of the area where the ground-side charging device 10 moves.

[0042] Specifically, such as Figure 2 and Figure 3 As shown, the docking module 20 includes a mounting base 22, a ground connector 21, and at least three photoelectric receivers 23. The ground connector 21 is mounted on the mounting base 22. Correspondingly, the vehicle-side charging device 310 includes a vehicle-side connector 320, and the ground connector 21 is used to cooperate with the vehicle-side connector 320 on the vehicle for charging. The at least three photoelectric receivers 23 are spaced apart on the mounting base 22 and are not collinear. The photoelectric receivers 23 can receive light emitted by the light source on the vehicle-side charging device 310 and output electrical signals of different intensities according to the distance difference between the light source and each photoelectric receiver 23.

[0043] It is understood that this application employs at least three photodetectors 23, and these at least three photodetectors 23 are not collinear. Thus, each photodetector 23 is arranged on at least three non-parallel straight lines, and at least two photodetectors 23 exist on any one straight line. When two photodetectors 23 on the same straight line receive light emitted from the same light source on the vehicle-side charging device 310, if their distances from the light source are different, they will output electrical signals of different intensities. The ground-side charging device 10 moves according to the difference in electrical signals until the electrical signal intensities output by the two photodetectors 23 are equal. At this point, the ground-side connector 21 is aligned with the vehicle-side connector 320 along the direction of this straight line. Afterward, the ground-side charging device 10 moves in a direction perpendicular to this straight line, so that the electrical signal intensities output by two photodetectors 23 on another straight line after receiving light from the vehicle-side light source are equal, thereby achieving complete alignment between the ground-side connector 21 and the vehicle-side connector 320. Thus, by using differential detection from at least three photoelectric receivers 23, the ground charging device 10 can be automatically aligned, which helps to reduce the difficulty of the ground charging device 10 cooperating with the vehicle for charging.

[0044] It should be noted that the movement of the ground charging device 10 is controlled by a controller (not shown in the figure). The photoelectric receiver 23 is communicatively connected to the controller. The light signal generated by the photoelectric receiver 23 can be converted into an electrical signal. The controller determines whether there is a difference in the relative position between the ground connector 21 and the vehicle connector 320 based on the voltage difference formed by the electrical signal. Here, the vehicle light source received by the photoelectric receiver 23 located on two different straight lines can be the same or different, and can be reasonably set according to the needs.

[0045] In this embodiment, please continue to refer to Figure 2 and Figure 3The number of photoelectric receivers 23 is four, with two photoelectric receivers 23 arranged along the first direction x and the other two arranged along the second direction y, forming an angle between the first direction x and the second direction y. Thus, by setting four photoelectric receivers 23, not only is the judgment of the control logic simpler, but a redundant design can also be formed. Even if one photoelectric receiver 23 fails, the reliable docking of the ground charging device 10 can be ensured by changing the judgment logic.

[0046] The angle between the first direction x and the second direction y can be set to 80°, 85°, 90°, or 95°, etc. Preferably, the first direction x is parallel to the length direction of the fixing base 22, and the second direction y is parallel to the width direction of the fixing base 22. That is, the first direction x is perpendicular to the second direction y. In this way, the arrangement of the photoelectric receiver 23 is simple, and the corresponding position determination logic is also simpler.

[0047] Furthermore, the perpendicular bisector of the line connecting the two photodetectors 23 arranged along the first direction x passes through the center of the ground connector 21, and the perpendicular bisector of the line connecting the two photodetectors 23 arranged along the second direction y passes through the center of the ground connector 21. This simplifies the position determination logic of the ground charging device 10.

[0048] Furthermore, in one embodiment, such as Figure 2 As shown, one of the two photoelectric receivers 23 arranged along the first direction x is located on the line connecting the two photoelectric receivers 23 arranged along the second direction y, so as to further reduce the difficulty of the arrangement design of the photoelectric receivers 23.

[0049] In other embodiments, the number of photodetectors 23 may also be three, arranged in an equilateral triangle. This simplifies the assembly of the ground connector 21. Of course, the number of photodetectors 23 may also be five, six, or other numbers, depending on actual needs.

[0050] It is understandable that when determining the position through the photoelectric receiver 23, the position needs to be determined multiple times through the voltage difference. If the ground charging device 10 is initially far from the vehicle connector 320, its adjustment efficiency is low.

[0051] Therefore, to improve positioning efficiency, in one embodiment, please refer to... Figure 2 and Figure 3The docking module 20 also includes an image acquisition module 24, which is spaced apart from the ground connector 21 and connected to the mounting base 22. The image acquisition module 24 is used to acquire the light emitted by the light source on the vehicle-side charging device 310. It is understood that, on the one hand, both the image acquisition module 24 and the ground connector 21 are mounted on the mounting base 22, thus achieving integrated design and contributing to a compact structure. On the other hand, the image acquisition module 24, in conjunction with the light source, can determine the relative position based on the position of the light source acquired by the image acquisition module 24, enabling preliminary position determination between the ground-side charging device 10 and the vehicle-side charging device 310. This allows the ground-side charging device 10 to quickly move to the approximate position where the ground connector 21 and the vehicle-side connector 320 mate. Then, precise position adjustment is performed via the photoelectric receiver 23, achieving accurate docking of the ground connector 21 and effectively improving the efficiency of docking and charging.

[0052] Further, please refer to Figure 3 The image acquisition module 24 and the ground connector 21 are spaced apart along the first direction x, and the imaging center of the image acquisition module 24 is aligned with the center of the ground connector 21 along the first direction x. In this way, during the initial movement process determined by the position of the image acquisition module 24, the ground charging device 10 can initially achieve positioning along the first direction x, thereby greatly improving the efficiency of subsequent judgments.

[0053] Specifically, the image acquisition module 24 includes a camera 241 and an outer cover 242. The outer cover 242 is connected to the mounting base 22, and the outer cover 242 has a light-transmitting groove 2421. The camera 241 is installed inside the outer cover 242 and is correspondingly positioned to correspond with the light-transmitting groove 2421. That is, the camera 241 can acquire the position of the vehicle-end light source through the light-transmitting groove 2421 on the outer cover 242, and at the same time, the outer cover 242 can also protect the camera 241, reducing the probability of damage from contact with external components and improving the reliability of the structure.

[0054] To more clearly illustrate the scheme of this application, this application defines as follows: Figure 1 The first direction x, the second direction y, and the third direction z are shown, and at the same time, the following are defined: Figure 3 The first center line 201 and the second center line 202 shown are as follows: the first center line 201 passes through the imaging center of the image acquisition module 24, the center point of the ground connector 21 and the center point of the two photoelectric receivers 23 along the first direction x; the second center line 202 passes through the center points of the three photoelectric receivers 23 along the second direction y.

[0055] In one embodiment, see Figure 2 and Figure 4The docking module 20 also includes an elastic element 25, which is located between the ground connector 21 and the fixed base 22 and connected to both, allowing the ground connector 21 to be movably connected to the fixed base 22. That is, the ground connector 21 can achieve a certain floating effect through the elastic element 25, enabling better cooperation with the vehicle connector 320, and docking can still be achieved even if the structure is tilted. For example, after setting the elastic element 25, the ground connector 21 can move horizontally relative to the fixed base 22 along the first direction x, the second direction y, and the third direction z, and can also swing at any angle relative to the third direction z. Based on this, when the ground connector 21 docks with the vehicle connector 320, even if they are not initially in a parallel docking state, after contact and force, the force exerted by the vehicle end on the ground connector 21 can force the elastic element 25 to deform, thereby gradually bringing the ground connector 21 closer to parallel with the vehicle connector 320. This design effectively ensures the reliability of the docking and significantly reduces the risk of damage to components during hard insertion. Specifically, the ground connector 21 includes a main board 211 and a ground charging interface 212, with the ground charging interface 212 protruding and connected to one side surface of the main board 211. The elastic element 25 can be configured as a spring sheet, and the mounting base 22 has a slot to accommodate the main board 211. Elastic elements 25 are provided between the main board 211 and the mounting base 22 along its sidewalls in the first direction x and the second direction y, and its bottom wall in the third direction z, so that the ground connector 21 can float in all three directions, further facilitating the mating of the ground connector 21 with the vehicle connector 320. Here, the third direction z is parallel to the extension direction of the ground charging interface 212, that is, the third direction is perpendicular to the plane formed by the first direction x and the second direction y.

[0056] Furthermore, such as Figure 2 As shown, the number of elastic elements 25 is set to multiple, and the multiple elastic elements 25 are arranged around the motherboard 211, with the multiple elastic elements 25 spaced apart. In this way, the ground connector 21 can be adjusted in multiple circumferential positions around the motherboard 211, improving the flexibility and accuracy of adjustment.

[0057] Here, the number of elastic elements 25 can be four, five, or so. Of course, it is not limited to this; the number of elastic elements 25 can be set according to actual needs. In other embodiments, the elastic element 25 can also be a spring, and one or more can be provided as needed to meet the docking requirements of the ground connector 21 swinging or moving.

[0058] Please continue reading. Figure 2 and Figure 3The docking module 20 also includes a support block 26, which is connected to the mounting base 22, and at least a portion of the support block 26 is positioned above the motherboard 211 in a third-direction z-direction. Because the ground connector 21 is floating, it cannot provide pressure support when charging with the vehicle connector 320. The support block 26 is provided to provide support and transmit the force to the mounting base 22. This improves the reliability of the ground connector 21 during charging.

[0059] Specifically, there are two support blocks 26, which are arranged on opposite sides of the main board 211 along the second direction y. This makes the support force of the fixing seat 22 more even. Of course, in other embodiments, the number of support blocks 26 can also be set to three, four or six, etc., which can be reasonably set according to actual needs.

[0060] Please see Figure 1 , Figure 5 , Figure 6 and Figure 7 This application also provides a ground charging device 10, which includes a housing 11, a lifting module 40, a walking module 60, and a docking module 20 from any of the above embodiments. The lifting module 40 is mounted on the housing 11 and can move up and down in the height direction of the housing 11, i.e., in the third direction z. The docking module 20 is mounted on the lifting module 40 and can move up and down with the lifting module 40. The walking module 60 is mounted on the housing 11 and is used to drive the housing 11 to move; that is, the movement of the ground charging device 10 on the target surface M is achieved by the walking module 60.

[0061] Specifically, please refer to Figure 1 and Figure 5 The lifting module 40 includes a lifting link 42 and a protective cover 41. The docking module 20 is mounted on the lifting link 42. When the lifting link 42 is retracted or extended, the docking module 20 can move up and down in the height direction of the housing 11. This allows the docking module 20 to be lifted, enabling the ground charging device 10 to adapt to vehicles with different chassis heights and complete docking. The protective cover 41 covers the outer periphery of the lifting link 42 and is connected to both the docking module 20 and the housing 11. It protects the lifting link 42 and can be extended or folded accordingly as the lifting link 42 is raised or lowered.

[0062] Here, the lifting linkage 42 can be configured as a four-link or five-link structure, and the number of lifting linkages 42 can be set according to actual needs, such as two or three sets. The protective cover 41 can be a bellows cover or a rubber / silicone corrugated tube, etc., which will not be described in detail here.

[0063] Furthermore, such as Figure 6 and Figure 7 As shown, the walking module 60 includes multiple sets of drive wheel sets 61, which are disposed on two opposite sides of the housing 11, and each set of drive wheel sets 61 is independently configured. Each set of drive wheel sets 61 includes a drive wheel 611 and a rotary drive component 612. The rotary drive component 612 is connected to the drive wheel 611 and can control the drive wheel 611 to rotate at different speeds. This allows the walking module 60 to flexibly move the ground-side charging device 10 in any direction on the ground by controlling the differential speed between the drive wheel sets 61. This enables it to precisely adjust its position and move directly below the vehicle-side connector 320, thus meeting the need for automatic docking and charging when the new energy vehicle has a certain parking deviation. It should be noted that the rotary drive component 612 is a rotary motor, and the rotary motor and the drive wheel 611 are integrated into a single unit. Of course, those skilled in the art can also use a rotary cylinder, etc., which will not be elaborated here.

[0064] Here, the number of drive wheel sets 61 is set to two, with the two sets of drive wheel sets 61 located on two opposite sides of the middle of the housing 11. In addition, the walking module 60 also includes multiple omnidirectional wheels 62, which are distributed at various corners of the housing 11, so that the walking module 60 can use the two sets of drive wheel sets 61 and the multiple omnidirectional wheels 62 to jointly support the housing 11, thereby improving the load-bearing stability. Of course, it is not limited to this. For those skilled in the art, the number of drive wheel sets 61 can also be set to three, four, or even more sets, which will not be elaborated here.

[0065] like Figure 8 As shown, this application also provides a charging pile system 200, which includes a pile body 210, a charging gun 220, and a ground-end charging device 10 as described in any of the above embodiments. Both the charging gun 220 and the ground-end charging device 10 are electrically connected to the pile body 210. Here, vehicle-side charging devices 310 are provided on the side and bottom of the vehicle. The charging gun 220 is adapted to the vehicle-side charging device 310 on the side of the vehicle, and the ground-end charging device 10 is adapted to the vehicle-side charging device 310 on the bottom of the vehicle.

[0066] The charging station 210 is typically installed in a fixed location, such as on a wall or the ground. The charging gun 220 is electrically connected to the charging station 210 via a cable, allowing the user to hold it and adapting to the vehicle-side charging device 310 on the side of the vehicle. The ground-side charging device 10 is also electrically connected to the charging station 210 via a cable, and the ground-side charging device 10 can move autonomously to the bottom of the vehicle.

[0067] like Figure 9 and Figure 10As shown, this application also provides a charging system 300, which includes a vehicle-side charging device 310 and a ground-side charging device 10 as described in any of the above embodiments. The vehicle-side charging device 310 is disposed at the bottom of the vehicle, i.e., the chassis of the vehicle, and the ground-side charging device 10 can be moved to the bottom of the vehicle to achieve docking and charging with the vehicle-side charging device 310.

[0068] Furthermore, the vehicle-mounted charging device 310 includes a light source for emitting light to the image acquisition module 24 and the photoelectric receiver 23. This light source can be divided into a first light source 330 and a second light source 340. The first light source 330 works in conjunction with the image acquisition module 24, and the second light source 340 works in conjunction with the photoelectric receiver 23. Since the image acquisition module 24 and the photoelectric receiver 23 perform positioning respectively, the first light source 330 and the second light source 340 can have different light source characteristics, such as different geometric shapes, different light source colors, and different light source flashing frequencies. These can be appropriately set according to the recognition methods of the image acquisition module 24 and the photoelectric receiver 23.

[0069] Among them, such as Figure 10 As shown, the number of first light sources 330 can be set to multiple. Multiple first light sources 330 construct a redundant and complementary optical positioning system, which effectively solves the problems of recognition interruption, positioning failure, and docking failure that easily occur when a single light source is blocked or malfunctions. Furthermore, multiple first light sources 330 can expand the recognition fault tolerance space of optical positioning through staggered layout and differentiated feature settings. They can quickly fill in and take over the positioning and recognition work when the main recognition light source is malfunctioning, avoiding the risk of automatic charging positioning interruption and docking failure caused by partial blockage or light source failure. This significantly improves the continuity, stability, and reliability of the alignment recognition of the ground charging device 10, further optimizes the alignment accuracy of the vehicle connector 320 and the ground connector 21, effectively adapts to complex vehicle installation structures and harsh outdoor operating conditions, and significantly improves the environmental adaptability and working stability of the whole vehicle automatic charging system. The second light source 340 is similar and will not be described in detail here.

[0070] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0071] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the scope of protection of this application. Therefore, the patent protection scope of this application should be determined by the appended claims.

Claims

1. A docking module, applied to a ground-end charging device (10), characterized in that, The docking module (20) includes a mounting base (22), a ground connector (21), and at least three photoelectric receivers (23). The ground connector (21) is mounted on the mounting base (22) and is used to mate with the vehicle connector (320) on the vehicle-side charging device (310). The at least three photoelectric receivers (23) are spaced apart on the mounting base (22) and are not collinear. The photoelectric receiver (23) can receive light emitted from the light source on the vehicle-side charging device (310) and output electrical signals of different intensities according to the difference in distance between the light source and each photoelectric receiver (23). The docking module (20) also includes an elastic element (25), which is disposed between the ground connector (21) and the fixed base (22) and is connected to the ground connector (21) and the fixed base (22) respectively, so that the ground connector (21) and the fixed base (22) are movably connected.

2. The docking module according to claim 1, characterized in that, The number of photoelectric receivers (23) is four, and two of the photoelectric receivers (23) are arranged along a first direction, while the other two photoelectric receivers (23) are arranged along a second direction, with the first direction and the second direction forming an angle.

3. The docking module according to claim 2, characterized in that, The perpendicular bisector of the line connecting the two photodetectors (23) arranged along the first direction passes through the center of the ground connector (21); and the perpendicular bisector of the line connecting the two photodetectors (23) arranged along the second direction passes through the center of the ground connector (21).

4. The docking module according to claim 3, characterized in that, One of the two photodetectors (23) arranged along the first direction is located on the line connecting the two photodetectors (23) arranged along the second direction.

5. The docking module according to claim 1, characterized in that, The docking module (20) also includes an image acquisition module (24), which is spaced apart from the ground connector (21) and connected to the fixing base (22). The image acquisition module (24) is used to acquire the light emitted by the light source on the vehicle-side charging device (310).

6. The docking module according to claim 5, characterized in that, The image acquisition module (24) and the ground connector (21) are spaced apart along a first direction, and along the first direction, the imaging center of the image acquisition module (24) and the center of the ground connector (21) are aligned.

7. The docking module according to claim 1, characterized in that, The ground connector (21) includes a motherboard (211) and a ground charging interface (212). Along a third direction, the ground charging interface (212) protrudes and is connected to one side surface of the motherboard (211). The docking module (20) further includes a support block (26), which is connected to the fixing base (22), and at least a portion of the support block (26) is located above the motherboard (211) in the third direction. The third party extends in a direction parallel to the ground terminal charging interface (212).

8. A ground-end charging device, characterized in that, Includes the docking module (20) as described in any one of claims 1-7.

9. A charging pile system, characterized in that, It includes a pile body (210), a charging gun (220), and a ground-end charging device (10) as described in claim 8, wherein the charging gun (220) and the ground-end charging device (10) are both electrically connected to the pile body (210).

10. A charging system, characterized in that, Includes a vehicle-side charging device (310) and a ground-side charging device (10) as described in claim 8, wherein the vehicle-side charging device (310) includes a light source for emitting light to the photodetector (23), and the vehicle-side charging device (310) and the ground-side charging device (10) are capable of docking for charging.

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