A municipal street lamp electric vehicle charging device and charging system

Abstract

This invention discloses a municipal street light electric vehicle charging device and system. The municipal street light electric vehicle charging device includes a street light assembly, a charging device, and an energy storage device. The street light assembly includes a street light pole with a mounting cavity and a lamp head connected to the street light pole. The lamp head is connected to a power supply line, which passes through the street light pole. The charging device is fixedly connected to the street light pole and includes a charging compartment and a charging connector. The charging connector is electrically connected to the charging compartment. The energy storage device is at least partially disposed inside the mounting cavity and is connected to the power supply line via an input control module. The charging device is electrically connected to the energy storage device and the power supply line via an output control module. The electric vehicle is charged through the charging device, and the energy storage device stores electrical energy through the power supply line. The electric vehicle can be charged directly through the power supply line, or the energy can be stored in the energy storage device before charging the electric vehicle.

Description

Technical Field

[0001] This invention relates to the field of electric vehicle charging device technology, and in particular to a municipal street light electric vehicle charging device and charging system. Background Technology

[0002] With the rapid development of the new energy industry and the continuous improvement of technology, the safety and driving range of electric vehicles are constantly increasing. Furthermore, the convenience of electric vehicles perfectly suits urban travel needs, leading to a continuous increase in their numbers in recent years. Many residential communities lack electric vehicle charging stations, or the number of charging stations is insufficient to meet demand. Therefore, it is necessary to rationally utilize the large number of municipal streetlights and their lack of daytime lighting requirements to design a streetlight charging station to meet the charging needs of electric vehicles, given the current absence of such charging devices. Summary of the Invention

[0003] To address the current lack of charging devices for electric vehicles illuminating municipal streetlights, this invention provides a charging device and system for electric vehicles illuminating municipal streetlights.

[0004] This application provides a municipal street light electric vehicle charging device, comprising a street light assembly, a charging device, and an energy storage device. The street light assembly includes a street light pole with a mounting cavity and a lamp head connected to the street light pole. The lamp head is connected to a power supply line, which passes through the street light pole. The charging device is fixedly connected to the street light pole and includes a charging compartment and a charging connector, with the charging connector electrically connected to the charging compartment. The energy storage device is at least partially built into the mounting cavity and is connected to the power supply line via an input control module. The charging device is electrically connected to the energy storage device and the power supply line via an output control module.

[0005] In some embodiments, the municipal street light electric vehicle charging device further includes a base, on which a first connector and a second connector are provided. The first connector is used to connect to the street light device, and the second connector is used to connect to the energy storage device. Both the first connector and the second connector are electrically connected to the power supply line.

[0006] In some embodiments, both the charging device and the energy storage device are mounted on the street light device and are detachably connected to the street light device.

[0007] In some embodiments, the energy storage device and the power supply line are electrically connected to the street light device via a switching module.

[0008] In some embodiments, the energy storage device is provided with a connection cavity, and a first conductive element is disposed inside the connection cavity, the first conductive element protruding from the inner wall of the connection cavity;

[0009] The second connector includes a base, a movable member, an elastic member, and a second conductive member. The movable member is movably connected to the base. One end of the elastic member abuts against the movable member, and the other end abuts against the base. The second conductive member is used to connect to an external power grid and is disposed opposite to the movable member.

[0010] The first conductive element can be selectively connected to the movable element. When the movable element moves to a first predetermined position, the movable element is disconnected from the first conductive element. When the movable element moves to a second predetermined position, the movable element abuts against the first conductive element.

[0011] In some embodiments, at least one first sealing ring is provided between the side of the second connector and the side of the connecting cavity.

[0012] In some embodiments, the charging device further includes a display device electrically connected to the energy storage device;

[0013] The display device can display multiple colors to indicate the power of the energy storage device, and the display device is installed on the street lamp pole or the charging device.

[0014] The charging system provided in this application includes multiple municipal street light electric vehicle charging devices arranged at intervals. The energy storage devices of the multiple municipal street light electric vehicle charging devices are connected in parallel through a parallel connection line, and the parallel connection line is provided with a parallel switching module.

[0015] In some embodiments, the charging system further includes a control device connected to a plurality of the energy storage devices, the control device being used to adjust the electrical connection status of the plurality of municipal street light electric vehicle charging devices.

[0016] In some embodiments, the control device controls the charging and discharging of the energy storage device.

[0017] Compared with the prior art, the electric vehicle charging device and charging system for municipal streetlights provided by this invention have the following advantages: The electric vehicle charging device for municipal streetlights provided by this application includes a streetlight device, a charging device, and an energy storage device. The streetlight device is used for road lighting and includes a streetlight pole with a mounting cavity and a lamp head connected to the streetlight pole. The lamp head is connected to a power supply line, which passes through the streetlight pole to conduct electrical energy to the lamp head. The charging device is fixedly connected to the streetlight pole and includes a charging compartment for controlling electric vehicle charging and a charging connector for connecting to the electric vehicle charging interface. The charging connector is electrically connected to the charging compartment. The energy storage device is partially disposed inside the mounting cavity and is connected to the power supply line through an input control module. The charging device is electrically connected to the energy storage device and the power supply line through an output control module. With the above design, electric vehicles can be charged through the charging device, and the energy storage device can store electrical energy through the power supply line. The charging device is connected to both the power supply line and the energy storage device, so that the municipal street light electric vehicle charging device can not only charge electric vehicles directly through the power supply line, but also store electrical energy through the energy storage device and then charge the electric vehicles. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of one embodiment of this application;

[0019] Figure 2 This is a disassembled structural diagram of one embodiment of this application;

[0020] Figure 3 This is another disassembled structural diagram of an embodiment of this application;

[0021] Figure 4 This is a partial structural cross-sectional view of an embodiment of this application;

[0022] Figure 5 yes Figure 4 Enlarged schematic diagram of the structure at point A in the middle;

[0023] Figure 6 This is a partial structural breakdown diagram of one embodiment of this application;

[0024] Figure 7 yes Figure 6 Enlarged schematic diagram of the structure at point B.

[0025] 100. Streetlight device; 11. Streetlight pole; 12. Lamp head; 200. Charging device; 21. Display device; 22. Charging compartment; 23. Charging connector; 300. Energy storage device; 31. First conductive element; 01. Connecting cavity; 400. Base; 41. Second connector; 411. Seat body; 412. Movable element; 413. Elastic element; 414. Second conductive element; 415. Insulating element; 500. First sealing ring. Detailed Implementation

[0026] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be described in detail below with reference to the accompanying drawings. The description in this part is only exemplary and explanatory, and should not be used to limit the scope of protection of the present invention in any way.

[0027] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0028] It should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of the invention is in use. They are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0029] Furthermore, terms such as "horizontal," "vertical," and "sag" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," not that the structure must be completely horizontal, but can be slightly tilted.

[0030] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

[0031] The present invention will now be described in further detail with reference to the accompanying drawings.

[0032] like Figure 1The illustrated municipal street light electric vehicle charging device includes a street light unit 100, a charging unit 200, and an energy storage unit 300. The street light unit 100, used for road lighting, includes a street light pole 11 with a mounting cavity and a lamp head 12 connected to the street light pole 11. The lamp head 12 is connected to a power supply line, which passes through the street light pole 11 to conduct electrical energy to the lamp head 12. The charging unit 200 is fixedly connected to the street light pole 11 and includes a charging compartment 22 for controlling electric vehicle charging and a charging connector 23 for connecting to the electric vehicle charging interface. The charging connector 23 is electrically connected to the charging compartment 22. The energy storage unit 300 is partially disposed inside the mounting cavity. The energy storage unit 300 is connected to the power supply line via an input control module (an electronic module that controls the charging of the energy storage unit 300). The charging unit 200 is electrically connected to the energy storage unit 300 and the power supply line via an output control module (an electronic module that controls the discharging of the energy storage unit 300). With the above design, electric vehicles can be charged through the charging device 200, and the energy storage device 300 can store electrical energy through the power supply line. The charging device 200 is connected to both the power supply line and the energy storage device 300, so that the municipal street light electric vehicle charging device can not only charge electric vehicles directly through the power supply line, but also store electrical energy through the energy storage device 300 and then charge the electric vehicles.

[0033] In practical applications, due to the large number of municipal streetlights connected in parallel, the power supply lines cannot provide a large output power. The input control module can control the charging process of the energy storage device 300. When the load on the power supply line is high, the input control module can reduce or shut down the charging process of the energy storage device 300. When there is no electric vehicle charging, the energy storage device 300 can store and accumulate electrical energy. Then, when the electric vehicle is charging, the output control module controls the energy storage device 300 to release the electrical energy inside the energy storage device 300 to charge the electric vehicle. Furthermore, in some embodiments, the charging device 200 can also obtain electrical energy from both the power supply line and the energy storage device 300 simultaneously, thereby obtaining a larger charging power. This can both reduce the power transmission pressure on the power supply line and accelerate the charging speed of the electric vehicle.

[0034] The technical details of each component will be introduced below.

[0035] In some implementations, such as Figure 1 , Figure 2As shown, the municipal street light electric vehicle charging device also includes a base 400, on which a first connector and a second connector 41 are provided. The first connector is used to connect to the street light device 100 and supply power to it, while the second connector 41 is used to connect to the energy storage device 300 and supply power to it. Both the first connector and the second connector 41 are electrically connected to the power supply line. By setting the first connector and the second connector 41 separately, the street light device 100 and the energy storage device 300 are connected to the power supply line through separate connectors. This ensures that operating one of the street light device 100 or the energy storage device 300 will not affect the circuit of the other, thus facilitating the operation, maintenance, and assembly of the municipal street light electric vehicle charging device.

[0036] In some implementations, such as Figure 1 , Figure 2 As shown, the charging device 200 and the energy storage device 300 are both mounted on the street light device 100 and are detachably connected to the street light device 100 by means of snap-fit, plug-in or other means.

[0037] In practical applications, for ease of manufacturing, the street light device 100, charging device 200, and energy storage device 300 are typically produced as separate units. After the street light device 100 is installed on both sides of the road, the charging device 200 and energy storage device 300 can be quickly connected to the street light device 100 as a single unit via a detachable connection structure. Furthermore, because the internal structure of the street light device 100 is relatively simpler than that of the charging device 200 and energy storage device 300, the street light device 100 is less prone to damage. Therefore, when the charging device 200 and energy storage device 300 need to be replaced due to malfunctions or other reasons, the aforementioned detachable connection method allows for very convenient replacement. In recent years, the technology of electric vehicle charging devices 200 and energy storage devices 300 has developed very rapidly, and the aforementioned detachable connection method also facilitates the replacement and upgrading of the charging device 200 and energy storage device 300.

[0038] In some implementations, such as Figure 1 , Figure 2 As shown, the energy storage device 300 and the power supply line are electrically connected to the street light device 100 via a switching module. The switching module is used to switch the electrical connection status between the street light device 100 and the energy storage device 300 and the power supply line.

[0039] In practical applications, if the power supply line experiences a power outage, the street light device 100 cannot obtain power from the power supply line. Under normal circumstances, the street light device 100 cannot provide lighting for the road and can only provide lighting after the power supply line is restored. This is very convenient. The municipal street light electric vehicle charging device provided in this application is equipped with an energy storage device 300, and the power source of the street light device 100 is switched from the power supply line to the energy storage device 300 through a switching module. Therefore, after a power outage, the energy stored in the energy storage device 300 can continue to provide lighting for the road. This ensures that the road equipped with the municipal street light electric vehicle charging device will not lose its lighting due to a power outage within a certain period of time, which facilitates people's travel and life.

[0040] It is understandable that when the energy storage device 300 needs to supply power to the street light device 100 due to a power outage, the output control module can prevent the energy storage device 300 from providing power to the charging device 200, so as to ensure that the street light device 100 has sufficient power and thus ensure the lighting effect of the road.

[0041] In some implementations, such as Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 As shown, the energy storage device 300 is provided with a connecting cavity 01, and a first conductive element 31 is provided inside the connecting cavity 01. The first conductive element 31 protrudes from the inner wall of the connecting cavity 01 to facilitate contact with other components. The energy storage device 300 obtains electrical energy through the first conductive element 31. The aforementioned second connector 41 includes a base 411, a movable member 412, an elastic member 413, and a second conductive member 414. The movable member 412 is made of conductive material and is movably connected to the base 411. One end of the elastic member 413 abuts against the movable member 412, and the other end abuts against the base 411. The second conductive member 414 is used to connect to the external power grid and is arranged opposite to the movable member 412. When the energy storage device 300 is correctly assembled, the first conductive member 31 is connected to the movable member 412. When the movable member 412 moves to the first predetermined position, the movable member 412 is disconnected from the second conductive member 414, and at this time the movable member 412 is not energized. When the movable member 412 moves to the second predetermined position, the movable member 412 abuts against the second conductive member 414, and at this time the movable member 412 is energized. The energy storage device 300 can obtain electrical energy by contacting the movable member 412 through the first conductive member 31.

[0042] In practical applications, when the energy storage device 300 is separated from the street light device 100, the second connector 41 is exposed and easily comes into contact with other objects. If the surface of the second connector 41 is electrified, it is easy to cause electric shock or short circuit when it comes into contact with other objects. In this application, through the movable connection between the movable member 412 and the base 411, when the energy storage device 300 is not connected to the second connector 41, the movable member 412 is in the first predetermined position, and the movable member 412 is separated from the second conductive member 414. Therefore, the movable member 412 is not electrified, and external objects... When the body comes into contact with the movable part 412, electric shock or short circuit accidents will not easily occur, thus improving the safety of the municipal street light electric vehicle charging device during installation and use. After the energy storage device 300 is connected to the second connector 41, the movable part 412 moves from the first predetermined position to the second predetermined position under the resistance of the first conductive part 31. During this process, the movable part 412 and the second conductive part 414 change from a separated state to a resisting contact state. The electrical energy on the second conductive part 414 is transferred to the energy storage device 300 through the movable part 412 to charge the energy storage device 300.

[0043] In other implementations, such as Figure 4 , Figure 5 , Figure 6 , Figure 7 As shown, the second connector 41 also includes an insulating element 415, which is disposed between the elastic element 413 and the second conductive element 414. In practical applications, the elastic element 413 is generally a spring made of metal material, with one end of the elastic element 413 abutting against the movable element 412 and the other end abutting against the seat 411, but very close to the second conductive element 414. In order to electrically isolate the second conductive element 414 from the elastic element 413, an insulating element 415 is provided between the second conductive element 414 and the elastic element 413, further improving the safety and stability of the municipal street light electric vehicle charging device during assembly and use.

[0044] Furthermore, the elastic ends of the aforementioned elastic member 413 are respectively provided with limiting grooves on the abutting surfaces of the movable member 412 and the base 400, and both ends of the elastic member 413 abut against the limiting grooves. The limiting grooves allow the two ends of the elastic member 413 to be embedded into the surfaces of the movable member 412 and the base 400, thereby preventing the two ends of the elastic member 413 from shifting due to vibration, impact, or other factors during the abutting process, thus improving the safety and stability of the second interface during use.

[0045] It is understood that the aforementioned elastic space can also be made of an elastic insulating material, which can prevent the current on the second conductive space from being transmitted to the moving part 412 through the elastic space.

[0046] In some implementations, such as Figure 4 , Figure 5 As shown, at least one first sealing ring 500 is provided between the side of the second connector 41 and the side of the connecting cavity 01. Since this municipal street light electric vehicle charging device is generally installed outdoors, the outdoor environment is complex and prone to rain and snow. The first sealing ring 500 forms a sealing structure between the second connector 41 and the side wall of the connecting cavity 01, effectively preventing moisture from the external environment from entering the interior of the connecting cavity 01. Inside the connecting cavity 01, the first conductive element 31 and the moving element 412 are in electrical contact; moisture ingress would pose a serious safety hazard. Therefore, the provision of the first sealing ring 500 improves the safety of this municipal street light electric vehicle charging device.

[0047] In some implementations, such as Figure 1 As shown, the charging device 200 also includes a display device 21, which is electrically connected to the energy storage device 300. The display device 21 can display multiple colors to indicate the power level of the energy storage device 300. The display device 21 is mounted on the streetlight pole 11 or the charging device 200. The display device 21 can display a color corresponding to the power level of the energy storage device 300 relative to the side of the road. When a user is on the road, they can intuitively determine whether the municipal streetlight electric vehicle charging device is available for charging and the amount of stored power by observing the color displayed on the display device 21, facilitating user selection.

[0048] Furthermore, to allow users to conveniently monitor the amount of electricity stored in the municipal street light electric vehicle charging device in real time, the display device 21 also includes a signal device electrically connected to the energy storage device 300. This signal device detects the electricity level of the energy storage device 300 and converts it into an electrical signal. The signal device also connects wirelessly to the user's mobile phone, allowing the user to view the real-time power status of the municipal street light electric vehicle charging device via their mobile phone, facilitating user selection and use.

[0049] The charging system provided in this application includes multiple municipal street light electric vehicle charging devices arranged at intervals. The energy storage devices 300 of the multiple municipal street light electric vehicle charging devices are connected in parallel through parallel connecting lines. The parallel connecting lines are provided with a parallel switching module, which can adjust the energy storage devices 300 of adjacent municipal street light electric vehicle charging devices to a parallel state.

[0050] When a user selects a municipal street light electric vehicle charging device for charging, if the energy storage device 300 of one municipal street light electric vehicle charging device cannot provide enough power to the user, and several adjacent municipal street light electric vehicle charging devices are not in use, the parallel switching module can switch the energy storage devices 300 of the adjacent municipal street light electric vehicle charging devices into a parallel state. This allows multiple energy storage devices 300 to simultaneously provide power to a single user, greatly improving the utilization rate of the energy storage devices 300 and accelerating the user's charging speed. When an adjacent municipal street light electric vehicle charging device is in use, the parallel switching module will disconnect the parallel connection with the energy measurement device of that adjacent municipal street light electric vehicle charging device to avoid voltage instability and ensure the stability of the user's charging process.

[0051] In addition to the effects mentioned above, when a power outage occurs due to road construction or malfunction, the remaining power of the energy storage devices 300 at different locations will vary depending on user usage. Through the aforementioned parallel switching module, adjacent energy storage devices 300 are connected in parallel via parallel lines during a power outage. This allows adjacent streetlights 100 to simultaneously utilize multiple energy storage devices 300 as power sources, resulting in a more even distribution of stored energy across the road. This prevents individual streetlights 100 from failing to illuminate due to low power levels in some devices. In simpler terms, by connecting multiple adjacent energy storage devices 300 in parallel via parallel lines, the aforementioned parallel switching device allows a single streetlight 100 to be powered by multiple energy storage devices 300 simultaneously, resulting in a more uniform distribution of power among the energy storage devices 300.

[0052] In some embodiments, the charging system also includes a control device connected to multiple energy storage devices 300. The control device is used to adjust the electrical connection status of the multiple municipal street light electric vehicle charging devices. In practical applications, electricity consumption varies throughout the day. The control device can adjust the energy storage devices 300's energy storage capacity based on the different electricity consumption periods. Specifically, during peak electricity consumption periods, the control device can control the charging devices 200 to utilize the energy stored in the energy storage devices 300 to charge the electric vehicles. During periods of low electricity consumption, the control device can control the charging devices 200 to reduce energy consumption in the energy storage devices 300 and increase energy consumption in the power supply lines, thus maximizing the satisfaction of users' charging needs.

[0053] In addition to the effects mentioned above, when there are no users using the device, during peak electricity consumption periods, the control device can reduce the energy storage rate of the energy storage device 300 to reduce the load on the power supply line and ensure line safety; during periods of low electricity consumption, the control device can increase the energy storage power of the energy storage device 300 to accelerate the storage of electrical energy by the charging system without compromising line safety.

[0054] In some implementations, the control device is electrically connected to the output control module and input control module of the energy storage device 300, and the control device also controls the charging and discharging of the energy storage device 300. When the street light device 100 is in operation, such as at night, priority should be given to ensuring the illumination effect of the road, followed by ensuring the charging effect of the charging device 200. However, the power of municipal roads is limited. If the street light device 100, the charging device 200, and the energy storage device 300 are all in operation, it will generate a large electrical load on the power supply line, which may endanger the safety of the power supply line. To avoid the above situation, the control device is electrically connected to the power supply line and can determine the real-time output power of the power supply line. When the output power of the power supply line is about to exceed the predetermined maximum value, the control device can shut down part of the energy storage process of the energy storage device 300 to reduce the occupation of the power supply line output power. At the same time, the control device can also increase the output process of the energy storage device 300, allowing the energy storage device 300 to take on part of the charging load of the charging device 200, thereby reducing the load on the power supply line and ensuring the electrical safety of the line.

[0055] In addition to the aforementioned effects, the control device can also provide users with both fast charging and slow charging modes simultaneously. When the user selects fast charging, the control device, through its output control module, electrically connects the energy storage device 300 to the charging device 200. In this case, the charging device 200 can simultaneously obtain power from both the energy storage device 300 and the power supply line, thus achieving fast charging. When the user selects slow charging, the control device, through its output control module, electrically disconnects the charging device 200 from the energy storage device 300. In this case, the charging device 200 obtains power only through the power supply line, thus performing slow charging. This allows users to choose the appropriate charging mode according to their needs.

[0056] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0057] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0058] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A charging device for electric vehicles used in municipal streetlights, characterized in that, include: The street light device (100) includes a street light pole (11) having a mounting cavity and a lamp head (12) connected to the street light pole (11), the lamp head (12) being connected to a power supply line, the power supply line passing through the street light pole (11). A charging device (200) is fixedly connected to the street light pole (11). The charging device (200) includes a charging compartment (22) and a charging connector (23). The charging connector (23) is electrically connected to the charging compartment (22). An energy storage device (300) is at least partially built into the mounting cavity. The energy storage device (300) is connected to the power supply line via an input control module. The energy storage device (300) is connected to the power supply line. The charging device (200) is electrically connected to the energy storage device (300) and the power supply line via an output control module. The energy storage device (300) is provided with a connecting cavity (01), and a first conductive element (31) is provided inside the connecting cavity (01), the first conductive element (31) protruding from the inner wall of the connecting cavity (01); The municipal street light electric vehicle charging device also includes a base (400), on which a first connector and a second connector (41) are provided. The first connector is used to connect to the street light device (100), and the second connector (41) is used to connect to the energy storage device (300). Both the first connector and the second connector (41) are electrically connected to the power supply line. The second connector (41) includes a base (411), a movable member (412), an elastic member (413), and a second conductive member (414). The movable member (412) is movably connected to the base (411). One end of the elastic member (413) abuts against the movable member (412), and the other end abuts against the base (411). The second conductive member (414) is used to connect to an external power grid and is disposed opposite to the movable member (412). The first conductive element (31) can be selectively connected to the movable element (412). When the movable element (412) moves to a first predetermined position, the movable element (412) is disconnected from the first conductive element (31). When the movable element (412) moves to a second predetermined position, the movable element (412) abuts against the first conductive element (31).

2. The municipal street light electric vehicle charging device according to claim 1, characterized in that, The charging device (200) and the energy storage device (300) are both mounted on the street light device (100) and are detachably connected to the street light device (100).

3. The municipal street light electric vehicle charging device according to claim 1, characterized in that, The energy storage device (300) and the power supply line are electrically connected to the street light device (100) through a switching module.

4. The municipal street light electric vehicle charging device according to claim 1, characterized in that, At least one first sealing ring (500) is provided between the side of the second connector (41) and the side of the connecting cavity (01).

5. The municipal street light electric vehicle charging device according to claim 1, characterized in that, The charging device (200) also includes a display device (21), which is electrically connected to the energy storage device (300); The display device (21) can display multiple colors to indicate the power of the energy storage device (300), and the display device (21) is installed on the street lamp pole (11) or the charging device (200).

6. A charging system, characterized in that, The device includes multiple municipal street light electric vehicle charging devices as described in any one of claims 1 to 5, which are spaced apart. The energy storage devices (300) of the multiple municipal street light electric vehicle charging devices are connected in parallel via parallel connecting lines, and the parallel connecting lines are provided with parallel switching modules.

7. The charging system according to claim 6, characterized in that, The charging system also includes a control device connected to multiple energy storage devices (300), which is used to adjust the electrical connection status of the multiple municipal street light electric vehicle charging devices.

8. The charging system according to claim 7, characterized in that, The control device controls the charging and discharging of the energy storage device (300).

Images