Adapter device and vehicle

Abstract

A vehicle, comprising an adapter device. The adapter device is used for achieving power transmission between vehicles. The adapter device comprises an adapter body and a locking assembly. One end of the adapter body is a vehicle end, which is used for being connected to a first vehicle, and the other end of the adapter body is a socket end, which is used for being connected to a power supply gun. The power supply gun is used for being connected to a second vehicle. The locking assembly is arranged on the adapter body, and when the power supply gun is connected to the socket end, the locking assembly is used for achieving locking between the socket end and the power supply gun.

Description

Adapters and vehicles

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to Chinese patent application filed on October 31, 2023, with application number 202322952654.1 and patent application name “Transfer Device and Vehicle”, all contents of which are incorporated by reference into this application. Technical Field

[0003] The present application relates to the field of electric vehicle charging, and more specifically, to a switching device and a vehicle. Background Art

[0004] Vehicle to Vehicle (V2V) technology allows electric vehicles to transfer the power in their power battery packs to another electric vehicle. Electric vehicles achieve V2V through an adapter, which is plugged into the vehicle socket of the first vehicle, and the power supply gun connected to the second vehicle is connected to the adapter, thereby enabling the first vehicle to supply power to the second vehicle. However, in related technologies, when connecting the power supply gun to the adapter, the connection between the power supply gun and the adapter is unreliable. After the user finishes charging, there is a risk of unplugging the power supply gun while it is powered on, which will not only burn the terminals of the power supply gun and the adapter, but also reduce the service life of the product and may even cause electric shock.

[0005] Summary of the Invention

[0006] The present application aims to solve at least one of the above-mentioned technical problems in the prior art to a certain extent. To this end, the present application proposes a switching device that can improve the reliability and stability of the connection between the power supply gun and the switching device, and can improve the safety of V2V charging.

[0007] The application also provides a vehicle having the switching device.

[0008] According to an embodiment of the present application, the adapter device is used to realize power transmission between vehicles. The adapter device includes: an adapter body and a locking assembly. One end of the adapter body is a vehicle end, which is used to connect to a first vehicle, and the other end is a socket end, which is used to connect to a power supply gun, and the power supply gun is used to connect to a second vehicle; the locking assembly is arranged on the adapter body, and when the power supply gun is connected to the socket end, the locking assembly is used to realize locking between the socket end and the power supply gun.

[0009] According to the adapter device of the embodiment of the present application, a locking assembly is provided to secure and connect the adapter device to the power supply gun. During charging, the vehicle end is connected to the first vehicle, and the socket end is connected to the power supply gun. The first vehicle supplies power to the power supply gun through the adapter device, and the power supply gun transmits the power to the second vehicle, thereby enabling the first vehicle to charge the second vehicle. The locking assembly can improve the stability and reliability of the power supply gun plugged into the adapter device. After charging is completed, the locking assembly must be adjusted to the unlocked state before the power supply gun is removed. If the lock is unlocked, the user cannot remove the power supply gun, thereby avoiding the risk of ablation and electric shock, which improves the safety of the adapter device.

[0010] In some embodiments, the adapter body includes a shell and a terminal assembly, the terminal assembly is disposed in the shell, and the terminal assembly is used to achieve electrical connection between the vehicle end and the socket end.

[0011] In some embodiments, the shell includes: a discharge gun shell and a power socket shell, the discharge gun shell includes the vehicle end, the power socket shell includes the socket end, and the power socket shell is connected to the discharge gun shell; the first connecting end of the terminal assembly extends into the discharge gun shell, and the second connecting end of the terminal assembly extends into the power socket shell; the locking assembly is arranged on the discharge gun shell and / or the power socket shell.

[0012] In some embodiments, the locking assembly includes: a locking hook, which is installed on the discharge gun housing or the power socket housing. When the power gun is connected to the power socket housing, the locking hook is used to lock the power socket housing and the power gun.

[0013] In some embodiments, the locking assembly further includes: a reset mechanism, which is used to apply a reset force to the locking hook to move the locking hook to lock the power socket housing and the power supply gun.

[0014] In some embodiments, the power socket shell has a power supply gun cavity for connecting to the power supply gun, and the power socket shell is provided with a hole groove connected to the power supply gun cavity. The locking hook includes a locking portion. When the locking assembly locks the power socket shell and the power supply gun, the locking portion passes through the hole groove and extends into the power supply gun cavity; when the locking assembly unlocks the power socket shell and the power supply gun, the locking portion withdraws from the power supply gun cavity.

[0015] In some embodiments, the end of the power supply gun cavity facing away from the discharge gun housing is opened as a power supply gun socket, and the end of the locking portion facing the power supply gun socket is provided with a chamfered structure, and the end of the chamfered structure is inclined toward the direction of the discharge gun housing.

[0016] In some embodiments, the terminal assembly includes a power terminal and a signal terminal, and a control circuit is provided between the power terminal and the signal terminal; the adapter device also includes a switch assembly, the switch assembly is provided on the discharge gun housing, the switch assembly is provided in the control circuit, and the switch assembly has a first working state and a second working state. When the switch assembly switches from the first working state to the second working state, the state of the control circuit changes to trigger automatic power-off of the first vehicle.

[0017] In some embodiments, the switch assembly includes a trigger structure, and the lock hook includes a pressing portion. When the pressing portion switches between pressing against the trigger structure and separating from the trigger structure, the switch assembly switches from the first working state to the second working state.

[0018] In some embodiments, the lock hook includes a lock hook body, which is rotatably mounted on the power socket shell through a fixed pin shaft, and the locking part and the pressing part are both connected to the lock hook body, and the locking part and the pressing part are separated.

[0019] In some embodiments, one of the discharge gun housing and the power socket housing has a plug-in section, and the other has a sleeve section, the plug-in section is sleeved in the sleeve section, and a switch limiting structure is provided on the plug-in section. The switch assembly includes a switch base, and the switch base is limited between the switch limiting structure and the sleeve section. An open groove is provided on the sleeve section, and a width of the switch base is smaller than a groove width of the opening groove. The trigger structure is arranged on the switch base, and the trigger structure is located in the opening groove. The pressing portion is suitable for pressing the trigger structure through the opening groove.

[0020] In some embodiments, a switch sealing structure is provided at the joint between the switch base and the plug-in section.

[0021] In some embodiments, the adapter device further includes a pressing plate, which is clamped between the power socket housing and the discharge gun housing, and a positioning groove for the terminal assembly to pass through is formed on the pressing plate.

[0022] In some embodiments, a first hole is provided on the discharge gun housing for the terminal assembly to pass through, and a first sealing structure is provided at the mating position between the terminal assembly and the discharge gun housing. A second hole is provided on the power socket housing for the terminal assembly to pass through, and a second sealing structure is provided at the mating position between the terminal assembly and the power socket housing.

[0023] In some embodiments, a discharge gun locking groove for engaging with a lock of the first vehicle is provided on an outer peripheral wall of the discharge gun housing.

[0024] In some embodiments, one of the discharge gun housing and the power socket housing is provided with a hook structure, and the other is provided with a slot structure suitable for engaging with the hook structure.

[0025] In some embodiments, a third sealing structure is provided at the connection between the discharge gun housing and the power socket housing.

[0026] In some embodiments, the power socket housing is provided with a drainage hole that passes through the housing wall of the power socket housing.

[0027] The vehicle according to the embodiment of the present application includes the switching device according to the embodiment of the present application.

[0028] According to the vehicle of the embodiment of the present application, the above-mentioned adapter device can improve the safety of V2V, simplify the structure and reduce costs.

[0029] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become obvious from the description below, or will be learned through practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] FIG1 is an exploded view of a switching device according to an embodiment of the present application;

[0031] FIG2 is a schematic structural diagram of a switch assembly on a discharge gun housing according to an embodiment of the present application;

[0032] FIG3 is a schematic structural diagram of a locking assembly on a power socket housing according to an embodiment of the present application;

[0033] FIG4 is a cross-sectional view of the adapter according to an embodiment of the present application at one viewing angle;

[0034] FIG5 is an enlarged cross-sectional view of the adapter according to an embodiment of the present application;

[0035] FIG6 is a cross-sectional view of the adapter according to an embodiment of the present application at another viewing angle;

[0036] FIG7 is a schematic structural diagram of a switching device according to an embodiment of the present application at a viewing angle;

[0037] FIG8 is a schematic structural diagram of the adapter according to an embodiment of the present application from another perspective;

[0038] FIG9 is a cross-sectional view of the adapter according to an embodiment of the present application at another viewing angle;

[0039] FIG10 is a schematic structural diagram of a vehicle according to an embodiment of the present application.

[0040] : Reference numerals: Vehicle 2000; Power supply gun 1000, slot 1100; Adapter 100; Discharge gun housing 1, Vehicle socket 10, Plug section 11, Hook structure 111, Switch limit structure 112, Discharge gun terminal insulating column 12, Discharge gun lock slot 14; Power supply socket housing 2, Power supply gun cavity 20, Hole slot 21, Bracket 22, Power supply gun socket 23, Open slot 24, Power supply socket housing end face 25, Sleeve section 26, Slot structure 27, Drain hole 28, Power supply socket terminal insulating column 29; Terminal assembly 3, First connection end 31, Second connection end 32, Power terminal 33, Signal terminal 34; Locking assembly 4, Lock hook 40, Locking portion 401, Chamfered structure 4011, Lock hook body 402, Pressing portion 403, Guide bevel 404, fixed pin 41, reset mechanism 42, damping element 421, damping mounting shaft 422; switch assembly 5, trigger structure 50, switch base 51; switch sealing structure 6; pressure plate 7, positioning groove 70; first sealing structure a, second sealing structure b, third sealing structure c; locked state α, unlocked state β. DETAILED DESCRIPTION

[0041] The following describes in detail embodiments of the present application, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present application, and should not be construed as limiting the present application.

[0042] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of the technical features indicated. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined.

[0043] The switching device 100 according to an embodiment of the present application is described in detail below with reference to FIG. 1 to FIG. 10 .

[0044] As shown in FIG1 , the adapter device 100 according to an embodiment of the present application can realize power transmission between vehicles. The adapter device 100 includes an adapter body and a locking assembly 4 .

[0045] One end of the adapter body is the vehicle end, which can be connected to the first vehicle; the other end of the adapter body is the socket end, which can be connected to the power supply gun 1000, and the power supply gun 1000 can be connected to the second vehicle. The second vehicle and the first vehicle are connected through the adapter body. The first vehicle is the discharging vehicle and the second vehicle is the powered vehicle. The first vehicle can transfer electricity to the second vehicle, so that the first vehicle supplies power to the second vehicle.

[0046] The locking assembly 4 is mounted on the adapter body and has a locked state α and an unlocked state β. After the adapter 100 and the power supply gun 1000 are docked, the locking assembly 4 locks the power supply gun 1000, preventing it from being removed from the power socket housing 2. When in the locked state α, the locking assembly 4 locks the socket end and the power supply gun 1000, maintaining the connection between the power supply gun 1000 and the socket end, preventing it from being removed after docking, thereby improving the stability and reliability of the connection between the adapter body and the power supply gun 1000. When in the unlocked state β, the power supply gun 1000 can be separated from the socket end and removed from the socket end, preventing the user from carelessly removing the power supply gun 1000 during charging.

[0047] It is worth noting that compared with the related art, the present application is provided with a locking assembly 4. When the locking assembly 4 is in the locking state α, the power supply gun 1000 and the adapter body are fixedly locked, which can improve product safety.

[0048] According to the adapter device 100 of the embodiment of the present application, the locking assembly 4 is provided to achieve fixation and connection between the adapter device 100 and the power supply gun 1000. During charging, the vehicle end is connected to the first vehicle, and the socket end is connected to the power supply gun 1000. The first vehicle transmits power to the power supply gun 1000 through the adapter device 100, and the power supply gun 1000 transmits the power to the second vehicle, thereby enabling the first vehicle to charge the second vehicle. The locking assembly 4 can improve the stability and reliability of the power supply gun 1000 when plugged into the adapter device 100. After charging is completed, the locking assembly 4 must be adjusted to the unlocked state β before the power supply gun 1000 is removed. When the lock is unlocked, the user cannot remove the power supply gun 1000, thereby avoiding the risk of ablation and electric shock, which improves the safety of the adapter device 100.

[0049] As shown in FIG1 , in some embodiments, the adapter body includes a shell and a terminal assembly 3 . The terminal assembly 3 is disposed in the shell. The terminal assembly 3 can realize electrical connection between the vehicle end and the socket end, thereby simplifying the electrical connection structure and reducing costs.

[0050] Optionally, in other embodiments, the adapter body may include a circuit board, and the electrical connection between the vehicle end and the socket end is achieved through the circuit board.

[0051] As shown in FIG1 , in some embodiments, the housing may include a discharge gun housing 1 and a power socket housing 2. The discharge gun housing 1 includes a vehicle end, and the power socket housing 2 includes a socket end. For example, the end of the discharge gun housing 1 facing away from the power socket housing 2 is the vehicle end, and the end of the power socket housing 2 facing away from the discharge gun housing 1 is the socket end. The power socket housing 2 is connected to the discharge gun housing 1. The terminal assembly 3 includes a first connecting end 31 and a second connecting end 32. The first connecting end 31 can extend into the discharge gun housing 1, and the second connecting end 32 can extend into the power socket housing 2.

[0052] During charging, the vehicle socket of the first vehicle extends into the discharge gun housing 1, and the socket is electrically connected to the first connection end 31; the power supply gun 1000 extends into the power supply gun housing 2, and the power supply gun 1000 is electrically connected to the second connection end 32. As a result, the electricity of the first vehicle can be transmitted to the power supply gun 1000 through the vehicle socket, the first connection end 31, and the second connection end 32, and then transmitted to the second vehicle through the power supply gun 1000.

[0053] The locking assembly 4 is disposed on the discharge gun housing 1 and / or the power socket housing 2. Specifically, the locking assembly 4 can be disposed on the discharge gun housing 1. Alternatively, the locking assembly 4 can be disposed on the power socket housing 2. Alternatively, a portion of the locking assembly 4 can be disposed on the discharge gun housing 1 and a portion on the power socket housing 2. Providing the locking assembly 4 only on the discharge gun housing 1 or the power socket housing 2 simplifies installation of the locking assembly 4, improves efficiency, and reduces costs, compared to providing separate locking assemblies 4 on both the discharge gun housing 1 and the power socket housing 2.

[0054] Optionally, the locking assembly 4 is also provided on another bracket, which is adjacent to the discharge gun housing 1 and the power socket housing 2 , so that the locking assembly 4 can conveniently lock the power supply gun 1000 .

[0055] As shown in Figures 1 and 3, in some embodiments, the locking assembly 4 includes a locking hook 40, which is mounted on the discharge gun housing 1 or the power socket housing 2. When the discharge gun 1000 is connected to the power socket housing 2, the locking hook 40 can lock the power socket housing 2 with the discharge gun 1000. The provision of the locking hook 40 can improve the reliability and stability of the connection between the power socket housing 2 and the discharge gun 1000.

[0056] For example, the locking hook 40 can be mounted on the power socket housing 2. When locked, at least a portion of the locking hook 40 extends into the power socket housing 2 and the power supply gun 1000, thereby achieving connection between the power socket housing 2 and the power supply gun 1000.

[0057] As shown in FIG3 , in some embodiments, the locking assembly 4 further includes a reset mechanism 42 , which can apply a reset force to the locking hook 40 . This reset force can drive the locking hook 40 to a position that locks the power socket housing 2 and the power supply gun 1000 . When the power supply gun 1000 is fully inserted into the power socket housing 2 , the reset force applied by the reset mechanism 42 to the locking hook 40 maintains the position that locks the power socket housing 2 and the power supply gun 1000 , eliminating the need for the user to intentionally lock the hook 40 and improving reliability and safety.

[0058] Specifically, the power supply gun 1000 gradually extends into the power supply socket housing 2, and the locking mechanism is in the unlocked state β until the power supply gun 1000 is plugged into the power supply socket housing 2, and the lock hook 40 switches to the locked state α; the reset mechanism 42 can apply a reset force to the lock hook 40, and under the action of the reset force, the lock hook 40 remains in the locked state α; when the power supply gun 1000 needs to be removed from the power supply socket housing 2, the user needs to apply force to the lock hook 40 to offset the influence of the reset force and move the lock hook 40 to the unlocked state β.

[0059] As shown in Figure 3, for example, the reset mechanism 42 includes a damping device 421 and a damping mounting shaft 422, and the damping device 421 is sleeved on the damping mounting shaft 422. Optionally, the damping device 421 can be a spring damper, a torsion spring, etc., and the damping mounting shaft 422 can be installed on the power socket housing 2.

[0060] For example, the locking assembly 4 includes a locking hook 40 and a reset mechanism 42. The locking hook 40 is mounted on the power socket housing 2 via a fixed pin 41. The locking hook 40 rotates relative to the power socket housing 2 about the fixed pin 41. The reset mechanism 42 can apply a reset force to the locking hook 40, which can restore the locking hook 40 to the locked state α.

[0061] Optionally, in some embodiments not shown in the figures, the locking hook 40 may also be mounted on the discharge gun housing 1 via a fixing pin 41 .

[0062] As shown in FIG3 , the power socket housing 2 is optionally provided with a bracket 22, and the lock hook 40 is rotatably mounted on the bracket 22 via a fixed pin 41, thereby achieving installation of the lock hook 40 on the power socket housing 2. The damping mounting shaft 422 can also be mounted on the bracket 22. In this way, by providing the bracket 22, it can support the installation of the fixed pin 41 and the reset mechanism 42, thereby improving the convenience of installation of the lock hook 40 and the reset mechanism 42.

[0063] As shown in FIG. 3 , for example, the fixing pin 41 and the reset mechanism 42 may be inserted into the mounting hole on the bracket 22 .

[0064] As shown in Figures 1 and 4, in some embodiments, the power socket housing 2 has a power supply gun cavity 20, which can be connected to the power supply gun 1000. The power socket housing 2 is provided with a hole groove 21, which is connected to the power supply gun cavity 20.

[0065] Specifically, the vehicle end of the discharge gun housing 1 has a vehicle socket 10, through which the discharge gun housing 1 can be plugged into the vehicle socket. The socket end of the power supply socket housing 2 has a power supply gun cavity 20, which can accommodate the power supply gun 1000.

[0066] When using the adapter 100 for V2V, the vehicle socket 10 of the adapter 100 is plugged into the vehicle socket of the first vehicle, and the power supply gun 1000 connected to the second vehicle is plugged into the power supply gun cavity 20 of the power supply socket housing 2, thereby enabling the first vehicle to supply power to the second vehicle.

[0067] It should be pointed out that the power supply gun cavity 20 here can accommodate and connect the power supply gun 1000; alternatively, the power supply gun cavity 20 can also accommodate and connect other adapters; the power supply gun 1000 can also supply power to the load, thereby realizing V2L (Vehicle to Load, energy interaction technology between vehicles and loads), allowing the vehicle to supply power to other loads.

[0068] As shown in Figures 3 and 4, the locking hook 40 includes a locking portion 401. When the locking assembly 4 is in the locked state α, the locking portion 401 locks the power socket housing 2 and the power supply gun 1000, allowing the locking portion 401 to pass through the slot 21 and extend into the power supply gun cavity 20. When the locking assembly 4 unlocks the power socket housing 2 and the power supply gun 1000, the locking portion 401 retracts from the power supply gun cavity 20. Thus, the slot 21 in the power socket housing 2 engages with the locking assembly 4 and restricts its movement. After the power supply gun 1000 is inserted into the power supply gun cavity 20, the portion of the locking assembly 4 that extends into the power supply gun cavity 20 locks the power supply gun 1000, preventing it from being removed.

[0069] Specifically, when the power supply gun 1000 is inserted into the power supply gun cavity 20, the corresponding locking part 401 of the power supply gun 1000 has a slot 1100 that can accommodate the locking part 401 or a slot 1100 for the locking part 401 to pass through. The size and position of the slot 1100 here are clearly defined in the IEC62196 standard, so all power supply guns on the market can cooperate with the adapter device 100 described in this application.

[0070] When the locking assembly 4 is in the locking state α, the power supply gun 1000 is placed in the power supply gun cavity 20, the locking part 401 can pass through the hole groove 21 and extend into the power supply gun cavity 20, and the locking part 401 can extend into the slot 1100 on the power supply gun 1000, and the reset mechanism 42 continuously applies a reset force to the locking part 401, so that the locking part 401 remains in the position of extending into the slot 1100, thereby realizing the locking of the power supply gun 1000 by the locking assembly 4.

[0071] To remove the power supply gun 1000 from the power supply gun cavity 20, the locking assembly 4 must be adjusted to the unlocked state β. The user then applies force to the reset mechanism 42, causing the locking portion 401 to rotate relative to the fixed pin 41, allowing the locking portion 401 to exit the notch 1100 of the power supply gun 1000. Alternatively, the locking portion 401 exits the notch 1100 and the slot 21 of the power supply gun 1000. This releases the locking assembly 4 from the power supply gun 1000, allowing the power supply gun 1000 to exit the power supply gun cavity 20. The user then stops applying force to the reset mechanism 42, causing the locking portion 401 to reset under its action, i.e., the locking portion 401 extends through the slot 21 and into the power supply gun cavity 20.

[0072] For example, the locking portion 401, the fixing pin 41, and the reset mechanism 42 are arranged in sequence. By pressing the end of the lock hook 40 away from the discharge gun housing 1 (i.e., the right end in FIG. 3 ), the user can cause the locking portion 401 to rotate clockwise around the fixing pin 41, thereby moving the locking portion 401 toward the unlocked state β. When the pressing force on the lock hook 40 is removed, the reset force of the reset mechanism 42 causes the locking portion 401 to rotate counterclockwise around the fixing pin 41, thereby moving the locking portion 401 toward the locked state α.

[0073] As shown in Figures 1, 3, and 4, in some embodiments, the power supply gun cavity 20 is open at one end facing away from the discharge gun housing 1. This open end of the power supply gun cavity 20 serves as the power supply gun socket 23. The locking portion 401 is provided with a chamfered structure 4011, positioned toward one end of the power supply gun socket 23. The distal end of the chamfered structure 4011 (i.e., the lower end in Figure 3) is angled toward the discharge gun housing 1. In Figure 3, the lower end of the chamfered structure 4011 extends leftward, while the upper end of the chamfered structure 4011 extends rightward. The chamfered structure 4011 reduces the resistance between the power supply gun 1000 and the locking portion 401 when the power supply gun 1000 is inserted, reducing the effort required for connection and eliminating the need to press the reset mechanism 42, thereby improving connection convenience.

[0074] Specifically, the locking portion 401 has a chamfered structure 4011 on the side facing the power gun socket 23. The distal end of the chamfered structure 4011 is inclined, forming a chamfered surface. As the power gun 1000 passes through the power gun socket 23 and gradually inserts into the power gun cavity 20, the front end of the power gun 1000 presses against the chamfered surface of the locking portion 401 and slides along the chamfered surface deeper into the power gun cavity 20. At this point, the locking portion 401 rotates about the fixed pin 41. When the notch 1100 of the power gun 1000 aligns with the locking portion 401, the locking portion 401 resets under the reset force of the reset mechanism 42. This means that the locking portion 401 simultaneously passes through the notch 1100 of the power gun 1000 and the slot 21 of the power socket housing 2.

[0075] For example, a lock hook shoulder is provided on the side of the locking portion 401 facing away from the chamfered structure 4011. When the user pulls out the power supply gun 1000 without pressing the lock hook 40, the lock hook shoulder can abut against the slot wall of the power supply gun 1000 to prevent the power supply gun 1000 from escaping from the power supply gun cavity 20.

[0076] In addition, by providing the chamfered structure 4011 , the ease of insertion can be reduced when the locking portion 401 is inserted into the hole 21 of the power socket housing 2 and the notch 1100 of the power supply gun 1000 .

[0077] As shown in Figures 1 and 6, in some embodiments, the terminal assembly 3 includes a power terminal 33 and a signal terminal 34, with a control circuit disposed between the power terminal 33 and the signal terminal 34. The adapter 100 also includes a switch assembly 5, which is disposed on the discharge gun housing 1 and within the control circuit. The switch assembly 5 has a first operating state and a second operating state. When the switch assembly 5 switches from the first operating state to the second operating state, the state of the control circuit changes, triggering an automatic power-off of the first vehicle. Thus, the switch assembly 5 changes the state of the control circuit. When the power supply gun 1000 is properly removed, or when the locking assembly 4 is accidentally unlocked, causing the power supply gun 1000 to be removed, or when the power supply gun 1000 is forcibly removed, power is cut off to the first vehicle and the vehicle socket 10 is disconnected. This prevents damage to the power supply gun 1000 and the adapter 100, extends the service life of the power supply gun 1000 and the adapter 100, and reduces the risk of electric shock caused by improper operation.

[0078] Changes in the operating state of the switch assembly 5 can alter the state of the terminal assembly 3, for example, by changing the CC (Connection Confirm Function) or CP (Control Pilot Function) state of the signal terminal 34, thereby changing the state of the control circuit. The first vehicle can detect the change in the control circuit state through the CC or CP electrical signal change at the signal terminal 34 and automatically shut off power. This prevents the power supply gun 1000 from being disconnected from the adapter 100 while powered on, improving the safety of the adapter 100 and preventing arc erosion caused by the disconnection, thereby extending the service life of the adapter 100 and the power supply gun 100. Therefore, even if the power supply gun 1000 is disconnected while powered on due to force or misoperation by the user, the locking assembly 4 can remain in the unlocked state β at a certain moment. At this time, the operating state of the switch assembly 5 is changed, changing the state of the control circuit within the terminal assembly 3, thereby shutting off power, further improving the safety of the adapter 100 and the power supply gun 100.

[0079] Optionally, the state change of the control circuit may be a change in its resistance or a change in its voltage.

[0080] For example, the switch component 5 can integrate the switch and the resistor into one, and a mature mass-produced product on the market can be purchased. Two cables are led to the switch for series or parallel connection in the control circuit of the terminal component 3.

[0081] As shown in Figures 1, 2 and 6, in some embodiments, the switch assembly 5 includes a trigger structure 50, and the lock hook 40 includes a pressing portion 403. The pressing portion 403 can press against the trigger structure 50, and the pressing portion 403 can also be separated from the trigger structure 50; when the pressing portion 403 switches between the position of pressing against the trigger structure 50 and the position of being separated from the trigger structure 50, the switch assembly 5 switches from the first working state to the second working state.

[0082] For example, when the pressing portion 403 presses against the trigger structure 50, the switch assembly 5 is in a first operating state; when the pressing portion 403 and the trigger structure 50 separate, the switch assembly 5 switches to a second operating state. Thus, when the operating state of the switch assembly 5 changes, the control circuit state changes, and the first vehicle is powered off. The pressing portion 403 of the lock hook 40 can change the operating state of the switch assembly 5, achieving a coordinated operation between the locking assembly 4 and the switch assembly 5. Before and after the locking assembly 4 is unlocked to remove the power supply gun 1000, the operating state of the switch assembly 5 changes, which in turn changes the state of the terminal assembly 3 and, consequently, the control circuit state. The first vehicle can detect the change in the control circuit state through changes in the CC or CP electrical signals at the signal terminal 34 and automatically power off. This prevents the power supply gun 1000 from being disconnected from the adapter 100 while powered on, improving the safety of the adapter 100 and preventing arc erosion caused by the hot disconnection between the adapter 100 and the power supply gun 100, thereby extending the service life of the adapter 100 and the power supply gun 1000. Therefore, even if the power supply gun 1000 is disconnected due to violent operation or misoperation by the user, the locking component 4 can be in the unlocked state β at a certain moment, at which time the state of the switch component 5 is changed, and the state of the control circuit in the terminal component 3 is changed, thereby cutting off the power supply, further improving the safety of use of the adapter device 100 and the power supply gun 1000.

[0083] Specifically, when the locking assembly 4 is in the locked state α, the pressing portion 403 presses against the trigger structure 50 of the switch assembly 5. Under the reset force of the reset mechanism 42, the switch assembly 5 enters the first operating state, enabling electrical connection between the power supply gun 1000 and the vehicle socket via the terminal assembly 3, allowing the first vehicle to supply power to the second vehicle. When the locking assembly 4 moves from the locked state α to the unlocked state β, the trigger structure 50 changes its trigger stroke, causing the state of the control circuit within the switch assembly 5 to change, such as by changing the resistance or on / off state of the signal terminals CC or CP. The vehicle can identify the change in the control circuit state through the change in the CC or CP electrical signal. When the locking assembly 4 is in the unlocked state β, the pressing portion 403 and the trigger structure 50 separate, the switch assembly 5 enters the second operating state, and the first vehicle is automatically powered off. At this point, even if the power supply gun 1000 is properly plugged in, there is no electrical connection between the power supply gun 1000 and the vehicle socket, preventing the power supply gun 1000 from being unplugged while powered on.

[0084] When the user removes power supply gun 1000, they press the lock hook 40 to release the locked state α of the locking assembly 4. The first vehicle then detects the change in the CC or CP electrical signal and immediately stops power supply. When the user removes power supply gun 1000 again, the on-load disconnection phenomenon will not occur, thus improving product lifespan and user safety. When the user inserts power supply gun 1000, the chamfered structure 4011 of the locking portion 401 allows direct insertion without pressing the lock hook 40. The locking assembly 4 then enters the locked state α under the action of the reset force.

[0085] According to the adapter device 100 of the embodiment of the present application, the locking assembly 4 and the switch assembly 5 are provided to control the electrical connection and disconnection, as well as the mechanical connection and disconnection, between the adapter device 100 and the power supply gun 1000. On the one hand, the locking assembly 4 can improve the stability and fixation reliability of the power supply gun 1000 and the power socket housing 2. When removing the power supply gun 1000, the locking assembly 4 must be manually adjusted to the unlocked state β, which improves the safety of the adapter device 100 and reduces the probability of the user carelessly removing the power supply gun 1000. On the other hand, through the cooperation of the trigger structure 50 and the locking assembly 4, the locking assembly 4 and the switch assembly 5 are linked. After the power supply is terminated, when the locking assembly 4 is manually unlocked to remove the power supply gun 1000, the adapter device 100 can trigger the first vehicle to automatically shut off the power, preventing the power supply gun 1000 from being removed while energized, thereby improving the safety of the adapter device 100. Different from the related art, the adapter device 100 of the present application can be used for V2V charging and can be connected to various power supply guns such as national standard power supply guns, American standard power supply guns, and European standard power supply guns.

[0086] As shown in FIG3 , in some embodiments, the lock hook 4 includes a lock hook body 402, which is mounted on the power socket housing 2 via a fixing pin 41. The lock hook body 402 is rotatable relative to the power socket housing 2. The locking portion 401 is connected to the lock hook body 402, and the pressing portion 403 is connected to the lock hook body 402. The lock portion 401 and the pressing portion 403 are separated. By connecting both the locking portion 401 and the pressing portion 403 to the lock hook body 402, the lock hook body 402, the pressing portion 403, and the lock portion 401 can be linked. That is, when the lock hook body 402 moves, the locking portion 401 and the pressing portion 403 also move. Compared with a mechanical linkage structure, this structure is simple, ingenious, and highly reliable.

[0087] As shown in Figures 3, 5, and 7, specifically, the pressing portion 403, the locking portion 401, the fixing pin 41, and the reset mechanism 42 are sequentially spaced apart. The fixing pin 41 and the damping mounting shaft 422 are mounted on the bracket 22. The lock hook body 402 can rotate about the fixing pin 41. The locking assembly 4 is mounted on the power socket housing 2. When the locking assembly 4 is in the locked state α, the right end of the lock hook body 402 is away from the power socket housing 2, while the left end of the lock hook body 402 is closer to the power socket housing 2. When the locking assembly 4 is in the unlocked state β, the right end of the lock hook body 402 is closer to the power socket housing 2, while the left end of the lock hook body 402 is away from the power socket housing 2.

[0088] Optionally, as shown in FIG3 , the locking portion 401 and the lock hook body 402 are connected via a guide bevel 404 . The guide bevel 404 can reduce stress concentration and improve the strength of the connection between the locking portion 401 and the lock hook body 402 .

[0089] As shown in Figures 1 and 4, in some embodiments, the discharge gun housing 1 has a plug section 11, and the power socket housing 2 has a sleeve section 26. The plug section 11 can be sleeved within the sleeve section 26, thereby connecting the discharge gun housing 1 to the power socket housing 2. The provision of the plug section 11 and the sleeve section 26 can achieve positioning and fixation of the discharge gun housing 1, improving the stability of the connection between the discharge gun housing 1 and the power socket housing 2 and the ease of assembly.

[0090] Optionally, in some embodiments not shown in the figures, the discharge gun housing 1 may have a sleeve section 26 , and the power socket housing 2 may have a plug section 11 .

[0091] As shown in Figures 1-2, the plug-in section 11 is provided with a switch limiting structure 112. The switch limiting structure 112 can limit the movement of the switch assembly 5 and maintain the designed position of the switch assembly 5. In conjunction with Figures 4-6, the switch assembly 5 includes a switch base 51. The switch base 51 is limited between the switch limiting structure 112 and the sleeve section 26. Specifically, the sleeve section 26 is provided with an opening 24. The width of the switch base 51 is smaller than the width of the opening 24. Therefore, the opening 24 can limit the movement of the switch base 51 and prevent the switch base 51 from radially dislodging through the opening 24. A trigger structure 50 is provided on the switch base 51. The trigger structure 50 is located within the opening 24, and the locking hook 40 can press against the trigger structure 50 through the opening 24. The trigger structure 50 is mounted on the switch base 51 and positioned within the opening 24. Because the switch base 51 is positioned between the switch limiting structure 112 and the sleeve section 26, when the lock hook 40 presses against the trigger structure 50, the switch assembly 5 is restricted from moving, while the trigger structure 50 can move relative to the switch assembly 5. This change in the position of the trigger structure 50 can alter the state of the control circuit. The opening 24 and the switch limiting structure 112 ensure the relative position of the switch assembly 5 and prevent the switch assembly 5 from loosening when the lock hook 40 presses against the trigger switch assembly 5, thereby preventing degradation in product performance. This simple and ingenious structure offers high reliability, reducing production costs and improving product quality.

[0092] As shown in FIG7 , for example, the width of the opening slot 24 may be smaller than some structural dimensions of the locking hook 40 , whereby the opening slot 24 may serve as a stop structure for the locking hook 40 , thereby reducing the probability of damage to the trigger structure 50 due to overpressure.

[0093] As shown in Figure 6, in some embodiments, a switch sealing structure 6 is provided at the fitting point of the switch base 51 and the plug-in section 11, thereby preventing water from entering the interior of the adapter device 100 from the fitting point of the switch base 51 and the plug-in section 11, thereby improving the waterproof performance of the adapter device 100 and thus improving the safety of the adapter device 100.

[0094] Optionally, the switch sealing structure 6 may be a sealing ring structure.

[0095] Optionally, the switch sealing structure 6 may be a glue-potting structure.

[0096] Optionally, the switch sealing structure 6 may be a flat gasket structure.

[0097] In some embodiments, as shown in Figures 1, 4, and 6, the adapter 100 further includes a pressure plate 7. The pressure plate 7 is sandwiched between the power socket housing 2 and the discharge gun housing 1 and is provided with a positioning slot 70 through which the terminal assembly 3 can pass. The positioning slot 70 on the pressure plate 7 can engage the terminal assembly 3, thereby positioning the terminal assembly 3, improving the convenience and accuracy of the installation of the terminal assembly 3 and enhancing the efficiency of the installation. Referring to Figure 9, the pressure plate 7 and the terminal assembly 3 are assembled and installed into the discharge gun housing 1, and then the power socket housing 2 is assembled. The end surface 25 of the power socket housing can support the pressure plate 7. When the power gun 1000 is inserted into the power gun cavity 20 and when the discharge gun housing 1 is inserted into the vehicle socket, the terminal assembly 3 is prevented from moving along the terminal assembly 3 along the axial direction, thereby reducing wear on the terminal assembly 3 and increasing the product life.

[0098] Optionally, referring to Figure 9 , the discharge gun housing 1 includes a discharge gun terminal insulating post 12, and the power socket housing 2 includes a power socket terminal insulating post 29. The terminal assembly 3 can be self-positioned by the terminal insulating posts. The provision of the discharge gun terminal insulating post 12 and the power socket terminal insulating post 29 can prevent leakage in the adapter 100, improving the safety of the adapter 100.

[0099] For example, the positioning groove 70 may be a full-circle annular groove, which has a simple structure and is easy to form.

[0100] For example, the positioning groove 70 can be a C-shaped notch groove, which includes a notch 1100. The terminal assembly 3 can be snapped into the C-shaped notch groove. The C-shaped notch groove is easy to install and improves assembly efficiency.

[0101] As shown in Figures 4 and 9, in some embodiments, the discharge gun housing 1 has a first hole for the terminal assembly 3 to pass through, and a first sealing structure a can be provided at the interface between the terminal assembly 3 and the discharge gun housing 1. The power socket housing 2 has a second hole for the terminal assembly 3 to pass through, and a second sealing structure b can be provided at the interface between the terminal assembly 3 and the power socket housing 2. The provision of the first sealing structure a and the second sealing structure b prevents water from passing through the first and second holes and from entering between the discharge gun housing 1 and the power socket housing 2, thereby preventing short circuits and improving product safety and quality.

[0102] Specifically, the terminal assembly 3 includes power terminals 33 and signal terminals 34. Power terminals 33 include L1, L2, L3, N, and PEL. L1, L2, and L3 are live wires, N is the neutral wire, and PE is the ground wire. Signal terminals 34 include CC and CP. There are seven first holes and seven second holes. A first sealing structure a is provided on the power terminals 33 at the discharge gun housing 1, while a second sealing structure b is provided on the power terminals 33 at the power socket housing 2.

[0103] For example, the first sealing structure a may be a sealing ring structure, such as an M-shaped sealing ring; or may be sealed by potting; or may be sealed by a flat gasket.

[0104] For example, the second sealing structure b may be a sealing ring structure, such as an O-ring; or may be sealed by potting glue; or may be sealed by a flat gasket.

[0105] As shown in Figures 1, 4, 8, and 9, in some embodiments, a discharge gun locking slot 14 is provided on the outer wall of the discharge gun housing 1. The discharge gun locking slot 14 can engage with the latch of the vehicle inlet of the first vehicle. The provision of the discharge gun locking slot 14 and its engagement with the latch of the vehicle inlet reduce the probability of disengagement and improve the stability and reliability of the connection between the adapter 100 and the vehicle inlet.

[0106] For example, the lock of the vehicle socket is a prior art lock, which may be an electronic lock or a mechanical lock.

[0107] As shown in FIG6 , in some embodiments, the discharge gun housing 1 may be provided with a hook structure 111, and the power socket housing 2 may be provided with a slot structure 27, and the hook structure 111 may be snapped into the slot structure 27; alternatively, the power socket housing 2 may be provided with a hook structure 111, and the discharge gun housing 1 may be provided with a slot structure 27, and the hook interface may be snapped into the slot structure 27. The provision of the hook structure 111 and the slot structure 27 not only allows for positioning of the connection between the discharge gun housing 1 and the power socket housing 2, thereby improving the assembly efficiency of the adapter 100, but also provides simplicity and high reliability of the hook structure 111 and the slot structure 27.

[0108] As shown in Figures 4 and 9, in some embodiments, the discharge gun housing 1 is connected to the power socket housing 2, and a third sealing structure C is provided at the connection point. The third sealing structure C prevents water from entering between the discharge gun housing 1 and the power socket housing 2 through the connection point.

[0109] Specifically, the third sealing structure c can be a sealing ring structure. The mating end surface of the discharge gun housing 1 is provided with a groove, and the mating end surface of the power socket housing 2 is provided with a groove. The sealing ring can be placed in the groove, and the sealing ring is squeezed and a seal is formed during the process of connecting and fixing the power socket housing 2 and the discharge gun housing 1.

[0110] Alternatively, the third sealing structure c may be sealed by glue potting; or alternatively, it may be sealed by a flat gasket.

[0111] As shown in Figures 1, 4, and 8, in some embodiments, the power socket housing 2 is provided with a drainage hole 28 that extends through the wall of the power socket housing 2. The power socket housing 2 is provided with a slot 21. During charging or discharging, rainwater can enter the gap between the power supply gun 1000 and the power socket housing 2 through the slot 21. At this time, the rainwater flows toward the lowest point and enters through the drainage hole 28, thereby achieving rainwater drainage and preventing liquid accumulation.

[0112] As shown in FIG10 , a vehicle 2000 according to an embodiment of the present application includes a switching device 100 according to an embodiment of the present application.

[0113] According to the vehicle 2000 of the embodiment of the present application, the above-mentioned adapter 100 can improve the safety of V2V, simplify the structure and reduce the cost.

[0114] In the description of this application, it should be understood that the terms "longitudinal", "transverse", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0115] In this application, unless otherwise expressly specified or limited, terms such as "mounted," "connected," "connect," and "fixed" should be understood broadly. For example, they may refer to fixed connections, detachable connections, or integration; mechanical connections, electrical connections, or communication; direct connections or indirect connections through an intermediate medium; and internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of these terms in this application based on specific circumstances.

[0116] In the description of this specification, the reference terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification.

[0117] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. A switching device (100) for realizing power transmission between vehicles, wherein: include: An adapter body, one end of the adapter body being a vehicle end for connecting to a first vehicle, and the other end being a socket end for connecting to a power supply gun (1000), wherein the power supply gun (1000) is used to connect to a second vehicle; and A locking assembly (4), wherein the locking assembly (4) is arranged on the adapter body, and when the power supply gun (1000) is connected to the socket end, the locking assembly (4) is used to achieve locking between the socket end and the power supply gun (1000).

2. The switching device (100) according to claim 1, wherein: The adapter body comprises a shell and a terminal assembly (3), wherein the terminal assembly (3) is arranged in the shell, and the terminal assembly (3) is used to realize the electrical connection between the vehicle end and the socket end.

3. The switching device (100) according to claim 2, wherein: The housing comprises: a discharge gun housing (1), the discharge gun housing (1) including the vehicle end; and A power supply socket housing (2), the power supply socket housing (2) comprising the socket end, the power supply socket housing (2) being connected to the discharge gun housing (1); The first connection end (31) of the terminal assembly (3) extends into the discharge gun housing (1), and the second connection end (32) of the terminal assembly (3) extends into the power socket housing (2); The locking assembly (4) is arranged on the discharge gun housing (1) and / or the power supply socket housing (2).

4. The switching device (100) according to claim 3, wherein: The locking assembly (4) comprises: a locking hook (40), wherein the locking hook (40) is mounted on the discharge gun housing (1) or the power supply socket housing (2), and when the power supply gun (1000) is connected to the power supply socket housing (2), the locking hook (40) is used to lock the power supply socket housing (2) and the power supply gun (1000).

5. The switching device (100) according to claim 4, wherein: The locking assembly (4) further comprises: a reset mechanism (42), wherein the reset mechanism (42) is used to apply a reset force to the lock hook (40) so as to move the lock hook (40) to lock the power socket housing (2) and the power supply gun (1000).

6. The switching device (100) according to claim 4 or 5, wherein: The power socket housing (2) has a power supply gun cavity (20) for connecting to the power supply gun (1000), and the power socket housing (2) is provided with a hole groove (21) communicating with the power supply gun cavity (20). The locking hook (40) includes a locking portion (401). When the locking assembly (4) locks the power socket housing (2) and the power supply gun (1000), the locking portion (401) passes through the hole groove (21) and extends into the power supply gun cavity (20); when the locking assembly (4) unlocks the power socket housing (2) and the power supply gun (1000), the locking portion (401) withdraws from the power supply gun cavity (20).

7. The switching device (100) according to claim 6, wherein: One end of the power supply gun cavity (20) facing away from the discharge gun housing (1) is open to form a power supply gun socket (23), and one end of the locking portion (401) facing the power supply gun socket (23) is provided with a chamfered structure (4011), the end of the chamfered structure (4011) being inclined in the direction of the discharge gun housing (1).

8. The switching device (100) according to claim 6 or 7, wherein: The terminal assembly (3) comprises a power terminal (33) and a signal terminal (34), and a control circuit is provided between the power terminal (33) and the signal terminal (34); The switching device (100) further comprises a switch assembly (5), wherein the switch assembly (5) is arranged on the discharge gun housing (1), the switch assembly (5) is arranged in the control circuit, and the switch assembly (5) has a first working state and a second working state, and when the switch assembly (5) switches from the first working state to the second working state, the state of the control circuit changes to trigger the automatic power off of the first vehicle.

9. The switching device (100) according to claim 8, wherein: The switch assembly (5) comprises a trigger structure (50), and the lock hook (40) comprises a pressing portion (403). When the pressing portion (403) switches between pressing against the trigger structure (50) and separating from the trigger structure (50), the switch assembly (5) switches from the first working state to the second working state.

10. The switching device (100) according to claim 9, wherein: The lock hook (40) comprises a lock hook body (402), the lock hook body (402) is rotatably mounted on the power socket housing (2) via a fixed pin shaft (41), the locking portion (401) and the pressing portion (403) are both connected to the lock hook body (402), and the locking portion (401) and the pressing portion (403) are separated.

11. The switching device (100) according to claim 9 or 10, wherein: One of the discharge gun housing (1) and the power socket housing (2) has a plug section (11), and the other has a sleeve section (26). The plug section (11) is sleeved in the sleeve section (26). The plug section (11) is provided with a switch limiting structure (112). The switch assembly (5) comprises a switch base (51). The switch base (51) is limited between the switch limiting structure (112) and the sleeve section (26). The sleeve section (26) is provided with an opening groove (24). The width of the switch base (51) is smaller than the groove width of the opening groove (24). The trigger structure (50) is arranged on the switch base (51). The trigger structure (50) is located in the opening groove (24). The pressing portion (403) is suitable for pressing against the trigger structure (50) through the opening groove (24).

12. The switching device (100) according to claim 11, wherein: A switch sealing structure (6) is provided at the matching position between the switch base (51) and the plug-in section (11).

13. The switching device (100) according to any one of claims 3 to 12, wherein: The adapter device (100) further comprises a pressing plate (7), wherein the pressing plate (7) is sandwiched between the power socket housing (2) and the discharge gun housing (1), and a positioning groove (70) is provided on the pressing plate (7) for the terminal assembly (3) to pass through.

14. The switching device (100) according to any one of claims 3 to 13, wherein: The discharge gun housing (1) is provided with a first hole for the terminal assembly (3) to pass through, and a first sealing structure (a) is provided at a fitting position between the terminal assembly (3) and the discharge gun housing (1); the power socket housing (2) is provided with a second hole for the terminal assembly (3) to pass through, and a second sealing structure (b) is provided at a fitting position between the terminal assembly (3) and the power socket housing (2).

15. The switching device (100) according to any one of claims 3 to 14, wherein: A discharge gun locking groove (14) for locking with the lock of the first vehicle is provided on the outer peripheral wall of the discharge gun housing (1).

16. The switching device (100) according to claim 3, wherein: One of the discharge gun housing (1) and the power socket housing (2) is provided with a hook structure (111), and the other is provided with a slot structure (27) suitable for being engaged with the hook structure (111).

17. The switching device (100) according to any one of claims 3 to 16, wherein: A third sealing structure (c) is provided at the connection point between the discharge gun housing (1) and the power supply socket housing (2).

18. The switching device (100) according to any one of claims 3 to 17, wherein: The power socket housing (2) is provided with a drainage hole (28) penetrating the housing wall of the power socket housing (2).

19. A vehicle (2000), wherein: The invention comprises a switching device (100) according to any one of claims 1 to 18.

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