Power receiving device, charging plug and charging system

Abstract

The utility model discloses a power receiving device, a charging plug and a charging system, and relates to the technical field of vehicle charging, the power receiving device comprises a power receiving seat body and a power receiving moving part, the power receiving moving part is movably connected with the power receiving seat body, the power receiving seat body is provided with a power receiving sealing cavity, and a conductive elastic sheet and a switching electrode are arranged in the power receiving sealing cavity; the conductive elastic sheet has a first position and a second position. The charging plug is connected with the power receiving device so as to charge the vehicle-mounted battery, the charging plug comprises a shell with a containing cavity, the shell comprises a triggering part, the triggering part is used for triggering a power receiving moving part of the power receiving device to move, a charging electrode is arranged in the containing cavity, and the charging electrode is used for being connected with a power receiving electrode of the power receiving device. According to the arrangement mode, the technical problem that the vehicle is in danger due to short circuit of the positive electrode and the negative electrode of the battery caused by conduction of the positive electrode and the negative electrode of the power receiving device through water under the condition that the vehicle is soaked in water is solved.

Description

Technical Field

[0001] This application relates to the technical field of vehicle charging, and particularly relates to a power receiving device, a charging plug, and a charging system. Background Art

[0002] Currently, when an electric vehicle needs to be charged, the charging plug of the charging pile is connected to the power receiving seat of the electric vehicle, thereby realizing vehicle charging. However, in the process of realizing the above charging, the inventor found that there are at least the following problems:

[0003] Since the charging scenario of the electric vehicle changes with the change of the external weather environment, if extreme rain or snow weather is encountered, the power receiving seat is extremely likely to cause the positive and negative electrodes to conduct through water when the vehicle is immersed or flooded, and in severe cases, it will cause a short circuit between the positive and negative electrodes of the vehicle-mounted battery, resulting in danger. Summary of the Utility Model

[0004] The purpose of this application is to provide a power receiving device, a charging plug, and a charging system, which solves the problem that when the vehicle is immersed or flooded, the positive and negative electrodes of the power receiving device conduct through water, causing a short circuit between the positive and negative electrodes of the battery and endangering the vehicle.

[0005] To achieve the above purpose, this application provides a power receiving device for connecting to a charging plug to charge a vehicle-mounted battery. The power receiving device includes a power receiving seat body and a power receiving moving member. The power receiving moving member is movably connected to the power receiving seat body. The power receiving seat body has a power receiving sealing cavity. A conductive elastic sheet and a transfer electrode are provided in the power receiving sealing cavity. The conductive elastic sheet is used to connect to the cable of the vehicle-mounted battery, and the transfer electrode is used to connect to the power receiving electrode in the power receiving seat body. The conductive elastic sheet has a first position and a second position. The conductive elastic sheet is configured to move from the first position to the second position during the movement of the power receiving moving member along the first direction, so that the conductive elastic sheet contacts the transfer electrode, and move from the second position to the first position during the movement of the power receiving moving member along the second direction, so that the conductive elastic sheet is separated from the transfer electrode.

[0006] In some embodiments, a first elastic member and a second elastic member are further provided in the power receiving sealing cavity. Two ends of the first elastic member respectively abut against the power receiving moving member and the conductive elastic sheet. The first elastic member is used to push the conductive elastic sheet to move from the first position to the second position during the movement of the power receiving moving member along the first direction. Two ends of the second elastic member are respectively connected to the power receiving seat body and the conductive elastic sheet. The second elastic member is used to pull the conductive elastic sheet to move from the second position to the first position during the movement of the power receiving moving member along the second direction.

[0007] In some embodiments, the power-receiving moving member is provided with a protruding portion, the power-receiving seat body is provided with an extending portion extending into the power-receiving sealing cavity, one end of the power-receiving moving member is movably embedded in the extending portion, one end of the first elastic member abuts against the protruding portion, and the other end is sleeved outside the extending portion and abuts against the conductive elastic sheet.

[0008] In some embodiments, a third elastic member is further provided in the power-receiving sealing cavity. Both ends of the third elastic member respectively abut against the protruding portion and the extending portion. The third elastic member is used to provide an elastic force so that the power-receiving moving member has a tendency to move in the second direction.

[0009] In some embodiments, one end of the conductive elastic sheet is fixed to the power-receiving seat body, and the other end is suspended in the power-receiving sealing cavity. The conductive elastic sheet is provided with an avoidance hole for avoiding the extending portion.

[0010] In some embodiments, the power-receiving seat body includes a base and a cover plate. A sealing plate is provided between the base and the cover plate for sealing the gap between the base and the cover plate. A sealing ring is provided between the power-receiving moving member and the base for sealing the gap between the base and the power-receiving moving member. The base, the sealing plate, the power-receiving moving member and the sealing ring together form the power-receiving sealing cavity.

[0011] In some embodiments, the power-receiving electrode includes two power-receiving power electrodes and two groups of power-receiving signal electrodes. The two power-receiving power electrodes are arranged oppositely. The two groups of power-receiving signal electrodes are respectively arranged on both sides of the central connection line of the two power-receiving power electrodes. An isolation space is formed between the two power-receiving power electrodes and between any group of power-receiving signal electrodes and the two power-receiving power electrodes for the isolation inner core of the charging plug to be embedded.

[0012] In some embodiments, the power-receiving seat body is provided with a receiving cavity for accommodating the power-receiving electrode. The receiving cavity is provided with a limiting platform on one side of the power-receiving electrode. The limiting platform is used to contact and abut against the charging plug to prevent the charging plug from moving.

[0013] In some embodiments, the power-receiving seat body is provided with a power-receiving port. The power-receiving device further includes a protective cover, which is connected to the power-receiving seat body and covers the periphery of the power-receiving port;

[0014] The power-receiving device further includes a first power-receiving protection door and a second power-receiving protection door. Both the first power-receiving protection door and the second power-receiving protection door are movably connected to the protective cover. The first power-receiving protection door and the second power-receiving protection door are configured to switch from a closed state to an open state during the process of connecting the charging plug to the power-receiving device and to switch from an open state to a closed state during the process of the charging plug detaching from the power-receiving device.

[0015] In some embodiments, the protective cover is provided with a protective surface. A waterproof coating is provided on the protective surface. The distance between the protective surface and the power-receiving port gradually decreases from outside to inside.

[0016] The present application provides a charging plug for connecting to the power receiving device of any of the above to charge the vehicle-mounted battery. The charging plug includes a housing having a receiving cavity. The housing includes a trigger portion located on the periphery of the receiving cavity. The trigger portion is used to trigger the power receiving moving member of the power receiving device to move in the first direction. A charging electrode is provided in the receiving cavity, and the charging electrode is used to connect to the power receiving electrode of the power receiving device.

[0017] The present application further provides a charging system, including the power receiving device of any of the above and the charging plug of any of the above. The charging plug is connected to the power receiving device to charge the vehicle-mounted battery.

[0018] The power receiving device provided by the embodiment of the present application includes a power receiving seat body and a power receiving moving member. The power receiving moving member is movably connected to the power receiving seat body. The power receiving seat body has a power receiving sealed cavity. A conductive elastic sheet and a transfer electrode are provided in the power receiving sealed cavity. The conductive elastic sheet is used to connect to the cable of the vehicle-mounted battery, and the transfer electrode is used to connect to the power receiving electrode in the power receiving seat body. The conductive elastic sheet has a first position and a second position. In this way, during the movement of the power receiving moving member in the first direction, the conductive elastic sheet can move from the first position to the second position, so that the conductive elastic sheet contacts the transfer electrode. During the movement of the power receiving moving member in the second direction, the conductive elastic sheet can move from the second position to the first position, so that the conductive elastic sheet is separated from the transfer electrode.

[0019] At the same time, the embodiment of the present application further provides a charging plug for connecting to the above power receiving device to charge the vehicle-mounted battery. The charging plug includes a housing having a receiving cavity. The housing includes a trigger portion located on the periphery of the receiving cavity. The trigger portion is used to trigger the power receiving moving member of the power receiving device to move in the first direction. A charging electrode is provided in the receiving cavity, and the charging electrode is used to connect to the power receiving electrode of the power receiving device.

[0020] Such a setting brings the following beneficial effects: in the charging state, the charging plug is docked with the power receiving device, the trigger part of the charging plug pushes the power receiving moving part to move in the first direction, and the conductive spring moves from the first position to the second position, so that the conductive spring contacts the transfer electrode, thereby realizing the cable conduction between the power receiving electrode and the vehicle-mounted battery, and the charging plug is plugged into the power receiving device and starts charging. After charging is completed, the charging plug is unplugged, and the conductive spring moves from the second position to the first position, so that the conductive spring is separated from the transfer electrode, that is, in the non-charging state, the conductive spring is always disconnected from the transfer electrode. At the same time, since the setting of the power receiving sealed cavity can prevent moisture from entering the interior of the power receiving seat body, when the power receiving device is in a state of being sprayed or immersed in water, the conductive spring (battery electrode) and the transfer electrode are always disconnected, so as to prevent the positive and negative electrodes of the vehicle-mounted battery from short-circuiting after being connected, thereby preventing danger. In this way, the technical problem that when the power receiving device is immersed in water or soaked in water, the positive and negative electrodes of the power receiving device will be connected through water, causing the positive and negative electrodes of the battery to short-circuit, resulting in danger to the vehicle is solved. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the related technologies, the drawings required for use in the embodiments or the related technical descriptions are briefly introduced below. 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 paying any creative work.

[0022] Figure 1 This is a schematic diagram of the initial state of the power receiving device in the embodiment of the present application;

[0023] Figure 2 This is a schematic diagram of the charging state of the power receiving device in the embodiment of the present application;

[0024] Figure 3 This is a schematic diagram of the structure of the power receiving device in the embodiment of the present application;

[0025] Figure 4 for Figure 3 Another angle schematic diagram of the power receiving device shown;

[0026] Figure 5 is a schematic diagram of the structure of another power receiving device;

[0027] Figure 6 This is a schematic diagram of the overall structure of the charging plug in the embodiment of the present application;

[0028] Figure 7 for Figure 6 Schematic diagram of the internal structure of the charging plug.

[0029] in:

[0030] 10-power receiving device, 11-power receiving seat body, 111-power receiving sealed cavity, 112-base, 113-cover plate, 114-sealing plate, 1141-extension part, 115-sealing ring, 12-power receiving moving part, 121-protrusion, 13-conductive spring sheet, 131-avoidance hole, 14-transfer electrode, 15-power receiving electrode, 151-power receiving power electrode, 152-power receiving signal electrode, 153-isolation space, 16-first elastic member, 17-second elastic member, 18-third elastic member, 19-accommodating cavity, 191-limiting platform, 110-power receiving port, 1101-protective cover, 11011-protective surface;

[0031] 20 - charging plug, 21 - housing, 212 - accommodating cavity, 213 - triggering part, 23 - charging electrode, 231 - charging power electrode, 232 - charging signal electrode, 25 - isolation core;

[0032] 30-Cables. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0034] In order to enable those skilled in the art to better understand the present application, the present application is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0035] The power receiving device 10 provided in the embodiment of the present application is as follows: Figures 1 to 5 shown.

[0036] The power receiving device 10 is used to be connected to a charging plug 20 to charge a vehicle-mounted battery. The power receiving device 10 includes a power receiving seat body 11 and a power receiving movable member 12 . The power receiving movable member 12 is movably disposed in the power receiving seat body 11 .

[0037] Specifically, the power receiving moving member 12 can move relative to the power receiving seat body 11 along a first direction, and can also move relative to the power receiving seat body 11 along a second direction. According to the movement of the power receiving moving member 12, the first direction and the second direction can be set to opposite directions, wherein the first direction is Figure 1 The vertical upward direction is shown, and the second direction is Figure 1 The vertical downward direction is shown.

[0038] The power receiving base body 11 has a power receiving sealed cavity 111. The power receiving sealed cavity 111 refers to the inner cavity of the power receiving base body 11 that can prevent moisture from entering. Inside the power receiving sealed cavity 111, there are a conductive elastic sheet 13 and a transfer electrode 14. The conductive elastic sheet 13 is used to connect with the cable 30 of the vehicle-mounted battery, and the transfer electrode 14 is used to connect with the power receiving electrode 15 inside the power receiving base body 11. The power receiving electrode 15 includes a power receiving power electrode 151 and a power receiving signal electrode 152. The conductive elastic sheet 13 has a first position and a second position.

[0039] Among them, the first position can be the initial position of the conductive elastic sheet 13, and the second position can be the final position of the conductive elastic sheet 13. When the conductive elastic sheet 13 is in the final position, the conductive elastic sheet 13 can contact the transfer electrode 14, so that the cable 30 of the vehicle-mounted battery and the power receiving electrode 15 are conducted, achieving the purpose of charging the vehicle-mounted battery.

[0040] In this way, during the process of the power receiving moving part 12 moving along the first direction, the conductive elastic sheet 13 can move from the first position to the second position, so that the conductive elastic sheet 13 contacts the transfer electrode 14. During the process of the power receiving moving part 12 moving along the second direction, the conductive elastic sheet 13 can move from the second position to the first position, so that the conductive elastic sheet 13 disengages from the transfer electrode 14.

[0041] Through the power receiving device 10 arranged in this way, in the charging state, when the charging plug 20 is docked with the power receiving device 10, the triggering part 213 of the charging plug 20 pushes the power receiving moving part 12 to move along the first direction, and the conductive elastic sheet 13 moves from the first position to the second position, so that the conductive elastic sheet 13 contacts the transfer electrode 14, thereby realizing the conduction between the power receiving electrode 15 and the cable 30 of the vehicle-mounted battery. After the charging plug 20 is plugged into the power receiving device 10 in place, the charging is started. After the charging is completed, the charging plug 20 is pulled out, and the conductive elastic sheet 13 moves from the second position to the first position, so that the conductive elastic sheet 13 disengages from the transfer electrode 14. That is, in the non-charging state, the conductive elastic sheet 13 is always disconnected from the transfer electrode 14. At the same time, due to the setting of the power receiving sealed cavity 111, moisture can be prevented from entering the inside of the power receiving base body 11. Therefore, when the power receiving device is in a state of being splashed with water or immersed in water, it is always ensured that the conductive elastic sheet 13 (battery electrode) and the transfer electrode 14 are disconnected, preventing the positive and negative poles of the vehicle-mounted battery from being short-circuited after being conducted, resulting in danger.

[0042] In this way, the technical problem that the power receiving device may cause the positive and negative poles of the battery to be short-circuited due to the conduction of the positive and negative poles of the power receiving device through water in the case of the vehicle being immersed in water or flooded is solved.

[0043] In some embodiments, in order to facilitate the switching of the conductive elastic sheet 13 between the first position and the second position, a first elastic member 16 and a second elastic member 17 are further provided inside the power receiving sealed cavity 111.

[0044] Specifically, the two ends of the first elastic member 16 are respectively in contact with the power receiving moving member 12 and the conductive elastic sheet 13, so that when the power receiving moving member 12 moves along the first direction, the first elastic member 16 pushes the conductive elastic sheet 13 upward from the first position to the second position until the conductive elastic sheet 13 reaches the second position and contacts the transfer electrode 14. The two ends of the second elastic member 17 are respectively connected to the power receiving seat body 11 and the conductive elastic sheet 13, and when the power receiving moving member 12 moves along the second direction, the second elastic member 17 pulls the conductive elastic sheet 13 from the second position to the first position, thereby resetting the conductive elastic sheet 13.

[0045] It can be understood that both the first elastic member 16 and the second elastic member 17 are spring members, and the difference is that the first elastic member 16 is mainly used to provide pressure, and the first elastic member 16 can transmit the movement and power of the powered moving member 12 to the conductive spring 13 to push the conductive spring 13 to move from the first position to the second position, while the second elastic member 17 is mainly used to provide tension, so as to facilitate the resetting of the conductive spring 13. For example, the first elastic member 16 can be a compression spring, and the second elastic member 17 can be a tension spring.

[0046] Compared with the use of a rigid connector, the present embodiment uses a first elastic member 16, which can not only transmit the movement and power of the powered moving member 12 to the conductive spring sheet 13, but also play a buffering role to prevent the service life of the conductive spring sheet 13 from being affected by excessive plugging force during the plugging process of the charging plug 20.

[0047] To facilitate the assembly of the first elastic member 16, the power receiving moving member 12 is provided with a protrusion 121, and the power receiving seat body 11 is provided with an extension portion 1141 extending into the power receiving sealed cavity 111. The extension portion 1141 is a hollow structure. One end of the power receiving moving member 12 is movably embedded in the inner cavity of the extension portion 1141. One end of the first elastic member 16 abuts against the protrusion 121, and the other end is sleeved on the outside of the extension portion 1141 and abuts against the conductive spring sheet 13.

[0048] As a result, when the power receiving moving member 12 moves along the first direction, the protrusion 121 moves upward, the first elastic member 16 is compressed and deformed, and pushes the conductive spring 13 to move from the first position to the second position.

[0049] It should be noted that the extension portion 1141 is specifically a structure extending downward from the power receiving socket body 11, and the extension portion 1141 should have a certain length and be configured as follows: on the one hand, the extension portion 1141 can guide the first elastic member 16 to ensure that the first elastic member 16 is deformed along its axial direction after being compressed, thereby preventing the first elastic member 16 from shifting during the compression process; on the other hand, the stroke of the power receiving moving member 12 in the first direction can be determined by the length of the extension portion 1141. Since the power receiving moving member 12 is movably embedded in the inner cavity of the extension portion 1141, the length of the extension portion 1141 should at least ensure that the conductive spring piece 13 can move from the first position to the second position to achieve contact with the transfer electrode 14.

[0050] Furthermore, a third elastic member 18 is provided in the power receiving sealed cavity 111 , and two ends of the third elastic member 18 are respectively in contact with the protrusion 121 and the extension 1141 . The third elastic member 18 is used to provide elastic force so that the power receiving movable member 12 has a tendency to move along the second direction.

[0051] Specifically, the protrusion 121 is specifically the annular protrusion 121 of the powered moving member 12, and the annular protrusion 121 is a stepped structure having two stepped surfaces, one of which is used for abutment by the first elastic member 16, and the other is used for abutment by the third elastic member 18. Of course, the third elastic member 18 can also be a compression spring.

[0052] In this way, during the movement of the powered movable member 12 along the first direction, the third elastic member 18 is compressed and deformed, so that the powered movable member 12 is always subjected to pressure from the third elastic member 18 during the movement along the first direction. After the charging plug 20 is unplugged, the powered movable member 12 can quickly descend and reset under the pressure of the third elastic member 18.

[0053] To facilitate the assembly of the conductive spring 13 , one end of the conductive spring 13 is fixed to the power receiving seat body 11 , and the other end is cantilevered in the power receiving sealed cavity 111 . The conductive spring 13 is provided with an avoidance hole 131 for avoiding the extension portion 1141 .

[0054] Specifically, one end of the conductive spring sheet 13 fixed to the power receiving seat body 11 can be bent, and the upwardly bent portion abuts between two interconnected structures (the base 112 and the sealing plate 114 described below) of the power receiving seat body 11, so that one end of the conductive spring sheet 13 can be stably assembled in the power receiving seat body 11, preventing the conductive spring sheet 13 from being separated from the power receiving seat body 11 during the power receiving process. Of course, according to actual needs, the conductive spring sheet 13 can also be fastened to the power receiving seat body 11 using a detachable connector (bolt or screw).

[0055] It should be noted that one end of the conductive elastic piece 13 with a cantilever structure at least partially covers the transfer electrode 14, so as to ensure that when the conductive elastic piece 13 moves from the first position to the second position, it can contact the transfer electrode 14.

[0056] In some embodiments, the power receiving seat body 11 includes a base 112 and a cover plate 113. To ensure the sealing performance, a sealing plate 114 is provided between the base 112 and the cover plate 113. The sealing plate 114 is used to seal the gap between the base 112 and the cover plate 113. At the same time, a sealing ring 115 is provided between the power receiving moving part 12 and the base 112. The sealing ring 115 is used to seal the gap between the base 112 and the power receiving moving part 12.

[0057] With such an arrangement, the base 112, the sealing plate 114, the power receiving moving part 12, and the sealing ring 115 can jointly form a power receiving sealed cavity 111. When the power receiving device 10 is in a state of being splashed with water or immersed in water, it can prevent water from entering the power receiving sealed cavity 111 and causing a short - circuit accident.

[0058] The working process of the power receiving device 10 is specifically described below:

[0059] During charging, the charging plug 20 is inserted into the interior of the power receiving device 10. The trigger part 213 of the charging plug 20 pushes the power receiving moving part 12 to rise. The power receiving moving part 12 pushes the first elastic member 16 and the third elastic member 18. The first elastic member 16 pushes the conductive elastic piece 13 to rise. During the rising process of the conductive elastic piece 13, the second elastic member 17 is pulled, and the second elastic member 17 is stretched. After the first elastic member 16 pushes the conductive elastic piece 13 to rise, the conductive elastic piece 13 contacts the transfer electrode 14, realizing the conduction between the power receiving electrode 15 and the cable 30 of the vehicle - mounted battery. After the charging plug 20 is plugged into the power receiving device 10 in place, the charging starts.

[0060] After charging is completed, the charging plug 20 is pulled out. During the pulling - out process of the charging plug 20, as the charging plug 20 disengages, the third elastic member 18 pushes the power receiving moving part 12 to move downward, and the first elastic member 16 and the second elastic member 17 return to their original positions. During the reset process of the second elastic member 17, the conductive elastic piece 13 is pulled back to its original position, ensuring that the conductive elastic piece 13 is separated from the transfer electrode 14. After the charging plug 20 is pulled out, the charging ends.

[0061] In some embodiments, the power receiving electrode 15 includes two power receiving power electrodes 151 and two groups of power receiving signal electrodes 152. The two power receiving power electrodes 151 are arranged oppositely. The two groups of power receiving signal electrodes 152 are respectively arranged on both sides of the central connection line of the two power receiving power electrodes 151. An isolation space 153 is formed between the two power receiving power electrodes 151 and between any group of power receiving signal electrodes 152 and the two power receiving power electrodes 151. The isolation space 153 is used for the isolation inner core 25 of the charging plug 20 to be embedded.

[0062] When the charging plug 20 is plugged into the power receiving device 10, the charging power electrode 231 and the charging signal electrode 232 of the charging plug 20 are respectively inserted into the power receiving power electrode 151 and the power receiving signal electrode 152 of the power receiving device 10. At the same time, the isolation inner core 25 of the charging plug 20 is embedded in the isolation space 153 of the power receiving device 10. With such a setting, it can play a role in guiding and positioning the charging plug 20 when it is plugged into the power receiving device 10, so that the charging power electrode 231 is correspondingly inserted into the power receiving power electrode 151, the charging signal electrode 232 is correspondingly inserted into the power receiving signal electrode 152, and it is ensured that the charging plug 20 will not be skewed during the plugging process, which is beneficial to improving the stability and reliability of charging.

[0063] In some embodiments, the power receiving seat body 11 is provided with a receiving cavity 19 for accommodating the power receiving electrode 15. The receiving cavity 19 is provided with a limiting platform 191 on one side of the power receiving electrode 15. The limiting platform 191 is used to contact and abut against the charging plug 20 to prevent the charging plug 20 from moving.

[0064] It can be seen that the limiting platform 191 can be a convex platform with a triangular cross-section. The height of the limiting platform 191 should be less than the height of the power receiving power electrode 151, and the power receiving moving part 12 is movably connected to the limiting platform 191. The triggering part 213 of the charging plug 20 can push the power receiving moving part 12 to move relative to the limiting platform 191.

[0065] The limiting platform 191, as a limiting structure, is used to limit the movement of the charging plug 20 during the process of the charging plug 20 being plugged into the power receiving device 10, so as to prevent the charging plug 20 from being overly inserted into the power receiving device 10, prevent the charging plug 20 and the power receiving device 10 from being damaged, and play a role in protecting the charging plug 20 and the power receiving device 10.

[0066] In addition, the power receiving seat body 11 is provided with a power receiving port 110. The power receiving device 10 further includes a protective cover 1101. The protective cover 1101 is connected to the power receiving seat body 11, and the protective cover 1101 covers the periphery of the power receiving port 110, so as to avoid directly exposing the power receiving port 110 and play a role in protecting the power receiving port 110.

[0067] Furthermore, the power receiving device 10 further includes a first power receiving protection door and a second power receiving protection door. Both the first power receiving protection door and the second power receiving protection door are movably connected to the protective cover 1101, and the first power receiving protection door and the second power receiving protection door are configured to switch from a closed state to an open state during the process of the charging plug 20 being connected to the power receiving device 10, and to switch from an open state to a closed state during the process of the charging plug 20 being detached from the power receiving device 10.

[0068] That is to say, in the non-charging state, the first power receiving protection door and the second power receiving protection door close the power receiving port; during the charging process, as the charging plug 10 is inserted into the power receiving device 20, the first power receiving protection door and the second power receiving protection door open to allow the charging plug 10 to be inserted into the power receiving device 20 to achieve charging connection.

[0069] This setting method ensures that during the connection and disconnection of the charging plug 10 and the power receiving device 20, the electrical connectors are not exposed to the external environment, thus preventing electrical short circuits, intrusion of water or other pollutants, and ensuring the safety of the charging process.

[0070] Of course, according to actual needs, in order to facilitate the automatic opening and closing of the first power receiving protection door and the second power receiving protection door, a first spring and a second spring can also be provided. The two ends of the first spring are respectively abutted against the first power receiving protection door and the power receiving seat body 11. The first spring is used to provide an elastic force to the first power receiving protection door, so that the first power receiving protection door always has a tendency to approach the second power receiving protection door. Similarly, the two ends of the second spring are respectively abutted against the second power receiving protection door and the power receiving seat body 11. The second spring is used to provide an elastic force to the second power receiving protection door, so that the second power receiving protection door always has a tendency to approach the first power receiving protection door.

[0071] Furthermore, the protective cover 1101 is provided with a protective surface 11011. The distance between the protective surface 11011 and the power receiving port 110 gradually decreases from the outside to the inside. That is to say, the structure of the protective cover 1101 located outside the power receiving port 110 is in the shape of a flared opening. At the same time, the protective surface 11011 is provided with a waterproof coating, and the waterproof coating has the characteristic of low adhesion. This can prevent dust, sediment, rain and snow, etc. from adhering to the inner wall surface of the protective cover 1101, and reduce the possibility of dust, sediment, rain and snow, etc. entering the inside of the power receiving seat body 11 from the power receiving port 110 and thus polluting the power receiving components inside the power receiving seat body 11.

[0072] This application also provides a charging plug 20, as Figure 6 and Figure 7 shown.

[0073] The charging plug 20 is connected to the power receiving device 10 described in the above embodiment to charge the vehicle-mounted battery.

[0074] Specifically, the charging plug 20 includes a shell 21 having a accommodating cavity 212, and the shell 21 includes a trigger part 213. The trigger part 213 is located on the periphery of the accommodating cavity 212. The trigger part 213 is used to trigger the power receiving moving part 12 of the power receiving device 10 to move along the first direction when the charging plug 20 is plugged into the power receiving device 10, so that the conductive spring piece 13 moves from the first position to the second position and contacts the transfer electrode 14, thereby realizing the conduction between the power receiving electrode 15 and the cable 30 of the vehicle battery, and charging is started after the charging plug 20 is plugged into the power receiving device 10.

[0075] In addition, a charging electrode 23 is disposed in the accommodating cavity 212 , and the charging electrode 23 is used to be connected to the power receiving electrode 15 of the power receiving device 10 .

[0076] 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 trigger part 213 pushes the power receiving movable part 12 to move along the first direction, and the conductive spring piece 13 moves from the first position to the second position, so that the conductive spring piece 13 and the transfer electrode 14 are in contact and conductive. At the same time, the charging electrode 23 is inserted into the power receiving electrode 15, and charging is started after the charging plug 20 and the power receiving device 10 are plugged into place.

[0077] In some embodiments, the charging electrode 23 includes a charging power electrode 231 and a charging signal electrode 232. The charging power electrode 231 and the charging signal electrode 232 are respectively plugged into the receiving power electrode 151 and the receiving signal electrode 152. An isolation core 25 is provided in the accommodating cavity 212. The isolation core 25 is used to separate each charging power electrode 231, and the charging power electrode 231 and the charging signal electrode 232.

[0078] When the charging plug 20 is plugged into the power receiving device 10 , the charging power electrode 231 and the charging signal electrode 232 of the charging plug 20 are respectively inserted into the power receiving power electrode 151 and the power receiving signal electrode 152 of the power receiving device 10 . At the same time, the isolation core 25 of the charging plug 20 is embedded in the isolation space 153 of the power receiving device 10 .

[0079] Such a configuration can guide and position the charging plug 20 when plugged into the power receiving device 10 during charging, so that the charging power electrode 231 is correspondingly inserted into the power receiving power electrode 151, and the charging signal electrode 232 is correspondingly inserted into the power receiving signal electrode 152, and ensure that the charging plug 20 will not be skewed during the plugging process, which is beneficial to improving the stability and reliability of charging.

[0080] During charging, the charging plug 20 is inserted into the interior of the power receiving device 10. The charging power electrode 231 and the charging signal electrode 232 of the charging plug 20 are respectively inserted into the power receiving power electrode 151 and the power receiving signal electrode 152 of the power receiving device 10. And the trigger part 213 of the charging plug 20 pushes the power receiving moving part 12 to move in the first direction, so that the conductive elastic sheet 13 contacts the adapter electrode 14, thereby realizing the conduction between the power receiving electrode 15 and the cable 30 of the vehicle-mounted battery. After the charging plug 20 is plugged into the power receiving device 10 in place, charging is started. After charging is completed, the charging plug 20 is pulled out.

[0081] A charging system provided by the present application includes the power receiving device 10 and the charging plug 20 described in the above specific embodiments. The charging plug 20 is connected to the power receiving device 10 to charge the vehicle-mounted battery.

[0082] It should be noted that in this specification, relational terms such as first and second are only used to distinguish one entity from several other entities, and do not necessarily require or imply any such actual relationship or order between these entities.

[0083] The power receiving device, the charging plug and the charging system provided by the present application have been introduced in detail above. Specific examples are used in this article to elaborate on the principle and implementation manner of the present application. The description of the above embodiments is only used to help understand the solution and its core idea of the present application. It should be pointed out that for those of ordinary skill in the art, without departing from the principle of the present application, several improvements and modifications can be made to the present application, and these improvements and modifications also fall within the protection scope of the present application.

Claims

1. A power receiving device (10), characterized in that: The power receiving device (10) is used to be connected to a charging plug (20) to charge a vehicle-mounted battery. The power receiving device (10) comprises a power receiving seat body (11) and a power receiving movable member (12). The power receiving movable member (12) is movably connected to the power receiving seat body (11). The power receiving seat body (11) has a power receiving sealed cavity (111). A conductive spring sheet (13) and a transfer electrode (14) are arranged in the power receiving sealed cavity (111). The conductive spring sheet (13) is used to be connected to a cable (30) of the vehicle-mounted battery. The transfer electrode (14) is used to be connected to the power receiving seat body (111). The conductive spring sheet (13) is connected to a power receiving electrode (15) in a seat body (11), and has a first position and a second position. The conductive spring sheet (13) is configured to move from the first position to the second position when the power receiving movable member (12) moves along a first direction so that the conductive spring sheet (13) and the switching electrode (14) are in contact, and to move from the second position to the first position when the power receiving movable member (12) moves along a second direction so that the conductive spring sheet (13) is separated from the switching electrode (14).

2. The power receiving device (10) according to claim 1, characterized in that: A first elastic member (16) and a second elastic member (17) are further provided in the power receiving sealed cavity (111); two ends of the first elastic member (16) are respectively in contact with the power receiving movable member (12) and the conductive spring sheet (13); the first elastic member (16) is used to push the conductive spring sheet (13) from the first position to the second position when the power receiving movable member (12) moves along the first direction; two ends of the second elastic member (17) are respectively connected to the power receiving seat body (11) and the conductive spring sheet (13); the second elastic member (17) is used to pull the conductive spring sheet (13) from the second position to the first position when the power receiving movable member (12) moves along the second direction.

3. The power receiving device (10) according to claim 2, characterized in that: The power receiving movable member (12) is provided with a protruding portion (121), and the power receiving seat body (11) is provided with an extending portion (1141) extending into the power receiving sealed cavity (111); one end of the power receiving movable member (12) is movably embedded in the extending portion (1141), and one end of the first elastic member (16) is in contact with the protruding portion (121), and the other end is sleeved on the outside of the extending portion (1141) and in contact with the conductive spring sheet (13).

4. The power receiving device (10) according to claim 3, characterized in that: A third elastic member (18) is also provided in the power receiving sealed cavity (111), and two ends of the third elastic member (18) are respectively in contact with the protruding portion (121) and the extending portion (1141), and the third elastic member (18) is used to provide an elastic force so that the power receiving movable member (12) has a tendency to move along the second direction.

5. The power receiving device (10) according to claim 3, characterized in that: One end of the conductive spring sheet (13) is fixed to the power receiving seat body (11), and the other end is suspended in the power receiving sealed cavity (111), and the conductive spring sheet (13) is provided with an avoidance hole (131), and the avoidance hole (131) is used to avoid the extension part (1141).

6. The power receiving device (10) according to any one of claims 1 to 5, characterized in that: The power receiving seat body (11) comprises a base (112) and a cover plate (113); a sealing plate (114) is provided between the base (112) and the cover plate (113); the sealing plate (114) is used to seal the gap between the base (112) and the cover plate (113); a sealing ring (115) is provided between the power receiving movable part (12) and the base (112); the sealing ring (115) is used to seal the gap between the base (112) and the power receiving movable part (12); the base (112), the sealing plate (114), the power receiving movable part (12) and the sealing ring (115) together form the power receiving sealed cavity (111).

7. The power receiving device (10) according to any one of claims 1 to 5, characterized in that: The power receiving electrode (15) comprises two power receiving electrodes (151) and two groups of power receiving signal electrodes (152); the two power receiving electrodes (151) are arranged opposite to each other; the two groups of power receiving signal electrodes (152) are respectively arranged on both sides of a center line connecting the two power receiving electrodes (151); an isolation space (153) is formed between the two power receiving electrodes (151) and between any group of the power receiving signal electrodes (152) and the two power receiving electrodes (151); the isolation space (153) is used for embedding an isolation core (25) of the charging plug (20).

8. The power receiving device (10) according to any one of claims 1 to 5, characterized in that: The power receiving seat body (11) is provided with a receiving cavity (19) for accommodating the power receiving electrode (15); the receiving cavity (19) is provided with a limiting platform (191) located on one side of the power receiving electrode (15); the limiting platform (191) is used to contact and abut against the charging plug (20) to prevent the charging plug (20) from moving.

9. The power receiving device (10) according to any one of claims 1 to 5, characterized in that: The power receiving seat body (11) is provided with a power receiving port (110), and the power receiving device (10) further comprises a protective cover (1101), wherein the protective cover (1101) is connected to the power receiving seat body (11) and covers the periphery of the power receiving port (110); The power receiving device (10) further comprises a first power receiving protection door and a second power receiving protection door, wherein the first power receiving protection door and the second power receiving protection door are both movably connected to the protection cover (1101), and the first power receiving protection door and the second power receiving protection door are configured to switch from a closed state to an open state during the process of connecting the charging plug (20) to the power receiving device (10), and to switch from an open state to a closed state during the process of disconnecting the charging plug (20) from the power receiving device (10).

10. The power receiving device (10) according to claim 9, characterized in that: The protective cover (1101) is provided with a protective surface (11011), a waterproof coating is provided on the protective surface (11011), and the distance between the protective surface (11011) and the power receiving port (110) gradually decreases from the outside to the inside.

11. A charging plug (20), characterized in that: A charging plug (20) for connecting to a power receiving device (10) as claimed in any one of claims 1 to 10 to charge a vehicle battery, the charging plug (20) comprising a housing (21) having a housing cavity (212), the housing (21) comprising a triggering portion (213), the triggering portion (213) being located at the periphery of the housing cavity (212), the triggering portion (213) being used to trigger a power receiving moving part (12) of the power receiving device (10) to move along a first direction, a charging electrode (23) being provided in the housing cavity (212), the charging electrode (23) being used to connect to a power receiving electrode (15) of the power receiving device (10).

12. A charging system, characterized in that: It comprises a power receiving device (10) as described in any one of claims 1 to 10 and a charging plug (20) as described in claim 11, wherein the charging plug (20) is connected to the power receiving device (10) to charge a vehicle battery.

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