Charging plug, power receiving device and charging system

Abstract

The utility model discloses a charging plug, a power receiving device and a charging system, and relates to the technical field of vehicle charging, the charging plug comprises a shell, a charging pin and a movable protective cover, the shell is provided with a containing cavity, the charging pin is arranged in the containing cavity and is used for being connected with a power receiving electrode, and the movable protective cover is movably installed in the containing cavity. The movable protective cover is constructed to be capable of moving between a first preset position and a second preset position in the containing cavity, the power receiving device comprises a power receiving seat body, a power receiving limiting part is arranged in the power receiving seat body, and the power receiving limiting part is configured to abut against the movable protective cover of the charging plug in the process that the charging plug is inserted into the power receiving seat body. And the movable protective cover is moved from the first preset position to the second preset position. According to the arrangement mode, the technical problems that mutual connection of the charging plug and the power receiving device is affected due to the fact that dust and sundries are prone to being accumulated in the charging plug, and even a vehicle cannot be normally charged or the charging function fails in severe cases are solved.

Description

Technical Field

[0001] The present application relates to the technical field of vehicle charging, and in particular to a charging plug, a power receiving device and a charging system. Background Art

[0002] Currently, when an electric vehicle needs to be charged, the charging plug of the charging pile and the receiving socket of the electric vehicle are connected to each other to achieve vehicle charging. However, in the process of implementing the above charging, the inventors have found that there are at least the following problems:

[0003] Since charging piles are usually installed outdoors, the charging scene of electric vehicles changes with the changes in the external weather environment. If extremely bad weather occurs, the exposed charging plug will suffer certain erosion. For example, when encountering rain, snow or sandstorms, the pin holes of the charging plug are prone to accumulation of dust and debris, and are difficult to clean. This will cause faults such as connection failure and poor contact, affecting the charging effect. In severe cases, it may even cause the vehicle to fail to charge normally or the charging function to fail. Utility Model Content

[0004] The purpose of this application is to provide a charging plug, a power receiving device and a charging system, which solves the problem that the vehicle cannot be charged normally or the charging function fails due to the accumulation of dust and debris inside the charging plug.

[0005] To achieve the above-mentioned objectives, the present application provides a charging plug for connecting to a power receiving device to charge a vehicle battery. The charging plug includes a shell, a charging pin and a movable protective cover. The shell has a accommodating cavity. The charging pin is arranged in the accommodating cavity. The charging pin is used to connect to the power receiving electrode of the power receiving device. The movable protective cover is movably installed in the accommodating cavity. The movable protective cover is constructed to be movable between a first preset position and a second preset position in the accommodating cavity. When the movable protective cover is in the first preset position, the opening of the accommodating cavity is closed to cover the charging pin. When the movable protective cover is in the second preset position, the opening of the accommodating cavity is opened to expose the charging pin.

[0006] In some embodiments, a slope is provided on the top of the movable protective cover, and the distance between the slope and the bottom surface of the movable protective cover gradually decreases from the center toward the outside.

[0007] In some embodiments, the shell is provided with a guide groove, an avoidance groove and a connecting groove, the movable protective cover is provided with a guide protrusion, the guide groove extends in a direction parallel to the axis of the charging pin, the avoidance groove and the guide groove are staggered, and the connecting groove connects the avoidance groove and the guide groove, so that the guide protrusion transitions from the avoidance groove via the connecting groove to the guide groove and moves relative to the shell along the extension direction of the guide groove.

[0008] In some embodiments, the charging pin includes a charging power pin and a charging signal pin, and the movable protective cover is provided with a first pin hole and a second pin hole. When the movable protective cover is located at the second preset position, the charging power pin is plugged into the first pin hole, and the charging signal pin is plugged into the second pin hole.

[0009] In some embodiments, an inner core is provided in the accommodating cavity, and the inner core includes a mounting body and an isolation body provided on the mounting body. The charging pin is installed on the mounting body. The isolation body is used to separate the charging power pins, as well as the charging power pins and the charging signal pins. The movable protective cover is also provided with an avoidance hole, which is used to avoid the isolation body.

[0010] In some embodiments, a protective ring is provided on the inner wall of the avoidance hole, and the protective ring is used to contact the isolation body when the movable protective cover moves relative to the isolation body to fill the gap between the movable protective cover and the isolation body.

[0011] In some embodiments, the isolation body includes a central portion, two first isolation portions extending along one side of the central portion to form a first isolation cavity for accommodating one of the charging power pins, and two second isolation portions extending along the other side of the central portion to form a second isolation cavity for accommodating another charging power pin, and both the first isolation portion and the second isolation portion close to the side with a larger number of charging signal pins are provided with a guide convex surface, which is used to contact the power signal pin of the power receiving device when the charging plug is plugged into the power receiving device.

[0012] In some embodiments, the height of the top surface of the mounting body gradually decreases from the center toward the outside, and the outer side wall of the mounting body is provided with a plurality of first drainage holes;

[0013] A second drain hole is provided at the bottom of the shell.

[0014] The present application provides a power receiving device for connecting to any of the above-mentioned charging plugs to charge a vehicle battery. The power receiving device includes a power receiving socket body, and a power receiving limit portion is provided in the power receiving socket body. The power receiving limit portion is configured to abut against a movable protective cover of the charging plug during the process of inserting the charging plug into the power receiving socket body, and to move the movable protective cover from a first preset position to a second preset position.

[0015] The present application provides a charging system, comprising a charging plug as described above and a power receiving device as described above, wherein the charging plug is connected to the power receiving device to charge a vehicle battery.

[0016] The present application provides a charging plug, which is connected to a power receiving device to charge a vehicle battery. The charging plug includes a shell, a charging pin and a movable protective cover. The shell has a accommodating cavity, and the charging pin is arranged in the accommodating cavity. The charging pin is used to connect to the power receiving electrode of the power receiving device. The movable protective cover is movably installed in the accommodating cavity. The movable protective cover is constructed to be movable between a first preset position and a second preset position in the accommodating cavity.

[0017] In this way, the movable protective cover covers the charging pins in the direction of movement and remains plugged into the charging pins when in either the first or second preset positions. When in the first preset position, the movable protective cover closes the opening of the accommodating cavity to shield the charging pins. When in the second preset position, the movable protective cover opens the opening of the accommodating cavity to expose the charging pins, thereby facilitating charging. Furthermore, both the first and second preset positions are located within the accommodating cavity, rather than outside it, which facilitates protection of the electrical components within the housing.

[0018] At the same time, the present application also provides a power receiving device for connecting to the above-mentioned charging plug to charge the vehicle battery. The power receiving device includes a power receiving socket body, and a power receiving limit part is provided in the power receiving socket body. The power receiving limit part is configured to abut against the movable protective cover of the charging plug during the process of inserting the charging plug into the power receiving socket body, and move the movable protective cover from a first preset position to a second preset position.

[0019] This arrangement provides the following beneficial effects: During charging, the charging plug is docked with the power receiving device. During docking, the power receiving limiter of the power receiving device contacts and abuts against the movable protective cover, causing the movable protective cover to move from a first preset position to a second preset position within the accommodating cavity. During this movement, the charging pin is exposed and inserted into the power receiving electrode of the power receiving device. As can be seen, during the charging plug insertion process, the movable protective cover prevents debris from entering the plug and interfering with the charging process. After the charging plug and the power receiving device are properly plugged in, charging is initiated. After charging is complete, the charging plug is unplugged. During the unplugging process, as the charging plug is disconnected from the power receiving device, the movable protective cover moves from the second preset position to the first preset position. During this movement, foreign matter that falls onto the surface of the movable protective cover is removed from the charging plug, effectively cleaning the interior of the charging plug. This solves the technical problem of dust and debris easily accumulating inside the charging plug, which can affect the connection between the charging plug and the power receiving device, and in severe cases, even prevent the vehicle from charging properly or cause the charging function to fail. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present application or related technologies, the following briefly introduces the drawings required for use in the embodiments or related technical descriptions. Obviously, the drawings described below are merely embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without any creative work.

[0021] Figure 1 This is a schematic diagram of the initial state of the charging plug in an embodiment of the present application;

[0022] Figure 2 This is a schematic diagram of the charging state of the charging plug in an embodiment of the present application;

[0023] Figure 3 This is a schematic diagram of the overall structure of the charging plug in the embodiment of the present application;

[0024] Figure 4 for Figure 3 An exploded schematic diagram of the charging plug shown;

[0025] Figure 5 for Figure 3 A schematic diagram of the structure of the movable protective cover in the charging plug shown;

[0026] Figure 6 for Figure 3 A schematic diagram of the bottom structure of the housing in the charging plug shown;

[0027] Figure 7 for Figure 3 The internal structure diagram of the charging plug is shown;

[0028] Figure 8 Schematic diagram of the overall structure of the power receiving device in the embodiment of the present application.

[0029] in:

[0030] 10-power receiving device, 11-power receiving seat body, 15-power receiving electrode, 151-power receiving power pin, 152-power receiving signal pin;

[0031] 20-charging plug, 21-shell, 211-guide groove, 2111-avoidance groove, 2112-connecting groove, 212-accommodating chamber, 213-second drainage hole, 22-movable protective cover, 221-guide protrusion, 222-first pin hole, 223-second pin hole, 224-slope, 225-avoidance hole, 23-charging pin, 231-charging power pin, 232-charging signal pin, 24-fourth elastic member, 25-inner core, 251-mounting body, 2511-boss, 2512-first drainage hole, 252-isolating body, 2521-center part, 2522-first isolation part, 2523-second isolation part, 2524-guide convex surface. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0033] In order to enable those skilled in the art to better understand the present application, the present application is further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0034] The present application also provides a charging plug 20, such as Figures 1 to 7 shown.

[0035] The charging plug 20 is connected to the power receiving device 10 to charge the vehicle battery.

[0036] Specifically, the charging plug 20 includes a shell 21, a charging pin 23 and a movable protective cover 22. The shell 21 has a accommodating cavity 212. The charging pin 23 is arranged in the accommodating cavity 212. The charging pin 23 is used to connect to the power receiving electrode 15 of the power receiving device 10. The movable protective cover 22 is movably installed in the accommodating cavity 212. The movable protective cover 22 is constructed to be movable between a first preset position and a second preset position in the accommodating cavity 212.

[0037] In this way, the movable protective cover 22 covers the charging pins 23 in the direction of movement, and maintains a plug-in relationship with the charging pins 23 when the movable protective cover 22 is in the first preset position or the second preset position. When the movable protective cover 22 is in the first preset position, the movable protective cover 22 can close the opening of the accommodating cavity 212 to block the charging pins 23. When the movable protective cover 22 is in the second preset position, the opening of the accommodating cavity 212 is opened to expose the charging pins 23, thereby facilitating charging.

[0038] In addition, the first preset position and the second preset position are both arranged inside the accommodating cavity 212 rather than outside the accommodating cavity 212 , which is beneficial for protecting the electrical components inside the housing 21 .

[0039] It should be noted that the first preset position may be the initial position of the movable protective cover 22. The movable protective cover 22 in the initial position can close the opening of the accommodating cavity 212 to cover the charging pin 23, so as to prevent external debris from entering the interior of the shell 21, thereby providing a certain degree of protection for the charging pin 23 in the shell 21. The second preset position may be the final position of the movable protective cover 22. In the process of the movable protective cover 22 moving from the initial position to the final position, the charging pin 23 can be exposed, thereby facilitating charging. When the movable protective cover 22 is in the final position, the charging plug 20 and the power receiving device 10 are plugged in place.

[0040] In this way, when the movable protective cover 22 moves from the first preset position to the second preset position, the charging pin 23 can be exposed, thereby facilitating charging. Preferably, the shell 21 is provided with a circular inner hole, and the outer contour of the movable protective cover 22 is cylindrical. The movable protective cover 22 and the inner hole of the shell 21 can be slidably plugged into each other. When the movable protective cover 22 moves from the second preset position to the first preset position, foreign objects that fall onto the surface of the movable protective cover 22 can be brought to the outside of the charging plug 20, thereby achieving a cleaning effect on the inside of the charging plug 20.

[0041] By adopting the charging plug 20 configured in this way, in the charging state, the charging plug 20 is docked with the power receiving device 10. During the docking process, the movable protective cover 22 contacts the power receiving socket body 11 and moves from the first preset position to the second preset position. During the movement, the charging pin 23 is exposed and inserted into the inside of the power receiving electrode 15. It can be seen that during the insertion of the charging plug 20, the movable protective cover 22 can prevent debris from entering the inside of the plug and interfering with the charging process. After the charging plug 20 and the power receiving device 10 are properly plugged in, charging is started. After charging is completed, the charging plug 20 is unplugged. During the unplugging process of the charging plug 20, as the power receiving device 10 is detached, the movable protective cover 22 moves from the second preset position to the first preset position. During the movement, foreign matter that falls on the surface of the movable protective cover 22 can be brought to the outside of the charging plug 20, thereby achieving a cleaning effect on the inside of the charging plug 20.

[0042] In this way, the technical problem that dust and debris easily accumulate inside the charging plug 20 and affect the connection between the charging plug 20 and the power receiving device 10, and in serious cases even cause the vehicle to be unable to charge normally or the charging function to fail, is solved.

[0043] In some embodiments, the top of the movable protective cover 22 is provided with a slope 224. For example, the movable protective cover 22 has an arc-shaped top surface, and the distance between the arc-shaped top surface and the bottom surface of the movable protective cover 22 gradually decreases from the center to the outside. In other words, the arc-shaped top surface has a structure with a high center position and a low peripheral area. With this configuration, when the charging plug 20 is unplugged from the power receiving device 10, debris can roll down the slope 224 to the outside of the plug.

[0044] In some embodiments, in order to facilitate the guidance of the movement of the movable protective cover 22, the outer shell 21 is provided with a guide groove 211, which extends along the plugging direction of the charging plug 20 or parallel to the axis of the charging pin 23. Accordingly, the movable protective cover 22 is provided with a guide protrusion 221, which is slidably embedded in the guide groove 211, so that the movable protective cover 22 moves relative to the outer shell 21 along the extension direction of the guide groove 211.

[0045] Furthermore, the housing 21 is further provided with an avoidance groove 2111 and a connecting groove 2112. The avoidance groove 2111 and the guide groove 211 are staggered, and the connecting groove 2112 connects the avoidance groove 2111 and the guide groove 211, so that the guide protrusion 221 transitions from the avoidance groove 2111 to the guide groove 211 via the connecting groove 2112 and moves relative to the housing 21 along the extension direction of the guide groove 211.

[0046] During installation, the movable protective cover 22 is first installed on the outer shell 21. The avoidance groove 2111 is used to avoid the guide protrusion 221 when the movable protective cover 22 is installed on the outer shell 21, so that the guide protrusion 221 extends into the outer shell 21. Then the movable protective cover 22 is rotated a certain angle toward the direction of the guide groove 211, so that the guide protrusion 221 is rotated from the avoidance groove 2111 to the top of the guide groove 211 via the connecting groove 2112. In this way, the movable protective cover 22 can be installed in the outer shell 21.

[0047] It can be understood that by adopting the combined groove structure of the guide groove 211, the avoidance groove 2111 and the connecting groove 2112, on the one hand, the movable protective cover 22 will not easily fall off the shell 21, which can ensure the stability of the movable protective cover 22 and the shell 21 after being connected. On the other hand, the part of the shell 21 located above the connecting groove 2112 can form a shielding structure, which has a certain sealing effect and is used to prevent external dust, rainwater, etc. from entering the guide groove 211. It can not only prevent the smoothness of the sliding fit between the guide protrusion 221 and the guide groove 211 from being affected, but also protect the electrical connectors inside the shell 21.

[0048] Of course, depending on actual needs, the number of guide grooves 211 and guide protrusions 221 can be set to at least two. For example, the two guide grooves 211 are symmetrically arranged about the central axis of the housing 21, and the two guide protrusions 221 are symmetrically arranged about the central axis of the movable protective cover 22. In this way, under the guiding action of the guide grooves 211 and the guide protrusions 221, the movable protective cover 22 can maintain balance during the downward movement, preventing the movable protective cover 22 from shifting and affecting the flexibility and stability of the connection between the charging plug 20 and the power receiving device 10.

[0049] In some embodiments, the charging pin 23 includes a charging power pin 231 and a charging signal pin 232 , which are respectively connected to the power receiving pin 151 and the signal receiving pin 152 of the power receiving electrode 15 .

[0050] To facilitate the connection between the movable protective cover 22 and the charging pin 23, the movable protective cover 22 is provided with a first pin hole 222 and a second pin hole 223. The first pin hole 222 is used to expose the charging power pin 231, and the second pin hole 223 is used to expose the charging signal pin 232. When the movable protective cover 22 is in the first preset position or the second preset position, the charging power pin 231 is connected to the first pin hole 222, and the charging signal pin 232 is connected to the second pin hole 223.

[0051] It is important to emphasize that the movable protective cover 22 covers the charging pins 23 in the direction of movement, and when the movable protective cover 22 is in the first preset position or the second preset position, it remains plugged into the charging pins 23. This arrangement improves the stability of the charging pins 23 during charging while maintaining a compact structure.

[0052] When the charging plug 20 is plugged into the power receiving device 10, the charging power pin 231 and the charging signal pin 232 are exposed from the first pin hole 222 and the second pin hole 223 respectively. The charging power pin 231 and the charging signal pin 232 are respectively inserted into the power receiving pin 151 and the power receiving signal pin 152 of the power receiving device 10, thereby realizing the charging function.

[0053] In some embodiments, an inner core 25 is provided in the accommodating cavity 212, and the inner core 25 includes a mounting body 251 and an isolation body 252. The mounting body 251 is used to install the charging pin 23, and the isolation body 252 is provided on the mounting body 251. The isolation body 252 is used to separate each charging power pin 231, as well as the charging power pin 231 and the charging signal pin 232. The movable protective cover 22 is also provided with an avoidance hole 225, and the avoidance hole 225 is used to avoid the isolation body 252.

[0054] In order to maintain sealing during the movement of the movable protective cover 22, a protective ring is provided on the inner wall of the avoidance hole 252. The protective ring is used to contact the isolation body 252 when the movable protective cover 22 moves relative to the isolation body 252 to fill the gap between the movable protective cover 22 and the isolation body 252.

[0055] That is to say, the above-mentioned protective ring serves as a sealing ring between the movable protective cover 22 and the isolation body 252, and is used to ensure the sealing of the movable protective cover 22 during the movement, thereby preventing external dust, rainwater, etc. from entering the interior of the outer shell 21 through the gap between the movable protective cover 22 and the isolation body 252 during the movement of the movable protective cover 22.

[0056] Specifically, the isolation body 252 can have an I-shaped structure. The isolation body 252 includes a central portion 2521, from which two first isolation portions 2522 extend along one side to form a first isolation cavity for accommodating one charging power pin 231. Two second isolation portions 2523 extend along the other side of the central portion 2521 to form a second isolation cavity for accommodating the other charging power pin 231. Both the first isolation cavity and the second isolation cavity are semicircular.

[0057] like Figure 4 As shown, the first isolation cavity and the second isolation cavity are respectively arranged on the left and right sides of the central portion 2521, and three charging signal pins 232 arranged side by side are provided on the upper side of the central portion 2521, and four charging signal pins 232 are provided on the lower side of the central portion 2521. Three of the four charging signal pins 232 are arranged side by side, and the fourth charging signal pin 232 is arranged on the inner side of the three charging signal pins 232 arranged side by side.

[0058] In this embodiment, both the first isolating portion 2522 and the second isolating portion 2523 on the side closest to the larger number of charging signal pins 232 (four charging signal pins 232) are provided with a guide convex surface 2524. The guide convex surface 2524 is configured to contact the power receiving signal pins 152 of the power receiving device 10 when the charging plug 20 is plugged into the power receiving device 10. This serves as a guide when plugging the charging signal pins 232 into the power receiving signal pins 152 of the power receiving electrode 15, thereby ensuring stable plugging of the charging plug 20 into the power receiving device 10.

[0059] In some embodiments, the charging plug 20 further includes a fourth elastic member 24. The fourth elastic member 24 has two ends abutting the housing 21 and the movable protective cover 22, respectively. The fourth elastic member 24 is configured to provide an elastic force that causes the movable protective cover 22 to move toward the first predetermined position. Alternatively, the fourth elastic member 24 may be a compression spring.

[0060] It can be seen that during the downward movement of the movable protective cover 22, the fourth elastic member 24 is compressed and deformed, so that the movable protective cover 22 is always subjected to the elastic force from the fourth elastic member 24 during the downward movement. During the removal of the charging plug 20, under the elastic force of the fourth elastic member 24, the movable protective cover 22 has a tendency to move upward, thereby facilitating the movable protective cover 22 to quickly reset upward after charging is completed and the charging plug 20 is disconnected from the power receiving device 10.

[0061] In some embodiments, a boss 2511 is provided on the mounting body 251 . The boss 2511 is used to mount the charging pin 23 . A certain height difference is formed between the boss 2511 and the mounting body 251 .

[0062] That is to say, the boss 2511 protrudes from the mounting body 251, so that the height of the top surface of the boss 2511 is greater than the height of the top surface of the mounting body 251. In this way, even if rainwater enters the housing 21, the rainwater is distributed on the top surface of the mounting body 251 and will not pass over the boss 2511, thereby preventing water droplets or water stains from connecting the pins and causing a short circuit.

[0063] To facilitate drainage, the height of the top surface of the mounting body 251 gradually decreases from the center toward the outside. The outer wall of the mounting body 251 is provided with a plurality of first drainage holes 2512 . Meanwhile, the bottom of the housing 21 is provided with second drainage holes 213 .

[0064] It can be seen that after rainwater enters the housing 21, the rainwater is distributed on the top surface of the mounting body 251. Since the height of the top surface of the mounting body 251 gradually decreases from the center to the outside, the rainwater will flow from the center to the outside, which is conducive to the rainwater flowing out of the charging plug 20 through the first drainage hole 2512 and the second drainage hole 213 at the bottom of the housing 21.

[0065] The working process of the charging plug 20 is described in detail below:

[0066] During charging, the charging plug 20 is inserted into the power receiving device 10. During the insertion process of the charging plug 20, the movable protective cover 22 contacts the power receiving device 10 and slides downward along the guide groove 211 in the shell 21. During the downward movement of the movable protective cover 22, the charging pins 23 in the charging plug 20 are exposed and inserted into the power receiving electrodes 15 of the power receiving device 10. At the same time, the movable protective cover 22 compresses the fourth elastic member 24 at the bottom; during the insertion process of the charging plug 20, the movable protective cover 22 can prevent debris from entering the interior of the charging plug 20. At the same time, the curved top surface design of the movable protective cover 22 can cause debris to roll to the outside of the plug; after the charging plug 20 and the power receiving device 10 are properly plugged in, charging is started.

[0067] After charging is complete, the charging plug 20 is unplugged. During the unplugging process, as the charging plug 20 is separated from the power receiving device 10, the movable protective cover 22 is reset under the action of the fourth elastic member 24. At the same time, foreign objects that have fallen onto the surface of the movable protective cover 22 are carried to the outside of the charging plug 20 and rolled down the slope 224 at the top of the movable protective cover 22. After the charging plug 20 is unplugged, charging is completed.

[0068] The power receiving device 10 provided in the embodiment of the present application is as follows: Figure 8 shown.

[0069] The power receiving device 10 is used to be connected to the charging plug 20 described in the above embodiment to charge the vehicle battery. The power receiving device 10 includes a power receiving socket body 11 .

[0070] Furthermore, a power limiting portion is provided in the power receiving socket body 11, which is configured to abut against the movable protective cover 22 of the charging plug 20 during the process of inserting the charging plug 20 into the power receiving socket body 11, and move the movable protective cover 22 from the first preset position to the second preset position.

[0071] In some embodiments, the power receiving limiting portion includes but is not limited to the power receiving electrode 15 or a limiting column provided in the power receiving socket body 11 and capable of abutting against the movable protective cover 22 when the charging plug 20 is inserted into the power receiving socket body 11.

[0072] During charging, the charging plug 20 is inserted into the power receiving device 10. During the insertion process, the power receiving limiter in the power receiving device 10 abuts against the movable protective cover 22 and slides downward along the guide groove 211 in the housing 21. As the movable protective cover 22 moves downward, the charging pins 23 in the charging plug 20 are exposed and inserted into the power receiving electrodes 15 of the power receiving device 10. After the charging plug 20 and the power receiving device 10 are properly inserted, charging is started.

[0073] The present application provides a charging system, which includes the power receiving device 10 and the charging plug 20 described in the above specific embodiment. The charging plug 20 is connected to the power receiving device 10 to charge the vehicle battery.

[0074] It should be noted that, in this specification, relational terms such as first and second are merely used to distinguish one entity from other entities, but do not necessarily require or imply any actual relationship or order between these entities.

[0075] The above describes in detail the charging plug, power receiving device, and charging system provided by this application. This document uses specific examples to illustrate the principles and implementation methods of this application. The description of the above examples is only intended to help understand the solution and core concept of this application. It should be noted that those skilled in the art can make various improvements and modifications to this application without departing from the principles of this application, and such improvements and modifications also fall within the scope of protection of this application.

Claims

1. A charging plug (20), characterized in that: The charging plug (20) is used for connecting with a power receiving device (10) to charge a vehicle battery. The charging plug (20) includes a housing (21), a charging pin (23) and a movable protective cover (22). The housing (21) has a receiving cavity (212). The charging pin (23) is arranged in the receiving cavity (212). The charging pin (23) is used to connect with the power receiving electrode (15) of the power receiving device (10). The movable protective cover (22) is movably installed in the receiving cavity (212). The movable protective cover (22) is configured to be movable between a first preset position and a second preset position in the receiving cavity (212). When the movable protective cover (22) is located at the first preset position, the opening of the receiving cavity (212) is closed to shield the charging pin (23). When the movable protective cover (22) is located at the second preset position, the opening of the receiving cavity (212) is opened to expose the charging pin (23).

2. The charging plug (20) according to claim 1, characterized in that A slope (224) is provided on the top of the movable protective cover (22), and the distance between the slope (224) and the bottom surface of the movable protective cover (22) gradually decreases from the center toward the outside.

3. The charging plug (20) according to claim 1, characterized in that The housing (21) is provided with a guide groove (211), an avoidance groove (2111) and a connecting groove (2112); the movable protective cover (22) is provided with a guide protrusion (221); the guide groove (211) extends in a direction parallel to the axis of the charging pin (23); the avoidance groove (2111) and the guide groove (211) are staggered, and the connecting groove (2112) connects the avoidance groove (2111) and the guide groove (211), so that the guide protrusion (221) transitions from the avoidance groove (2111) to the guide groove (211) via the connecting groove (2112) and moves relative to the housing (21) along the extension direction of the guide groove (211).

4. The charging plug (20) according to claim 1, characterized in that The charging pin (23) comprises a charging power pin (231) and a charging signal pin (232); the movable protective cover (22) is provided with a first pin hole (222) and a second pin hole (223); when the movable protective cover (22) is located at the second preset position, the charging power pin (231) is plugged into the first pin hole (222), and the charging signal pin (232) is plugged into the second pin hole (223).

5. The charging plug (20) according to claim 4, characterized in that An inner core (25) is provided in the accommodating cavity (212), and the inner core (25) includes a mounting body (251) and an isolation body (252) provided on the mounting body (251). The charging pins (23) are mounted on the mounting body (251), and the isolation body (252) is used to separate the charging power pins (231), and the charging power pins (231) and the charging signal pins (232). The movable protective cover (22) is also provided with an avoidance hole (225), and the avoidance hole (225) is used to avoid the isolation body (252).

6. The charging plug (20) according to claim 5, characterized in that A protective ring is provided on the inner wall of the avoidance hole (252), and the protective ring is used to contact the isolation body (252) when the movable protective cover (22) moves relative to the isolation body (252), so as to fill the gap between the movable protective cover (22) and the isolation body (252).

7. The charging plug (20) according to claim 5, characterized in that: The isolation body (252) includes a central portion (2521), two first isolation portions (2522) extending from the central portion (2521) along one side to form a first isolation cavity for accommodating one of the charging power pins (231), and two second isolation portions (2523) extending from the central portion (2521) along the other side to form a second isolation cavity for accommodating another of the charging power pins (231), and both the first isolation portion (2522) and the second isolation portion (2523) on the side close to the charging signal pins (232) with a larger number are provided with a guide convex surface (2524), and the guide convex surface (2524) is used to contact the power receiving signal pin (152) of the power receiving device (10) when the charging plug (20) is plugged into the power receiving device (10).

8. The charging plug (20) according to claim 5, characterized in that: The height of the top surface of the installation body (251) gradually decreases from the center toward the outside, and the outer side wall of the installation body (251) is provided with a plurality of first drainage holes (2512); A second drainage hole (213) is provided at the bottom of the housing (21).

9. A power receiving device (10) for connecting to a charging plug (20) according to any one of claims 1 to 8 to charge a vehicle battery, characterized in that: The power receiving device (10) includes a power receiving seat body (11), wherein a power receiving limit portion is provided in the power receiving seat body (11), and the power receiving limit portion is configured to abut against a movable protective cover (22) of the charging plug (20) during the process of inserting the charging plug (20) into the power receiving seat body (11), and to move the movable protective cover (22) from a first preset position to a second preset position.

10. A charging system, characterized in that: The invention comprises a charging plug (20) as described in any one of claims 1 to 8 and a power receiving device (10) as described in claim 9, wherein the charging plug (20) is connected to the power receiving device (10) to charge a vehicle battery.

Images