Charging plug, charging gun and charging assembly

Abstract

The utility model discloses a charging plug, a charging gun and a charging assembly, and relates to the technical field of charging, the first surface of the plug body of the charging plug is provided with at least two charging terminals and at least two fluid interfaces, and the plug body also defines a fluid channel and a fluid flowing cavity. The fluid flowing cavity communicates with the fluid channel and the fluid connector and is used for allowing heat exchange fluid to flow through, and the fluid connector is used for being communicated with a cooling loop of external equipment. In the first direction, the axis of at least one fluid interface is located between the axes of the two charging terminals, and the first direction is located on the first surface, so that the charging terminals with relatively small cross-sectional areas can more fully utilize the space on the outer side of the arrangement direction of the fluid interfaces with relatively large cross-sectional areas; the arrangement between the charging terminal integrated on the charging plug and the fluid interface is more compact, and the overall occupied volume of the interface for connecting the plug body and the external equipment is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of charging, and particularly relates to a charging plug, a charging gun and a charging assembly. Background Art

[0002] On the vehicle body of electric vehicles such as new energy vehicles, eVTOL (Electric Vertical Takeoff and Landing), and new energy ships, which use electric energy as the main power, a charging socket that is pluggable and unplugable with a charging plug is provided. When the charging plug and the charging socket are matched, multiple terminals on the charging plug are respectively matched with corresponding interfaces on the charging socket.

[0003] In addition, when the electric vehicle is under ground maintenance, it is sometimes necessary to adjust the temperature of the battery cells of the power battery pack to a specified temperature; for example, after connecting the ground thermal management system to the electric vehicle through a thermal management interface component, a heat exchange fluid such as a coolant is transported into the cooling circuit corresponding to the power battery pack of the electric vehicle, so as to perform active thermal management.

[0004] Therefore, in the related art, the electric vehicle needs to be connected through the terminals on the charging plug and the interface component connecting the cooling circuit. There are many interfaces for connecting to external devices such as electric vehicles, and the overall occupied volume is large. Summary of the Utility Model

[0005] The main purpose of the utility model is to propose a charging plug, a charging gun and a charging assembly, aiming to reduce the overall occupied volume of the interfaces for connecting to external devices.

[0006] To achieve the above purpose, a charging plug proposed by the utility model includes a plug body. At least two charging terminals and at least two fluid interfaces are arranged on the first surface of the plug body. One end of the plug body corresponding to the first surface is adapted to be detachably matched with the insertion slot of the charging socket; the plug body further defines:

[0007] A fluid channel for connecting a cooling source;

[0008] A fluid flow-through cavity that respectively communicates with the fluid channel and the fluid interface. The fluid flow-through cavity is used for the heat exchange fluid from the cooling source to flow through, and the fluid interface is used to connect to the cooling circuit of the external device;

[0009] Along a first direction, the axis of at least one of the fluid interfaces is located between the axes of the two charging terminals, and the first direction is located on the first surface.

[0010] In one embodiment, along the first direction, at least one row of the fluid interfaces is provided on the first surface, and each row of the fluid interfaces has spaced-apart fluid interfaces in the second direction, where the second direction is parallel to the first surface and intersects the first direction; and / or,

[0011] Along the first direction, at least part of the charging terminals are disposed between the edge of the first surface and all of the fluid interfaces.

[0012] In one embodiment, along the first direction, at least two rows of the fluid interfaces are provided on the first surface, and the at least two rows of the fluid interfaces include four arranged around the central region of the first surface; on the first surface, for the four fluid interfaces arranged around the central region of the first surface, the centers of the respective fluid interfaces form a virtual quadrilateral as endpoints, and at least part of the charging terminals are disposed outside the virtual quadrilateral; on the first surface, a part of the charging terminals are disposed outside the virtual quadrilateral, and another part of the charging terminals are disposed inside the virtual quadrilateral.

[0013] In one embodiment, the plug body includes a cabin and at least two wire harnesses, and the first surface is disposed at the end of the cabin;

[0014] A liquid inlet pipe and a liquid outlet pipe are provided on the second surface of the cabin, and both the liquid inlet pipe and the liquid outlet pipe are adapted to allow an insulating heat exchange fluid to flow through, and the liquid inlet pipe and the liquid outlet pipe are respectively communicated with the fluid flow-through cavity, and the fluid channel includes the liquid inlet pipe and the liquid outlet pipe;

[0015] A fluid flow-through cavity is defined in the cabin, and the fluid flow-through cavity includes a liquid inlet cooling cavity and a liquid outlet cooling cavity, and the liquid inlet cooling cavity and the liquid outlet cooling cavity are respectively disposed on both sides of the central axis of the cabin, and a part of all the fluid interfaces are communicated with the liquid inlet pipe through the liquid inlet cooling cavity, and another part of all the fluid interfaces are communicated with the liquid outlet pipe through the liquid outlet cooling cavity.

[0016] In one embodiment, the plurality of charging terminals include at least two low-voltage emergency power supply terminals and at least two high-voltage DC terminals, and the low-voltage emergency power supply terminals and the high-voltage DC terminals respectively penetrate through the inner cavity defined by the plug body and are connected to the corresponding wire harnesses, or extend into the inner cavity defined by the plug body and are connected to the corresponding wire harnesses.

[0017] In one embodiment, a drying cavity is defined in the cabin, and the drying cavity, the liquid inlet cooling cavity and the liquid outlet cooling cavity are arranged side by side, and the drying cavity is independent of the liquid inlet cooling cavity and the liquid outlet cooling cavity respectively;

[0018] Wherein, the low-voltage emergency power supply terminal penetrates through the drying chamber and is connected to the corresponding low-voltage power supply charging harness, or extends into the drying chamber and is connected to the corresponding low-voltage power supply charging harness; and / or

[0019] In the radial cross-section of the cabin, the drying chamber is located at the geometric center of the cabin, and the liquid inlet cooling chamber and the liquid outlet cooling chamber are respectively located on both sides of the drying chamber.

[0020] In an embodiment, a first surface of the cabin has a first area facing the liquid inlet cooling chamber, a second area facing the liquid outlet cooling chamber, and a third area corresponding to the drying chamber. The first direction is parallel to the direction from the first area to the second area, and the third area is located within the virtual quadrilateral;

[0021] A first fluid input port and a second fluid input port among the plurality of fluid interfaces are arranged in the first area and are respectively communicated with the liquid inlet cooling chamber, and are spaced apart from each other in the second direction;

[0022] A first fluid output port and a second fluid output port among the plurality of fluid interfaces are arranged in the second area and are respectively communicated with the liquid outlet cooling chamber. The second fluid input port and the second fluid output port are spaced apart in the second direction; the first fluid input port and the first fluid output port are relatively arranged and spaced apart from each other in the first direction, and the second fluid input port and the second fluid output port are relatively arranged and spaced apart from each other in the first direction;

[0023] The high-voltage DC terminal includes a high-voltage DC positive terminal and a high-voltage DC negative terminal, and the charging terminal further includes a grounding terminal, a low-voltage auxiliary power supply positive terminal, a low-voltage auxiliary power supply negative terminal, a first communication terminal, a second communication terminal, a first charging connection terminal, and a second charging connection terminal;

[0024] The grounding terminal, the low-voltage auxiliary power supply positive terminal, the low-voltage auxiliary power supply negative terminal, and the high-voltage DC positive terminal are all arranged in the first area and are spaced apart from each other. In the second direction, the grounding terminal, the low-voltage auxiliary power supply positive terminal, the low-voltage auxiliary power supply negative terminal, and the high-voltage DC positive terminal are all located between the first fluid input port and the second fluid input port;

[0025] The high-voltage DC negative terminal, the first communication terminal, the second communication terminal, the first charging connection terminal, and the second charging connection terminal are all arranged in the second area and are spaced apart from each other; in the second direction, the high-voltage DC negative terminal, the first communication terminal, the second communication terminal, the first charging connection terminal, and the second charging connection terminal are all located between the first fluid output port and the second fluid output port;

[0026] The low-voltage emergency power supply terminals include an emergency power supply positive terminal, an emergency power supply negative terminal, a first emergency power supply communication terminal, a second emergency power supply communication terminal, and an emergency power supply grounding terminal. The emergency power supply positive terminal, the emergency power supply negative terminal, the first emergency power supply communication terminal, the second emergency power supply communication terminal, and the emergency power supply grounding terminal are all disposed in the third area and are spaced apart from each other.

[0027] In one embodiment, in the radial cross-section of the cabin body, the shape of the drying chamber is circular or elliptical, and the shapes of the sides of the liquid inlet cooling chamber and the liquid outlet cooling chamber facing away from the drying chamber are both arc-shaped.

[0028] In one embodiment, a part of the charging terminals penetrate through the liquid inlet cooling chamber and are connected to corresponding wire harnesses, or extend into the liquid inlet cooling chamber and are connected to corresponding wire harnesses; another part of the charging terminals penetrate through the liquid outlet cooling chamber and are connected to corresponding wire harnesses, or extend into the liquid outlet cooling chamber and are connected to corresponding wire harnesses;

[0029] A part of the high-voltage DC terminals penetrate through the liquid inlet cooling chamber and are connected to corresponding wire harnesses, or extend into the liquid inlet cooling chamber and are connected to corresponding wire harnesses; another part of the high-voltage DC terminals penetrate through the liquid outlet cooling chamber and are connected to corresponding wire harnesses, or extend into the liquid outlet cooling chamber and are connected to corresponding wire harnesses.

[0030] In one embodiment, the plug body further includes a housing, a handheld part, and a first fitting. The housing has a mounting hole that axially penetrates the housing, and one axial end of the housing is a coupling end, and the coupling end is adapted to be detachably fitted with the insertion slot of the charging socket;

[0031] At least a part of the cabin body of the plug body is disposed in the mounting hole and is axially movable along the housing, and one end face of the cabin body close to the coupling end is set as the first surface;

[0032] One end of the handheld part is rotatably connected to the outer peripheral wall of the cabin body around a first rotation axis, so that the other end of the handheld part approaches or moves away from the coupling end on the outer side of the housing in the radial direction;

[0033] One end of the first fitting is rotatably connected to the middle part of the handheld part around a second rotation axis, and the other end of the first fitting is rotatably connected to the outer peripheral wall of the housing around a third rotation axis. Any two of the first rotation axis, the second rotation axis, and the third rotation axis are parallel to each other, and the first rotation axis, the second rotation axis, and the third rotation axis are all perpendicular to the axial center line of the housing.

[0034] In one embodiment, the plug body includes at least two of the hand-held members and at least two first mating members, and the at least two hand-held members are evenly spaced along the circumferential direction of the cabin body;

[0035] The number of the first mating members is the same as and corresponds one-to-one to the number of the hand-held members.

[0036] In one embodiment, a guiding hole is axially formed in the outer peripheral wall of the outer shell along the axis of the outer shell, and the guiding hole communicates with the mounting hole;

[0037] A protruding portion is provided on the outer peripheral wall of the cabin body, and the protruding portion is slidably assembled in the guiding hole, and one end of the protruding portion away from the outer peripheral wall of the cabin body protrudes from the outer peripheral wall of the outer shell;

[0038] Wherein, one end of the hand-held member is rotatably connected to one end of the protruding portion away from the outer peripheral wall of the cabin body.

[0039] In one embodiment, the charging plug further includes:

[0040] A first locking member, which is provided on the outer peripheral wall of the outer shell and is movable between a first position and a second position;

[0041] When the first locking member is in the first position, the first locking member is adapted to cooperate with the protruding portion to limit the sliding of the protruding portion when the charging terminal is connected to the charging socket of the charging plug. When the first locking member is in the second position, the first locking member is separated from the protruding portion to allow the protruding portion to slide.

[0042] In one embodiment, a guiding groove is formed in the outer peripheral wall of the outer shell, the guiding groove communicates with the guiding hole, and the extending direction of the guiding groove intersects with the extending direction of the guiding hole;

[0043] Wherein, the first locking member is slidably assembled in the guiding groove along the extending direction of the guiding groove, so that the first locking member can slide between the first position and the second position;

[0044] The guiding groove penetrates through the guiding hole, so that both ends of the guiding groove are respectively located on both sides of the width direction of the guiding hole;

[0045] And the dimension of the first locking member in the width direction of the guiding hole is greater than the width dimension of the guiding hole.

[0046] In one embodiment, the radial cross-sectional shape of the outer shell is circular;

[0047] The engaging end is configured to be rotatable between a third position and a fourth position about the axial center line of the housing. In the third position, the engaging end is separable from the insertion slot in the depth direction of the insertion slot. In the fourth position, the engaging end is locked with the insertion slot in the depth direction.

[0048] The charging plug further includes a second locking structure disposed on the outer peripheral wall of the housing. The second locking structure is adapted to lock the engaging end with the insertion slot in the depth direction of the insertion slot when the engaging end is in the fourth position.

[0049] In one embodiment, the charging socket is provided with a locking hole.

[0050] The second locking structure includes a flexible connecting member and a bolt. The bolt is suspended from the outer peripheral wall of the housing through the flexible connecting member, and the bolt can extend into or out of the locking hole.

[0051] In one embodiment, the charging socket has a first identifier, and the outer peripheral wall of the housing has a second identifier.

[0052] Wherein, when the engaging end is in the fourth position, the first identifier is aligned with the second identifier.

[0053] In addition, the present invention further provides a charging gun, which includes a charging cable and the above-mentioned charging plug, and the charging cable is connected to the housing of the charging plug.

[0054] In addition, the present invention further provides a charging assembly, which includes a charging socket; and the above-mentioned charging plug, and the charging plug is detachably engaged with the charging socket.

[0055] The charging plug provided by the technical solution of the present invention enables the fluid flow through cavity defined by the plug body to communicate with the fluid channel and the fluid interface respectively, so as to be able to access the heat exchange fluid from the cooling source and perform thermal management on the external device through the cooling circuit of the external device, and charge the external device through the charging terminal; along the first direction on the first surface, the axis of at least one of the fluid interfaces is located between the axes of the two charging terminals, which is beneficial to making the charging terminals with relatively small cross-sectional areas make more full use of the space outside the arrangement direction of the fluid interfaces with relatively large cross-sectional areas, beneficial to making the layout between the charging terminals and the fluid interfaces integrated on the charging plug more compact, and beneficial to reducing the overall occupied volume of the interface between the plug body and the external device. Description of the Drawings

[0056] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on the structures shown in these drawings.

[0057] Figure 1 Schematic diagram of the structure of an embodiment of the charging plug provided by the present invention;

[0058] Figure 2 Explosion diagram of an embodiment of the charging plug provided by the present invention;

[0059] Figure 3 Schematic diagram of the operation of an embodiment of the charging plug provided by the present invention;

[0060] Figure 4 Another schematic diagram of the operation of an embodiment of the charging plug provided by the present invention;

[0061] Figure 5 Schematic diagram of the operation of an embodiment of the charging plug provided by the present invention; wherein, the first locking member is in the first position;

[0062] Figure 6 Schematic diagram of the guide groove and guide hole of an embodiment of the charging plug provided by the present invention;

[0063] Figure 7 For Figure 6 Enlarged schematic diagram of part A in

[0064] Figure 8 Schematic diagram of the operation of an embodiment of the charging plug provided by the present invention; wherein, the first locking member is in the second position;

[0065] Figure 9 Schematic diagram of the notch of the insertion slot of the charging socket that mates with the charging plug provided by the present invention;

[0066] Figure 10 Schematic diagram of the first receiving groove and the second receiving groove of the charging socket;

[0067] Figure 11 Axial sectional schematic diagram of an embodiment of the charging plug provided by the present invention;

[0068] Figure 12 Schematic diagram of the end face terminal distribution of an embodiment of the charging plug provided by the present invention;

[0069] Figure 13Schematic diagram of a radial cross-section of an embodiment of the charging plug provided by the present utility model.

[0070] Description of the reference numerals in the drawings:

[0071] 10. Plug-in slot; 11. First accommodation groove; 12. Second accommodation groove; 13. First identifier; 100. Housing; 101. Mounting hole; 102. Guide hole; 103. Guide groove; 1031. First groove section; 1032. Second groove section; 110. Combining end; 120. Step portion; 200. Cabin body; 210. Protruding portion; 220. Charging terminal; 230a. First fluid inlet; 230b. Second fluid inlet; 230c. First fluid outlet; 230d. Second fluid outlet; 224. Grounding terminal; 225a. Positive terminal of low-voltage auxiliary power supply; 225b. Negative terminal of low-voltage auxiliary power supply; 221a. Positive terminal of high-voltage direct current; 221b. Negative terminal of high-voltage direct current; 222a. First communication terminal; 222b. Second communication terminal; 223a. First charging connection terminal; 223b. Second charging connection terminal; 226a. First emergency power supply communication terminal; 226b. Second emergency power supply communication terminal; 227a. Positive terminal of emergency power supply; 227b. Negative terminal of emergency power supply; 228. Emergency power supply grounding terminal; 230. Fluid interface; 240. Liquid inlet cooling cavity; 250. Liquid outlet cooling cavity; 260. Drying cavity; 270. Liquid inlet pipe; 280. Liquid outlet pipe; 300. Handheld part; 400. First fitting; 500. Second fitting; 510. Fixed end; 520. Connection section; 530. Free end; 600. First locking part; 610. Sliding part, 620. Handle part.

[0072] The realization, functional features and advantages of the purpose of the present utility model will be further described with reference to the embodiments and the accompanying drawings. Specific embodiments

[0073] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without making creative efforts shall fall within the protection scope of the present utility model.

[0074] It should be noted that if there are directional indications (such as up, down, left, right, front, back...) in the embodiments of the present utility model, the directional indications are only used to explain the relative positional relationship and movement conditions between components in a specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0075] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of the features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or solutions that satisfy both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the utility model.

[0076] New energy vehicles, eVTOL (Electric Vertical Takeoff and Landing), new energy ships and other electric vehicles that use electricity as the main power are equipped with a charging socket that cooperates with a charging plug. When the charging plug and the charging socket are matched, the multiple charging terminals on the charging plug are respectively matched with the corresponding sockets on the charging socket.

[0077] In addition, when an electric vehicle is undergoing ground maintenance, it is sometimes necessary to adjust the temperature of the battery cells of the power battery pack to a specified temperature; for example, after connecting the ground thermal management system to the electric vehicle through a thermal management interface assembly, coolant or other heat exchange fluid is transported to the cooling circuit corresponding to the power battery pack of the electric vehicle, thereby performing active thermal management.

[0078] Therefore, the related art needs to connect the electric vehicle through the terminals on the charging plug and the interface components connected to the cooling circuit. The interfaces connected to the electric vehicle and other external devices are numerous and the overall volume is large.

[0079] Therefore, the present invention proposes a solution to reduce the overall occupied volume of the interface connected to the external device. The technical concept of the present invention is further described below in conjunction with some specific embodiments.

[0080] See also Figures 1 to 8, the present utility model provides a charging plug, which includes a plug body. The plug body includes a housing 100, a cabin 200, a hand-held part 300, and a first fitting 400. Among them, the cabin 200 can be set to be sleeved inside the housing 100 and the cabin 200 can move axially along the housing 100. In addition, through the transmission cooperation between the hand-held part 300 and the first fitting 400 (specific analysis is shown later), the cabin 200 can be moved axially along the housing 100, so that the cabin 200 can be moved to be inserted into the insertion slot of a charging socket of an external device such as an electric vehicle, and the cabin 200 can be separated from the insertion slot of the charging socket.

[0081] Of course, the plug body may not include the above-mentioned housing 100, hand-held part 300, and first fitting 400. For example, the connection between the charging terminals on the cabin 200 and the interface components connecting the cooling circuit and the external device can be achieved by the operator holding the cabin 200. This embodiment does not limit this.

[0082] Among them, at least two charging terminals 220 and at least two fluid interfaces 230 are provided on the first surface of the plug body (reference can be made to Figure 11 ), and the first surface can be provided at the end of the above-mentioned cabin 200. For example, the first surface is provided at Figure 11 the upper end of the middle cabin 200. One end of the plug body corresponding to the first surface is adapted to be detachably fitted with the insertion slot of the charging socket. For example, Figure 1 and Figure 2 in, the upper end of the plug body is adapted to be detachably fitted with the insertion slot of the charging socket, for example, through the above-mentioned transmission cooperation between the hand-held part 300 and the first fitting 400 (specific analysis is shown later).

[0083] In addition, the plug body also defines a fluid passage and a fluid flow cavity. Refer to Figure 11, it can define the above-mentioned fluid flow cavity inside the cabin body 200, and the fluid flow cavity can further include an inlet liquid cooling cavity 240 and an outlet liquid cooling cavity 250; in addition, an inlet liquid pipe 270 and an outlet liquid pipe 280 can be arranged on the second surface of the cabin body 200. Both the inlet liquid pipe 270 and the outlet liquid pipe 280 are suitable for the insulating heat exchange fluid to flow through. The inlet liquid pipe 270 and the outlet liquid pipe 280 are respectively connected to the fluid flow cavity. The above-mentioned fluid channel includes the inlet liquid pipe 270 and the outlet liquid pipe 280. The fluid channel is used to connect to a cooling source, so as to access the heat exchange fluid such as the insulating heat exchange fluid from the cooling source. In addition, the fluid flow cavity (for example, it can include the above-mentioned inlet liquid cooling cavity 240 and outlet liquid cooling cavity 250) is respectively connected to the fluid channel (for example, it can include the above-mentioned inlet liquid pipe 270 and outlet liquid pipe 280) and the fluid interface 230. The fluid flow cavity is used for the heat exchange fluid from the cooling source to flow through, and the fluid interface is used to connect to the cooling circuit of the external device, so that the heat exchange fluid from the cooling source can be accessed to perform thermal management on the external device through the cooling circuit of the external device, and the external device can be charged through the charging terminal 220.

[0084] Refer to Figure 12 , wherein the charging terminal 220 can include Figure 12 the grounding terminal 224, the positive terminal 225a of the low-voltage auxiliary power supply, the negative terminal 225b of the low-voltage auxiliary power supply, and the positive terminal 221a of the high-voltage direct current located on the left side in Figure 12 the negative terminal 221b of the high-voltage direct current, the first communication terminal 222a, the second communication terminal 222b, the first charging connection terminal 223a, the second charging connection terminal 223b located on the right side in Figure 12 the positive terminal 227a of the emergency power supply, the negative terminal 227b of the emergency power supply, the first emergency power supply communication terminal 226a, the second emergency power supply communication terminal 226b, and the emergency power supply grounding terminal 228 located in the middle in

[0085] Refer to Figure 11 and Figure 12 , the first surface can be set as the surface where the plug body is plugged and matched with the charging socket of the external device, for example, set as the surface where the above-mentioned cabin body 200 is plugged and matched with the charging socket; refer to Figure 11 , the first surface can be set as the upper end surface of the cabin body 200. In addition, along the first direction, the axis of at least one fluid interface 230 is located between the axes of the two charging terminals 220, and the first direction is located on the first surface. For example, in Figure 12Among them, along the first direction, the axes of the first fluid input port 230a, the second fluid input port 230b, the first fluid output port 230c, and the second fluid output port 230d of the fluid interface 230 are respectively located between the high-voltage DC positive terminal 221a and the high-voltage DC negative terminal 221b. Of course, they can also be respectively located Figure 12 among the axes of the grounding terminal 224, the low-voltage auxiliary power positive terminal 225a, the low-voltage auxiliary power negative terminal 225b, and the high-voltage DC positive terminal 221a, which are located on the left side in Figure 12 and the axis of one of the high-voltage DC negative terminal 221b, the first communication terminal 222a, the second communication terminal 222b, the first charging connection terminal 223a, and the second charging connection terminal 223b, which are located on the right side in. This embodiment does not limit this.

[0086] Referring to Figure 12 , along the first direction, the axis of at least one fluid interface 230 is located between the axes of the two charging terminals 220, which is beneficial to making the charging terminals 220 with a relatively small cross-sectional area make more full use of the space outside in the arrangement direction of the fluid interface 230 with a relatively large cross-sectional area, beneficial to making the layout between the charging terminals 220 and the fluid interface 230 integrated on the charging plug more compact, and beneficial to reducing the overall occupied volume of the interface for the plug body to connect with external devices.

[0087] In an embodiment, continue to refer to Figure 12 , along the first direction, at least one row of fluid interfaces 230 is provided on the first surface, and each row of fluid interfaces 230 is provided with spaced fluid interfaces 230 in the second direction. The second direction is parallel to the first surface and intersects the first direction. For example, the second direction can be perpendicular to the first direction. Among them, referring to Figure 12 , the fluid interfaces 230 in the first row include the first fluid input port 230a and the second fluid input port 230b, and the fluid interfaces 230 in the second row include the first fluid output port 230c and the second fluid output port 230d. Among them, along the first direction, at least part of the charging terminals are arranged between the edge of the first surface and all the fluid interfaces 230, so as to be beneficial to making the layout between the charging terminals 220 and the fluid interfaces 230 more compact, and more beneficial to reducing the overall occupied volume of the interface for the plug body to connect with external devices. For example, Figure 12 the low-voltage auxiliary power positive terminal 225a, which is located on the left side in, is arranged between the left edge of the first surface and all the fluid interfaces 230 (the first fluid input port 230a, the second fluid input port 230b, the first fluid output port 230c, and the second fluid output port 230d); for another example, Figure 12The negative terminal 225b of the low-voltage auxiliary power supply, which is located on the right side, is arranged between the right edge of the first surface and all fluid interfaces (the first fluid inlet 230a, the second fluid inlet 230b, the first fluid outlet 230c, and the second fluid outlet 230d).

[0088] In one embodiment, referring to Figure 12 , along the first direction, at least two rows of fluid interfaces 230 are provided on the first surface. The at least two rows of fluid interfaces 230 include four arranged around the central region of the first surface; on the first surface, for the four fluid interfaces 230 arranged around the central region of the first surface, the centers of the respective fluid interfaces 230 form a virtual quadrilateral as endpoints (referring to the dashed rectangle in Figure 12 ). At least part of the charging terminals 220 are arranged outside the virtual quadrilateral. For example, Figure 12 the positive terminal 225a of the low-voltage auxiliary power supply located on the left side and Figure 12 the negative terminal 225b of the low-voltage auxiliary power supply located on the right side in

[0089] In one embodiment, referring to Figure 12 are respectively located outside the virtual quadrilateral, which is beneficial to making the layout between the charging terminals 220 and the fluid interfaces 230 more compact and more beneficial to reducing the overall occupied volume of the interface where the plug body is connected to an external device.

[0090] Please refer to Figure 11 , in one embodiment, the plug body further includes at least two wire harnesses. Among them, the above-mentioned liquid inlet cooling cavity 240 and the liquid outlet cooling cavity 250 can be respectively arranged on the central axis of the cabin body 200. For example, the liquid inlet cooling cavity 240 and the liquid outlet cooling cavity 250 can be symmetrically arranged left and right with respect to the central axis of the cabin body 200. A part of all the fluid interfaces 230 is communicated with the liquid inlet pipe 270 through the liquid inlet cooling cavity 240, and another part of all the fluid interfaces 230 is communicated with the liquid outlet pipe 280 through the liquid outlet cooling cavity 250, thereby improving the flow orderliness of the heat exchange fluid through the liquid inlet cooling cavity 240 and the liquid outlet cooling cavity 250. Among them, a part of all the charging terminals 220 can penetrate through the liquid inlet cooling cavity 240 to be connected with the corresponding wire harness, or extend into the liquid inlet cooling cavity 240 to be connected with the corresponding wire harness; another part of all the charging terminals 220 penetrate through the liquid outlet cooling cavity 250 to be connected with the corresponding wire harness, or extend into the liquid outlet cooling cavity 250 to be connected with the corresponding wire harness.

[0091] Specifically, the cabin 200 includes a tail portion connected to the cable, and a head portion provided with charging terminals 220 and fluid interfaces 230. The pin ends of the respective charging terminals 220 are exposed from the head portion, and the other ends extend towards the tail portion to be connected to corresponding wire harnesses in the circuit structure within the cabin 200. It can be understood that the charging terminals 220 can be connected to the wires in the wire harness for power transmission, or can be connected to the communication lines in the wire harness for information transmission.

[0092] Inside the tail portion of the cabin 200, there is a liquid inlet pipe 270 for the heat exchange fluid inside the cable to enter the cabin 200, and a liquid outlet pipe 280 is provided for the heat exchange fluid inside the cabin 200 to enter the cable. It can be understood that the liquid inlet pipe 270 and the liquid outlet pipe 280 can be pipe fittings buried inside the cabin 200, or can also be channels defined when injection molding or using other processes to form inside the cabin 200. This embodiment does not limit this.

[0093] Inside the cabin 200, a liquid inlet cooling cavity 240 and a liquid outlet cooling cavity 250 are provided, and the liquid inlet cooling cavity 240 and the liquid outlet cooling cavity 250 are symmetrically arranged about the central axis of the cabin 200, which improves the space utilization rate, and one end of the liquid inlet cooling cavity 240 is connected to the fluid interface 230 corresponding to the liquid inlet among all the fluid interfaces 230, and the other end is connected to the liquid inlet pipe 270. And one end of the liquid outlet cooling cavity 250 is connected to the fluid interface 230 corresponding to the liquid outlet pipe 280 among all the fluid interfaces 230, and the other end is connected to the liquid outlet pipe 280. In this way, heat exchange fluids such as the insulating heat exchange fluid before entering the eVTOL first stay temporarily in the liquid outlet cooling cavity 250, and the insulating heat exchange fluid after leaving the eVTOL stays temporarily in the liquid inlet cooling cavity 240 after entering from the fluid interface 230. It can be understood that the heat exchange fluid in the liquid outlet cooling cavity 250 is output relative to the charging plug, and the heat exchange fluid from an external device enters from the outside into the liquid inlet cooling cavity 240.

[0094] A part of the plurality of charging terminals 220 passes through the liquid inlet cooling cavity 240, and another part of the charging terminals 220 passes through the liquid outlet cooling cavity 250, so that each charging terminal 220 in the cabin 200 is directly in contact with the insulating heat exchange fluid during operation and is cooled. Or, the other ends of a part of the plurality of charging terminals 220 extend into the liquid inlet cooling cavity 240 to be connected to the corresponding wire harnesses, and the other ends of another part of the charging terminals 220 extend into the liquid outlet cooling cavity 250 to be connected to the corresponding wire harnesses, so that each charging terminal 220 and the corresponding wire harnesses in the cabin 200 are all cooled by the insulating heat exchange fluid.

[0095] In addition, since the voltage of the high-voltage DC terminal for charging the power battery of an external device such as an electric vehicle is relatively high, the heat generation is also relatively large. Therefore, in some embodiments, with reference toFigure 11 and Figure 12 , a part of the high-voltage DC terminals (such as Figure 12 the high-voltage DC positive terminal 221a in Figure 12 ) penetrate into the liquid inlet cooling chamber 240 and are connected to the corresponding wire harnesses, or extend into the liquid inlet cooling chamber 240 and are connected to the corresponding wire harnesses; another part of the high-voltage DC terminals (such as

[0096] the high-voltage DC negative terminal 221b in

[0097] ) penetrate into the liquid outlet cooling chamber 250 and are connected to the corresponding wire harnesses, or extend into the liquid outlet cooling chamber 250 and are connected to the corresponding wire harnesses, thereby improving the heat dissipation efficiency by efficiently cooling the high-voltage DC terminals.

[0098] It is worth mentioning that the heat exchange fluid such as the insulating heat exchange fluid in this embodiment can be provided by the thermal management equipment in electric vehicles such as eVTOL, or can also be provided by the ground thermal management equipment. This embodiment does not limit this. When the insulating heat exchange fluid is provided by the ground thermal management system, the ground thermal management system provides an external circulation cooling function for electric vehicles such as eVTOL. Since the heat generated by most electric vehicles during discharge is less than the heat generated during fast charging (especially fast charging within 30 minutes), their own thermal management equipment can only be responsible for the heat dissipation function during discharge. Therefore, its design power can be smaller, and its volume and weight can also be smaller.

[0099] It is not difficult to see that during the charging process, the charging terminals 220 of the cabin 200 and even the wire harnesses are immersed-cooled by the insulating heat exchange fluid. Therefore, this embodiment also provides a cooling measure for the key components of the charging plug during the eVTOL charging process, so as to significantly improve the heat generation phenomenon of the cabin 200 during the eVTOL charging process. In this way, through the cooling solution provided by this embodiment, the charging plug can support a higher charging power ratio and reduce the charging time, that is, it can support a faster fast charging technology.

[0100] Understandably, for electric vehicles such as eVTOLs, their fuselages not only include a main power source but also an emergency low-voltage power source. Generally, the emergency low-voltage power source is a 28V low-voltage emergency battery, so that in the event of the failure of the main power source of the eVTOL, the emergency low-voltage power source can quickly take over and provide necessary power support for the key systems of the eVTOL (such as the flight control system, navigation system, communication system, etc.), ensuring that the eVTOL can land safely and stably. Generally, when the emergency power source has not been used for a long time, a charge and discharge cycle should also be carried out every once in a while (such as every three months) to maintain the battery activity and extend the service life. In related technologies, the emergency low-voltage power source is usually charged by a power battery with a relatively high voltage in the electric vehicle; however, the power battery may have too low a power level, fail, or the charging line between the two may be damaged, which may result in the failure of charging the emergency low-voltage power source. Therefore, in one embodiment, the plurality of charging terminals 220 include at least two low-voltage emergency power source terminals and at least two high-voltage DC terminals. Of course, correspondingly, the charging socket also has corresponding low-voltage emergency charging sockets, and the low-voltage emergency charging sockets cooperate with the low-voltage emergency power source terminals to establish a charging channel for the emergency low-voltage power source.

[0101] In this way, after the charging plug provided in this embodiment is connected to the charging socket, it can not only charge the main power source but also charge the emergency low-voltage power source, expanding the function of the charging plug to reduce the steps during the ground maintenance of the eVTOL. Of course, understandably, when the charging plug cooperates with the charging socket, whether the low-voltage emergency power source terminal group operates can be controlled by the maintenance personnel according to the maintenance task.

[0102] The low-voltage emergency power source terminal can be cooled through the insulating heat exchange solid in the liquid inlet cooling cavity 240 or the liquid outlet cooling cavity 250 during charging. Or, since the power loss of the low-voltage emergency power source terminal and the corresponding low-voltage power source charging wire harness for charging the emergency low-voltage power source is small and does not generate much heat, in one embodiment, referring to Figure 11 , a drying cavity 260 is defined in the cabin 200. The drying cavity 260, the liquid inlet cooling cavity 240, and the liquid outlet cooling cavity 250 are arranged side by side, and the drying cavity 260 is independent of the liquid inlet cooling cavity 240 and the liquid outlet cooling cavity 250 respectively; the low-voltage emergency power source terminal penetrates through the drying cavity 260 and is connected to the corresponding low-voltage power source charging wire harness, or extends into the drying cavity 260 and is connected to the corresponding low-voltage power source charging wire harness.

[0103] Specifically, in the radial cross-section of the cabin body 200, the three chambers of the drying chamber 260, the liquid inlet cooling chamber 240, and the liquid outlet cooling chamber 250 are arranged side by side. The drying chamber 260 is independent of the liquid inlet cooling chamber 240 and the liquid outlet cooling chamber 250, and the inside thereof is filled with air or insulating gas to form a dry cavity. Each low-voltage emergency power supply terminal penetrates through the dry cavity and is connected to the corresponding low-voltage power supply charging wire harness, or extends into the drying chamber 260 and is connected to the corresponding low-voltage power supply charging wire harness.

[0104] In this way, in this embodiment, the charging terminals 220 and / or wire harnesses that need to be cooled, and the low-voltage charging terminals 220 and / or low-voltage power supply charging wire harnesses that do not require cooling measures are isolated from dry and wet, improving the safety of the charging plug.

[0105] It can be understood that in the radial cross-section of the cabin body 200, the specific layout of the three chambers of the drying chamber 260, the liquid inlet cooling chamber 240, and the liquid outlet cooling chamber 250 can be determined according to the specific layout of each charging terminal 220 on the end face of the cabin body 200 close to the joint end 110. For example, please refer to Figure 12 , in one embodiment, in the radial cross-section of the cabin body 200, the drying chamber 260 is located at the geometric center of the cabin body 200, and the liquid inlet cooling chamber 240 and the liquid outlet cooling chamber 250 are respectively located on both sides of the drying chamber 260; the liquid inlet cooling chamber 240 and the liquid outlet cooling chamber 250 can be set to be independently arranged, which can be understood as the heat exchange fluids in the liquid inlet cooling chamber 240 and the liquid outlet cooling chamber 250 are separated; the first surface of the cabin body 200 has a first area facing the liquid inlet cooling chamber 240, a second area facing the liquid outlet cooling chamber 250, and a third area corresponding to the drying chamber 260, wherein the above first direction is parallel to the direction from the first area to the second area, and the third area is located within the above virtual quadrilateral; referring to Figure 11 and Figure 12 , the first fluid input port 230a and the first fluid output port 230c among the plurality of fluid interfaces 230 are arranged in the first area and are respectively communicated with the liquid inlet cooling chamber 240, and are spaced apart from each other along the second direction; the first fluid output port 230c and the second fluid output port 230d among the plurality of fluid interfaces 230 are arranged in the second area and are respectively communicated with the liquid outlet cooling chamber 250, and are spaced apart along the second direction; and, the first fluid input port 230a and the first fluid output port 230c are oppositely arranged and spaced apart from each other in the first direction, and the second fluid input port 230b and the second fluid output port 230d are oppositely arranged and spaced apart from each other in the first direction.

[0106] Among them, the ground terminal 224, the positive terminal 225a of the low-voltage auxiliary power supply, the negative terminal 225b of the low-voltage auxiliary power supply, and the positive terminal 221a of the high-voltage direct current are all arranged in the first area and are spaced apart from each other. In the second direction, the ground terminal 224, the positive terminal 225a of the low-voltage auxiliary power supply, the negative terminal 225b of the low-voltage auxiliary power supply, and the positive terminal 221a of the high-voltage direct current are located between the first fluid inlet 230a and the second fluid inlet 230b; the negative terminal 221b of the high-voltage direct current, the first communication terminal 222a, the second communication terminal 222b, the first charging connection terminal 223a, and the second charging connection terminal 223b among the multiple charging terminals are all arranged in the second area and are spaced apart from each other; in the second direction, the negative terminal 221b of the high-voltage direct current, the first communication terminal 222a, the second communication terminal 222b, the first charging connection terminal 223a, and the second charging connection terminal 223b are located between the first fluid outlet 230c and the second fluid outlet 230d. The positive emergency power terminal 227a, the negative emergency power terminal 227b, the first emergency power communication terminal 226a, the second emergency power communication terminal 226b, and the emergency power ground terminal 228 among the multiple low-voltage emergency power terminals are all arranged in the third area and are spaced apart from each other. It is not difficult to see that the present embodiment provides a relatively compact layout method.

[0107] In addition, in order to make full use of the internal space of the cabin 200, please refer to Figure 13 , in an embodiment, in a cross-section parallel to the above-mentioned first plane, for example, in a radial cross-section of the cabin 200, the shape of the drying chamber 260 is circular or elliptical, and the shapes of the side of the liquid inlet cooling chamber 240 facing away from the drying chamber and the side of the liquid outlet cooling chamber 250 facing away from the drying chamber are both arc-shaped, such as semi-circular ring-shaped or semi-elliptical.

[0108] Taking eVTOL as an example, the plugging and unplugging process of a common high-voltage direct current charging gun needs to overcome a large frictional force between the charging gun (charging plug) and the charging socket. For example, when ensuring that personnel push the charging gun vigorously, the entire thrust will be directly transmitted to the fuselage or wing of the eVTOL, and the eVTOL as a whole is prone to shaking, which will cause irreversible damage to the structural stability of the eVTOL in the long run.

[0109] Therefore, in some embodiments of the present utility model, a crank-slider mechanism is used to push the cabin to move within the outer shell until the cabin is plugged in place, thereby reducing the force required by the ensuring personnel, and further reducing the overall shaking of the electric vehicle during the plugging of the charging plug, and improving the structural stability of the electric vehicle.

[0110] Wherein, the plug body further includes a handheld member 300 and a first fitting member 400. The housing 100 has a mounting hole 101 that penetrates the housing 100 along the axial direction of the housing 100, and one axial end of the housing 100 is a mating end 110, and the mating end 110 is adapted to be detachably mated with the insertion slot of the charging socket; at least part of the cabin body 200 is disposed in the mounting hole 101 and is axially movable along the housing 100, and one end face of the cabin body 200 close to the mating end 110 is set as the first surface, so that a plurality of charging terminals 220 can be provided; one end of the handheld member 300 is rotatably connected to the outer peripheral wall of the cabin body 200 around a first rotation axis, so that the other end of the handheld member 300 approaches or moves away from the mating end 110 on the radially outer side of the housing 100; one end of the first fitting member 400 is rotatably connected to the middle of the handheld member 300 around a second rotation axis, and the other end of the first fitting member 400 is rotatably connected to the outer peripheral wall of the housing 100 around a third rotation axis. Any two of the first rotation axis, the second rotation axis and the third rotation axis are parallel to each other, and the first rotation axis, the second rotation axis and the third rotation axis are all perpendicular to the axial center line of the housing 100.

[0111] Specifically, the charging plug and the charging socket are electronic components for connecting a power source and a charging device. The charging plug is used to provide charging terminals 220 such as metal pins, while the charging socket is installed on a wall or other devices (electric vehicles) and is used to connect the charging plug. The charging socket provides an insertion slot 10 that matches the charging plug (see Figure 9 ), and the insertion slot 10 is provided with a socket. After the charging plug is inserted into the insertion slot 10, the charging terminals 220 are inserted into the plug to connect the power source, so as to supply power to the charging device. In this embodiment, the charging socket is installed on the fuselage of the eVTOL, and it is generally vertically downward or arranged at 45°, so as to facilitate ensuring the operation of personnel.

[0112] The housing 100 is the outer sleeve part of the charging plug and has an axial structure. An installation hole 101 extending along the axial direction of the housing 100 and penetrating both axial ends of the housing 100 is defined inside the housing 100. It can be understood that the outer contour of the radial cross-section of the housing 100 can be circular, so that the housing 100 is constructed as a circular tube with both ends open. Or, the outer contour of the radial cross-section of the housing 100 can also be a polygon such as a rectangle, and this embodiment does not limit this. One axial end of the housing 100 is a mating end 110, and the mating end 110 is adapted to be inserted into the insertion slot of the charging socket and is detachably mated with the insertion slot 10 of the charging socket, so as to fix the whole housing 100 in the insertion slot 10.

[0113] It is worth mentioning that, for the convenience of understanding, the following will be described with the direction close to the charging socket in the axial direction of the housing 100 as the front and the direction away from the charging socket as the rear.

[0114] The cabin body 200 is a shell structure, and its material should meet the requirements of insulation performance, flame retardancy, weather resistance, low temperature toughness, etc. For example, one or more of PC (polycarbonate), ABS (acrylonitrile-butadiene-styrene copolymer), and PBT (polycarbonate / polybutylene terephthalate) can be used. The main cross-sectional contour of the cabin body 200 is the same as the cross-sectional shape of the mounting hole 101, so that the shell structure can be inserted into the mounting hole 101 and can slide in the mounting hole 101. Of course, the cabin body 200 can also be constructed as a variable diameter structure, and the cross-sectional contour of a part of it is the same as the cross-sectional shape of the mounting hole 101, so that the shell structure can be inserted into the mounting hole 101 and can slide in the mounting hole 101; the diameter of another part of the shell of the cabin body 200 is relatively small, so as to facilitate the sliding of a part of the shell of the cabin body 200 in the mounting hole 101; of course, the diameter of another part of the shell of the cabin body 200 can also be set to be relatively large, so as to facilitate the limiting of a part of the shell of the cabin body 200 that slides in the mounting hole 101. In addition, a cable connected to the charging cable, a circuit structure that converts the electric energy transmitted by the cable into the electric energy required by the device, a charging terminal 220 that is connected to the wire harness of the circuit structure and is inserted and matched with the charging socket of the charging socket, etc. are arranged in the shell structure.

[0115] In this embodiment, both ends of the mounting hole 101 are open, so that all or part of the cabin body 200 can be assembled in the mounting hole 101, and one end face of the cabin body 200 close to the joint end 110, that is, the front end face, can be matched with the socket of the charging socket through the opening on the side of the mounting hole 101 close to the joint end 110; or, an opening is provided on the side of the mounting hole 101 away from the joint end 110 so that one end of the cabin body 200 away from the joint end 110, that is, the rear end, can extend outside the outer shell 100. Of course, the opening on the side of the mounting hole 101 away from the joint end 110 can also be used for the cable to extend. The cabin body 200 can move along the axial direction of the outer shell 100 in the mounting hole 101, so that the cabin body 200 can move close to the joint end 110, so that the charging terminal 220 on the front end face of the cabin body 200 is connected and matched with the charging socket in the socket, or the cabin body 200 can also move away from the joint end 110, so that the charging terminal 220 and the charging socket are separated.

[0116] A hinge seat is formed by protruding a part of the outer peripheral wall of the cabin body 200, and the main body of the handheld part 300 is a rod, and one end of it is a hinge end; in addition, the other end of the handheld part 300 extends to the radial outside of the outer shell 100 to form a holding end. The hinge seat is matched with the hinge end so that the handheld part 300 and the outer peripheral wall of the cabin body 200 are pivotally connected. In one example, the hinge end is constructed as a fork-shaped structure. And the holding end can be constructed as a grip rod structure, or can be constructed as a T-shaped structure, or can also be constructed as a ring-shaped structure, so as to facilitate the personnel to hold and exert force with the hand.

[0117] It is worth mentioning that the first rotation axis between the hinge seat and the hinge end lies in a radial plane of the housing 100 and is perpendicular to the axial center line of the housing 100. Thus, when the handheld part 300 rotates around the hinge seat, the gripping end of the handheld part 300 can move away from or close to the joint end 110 of the housing 100 on the radial outside of the housing 100.

[0118] The outer peripheral wall of the housing 100 is hinged to one end of the first fitting 400, and the other end of the first fitting 400 is hinged to the middle of the handheld part 300. Any two of the third rotation axis between the housing 100 and the first fitting 400, the second rotation axis between the first fitting 400 and the handheld part 300, and the first rotation axis are parallel, and all three are perpendicular to the axial center line of the housing 100. In this way, the cabin 200 and the housing 100 form a sliding pair, and the handheld part 300, the first fitting 400 and the housing 100 are all connected by rotating pairs. Thus, the housing 100, the cabin 200, the handheld part 300, and the first fitting 400 together form a planar crank-slider mechanism.

[0119] When using the charging plug provided in this embodiment, the operator can hold the housing 100 with both hands, or through the handheld part 300, insert the front end of the charging plug as a whole into the insertion slot 10 of the charging socket, and make the joint end 110 cooperate with the insertion slot 10 to fasten the housing 100 to the charging socket. Of course, at this time, the charging terminal 220 of the cabin 200 is not connected to the charging socket of the charging plug. Then, the operator rotates the handheld part 300 in a direction away from the joint end 110, forcing the cabin 200 to move forward in the housing 100 from the back until the charging terminal 220 is inserted into the charging socket and locked. Of course, when pulling out the charging plug, the operator can first rotate the handheld part 300 in the reverse direction to separate the cabin 200 from each charging socket, and then remove the housing 100.

[0120] It is not difficult to see that in the related art, when the operator directly and strongly pushes the charging plug into the charging socket or pulls the charging plug out of the charging socket forcefully, it will cause the overall vibration of the fuselage of the eVTOL. In this embodiment, the operator applies force to rotate the handheld part 300, and the planar crank-slider mechanism converts this rotational motion into the sliding of the cabin 200 in the housing 100. Thus, the lever characteristics of the planar crank-slider mechanism itself are utilized, greatly reducing the force applied by the operator, and further reducing the force transmitted to the fuselage, so as to reduce the overall shaking of electric vehicles such as eVTOL when the charging plug is inserted, thereby improving the structural stability of the electric vehicle.

[0121] Understandably, one or more sets of planar crank-slider mechanisms can be provided on the charging plug to further save effort and significantly reduce the deformation effect on the coaxiality between the cabin body 200 and the mounting hole 101 during the operation of a single set of planar crank-slider mechanisms. Please refer to Figures 1 to 8 , in one embodiment, the plug body includes at least two hand-held members 300 and at least two first mating members 400. The at least two hand-held members 300 are evenly spaced along the circumferential direction of the cabin body 200; the number of the first mating members 400 is the same as that of the hand-held members 300 and they correspond to each other one by one.

[0122] Thus, a plurality of hand-held members 300 are also provided on the outer peripheral wall of the cabin body 200. Each hand-held member 300 is rotatably connected to a first mating member 400, and they are arranged corresponding to each other one by one. A corresponding set of second mating members 500 and first mating members 400 are mated through the first mating member 400. In one example, the number of the hand-held members 300 can be set to 2, that is, the 2 hand-held members 300 are symmetrically arranged about the axial center line of the outer shell 100.

[0123] It is not difficult to see that in this embodiment, multiple sets of planar crank-slider mechanisms are formed by a plurality of first mating members 400 and hand-held members 300, so as to balance the forces exerted on the cabin body 200 by the multiple hand-held members 300, reduce the shaft-hole deformation between the cabin body 200 and the mounting hole 101, and further improve the service life of the charging plug.

[0124] Please refer to Figure 2 , the rotational mating between the first mating member 400 and the outer shell 100 can be specifically realized through the second mating member 500. The second mating member 500 included in the plug body is fixedly arranged on the outer peripheral wall of the outer shell 100, such as can be configured as a hinge seat protruding from the outer peripheral wall of the outer shell 100, and the first mating member 400 can be configured as a connecting rod with hinge holes at both ends. Of course, for the convenience of force transmission, the second mating member 500 is arranged close to the joint end 110.

[0125] However, in this structure, the hand-held member 300 and the first mating member 400 always protrude from the outer peripheral wall of the outer shell 100, which not only affects the appearance of the charging plug, but also causes the radial dimension of the outer shell to be too large, resulting in a significant increase in the volume of the charging plug and affecting the placement of the charging plug. Therefore, in one embodiment, the second mating member 500 and the first mating member 400 are detachably mated.

[0126] In this way, when it is necessary to plug or unplug the charging plug, the second mating piece 500 and the first mating piece 400 can be matched together, so that the other end of the first mating piece 400 can be rotated around the third rotation axis relative to the second mating piece 500, forming the aforementioned planar crank slider mechanism, and when it is not necessary to plug or unplug the charging plug, the second mating piece 500 and the first mating piece 400 can be separated. At this time, the handpiece 300 and the first mating piece 400 are tightly attached to the outer wall of the housing 100 under the action of gravity, thereby roughly approaching the appearance size / volume of the existing charging plug.

[0127] In addition, since there are multiple handpieces 300, such as two, the support personnel can hold a handpiece 300 in each hand, then lift the charging plug and insert it into the charging socket, or two support personnel can hold a handpiece 300 respectively, and then cooperate to lift the charging plug and insert it into the charging socket, thereby facilitating user operation.

[0128] See also Figure 4 In addition, when the security personnel pushes the housing 100 into the insertion slot 10 through the handpiece 300, in order to ensure that the force applied by the security personnel is better transmitted to the housing 100, the other end of the first matching piece 400 is suitable for stopping at the side surface of the second matching piece 500 away from the coupling end 110. In this way, the handpiece 300, the first matching piece 400, and the second matching piece 500 (housing 100) form a stable frame structure to facilitate the transmission of force and facilitate the security personnel to push the housing 100 into the insertion slot 10.

[0129] In addition, during the process of the first mating piece 400 and the second mating piece 500 cooperating to push the housing 100 into the insertion slot 10, the hinge between the second mating piece 500 and the first mating piece 400 is a stress concentration location. If the other end of the first mating piece 400 is stopped against the side surface of the second mating piece 500 away from the coupling end 110, the stress of the structure can be improved and the service life can be increased.

[0130] Of course, in order to prevent the first mating piece 400 from falling off when it stops against the second mating piece 500, the other end of the first mating piece 400 is suitable for stopping at the connection between the side surface of the second mating piece 500 away from the coupling end 110 and the outer peripheral wall of the shell 100.

[0131] Specifically, the second mating piece 500 and the first mating piece 400 can be constructed as an axial-hole mating structure to achieve separable mating between the two, that is, the second mating piece 500 is provided with a hole, and the other end of the first mating piece 400 is constructed as an axial portion. When the second mating piece 500 and the first mating piece 400 are mated, the axial portion is inserted into the hole from the opening of the hole, so that the axial portion can rotate in the hole.

[0132] Alternatively, seeFigure 2 , in one embodiment, the second fitting 500 includes a fixed end 510 and a free end 530. The fixed end 510 is fixedly arranged on the outer peripheral wall of the housing 100, and the free end 530 extends in a suspended manner and bends towards the engaging end 110; wherein, the other end of the first fitting 400 is adapted to be hooked on the free end 530.

[0133] Specifically, the fixed end 510 of the second fitting 500 can be fixed on the outer peripheral wall of the housing 100 by fasteners such as screws, or by welding or other means. The fixed end 510 extends in the direction from the radially inner side to the radially outer side of the housing 100, and bends towards the engaging end 110 to form the free end 530. In this way, a second receiving groove 12 in the form of a C-shaped opening groove is formed at one end of the side wall of the second fitting 500 close to the engaging end 110 and away from the housing 100. The second receiving groove 12 opens forward, and the central axis of the second receiving groove 12 is parallel to the third rotation axis. Of course, the second fitting 500 can also be integrally formed with the housing 100.

[0134] The other end of the first fitting 400 is adapted to be hooked in the second receiving groove 12. In one example, the other end of the first fitting 400 bends and extends to form a hooking portion. Or, in another example, the other end of the first fitting 400 can be configured as an annular structure, and the annular structure can be a rectangular ring, a circular ring or an elliptical ring, etc.

[0135] It is not difficult to see that since the free end 530 of the second fitting 500 bends towards the engaging end 110, during the rotation of the first fitting 400 relative to the handheld part 300, the first fitting 400 can be smoothly hooked on or disengaged from the free end 530 of the second fitting 500, so that the housing 100 can be separated from the insertion slot 10 through the bent free end 530, that is, the cooperation between the second fitting 500 and the first fitting 400 is more convenient to ensure the operation of personnel.

[0136] Please refer to Figures 2 to 7 , in one embodiment, the second fitting 500 further includes a connecting section 520. The fixed end 510 and the free end 530 are connected by the connecting section 520, and in the direction from the fixed end 510 to the free end 530, the connecting section 520 extends obliquely in the direction away from the engaging end 110.

[0137] Specifically, in the direction from the radial inner side to the radial outer side of the housing 100, the second fitting member 500 first extends obliquely toward the rear end of the housing 100 for a certain length, and then bends and extends toward the direction of the coupling end 110. It can be seen that an angle region is formed between the rear side wall of the second fitting member 500 and the outer peripheral wall of the housing 100. When the first fitting member 400 abuts against the rear side wall of the first fitting member 400, it is clamped in the angle region to complete the radial limitation of the housing 100. In the angle region, the first fitting member 400 is more firmly supported, which can effectively prevent the first fitting member 400 from being separated from the second fitting member 500 during the abutment process.

[0138] In one embodiment, the charging plug also includes a first magnetic component, which is arranged at the connection between the side wall of the fixed end 510 facing away from the coupling end 110 and the outer peripheral wall of the shell 100; a second magnetic component is arranged at the other end of the first matching component 400 and the magnetism of the second magnetic component is different from that of the first magnetic component, or the material of the other end of the first matching component 400 is a magnetic metal material.

[0139] Specifically, the first magnetic component is a component made of magnetic material. It can be understood that the first magnetic component can be buried in the housing 100 or embedded in the outer peripheral wall of the housing 100.

[0140] Correspondingly, the second magnetic component can also be a component made of magnetic material, the difference is that the first magnetic component and the second magnetic component have different magnetic properties, so that they attract each other. The first magnetic component and the second magnetic component include but are not limited to magnets, magnets, and magnetic blocks. It can be understood that the second magnetic component can also be embedded or coated at the other end of the first matching component 400.

[0141] Alternatively, the material of the other end of the first matching component 400 is a magnetic metal material, specifically including a ferromagnetic metal material and / or a paramagnetic metal material.

[0142] It is not difficult to see that in this embodiment, through the cooperation between the first magnetic member and the second magnetic member, or the cooperation between the first magnetic member and the magnetic metal material, the other end of the first matching member 400 can be more firmly stopped at the connection between the second matching member 500 and the housing 100, and can prevent it from sliding at will. In this way, when the security personnel push the housing 100 into the plug-in slot 10, the thrust is transmitted more smoothly.

[0143] It should be noted that the relative position relationship between the handpiece 300 and the housing 100 can be that the rear end of the cabin 200 is exposed from the rear end opening of the mounting hole 101, and one end of the handpiece 300 is hinged to the exposed portion of the cabin 200, so that the other end of the handpiece 300 extends outside the outer peripheral wall of the housing 100. However, it is obvious that the length of the cabin 200 is longer in this manner. Therefore, please refer toFigure 2 In one embodiment, a guiding hole 102 is axially formed in the outer peripheral wall of the housing 100 along the axis of the housing 100, and the guiding hole 102 communicates with the mounting hole 101; a protruding portion 210 is provided on the outer peripheral wall of the cabin body 200, and the protruding portion 210 is slidably assembled in the guiding hole 102, and one end of the protruding portion 210 away from the outer peripheral wall of the cabin body 200 protrudes from the outer peripheral wall of the housing 100; wherein, one end of the handheld member 300 is rotatably connected to the end of the protruding portion 210 away from the outer peripheral wall of the cabin body 200.

[0144] Specifically, a guiding hole 102 is axially formed in the outer peripheral wall of the housing 100 along the axis of the housing 100. The guiding hole 102 may specifically be a waist-shaped hole or a rectangular hole or other hole structures. The guiding hole 102 penetrates through the side wall of the housing 100 in the radial direction of the housing 100 and communicates with the mounting hole 101.

[0145] A part of the surface of the outer peripheral wall of the cabin body 200 protrudes to form a protruding portion 210, or a protruding portion 210 is fixed to the outer peripheral wall of the cabin body 200 by fasteners such as screws or by welding or other means; when needed, the protruding portion 210 can be installed after the housing 100 is sleeved on the cabin body 200. The protruding portion 210 enters the guiding hole 102 from the side of the guiding hole 102 close to the mounting hole 101. In this way, the protruding portion 210 slides back and forth in the guiding hole 102, and its sliding stroke limits the sliding stroke of the cabin body 200 in the housing 100. Of course, since the charging socket is generally vertically arranged or arranged at 45°, the sliding of the protruding portion 210 in the guiding hole 102 can also prevent the cabin body 200 from disengaging from the housing 100 under the action of gravity.

[0146] In addition, the protruding portion 210 penetrates through the guiding hole 102 along the depth direction of the guiding hole 102 and extends outside the guiding hole 102, so that one end of the protruding portion 210 away from the outer peripheral wall of the cabin body 200 protrudes from the outer peripheral wall of the housing 100. At this time, one end of the protruding portion 210 away from the outer peripheral wall of the cabin body 200 is hinged to one end of the handheld member 300, so that the entire handheld member 300 is located outside the radial direction of the housing 100.

[0147] It is not difficult to see that in this embodiment, through the arrangement of the guiding hole 102 and the protruding portion 210, the handheld member 300 can be arranged outside the radial direction of the housing 100. Compared with the handheld member 300 being arranged at the rear side of the housing 100, the overall length of the handheld member 300 and the stroke of the cabin body 200 in the housing 100 can be reduced, and further the force between the cabin body 200 and the housing 100 can be reduced.

[0148] It can be understood that after the charging terminal 220 of the cabin body 200 is connected to the charging socket of the charging plug, the cabin body 200 is locked by the friction force between the charging terminal 220 and the charging socket of the charging plug. However, locking by friction force is not reliable. Therefore, please refer toFigures 1 to 8 , in one embodiment, the charging plug further includes a first locking member 600 disposed on the outer peripheral wall of the housing 100 and movable between a first position and a second position. When the first locking member 600 is in the first position, the first locking member 600 is adapted to cooperate with the protruding portion 210 to limit the sliding of the protruding portion 210 when the charging terminal 220 is connected to the charging socket of the charging plug. When the first locking member 600 is in the second position, the first locking member 600 is separated from the protruding portion 210 to allow the protruding portion 210 to slide.

[0149] Thus, in this embodiment, a first locking member 600 is added, and the sliding of the protruding portion 210 in the guiding hole 102 is restricted by the first locking member 600. Since the protruding portion 210 is fixedly connected to the cabin body 200, the sliding of the cabin body 200 within the housing 100 is also restricted. Compared with only achieving locking through the friction between the charging terminal 220 and the charging socket, in this embodiment, an additional mechanical mechanism such as the first locking member 600 is used for locking, which is obviously more reliable.

[0150] In one embodiment, the first locking member 600 can be configured as a movable stopper, and the movable stopper is rotatably disposed on the outer peripheral wall of the housing 100. It can rotate into the guiding hole 102 to be in the first position to restrict the sliding of the protruding portion 210, or rotate outside the guiding hole 102 to be in the second position to separate from the protruding portion 210.

[0151] Or in another embodiment, a guiding groove 103 is formed on the outer peripheral wall of the housing 100. The guiding groove 103 communicates with the guiding hole 102, and the extending direction of the guiding groove 103 intersects with the extending direction of the guiding hole 102. Among them, the first locking member 600 is slidably assembled in the guiding groove 103 along the extending direction of the guiding groove 103 so that the first locking member 600 can slide between the first position and the second position.

[0152] Specifically, a guiding groove 103 is formed on the outer peripheral wall of the housing 100. The guiding groove 103 communicates with the guiding hole 102 and is arranged near the front end of the guiding hole 102 in the axial direction of the housing 100. Thus, when the first locking member 600 slides in the guiding groove 103 to the connection position of the first guiding groove 103 and the guiding hole 102, it can move into the guiding hole 102, dividing the guiding hole 102 into a first hole section for accommodating the protruding portion 210 when the charging terminal 220 is connected to the charging socket of the charging plug at the front side, and a second hole section that is vacant at the rear side.

[0153] Understandably, in a feasible embodiment, the guiding groove 103 extends circumferentially along the outer shell 100. That is, in an axial cross-section of the outer shell 100, the projection of the guiding groove 103 and the projection of the guiding hole 102 are perpendicular to each other, and their projections in an axial cross-section of the outer shell 100 form a shape like a "T" rotated 90° or a "cross". Of course, in other embodiments, the projections of the guiding groove 103 and the guiding hole 102 in the axial cross-section of the outer shell 100 can also form shapes such as an "x", and this embodiment does not limit this.

[0154] It is worth mentioning that the notch of the guiding groove 103 faces the radially outer side of the outer shell 100, so as to facilitate ensuring that personnel operate the first locking member 600 from the radially outer side of the outer shell 100, such as toggling the first locking member 600 to make it slide in the guiding groove 103.

[0155] Of course, in order to enable the first locking member 600 to better support the protruding portion 210 from behind the protruding portion 210, the guiding groove 103 penetrates through the guiding hole 102, so that both ends of the guiding groove 103 are located on both sides in the width direction of the guiding hole 102. In addition, the dimension of the first locking member 600 in the width direction of the guiding hole 102 is greater than the width dimension of the guiding hole 102, which can prevent the first locking member 600 from falling off from the guiding hole 102 when sliding to the communication part between the guiding hole 102 and the guiding groove 103.

[0156] At this time, the projections of the guiding hole 102 and the guiding groove 103 in an axial cross-section of the outer shell 100 form a "cross" shape. In this way, when the first locking member 600 moves to the communication part between the guiding hole 102 and the guiding groove 103, the first locking member 600 straddles the guiding hole 102, and both ends of it are supported by the groove side walls of the guiding groove 103. Coupled with the fact that the dimension of the first locking member 600 in the width direction of the guiding hole 102 is greater than the width dimension of the guiding hole 102, when the first locking member 600 slides in the guiding groove 103 along the extending direction of the guiding groove 103 to the communication part between the guiding groove 103 and the guiding hole 102, a part of the first locking member 600 will block the guiding hole 102 and support the protruding portion 210 from behind the protruding portion 210, preventing the protruding portion 210 that has moved to the front end of the guiding hole 102 from sliding backward in the guiding hole 102.

[0157] Understandably, in order to prevent the first locking member 600 from falling off in the guiding groove 103 during the sliding process, please refer to Figure 7 , in an embodiment, the guiding groove 103 includes a first groove section 1031 and a second groove section 1032 that are sequentially arranged and communicated with each other in the direction from the radially inner side to the radially outer side of the outer shell 100, and the dimension of the first groove section 1031 in the axial direction of the outer shell 100 is greater than the dimension of the second groove section 1032 in the axial direction of the outer shell 100.

[0158] It can be seen that in this embodiment, since the dimension of the first groove section 1031 in the axial direction of the housing 100 is larger than that of the second groove section 1032 in the axial direction of the housing 100, a step structure is formed at the junction of the first groove section 1031 and the second groove section 1032. In this way, the guiding groove 103 is configured as a structure such as an L-shaped groove, a T-shaped groove or a dovetail groove.

[0159] Correspondingly, the first locking member 600 includes: a sliding portion 610 and a handle portion 620. At least part of the shape of the sliding portion 610 matches the shape of the first groove section 1031, so that at least part of the sliding portion 610 is slidably assembled in the first groove section 1031 along the extending direction of the first groove section 1031; the handle portion 620 is disposed on one surface of the sliding portion 610 facing away from the inner peripheral wall of the housing 100, and at least part of the handle portion 620 protrudes from the outer peripheral wall of the housing 100.

[0160] Specifically, the cross-sectional shape of the sliding portion 610 may be such that the overall contour thereof matches the contour of the first groove section 1031. For example, the cross-sectional shape of the sliding portion 610 is rectangular, so that the sliding portion 610 slides integrally within the first groove section 1031. A part of the surface of the sliding portion 610 facing away from the inner peripheral wall of the housing 100 is exposed from the communication portion of the first groove section 1031 and the second groove section 1032. The handle portion 620 can be fixed to one surface of the sliding portion 610 facing away from the inner peripheral wall of the housing 100 by means of fasteners such as screws, welding, bonding, etc. Of course, the handle portion 620 can also be integrally formed with the sliding portion 610.

[0161] Alternatively, the cross-sectional shape of the sliding portion 610 may also be such that a part thereof matches the contour of the first groove section 1031 and the remaining part matches the contour of the second groove section 1032. For example, the cross-sectional shape of the sliding portion 610 is T-shaped, the horizontal section of the T-shape is assembled in the first groove section 1031, and the vertical section of the T-shape is assembled in the second groove section 1032. A part of the surface of the vertical section is exposed from the opening of the second groove section 1032, and the handle portion 620 is fixed to the exposed surface of the vertical section at this time. In addition, the handle portion 620 extends outward in the depth direction of the second groove section 1032 until at least part of the handle portion 620 protrudes from the outer peripheral wall of the housing 100, so as to facilitate ensuring that personnel operate the handle portion 620 and then toggle the sliding portion 610.

[0162] It is not difficult to see that in this embodiment, since the dimension of the first groove section 1031 in the axial direction of the housing 100 is larger than that of the second groove section 1032 in the axial direction of the housing 100, the degree of freedom of the sliding portion 610 of the first locking member 600 in the depth direction of the guiding groove 103 is restricted by the step at the junction of the first groove section 1031 and the second groove section 1032, which can prevent the first locking member 600 from disengaging from the guiding groove 103 and improve the reliability of the structure.

[0163] It should be noted that the fastening between the engaging end 110 and the insertion slot 10 can be achieved through various structures, such as a snap structure, a mortise and tenon structure, etc. However, since electric vehicles such as eVTOLs have corresponding requirements not only for the connection strength between the charging plug and the charging socket, but also for ensuring speed. For this reason, in one embodiment, the radial cross-sectional shape of the housing 100 is circular, and the engaging end 110 is configured to be rotatable between a third position and a fourth position around the axial center line of the housing 100. In the third position, the engaging end 110 and the insertion slot 10 are separable in the depth direction of the insertion slot 10. In the fourth position, the engaging end 110 and the insertion slot 10 are locked in the depth direction; the charging plug further includes a second locking structure, and the second locking structure is disposed on the outer peripheral wall of the housing 100, and the second locking structure is adapted to lock the engaging end 110 and the insertion slot 10 in the depth direction of the insertion slot 10 when the engaging end 110 is in the fourth position.

[0164] Specifically, in this embodiment, the connection between the engaging end 110 and the insertion slot 10 is realized by a rotational connection structure. Under the thrust of the operator, the engaging end 110 is inserted into the insertion slot 10 until it stops when encountering an obstacle. The engaging end 110 is in the third position, that is, the engaging end 110 can be withdrawn from the insertion slot 10 in the front-to-back direction. At this time, the depth direction of the insertion slot 10 is also the axial direction of the housing 100. Then the operator can hold a handle 300 with both hands and rotate the housing 100. The engaging end 110 rotates relative to the insertion slot 10 to the fourth position. At this time, the engaging end 110 is locked in the depth direction of the insertion slot 10 and cannot be withdrawn from the insertion slot 10 in the front-to-back direction. That is, the degree of freedom of the engaging end 110 in the axial direction of the housing 100 is restricted. For the rotational degree of freedom of the engaging end 110, it is restricted by the second locking structure.

[0165] The rotational connection between the engaging end 110 and the insertion slot can be specifically realized by structures such as interrupted threads. Please refer to Figure 1 and Figure 2 , or in some embodiments, the engaging end 110 includes at least two stepped portions 120 spaced apart in the circumferential direction of the housing 100, and the stepped portions 120 protrude from the outer peripheral wall of the housing 100 in the radial direction of the housing 100. Among them, the stepped portions 120 can be evenly spaced apart in the circumferential direction of the housing 100.

[0166] It should be noted that the number of the stepped portions 120 determines the rotation angle of the engaging end 110 between the third position and the fourth position. It can be understood that the more the number of the stepped portions 120, the smaller the rotation angle of the engaging end 110 between the third position and the fourth position, that is, the operator can rotate a smaller angle to rotate the engaging end 110 from the third position to the fourth position to complete the axial limit.

[0167] It is worth mentioning that the step portion 120 can be obtained by bending and extending a partial surface of the end face of the joint end 110 in the direction from the radially inner side to the radially outer side of the housing 100. At this time, the step portion 120 protrudes radially from the outer peripheral wall of the housing 100 and axially protrudes from the front end faces of other parts of the housing 100. Alternatively, the step portion 120 can also be formed by extending a partial outer peripheral wall of the housing 100 in the direction from the radially inner side to the radially outer side of the housing 100, so as to protrude from the outer peripheral wall of the housing 100.

[0168] Correspondingly, referring to Figure 10 , in which Figure 10 shows a schematic diagram of the first receiving groove 11 and the second receiving groove 12 of the charging socket corresponding to the cross-section taken along line B-B in Figure 9 . The center line in Figure 10 roughly indicates the central position of the charging socket; wherein, the groove side wall of the insertion groove 10 has at least two first receiving grooves 11 and at least two second receiving grooves 12, and the numbers of the first receiving grooves 11 and the second receiving grooves 12 are both the same as the number of the step portions 120. The at least two first receiving grooves 11 and the at least two second receiving grooves 12 are alternately arranged in the circumferential direction of the insertion groove 10. It can be understood that the first receiving grooves 11 and the second receiving grooves 12 appear in turn and are alternately arranged in the circumferential direction of the insertion groove 10; the first receiving grooves 11 and the second receiving grooves 12 are in one-to-one correspondence and the first receiving grooves 11 communicate with the corresponding second receiving grooves 12. The first receiving grooves 11 penetrate the groove side wall of the insertion groove 10 along the direction close to the groove opening of the insertion groove 10 to communicate with the outside. At the third position, the step portion 120 is assembled in the first receiving groove 11; the step portion 120 is rotated along the circumferential direction of the insertion groove 10 to the fourth position. At the fourth position, the step portion 120 is assembled in the second receiving groove 12; in the axial direction of the housing 100, the housing 100 is provided with a solid portion outside the second receiving groove 12, so as to prevent the step portion 120 in the fourth position from coming outwards.

[0169] Please refer to Figure 9 and Figure 10 . Specifically, the groove side wall of the insertion groove 10 is alternately provided with the first receiving grooves 11 and the second receiving grooves 12 having the same number as the step portions 120 at a certain distance from the groove opening along the circumferential direction of the insertion groove 10. And two adjacent first receiving grooves 11 and second receiving grooves 12 are a corresponding group to each other, and the two communicate with each other in the circumferential direction of the insertion groove 10. In addition, in the depth direction of the insertion groove 10, that is, the insertion direction of the housing 100, the first receiving grooves 11 extend along the direction close to the groove opening of the insertion groove 10 until they penetrate the groove side wall of the insertion groove 10 to communicate with the outside.

[0170] In this way, when ensuring that the user needs to insert the charging plug into the insertion slot 10, align each step portion 120 with the opening of the first receiving slot 11 at the slot opening, and then push the housing 100 along the depth direction of the insertion slot 10. After encountering an obstacle, the user rotates the housing 100 so that the engaging end 110 rotates from the first receiving slot 11 to the second receiving slot 12, completing the axial limit of the housing 100 in the insertion slot 10.

[0171] Of course, all the first receiving slots 11 and all the second receiving slots 12 can be sequentially connected in the circumferential direction of the insertion slot 10 to form an annular slot. Alternatively, in other embodiments, adjacent but different groups of the first receiving slots 11 and the second receiving slots 12 are separated from each other and not connected in the circumferential direction of the insertion slot 10. At this time, the structural strength of the charging socket is better.

[0172] In order to achieve the rotational limit between the engaging end 110 and the insertion slot 10, the second locking structure can be specifically configured to lock by using friction, such as a caliper, etc., or to limit by the shaft-hole fit between the engaging end 110 and the charging socket, such as a pin shaft structure or a bolt structure. Of course, the shaft-hole fit limit structure is simpler and the limit is more reliable. The shaft-hole fit can be that the charging socket is provided with a shaft structure, and a hole structure is opened on the housing 100 of the charging plug, and the limit is achieved when the two cooperate. However, it can be understood that when the charging socket is arranged on the eVTOL, if a shaft structure is arranged on the charging socket, it will inevitably affect the weight and aerodynamic shape of the eVTOL. Therefore, in some embodiments, a hole structure is opened on the charging socket, and a shaft structure is arranged on the housing 100 of the charging plug. Specifically, the charging socket is provided with a locking hole; the second locking structure includes a flexible connecting piece and a bolt, and the bolt is suspended on the outer peripheral wall of the housing 100 through the flexible connecting piece, and the bolt can extend into or out of the locking hole.

[0173] Among them, the locking hole can be arranged at the connection end face of the charging socket, and its axial direction is parallel to the depth direction of the insertion slot 10. The bolt is suspended on the outer peripheral wall of the housing 100 through a flexible connecting piece such as a steel wire rope, a chain, a flexible belt, etc. When the engaging end 110 is in the fourth position, the user inserts the bolt into the locking hole and completes the axial and radial limits with the locking hole, thereby realizing the constraint of the rotational freedom between the engaging end 110 and the insertion slot.

[0174] Of course, the axial direction of the locking hole can also be parallel to the radial direction of the insertion slot 10, as long as the shaft-hole fit with the bolt can be achieved, and this embodiment does not limit this.

[0175] Since the engaging end 110 of the housing 100 and the insertion slot are rotationally locked, and both the first receiving slot 11 and the second receiving slot 12 are opened on the slot side wall of the insertion slot 10, the user cannot directly visually perceive that the engaging end 110 rotates to the fourth position. For this reason, please refer to Figure 9, in one embodiment, the charging socket has a first identifier 13, and the outer peripheral wall of the housing 100 has a second identifier; wherein, when the mating end 110 is in the fourth position, the first identifier 13 is aligned with the second identifier.

[0176] Specifically, the first identifier 13 and the second identifier can be configured as triangular symbols, arrow symbols, pointer symbols, etc. In one embodiment, on the plane of the connection end face of the charging socket, the first identifier 13 is located radially outside the insertion slot, and the distance between the first identifier 13 and the slot opening of the insertion slot is such that after the mating end 110 of the housing 100 is inserted into the insertion slot 10 and rotated to the fourth position, the first identifier 13 is not blocked. Similarly, the second identifier is located on the outer peripheral wall of the housing 100, and the distance between the second identifier and the end face of the mating end 110 is such that after the mating end 110 of the housing 100 is inserted into the insertion slot and rotated to the fourth position, the second identifier is not blocked.

[0177] Of course, in some other embodiments, the first identifier 13 can be located on the outer periphery of the charging socket, and this embodiment does not limit this.

[0178] Therefore, when a user needs to insert the charging plug into the insertion slot 10, align each step portion 120 with the opening of the first receiving slot 11 at the slot opening, and then push the housing 100 in the depth direction of the insertion slot 10. After encountering an obstacle, the user rotates the housing 100 so that the mating end 110 rotates from the first receiving slot 11 to the second receiving slot 12 until the first identifier 13 and the second identifier are aligned, completing the axial limit of the housing 100 in the insertion slot 10. At this time, the user can insert the bolt into the locking hole to achieve circumferential limit.

[0179] In addition, the present utility model also provides a charging gun, including a charging plug and a charging cable, and the charging cable is connected to the housing of the charging plug. The specific structure of this charging plug refers to the above embodiments. Since this charging gun adopts all the technical solutions of the above embodiments, it has at least all the beneficial effects brought by the technical solutions of the above embodiments, and will not be elaborated here one by one.

[0180] Wherein, the charging cable is connected to the end face of the housing on the side away from the mating end. In addition, a cooling channel communicating with the liquid inlet pipe or the liquid outlet pipe is defined in the charging cable for an insulating heat exchange fluid to flow through.

[0181] In addition, the present utility model also provides a charging assembly, including: a charging socket; and a charging plug, and the charging plug is detachably cooperated with the charging socket. The specific structure of this charging plug refers to the above embodiments. Since this charging assembly adopts all the technical solutions of the above embodiments, it has at least all the beneficial effects brought by the technical solutions of the above embodiments, and will not be elaborated here one by one.

[0182] The above are only exemplary embodiments of the present utility model, and do not limit the patent scope of the present utility model accordingly. Any equivalent structural transformation made under the technical concept of the present utility model by using the content of the specification and drawings of the present utility model, or any direct / indirect application in other related technical fields is included in the patent protection scope of the present utility model.

Claims

1. A charging plug, characterized in that, The charging plug includes a plug body. At least two charging terminals and at least two fluid interfaces are provided on a first surface of the plug body. One end of the plug body corresponding to the first surface is adapted to be detachably engaged with a plug slot of a charging socket. The plug body further defines: a fluid channel for connecting to a cooling source; a fluid flow-through cavity that communicates with the fluid channel and the fluid interface respectively. The fluid flow-through cavity is for a heat exchange fluid from the cooling source to flow through, and the fluid interface is for connecting to a cooling circuit of an external device; In a first direction, the axis of at least one of the fluid interfaces is located between the axes of the two charging terminals. The first direction lies in the first surface.

2. The charging plug according to claim 1, wherein, In the first direction, at least one row of the fluid interfaces is provided on the first surface. Each row of the fluid interfaces has spaced-apart fluid interfaces in a second direction. The second direction lies in the first surface and intersects the first direction; and / or In the first direction, at least some of the charging terminals are arranged between an edge of the first surface and all of the fluid interfaces.

3. The charging plug according to claim 2, wherein, In the first direction, at least two rows of the fluid interfaces are provided on the first surface. The at least two rows of the fluid interfaces include four arranged around a central region of the first surface. On the first surface, for the four fluid interfaces arranged around the central region of the first surface, the centers of the respective fluid interfaces form a virtual quadrilateral as endpoints, and at least some of the charging terminals are arranged outside the virtual quadrilateral; On the first surface, some of the charging terminals are arranged outside the virtual quadrilateral and some of the charging terminals are arranged inside the virtual quadrilateral.

4. The charging plug according to claim 3, characterized in that, The plug body includes a cabin and at least two wire harnesses. The first surface is provided at an end of the cabin; A liquid inlet pipe and a liquid outlet pipe are provided on a second surface of the cabin. Both the liquid inlet pipe and the liquid outlet pipe are adapted for an insulating heat exchange fluid to flow through. The liquid inlet pipe and the liquid outlet pipe communicate with the fluid flow-through cavity respectively. The fluid channel includes the liquid inlet pipe and the liquid outlet pipe; The fluid flow-through cavity is defined inside the cabin. The fluid flow-through cavity includes a liquid inlet cooling cavity and a liquid outlet cooling cavity. The liquid inlet cooling cavity and the liquid outlet cooling cavity are respectively arranged on two sides of a central axis of the cabin. A part of all the fluid interfaces communicates with the liquid inlet pipe through the liquid inlet cooling cavity, and another part of all the fluid interfaces communicates with the liquid outlet pipe through the liquid outlet cooling cavity.

5. The charging plug according to claim 4, wherein, The multiple charging terminals include at least two low-voltage emergency power supply terminals and at least two high-voltage DC terminals. The low-voltage emergency power supply terminals and the high-voltage DC terminals respectively penetrate through an inner cavity defined by the plug body and are connected to corresponding wire harnesses, or extend into the inner cavity defined by the plug body and are connected to corresponding wire harnesses.

6. The charging plug according to claim 5, wherein, A drying cavity is defined inside the cabin. The drying cavity, the liquid inlet cooling cavity and the liquid outlet cooling cavity are arranged side by side. The drying cavity is independent of the liquid inlet cooling cavity and the liquid outlet cooling cavity respectively; Wherein, the low-voltage emergency power supply terminal penetrates through the drying chamber and is connected to the corresponding low-voltage power supply charging wire harness, or extends into the drying chamber and is connected to the corresponding low-voltage power supply charging wire harness; and / or In the radial cross-section of the cabin, the drying chamber is located at the geometric center of the cabin, and the liquid inlet cooling chamber and the liquid outlet cooling chamber are respectively located on both sides of the drying chamber.

7. The charging plug according to claim 6, wherein The first surface of the cabin has a first area facing the liquid inlet cooling chamber, a second area facing the liquid outlet cooling chamber, and a third area corresponding to the drying chamber. The first direction is parallel to the direction from the first area to the second area, and the third area is located within the virtual quadrilateral; The first fluid input port and the second fluid input port among the multiple fluid interfaces are arranged in the first area and are respectively communicated with the liquid inlet cooling chamber, and are spaced apart from each other along the second direction; the first fluid output port and the second fluid output port among the multiple fluid interfaces are arranged in the second area and are respectively communicated with the liquid outlet cooling chamber, and are spaced apart from each other along the second direction; the first fluid input port and the first fluid output port are oppositely arranged and spaced apart from each other in the first direction, and the second fluid input port and the second fluid output port are oppositely arranged and spaced apart from each other in the first direction; The high-voltage DC terminal includes a high-voltage DC positive terminal and a high-voltage DC negative terminal, and the charging terminal further includes a grounding terminal, a low-voltage auxiliary power supply positive terminal, a low-voltage auxiliary power supply negative terminal, a first communication terminal, a second communication terminal, a first charging connection terminal, and a second charging connection terminal; The grounding terminal, the low-voltage auxiliary power supply positive terminal, the low-voltage auxiliary power supply negative terminal, and the high-voltage DC positive terminal are all arranged in the first area and are spaced apart from each other. In the second direction, the grounding terminal, the low-voltage auxiliary power supply positive terminal, the low-voltage auxiliary power supply negative terminal, and the high-voltage DC positive terminal are all located between the first fluid input port and the second fluid input port; The high-voltage DC negative terminal, the first communication terminal, the second communication terminal, the first charging connection terminal, and the second charging connection terminal are all arranged in the second area and are spaced apart from each other; in the second direction, the high-voltage DC negative terminal, the first communication terminal, the second communication terminal, the first charging connection terminal, and the second charging connection terminal are all located between the first fluid output port and the second fluid output port; The low-voltage emergency power supply terminal includes an emergency power supply positive terminal, an emergency power supply negative terminal, a first emergency power supply communication terminal, a second emergency power supply communication terminal, and an emergency power supply grounding terminal. The emergency power supply positive terminal, the emergency power supply negative terminal, the first emergency power supply communication terminal, the second emergency power supply communication terminal, and the emergency power supply grounding terminal are all arranged in the third area and are spaced apart from each other.

8. The charging plug according to claim 7, wherein, In the radial cross-section of the cabin, the shape of the drying chamber is circular or elliptical, and the shapes of the sides of the liquid inlet cooling chamber and the liquid outlet cooling chamber facing away from the drying chamber are both arc-shaped.

9. The charging plug according to claim 5, characterized in that, A part of the charging terminals penetrates through the liquid inlet cooling cavity and is connected to the corresponding wire harness, or extends into the liquid inlet cooling cavity and is connected to the corresponding wire harness; another part of the charging terminals penetrates through the liquid outlet cooling cavity and is connected to the corresponding wire harness, or extends into the liquid outlet cooling cavity and is connected to the corresponding wire harness; A part of the high-voltage DC terminals penetrates through the liquid inlet cooling cavity and is connected to the corresponding wire harness, or extends into the liquid inlet cooling cavity and is connected to the corresponding wire harness; another part of the high-voltage DC terminals penetrates through the liquid outlet cooling cavity and is connected to the corresponding wire harness, or extends into the liquid outlet cooling cavity and is connected to the corresponding wire harness.

10. The charging plug according to any one of claims 1 to 9, characterized in that, The plug body further includes a housing, a handle, and a first fitting. The housing has a mounting hole that axially penetrates the housing, and one axial end of the housing is a mating end, which is adapted to be detachably mated with the insertion slot of the charging socket; At least a part of the cabin of the plug body is disposed in the mounting hole and is axially movable along the housing, and one end face of the cabin close to the mating end is set as the first surface; One end of the handle is rotatably connected to the outer peripheral wall of the cabin around a first rotation axis, so that the other end of the handle approaches or moves away from the mating end on the radially outer side of the housing; One end of the first fitting is rotatably connected to the middle of the handle around a second rotation axis, and the other end of the first fitting is rotatably connected to the outer peripheral wall of the housing around a third rotation axis. Any two of the first rotation axis, the second rotation axis, and the third rotation axis are parallel to each other, and the first rotation axis, the second rotation axis, and the third rotation axis are all perpendicular to the axial center line of the housing.

11. The charging plug according to claim 10, wherein, The plug body includes at least two handles and at least two first fittings, and the at least two handles are evenly spaced along the circumferential direction of the cabin; The number of the first fittings is the same as that of the handles and they correspond one by one.

12. The charging plug according to claim 10, wherein, A guiding hole is axially formed in the outer peripheral wall of the housing, and the guiding hole communicates with the mounting hole; A protruding portion is provided on the outer peripheral wall of the cabin, and the protruding portion is slidably assembled in the guiding hole, and one end of the protruding portion away from the outer peripheral wall of the cabin protrudes from the outer peripheral wall of the housing; Wherein, one end of the handle is rotatably connected to the end of the protruding portion away from the outer peripheral wall of the cabin.

13. The charging plug according to claim 12, characterized in that, The charging plug further includes: A first locking member, which is disposed on the outer peripheral wall of the housing and is movable between a first position and a second position; When the first locking member is in the first position, the first locking member is adapted to cooperate with the protruding portion to limit the sliding of the protruding portion when the charging terminal is connected to the charging socket of the charging plug. When the first locking member is in the second position, the first locking member is separated from the protruding portion to allow the protruding portion to slide.

14. The charging plug according to claim 13, characterized in that, A guiding groove is formed in the outer peripheral wall of the housing, and the guiding groove communicates with the guiding hole, and the extending direction of the guiding groove intersects with the extending direction of the guiding hole; Wherein, the first locking member is slidably assembled in the guiding groove along the extending direction of the guiding groove, so that the first locking member is slidable between the first position and the second position; The guiding groove penetrates through the guiding hole, so that two ends of the guiding groove are respectively located on two sides in the width direction of the guiding hole; And the dimension of the first locking member in the width direction of the guiding hole is greater than the width dimension of the guiding hole.

15. The charging plug according to claim 10, wherein, The radial cross-sectional shape of the outer shell is circular; The connecting end is configured to be rotatable between a third position and a fourth position around the axial center line of the outer shell. In the third position, the connecting end is separable from the insertion slot in the depth direction of the insertion slot. In the fourth position, the connecting end is locked with the insertion slot in the depth direction; The charging plug further includes a second locking structure, and the second locking structure is arranged on the outer peripheral wall of the outer shell. The second locking structure is adapted to lock the connecting end with the insertion slot in the depth direction of the insertion slot when the connecting end is in the fourth position.

16. The charging plug according to claim 15, characterized in that, The charging socket is provided with a locking hole; The second locking structure includes a flexible connecting member and a pin. The pin is suspended on the outer peripheral wall of the outer shell through the flexible connecting member, and the pin can extend into or out of the locking hole.

17. The charging plug according to claim 15 or 16, characterized in that, The charging socket has a first identifier, and the outer peripheral wall of the outer shell has a second identifier; Wherein, when the connecting end is in the fourth position, the first identifier is aligned with the second identifier.

18. A charging gun, characterized in that, Comprising: The charging plug according to any one of claims 1 to 17; A charging cable, and the charging cable is connected to the cabin body of the charging plug.

19. A charging component, characterized in that, Comprising: A charging socket; And The charging plug according to any one of claims 1 to 17, and the charging plug is detachably matched with the charging socket.

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