Power supply socket and alternating current charging pile

Abstract

The utility model discloses a power supply socket and an AC charging pile, the power supply socket comprises a socket body, a protective cover plate and a locking mechanism, and the socket body is provided with an external output port; the protective cover plate is arranged on the socket body and is used for covering the external output port in an openable and closable manner; the locking mechanism is used for locking and unlocking the protective cover plate in the covering state, and the locking mechanism locks the protective cover plate in the covering state when the alternating current charging pile is in a fault state, so that the external output port cannot be exposed. According to the power supply socket, a user can be prevented from opening the protective cover plate in a fault state, and the occurrence of an electric shock accident caused by the fact that the protective cover plate is still opened when an alternating current charging pile is in an abnormal state and a battery cell binding post of an external output port of the power supply socket is easily touched is effectively avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of charging piles, and more specifically, to a power supply socket and an AC charging pile. Background Art

[0002] AC charging piles are important supporting infrastructure necessary for the development of electric vehicles. Generally speaking, the switches used in the main circuit of AC charging piles are relays, which have weak breaking capacity and are prone to adhesion. When the main circuit relay of the AC charging pile is stuck or cannot be controlled to break the circuit, if the protective cover of the power supply socket of the AC charging pile is opened, the power supply socket of the AC charging pile is extremely prone to electric shock accidents because the battery terminal of the external output port of the power supply socket of the AC charging pile is directly connected to the power grid.

[0003] In summary, how to solve the problem that electric shock accidents are prone to occur during the use of the power socket of the AC charging pile has become a technical problem that needs to be solved urgently by technical personnel in this field. Utility Model Content

[0004] In view of this, the utility model provides a power supply socket and an AC charging pile to solve the problem that electric shock accidents are prone to occur during the use of the power supply socket of the AC charging pile.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A power supply socket, applied to an AC charging pile, comprising:

[0007] The socket body has an external output port;

[0008] A protective cover plate, disposed on the socket body and used to cover the external output port in an openable and closable manner;

[0009] The locking mechanism is used to lock and unlock the protective cover in the covered state, wherein when the AC charging pile is in a fault state, the locking mechanism locks the protective cover in the covered state so that the external output port cannot be exposed.

[0010] Optionally, the locking mechanism comprises:

[0011] A locking slot, arranged on the protective cover;

[0012] A locking member, slidably disposed in the socket body;

[0013] A driving mechanism is disposed on the inner side of the socket body, and when the protective cover is in the covering state, the driving mechanism is used to drive the locking member to switch between sliding into the locking slot and sliding out of the locking slot;

[0014] Wherein, when the covered protective cover is in a locked state, the locking member cooperates with the locking slot, and when the covered protective cover is in an unlocked state, the locking member disengages from the locking slot.

[0015] Optionally, the driving mechanism comprises:

[0016] a connecting rod having a first end and a second end, wherein the first end is connected to the locking member;

[0017] A linear telescopic mechanism, wherein a telescopic end is connected to the second end, and the telescopic movement of the telescopic end drives the connecting rod to move, thereby driving the locking member to slide.

[0018] Optionally, the telescopic direction of the telescopic end is perpendicular to the sliding direction of the locking member.

[0019] Optionally, the linear telescopic mechanism comprises:

[0020] A spring guide rail, fixedly arranged inside the socket body;

[0021] a telescopic spring, sleeved on the spring guide rail, with one end of the telescopic spring fixedly connected to the spring guide rail, and the other end of the telescopic spring connected to the second end, wherein when the telescopic spring is in an initial position, the locking member is disengaged from the locking slot;

[0022] The driver is used for driving the telescopic spring to extend and retract, so that the locking member slides into the locking slot.

[0023] Optionally, the driver includes a driving motor and a traction rope, one end of the traction rope is fixedly connected to the other end of the telescopic spring, and the other end of the traction rope is wound around an output end of the driving motor.

[0024] Optionally, it also includes a control circuit and a first detection unit and a second detection unit connected to the control circuit, the first detection unit is used to detect whether the protective cover is in a covered state, and the second detection unit is used to detect whether the AC charging pile is in a faulty state. When the first detection unit detects that the protective cover is in a covered state and the second detection unit detects that the AC charging pile is in a faulty state, the control circuit is turned on to control the locking mechanism to perform a locking operation.

[0025] Optionally, the first detection unit is configured as at least one travel switch arranged on the socket body, and when the protective cover is in a covering state, the travel switch is closed, and when the protective cover is out of the covering state, the travel switch is opened.

[0026] Optionally, the protective cover is disposed on the socket body in a flip-opening and closing manner, and a damper is disposed between the protective cover and the socket body.

[0027] Optionally, the second detection unit is used to detect the main circuit relay of the AC charging pile, wherein, when the main circuit relay is abnormal, the AC charging pile is in a fault state.

[0028] Compared with the background technology, the power socket is applied to the AC charging pile, and includes a socket body, a protective cover and a locking mechanism, wherein the socket body has an external output port; the protective cover is arranged on the socket body, and is used to cover the external output port in an openable and closable manner; the locking mechanism is used to lock and unlock the protective cover in the covered state, and when the AC charging pile is in a fault state, the locking mechanism locks the protective cover in the covered state, so that the external output port cannot be exposed. In the actual application process of the power socket, even if the main circuit relay of the AC charging pile is stuck or cannot be controlled to be disconnected, the protective cover in the covered state can be locked by the locking mechanism, thereby preventing the user from opening the protective cover in the fault state, effectively avoiding the occurrence of electric shock accidents caused by the protective cover being opened when the AC charging pile is in an abnormal state and easily touching the battery terminal of the external output port of the power socket.

[0029] In addition, the utility model also provides an AC charging pile, including a power supply socket for connecting a charging gun, wherein the power supply socket is the power supply socket described in any of the above schemes. Since the power supply socket has the above technical effects, the AC charging pile having the power supply socket should also have corresponding technical effects, which will not be described in detail here. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0031] Figure 1 A schematic diagram of the structure of the protective cover of the power socket provided in an embodiment of the utility model in a covered state and locked by a locking mechanism;

[0032] Figure 2 A schematic structural diagram of a first detection unit provided on a socket body when the protective cover of the power socket provided in an embodiment of the utility model is in an open state;

[0033] Figure 3 The first detection unit provided in the embodiment of the utility model adopts a circuit schematic diagram of two travel switches sharing a cathode;

[0034] Figure 4 A schematic diagram of the structure of the locking member of the locking mechanism in a retracted state before the protective cover plate on the power socket provided by the embodiment of the utility model is closed;

[0035] Figure 5 A schematic diagram of the structure in which the protective cover of the power socket provided by the embodiment of the utility model is in a closed state and the locking member of the locking mechanism slides into the locking slot;

[0036] Figure 6 A schematic diagram of the structure of the protective cover of the power socket provided by the embodiment of the utility model in the covered state, with the locking member of the locking mechanism sliding out of the locking slot;

[0037] Figure 7 A control schematic diagram of a control circuit of a locking assembly provided in an embodiment of the utility model.

[0038] in, Figure 1-Figure 6 middle:

[0039] Socket body 1, external output port 10;

[0040] Protective cover 2;

[0041] Locking mechanism 3, locking slot 31, locking member 32, driving mechanism 33, connecting rod 331, linear telescopic mechanism 332, spring guide rail 332a, telescopic spring 332b, driver 332c, driving motor 332c1, traction rope 332c2;

[0042] Damper 4;

[0043] The first detection unit 5 and the travel switch 51 . DETAILED DESCRIPTION

[0044] The core of the utility model is to provide a power supply socket and an AC charging pile to solve the problem that electric shock accidents are prone to occur during the use of the power supply socket of the AC charging pile.

[0045] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0046] The utility model provides a power supply socket, which is applied to an AC charging pile, wherein the power supply socket is mainly used to connect a charging gun to the AC charging pile. One or more power supply sockets can be designed on the AC charging pile. When there are multiple power supply sockets, the access of multiple charging guns can be met.

[0047] Specifically, refer to Figure 1-Figure 7 As shown, the power supply socket may include a socket body 1, a protective cover plate 2 and a locking mechanism 3, wherein the socket body 1 has an external output port 10, and the battery terminal of the external output port 10 is directly connected to the power grid, so that when the interface of the corresponding cable end of the charging gun is inserted into the external output port 10, the power of the power grid can be supplied to the charging gun through the external output port 10, and the socket body 1 can be designed to be an integrated structure with the pile body of the AC charging pile, or it can be designed to be a split and detachable connection structure. The present invention preferably adopts a split and detachable connection structure. For example, after the electrical connection, a mechanical connection is achieved by a snap-on method, a fastener connection method, etc. This detachable connection method is more convenient for maintenance and replacement of the power supply socket; the protective cover plate 2 is arranged on the socket body 1, and is used to cover the external output port 10 in an openable and closable manner. The main function is to form a certain protection for the external output port 10, on the one hand to prevent contact, on the other hand to prevent foreign objects from clogging or affecting the normal operation of the external output port 10. Generally speaking, the protective cover 2 has an initial movement tendency to remain in the covered state, that is, in the absence of external force, the protective cover 2 has a pre-tightening force to maintain it in the covered state. For example, when one end side of the protective cover 2 is hingedly arranged on the socket body 1 by a hinge shaft, the protective cover 2 can be designed with elastic parts such as torsion springs to have an elastic force to maintain it in the covered state; the locking mechanism 3 is used to lock and unlock the protective cover 2 in the covered state, and when the AC charging pile is in a fault state, the protective cover 2 in the covered state is locked by the locking mechanism 3, that is, the protective cover 2 is in a state that cannot be opened, thereby preventing the external output port from being exposed.

[0048] In actual use, even if the main circuit relay of the AC charging pile is stuck or cannot be controlled to be disconnected, the protective cover 2 in the covered state can be locked by the locking mechanism 3, thereby preventing the user from opening the protective cover 2 in the fault state, effectively avoiding the occurrence of electric shock accidents caused by the protective cover 2 being opened when the AC charging pile is in an abnormal state and easily touching the battery terminal of the external output port 10 of the power socket.

[0049] In some specific embodiments, the locking mechanism 3 may specifically include a locking slot 31, a locking member 32 and a driving mechanism 33, wherein the locking slot 31 is provided in the protective cover 2; the locking member 32 is slidably provided in the socket body 1; the driving mechanism 33 is provided on the inner side of the socket body 1, and when the protective cover 2 is in the covered state, the driving mechanism 33 is used to drive the locking member 32 to switch between sliding into the locking slot 31 and sliding out of the locking slot 31, wherein when the covered protective cover 2 is in the locked state, the locking member 32 cooperates with the locking slot 31, and when the covered protective cover 2 is in the unlocked state, the locking member 32 is disengaged from the locking slot 31. Specifically, an installation cavity for installing the locking member 32 and the driving mechanism 33 may be arranged in the socket body 1. The locking member 32 is driven by the driving mechanism 33 to switch between sliding into the locking slot 31 and sliding out of the locking slot 31, making the locking and unlocking operations more convenient and facilitating intelligent control. Of course, it is understandable that in actual application, in addition to being driven by the driving mechanism, the locking mechanism 3 can also be designed to be manually driven. For example, when the AC charging pile is in a fault state, a reminder or warning message can be sent to the relevant staff, so that the user or staff can lock the protective cover 2 in advance by manual driving to prevent the user from opening the protective cover and getting an electric shock.

[0050] In a further implementation scheme, the driving mechanism 33 may specifically include a connecting rod 331 and a linear telescopic mechanism 332, wherein the connecting rod 331 has a first end and a second end, the first end being connected to the locking member 32; the telescopic end of the linear telescopic mechanism 332 is connected to the second end, so that the connecting rod 331 can be driven to move by the telescopic end to drive the locking member 32 to slide, and then the locking member 32 can achieve locking and unlocking operations. By designing the driving mechanism 33 as the connecting rod 331 and the linear telescopic mechanism 332, the arrangement of the driving mechanism 33 is more flexible and convenient, and the structure is avoided from being too crowded. It should be noted that the first end of the connecting rod 331 can be designed to be hingedly connected to the locking member 32, and the telescopic end of the linear telescopic mechanism 332 is hingedly connected to the second end of the connecting rod 331. At this time, the linear telescopic mechanism 332 can be designed to be arranged at an angle with the sliding direction of the locking member 32, and the linear telescopic mechanism 332 drives the connecting rod 331 to swing through the telescopic movement to drive the locking member 32 to slide. For example, the telescopic direction of the telescopic end of the linear telescopic mechanism 332 can be specifically designed to be arranged perpendicularly to the sliding direction of the locking member 32. By designing this structural form, the arrangement of the linear telescopic mechanism 332 is more convenient, and the space occupied by the linear telescopic mechanism 332 in the thickness direction of the power socket can be reduced as much as possible, which is helpful to reduce the thickness of the power socket. Of course, the telescopic direction of the telescopic end of the linear telescopic mechanism 332 can also be designed to be arranged at an acute angle to the sliding direction of the locking member 32. In addition, the telescopic direction of the telescopic end of the linear telescopic mechanism 332 can also be designed to be the same as the sliding direction of the locking member 32. At this time, at least one of the connection between the first end of the connecting rod 331 and the locking member 32 and the connection between the telescopic end of the linear telescopic mechanism 332 and the second end of the connecting rod 331 is a fixed connection. In actual application, the arrangement can be selected according to actual needs, and no more specific restrictions are made here.

[0051] In some other specific embodiments, the above-mentioned linear telescopic mechanism 332 may specifically include a spring guide rail 332a, a telescopic spring 332b and a driver 332c, wherein the spring guide rail 332a is fixedly arranged inside the socket body 1; the telescopic spring 332b is sleeved on the spring guide rail 332a, and one end of the telescopic spring 332b is fixed relative to the spring guide rail 332a, and the other end of the telescopic spring 332b is connected to the second end of the connecting rod 331, and when the telescopic spring 332b is in the initial position, the locking member 32 is disengaged from the locking slot 31; the driver 332c is used to drive the telescopic spring 332b to perform a telescopic action so that the locking member 32 slides into the locking slot 31. By designing the linear telescopic mechanism 332 into the above-mentioned structural form, since one end of the telescopic spring 332b is fixed relative to the spring guide rail 332a, and the other end is connected to the second end of the connecting rod 331, then under the elastic action of the telescopic spring 332b itself, the locking member 32 can automatically be in a position disengaged from the locking slot 31, that is, in an unlocked state, and the protective cover 2 can be opened and closed normally. The driver 332c does not need to consider the unlocking drive design. Only when the protective cover 2 is in the covered state and the AC charging pile is in a fault state, the driver 332c needs to perform the driving action, which reduces the drive design requirements of the driver 332c. Of course, it can be understood that the structural form of the above-mentioned linear telescopic mechanism 332 is only a preferred example of the embodiment of the utility model. In actual application, it can also be designed into other linear telescopic mechanisms, such as a linear electric push rod, etc., which are not further limited here.

[0052] It should be noted that the telescopic spring 332b can be designed as a compression spring or a tension spring, as long as it can be ensured that the locking member 32 is disengaged from the locking slot 31 when the telescopic end of the telescopic spring 332b is in the initial position.

[0053] In a further embodiment, the driver 332c may specifically include a driving motor 332c1 and a traction rope 332c2, one end of the traction rope 332c2 is fixedly connected to the other end of the telescopic spring 332b, and the other end of the traction rope 332c2 is wound around the output end of the driving motor 332c1. By designing the driver 332c into this structural form, the drive of the telescopic end is more convenient to control. For example, when the telescopic spring 332b is a compression spring, the driving motor 332c1 can drive the telescopic end of the telescopic spring 332b to compress by hoisting the traction rope 332c2, and when the telescopic spring 332b is a tension spring, the driving motor 332c1 can drive the telescopic end of the telescopic spring 332b to stretch by hoisting the traction rope 332c2. Of course, it is understandable that the design of the driver 332c into the above-mentioned driving motor 332c1 and the traction rope 332c2 is only an example of the embodiment of the utility model. In actual application, it can also be designed into other structural forms of the driver 332c, such as the electric push-pull rod.

[0054] In some more specific embodiments, the power socket may further include a control circuit and a first detection unit 5 and a second detection unit connected to the control circuit, wherein the first detection unit 5 is used to detect whether the protective cover 2 is in a covered state, and the second detection unit is used to detect whether the AC charging pile is in a fault state. When the first detection unit 5 detects that the protective cover 2 is in a covered state and the second detection unit detects that the AC charging pile is in a fault state, the control circuit is turned on to control the locking mechanism 3 to perform a locking operation. By designing the locking component into the above-mentioned structural form, when the AC charging pile is in a fault state, the locking component can automatically perform a locking operation through the control circuit, eliminating the intermediate human operation link, making it more intelligent and better able to reduce the risk of electric shock.

[0055] In some specific implementation schemes, the first detection unit 5 can be specifically configured as at least one travel switch 51 provided on the socket body 1. When the protective cover 2 is in the covering state, the travel switch 51 is closed, and when the protective cover 2 is out of the covering state, the travel switch 51 is disconnected. Among them, the number of travel switches 51 can be arranged according to actual needs, and no more specific restrictions are made here. For example, the number of travel switches 51 is multiple, and two, three, four, five, etc. can be arranged on both sides of the end of the protective cover 2 away from the flip. It can be arranged in odd numbers or even numbers, and when the number is even, it is preferably designed to be arranged symmetrically along the symmetry plane perpendicular to the flip axis. By designing the first detection unit 5 as the above-mentioned travel switch 51, the structure of the first detection unit 5 is simpler and more convenient to arrange. Of course, it can be understood that the design of the above-mentioned travel switch 51 is only an example of the structure of the first detection unit 5 in the embodiment of the utility model. In actual application, it can also be designed as other detection devices, such as distance sensors.

[0056] In a further implementation scheme, the protective cover plate 2 can be specifically designed to be set on the socket body 1 in a flipping opening and closing manner, and a damper 4 is also provided between the protective cover plate 2 and the socket body 1, and the damper 4 is used to delay the flipping opening and closing action of the protective cover plate 2 to reduce the mechanical impact on the travel switch 51. By designing the damper 4, the mechanical impact suffered by the travel switch 51 is greatly reduced, which helps to extend the service life of the travel switch 51. Among them, the damper 4 can be selected to be designed at a position corresponding to the flip axis between the protective cover plate 2 and the socket body 1, and its specific structural form can be but is not limited to a damping guide rail, a damping material layer and other structural forms.

[0057] It should be noted that the above-mentioned travel switch 51 can be specifically configured as a proximity switch, a micro switch, or a photoelectric tube. In actual application, the configuration can be selected according to actual needs, and no more specific restrictions are made here. Taking the micro switch as an example, in order to ensure the stability of the micro switch when the protective cover 2 is in the covered state, the travel margin of the micro switch is preferably 0.5mm-2mm. When the travel switch 51 adopts a photoelectric tube, since the protective cover 2 and the photoelectric tube cannot contact, the corresponding safety distance is generally preferably 1mm-5mm. Among them, the travel margin of the micro switch refers to the additional travel distance between the switch from the initial position to the contact action (closed or open) position. This margin allows the switch to maintain the correct action of the contact when it is affected by certain mechanical deviations, vibrations or misoperation in actual applications. The travel margin of the micro switch is usually achieved by designing the mechanical structure of the switch. For example, a certain gap or pre-compression amount is set in the contact mechanism of the switch so that when the switch is subjected to external force, the contact mechanism can first pass through a stroke and then trigger the action of the contact. This can ensure the stability and reliability of the switch in practical applications. For example, the stroke of the micro switch is L, and after the micro switch contacts the protective cover 2, the corresponding position of the micro switch is L0, and the stroke margin is X, where X=L-L0.

[0058] In some other specific implementation schemes, the second detection unit can specifically detect whether the AC charging pile is in a fault state by detecting whether the main circuit relay of the AC charging pile is in an abnormal state (after the main circuit relay open circuit instruction is issued, the relay is still in a short circuit state as an abnormal state, wherein, it can be determined whether the outgoing voltage of the main circuit relay is ≥36V, if it is and the signal lasts for more than 100ms, the instruction sent to the main circuit relay by the controller corresponding to the main circuit relay is an open circuit), if the main circuit relay is in an abnormal state, the AC charging pile is in a fault state; wherein, the second detection unit is configured as an auxiliary contact or contact state detection circuit set in the main circuit relay. The second detection unit can refresh and query the electric shock state flag of the main circuit relay at regular intervals, and the task cycle can be 10ms. The main electric shock state of the main circuit relay can select a relay with auxiliary electric shock, and the auxiliary electric shock signal or the high and low levels are obtained by AD sampling, for example, the high level is 3V or 5V, and the low level is 0V. If the state of the main circuit relay detected by the second detection unit is abnormal or sticky, the control circuit sends an instruction to the locking component to lock the protective cover 2 of the power socket.

[0059] In addition, the utility model also provides an AC charging pile, including a power supply socket for connecting a charging gun, and the power supply socket is the power supply socket described in any of the above schemes. Since the power supply socket has the aforementioned technical effects, the AC charging pile having the power supply socket should also have corresponding technical effects, which will not be repeated here.

[0060] It should be noted that the various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0061] As shown in this application and claims, unless the context clearly indicates an exception, the words "a", "an", "a kind" and / or "the" do not refer to the singular, but also include the plural. Generally speaking, the terms "include" and "comprise" only indicate the inclusion of clearly identified steps and elements, and these steps and elements do not constitute an exclusive list. The method or device may also include other steps or elements. The elements defined by the sentence "includes a..." do not exclude the existence of other identical elements in the process, method, commodity or device that includes the elements.

[0062] In the description of the embodiments of the present application, unless otherwise specified, " / " means or, for example, A / B can mean A or B; "and / or" in this article is only a description of the association relationship of associated objects, indicating that there can be three relationships, for example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone. In addition, in the description of the embodiments of the present application, "multiple" means two or more than two.

[0063] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features.

[0064] This article uses specific examples to illustrate the principles and implementation methods of the utility model. The above examples are only used to help understand the core idea of ​​the utility model. It should be pointed out that for ordinary technicians in this technical field, without departing from the principle of the utility model, the utility model can also be improved and modified, and these improvements and modifications also fall within the scope of protection of the claims of the utility model.

Claims

1. A power supply socket, applied to an AC charging pile, characterized in that: include: A socket body (1) having an external output port (10); A protective cover plate (2) is arranged on the socket body (1) and is used to cover the external output port (10) in an openable and closable manner; A locking mechanism (3) is used to lock and unlock the protective cover plate (2) in a covered state, wherein when the AC charging pile is in a fault state, the locking mechanism (3) locks the protective cover plate (2) in a covered state so that the external output port (10) cannot be exposed.

2. The power socket according to claim 1, characterized in that: The locking mechanism (3) comprises: A locking slot (31) is arranged on the protective cover plate (2); A locking member (32) slidably disposed in the socket body (1); A driving mechanism (33) is arranged on the inner side of the socket body (1), and when the protective cover plate (2) is in a covered state, the driving mechanism (33) is used to drive the locking member (32) to switch between sliding into the locking slot (31) and sliding out of the locking slot (31); Wherein, when the covered protective cover (2) is in a locked state, the locking member (32) cooperates with the locking slot (31), and when the covered protective cover (2) is in an unlocked state, the locking member (32) disengages from the locking slot (31).

3. The power socket according to claim 2, characterized in that: The driving mechanism (33) comprises: A connecting rod (331) having a first end and a second end, wherein the first end is connected to the locking member (32); A linear telescopic mechanism (332) has a telescopic end connected to the second end, and the telescopic movement of the telescopic end drives the connecting rod (331) to move, thereby driving the locking member (32) to slide.

4. The power socket according to claim 3, characterized in that: The telescopic direction of the telescopic end is perpendicular to the sliding direction of the locking member (32).

5. The power socket according to claim 3, characterized in that: The linear telescopic mechanism (332) comprises: A spring guide rail (332a) fixedly arranged inside the socket body (1); a telescopic spring (332b) sleeved on the spring guide rail (332a), one end of the telescopic spring (332b) being fixedly connected to the spring guide rail (332a), and the other end of the telescopic spring (332b) being connected to the second end, wherein when the telescopic spring (332b) is in an initial position, the locking member (32) is disengaged from the locking slot (31); The driver (332c) is used for driving the telescopic spring to expand and contract, so that the locking member (32) slides into the locking slot (31).

6. The power socket according to claim 5, characterized in that: The driver (332c) comprises a driving motor (332c1) and a traction rope (332c2), one end of the traction rope (332c2) is fixedly connected to the other end of the telescopic spring, and the other end of the traction rope (332c2) is wound around the output end of the driving motor (332c1).

7. The power socket according to claim 1, characterized in that: The device also comprises a control circuit and a first detection unit (5) and a second detection unit connected to the control circuit, wherein the first detection unit (5) is used to detect whether the protective cover (2) is in a covered state, and the second detection unit is used to detect whether the AC charging pile is in a fault state. When the first detection unit (5) detects that the protective cover (2) is in a covered state and the second detection unit detects that the AC charging pile is in a fault state, the control circuit is turned on to control the locking mechanism (3) to perform a locking operation.

8. The power socket according to claim 7, characterized in that: The first detection unit (5) is configured as at least one travel switch (51) arranged on the socket body (1); when the protective cover (2) is in a covered state, the travel switch (51) is closed; when the protective cover (2) is out of the covered state, the travel switch (51) is opened.

9. The power socket according to claim 8, characterized in that: The protective cover plate (2) is arranged on the socket body (1) in a flip-opening and closing manner, and a damper (4) is arranged between the protective cover plate (2) and the socket body (1).

10. The power socket according to claim 7, characterized in that: The second detection unit is used to detect the main circuit relay of the AC charging pile, wherein when the main circuit relay is abnormal, the AC charging pile is in a fault state.

11. An AC charging pile, comprising a power supply socket for connecting a charging gun, characterized in that: The power supply socket is the power supply socket according to any one of claims 1 to 10.

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