Electric vehicle charging structure and electric vehicle

Abstract

This invention provides an electric vehicle charging structure and an electric vehicle, relating to the technical field of electric vehicles. The charging structure includes a charging plug and a charging socket. At least one first magnet and at least one second magnet are disposed on the snap-fit ​​protrusion. A third magnet for magnetic attraction with the first magnet and a fourth magnet for magnetic attraction with the second magnet are disposed around the insertion hole. The first and second magnets on the snap-fit ​​protrusion of the charging plug provided by this invention can respectively magnetically attract the third and fourth magnets on the charging socket. This magnetic attraction ensures that the insertion and extraction force between the charging plug and the charging socket meets requirements. Furthermore, the first and second magnets have opposite magnetic properties on the same side; when the charging plug is reversed, resistance is generated between the magnets, allowing the user to know in advance that the charging plug is reversed and correct it in time.

Description

Technical Field

[0001] This invention relates to the technical field of electric vehicles, and in particular to an electric vehicle charging structure and an electric vehicle. Background Technology

[0002] There are two types of charging sockets for electric two-wheeled vehicles that meet the new national standard: one is for lead-acid batteries, which uses two power pins and two communication pins (2+2); the other is for lithium-ion batteries, which uses two power pins and four communication pins (2+4).

[0003] However, both types of sockets have the following problems: 1. When the tensile strength of the plug riveting is insufficient, the user can damage the outer sheath of the wire by pulling it too hard, resulting in a broken wire; 2. When charging an electric vehicle, the plug and socket cannot automatically connect when plugged in; 3. When charging an electric vehicle, the insertion and removal force between the plug and socket is too great, making it difficult to plug and unplug. Summary of the Invention

[0004] The purpose of this invention is to provide an electric vehicle charging structure and an electric vehicle to alleviate the technical problem of excessive insertion and removal force and difficulty in insertion and removal in the electric vehicle charging mechanism of Fairy A.

[0005] The present invention provides an electric vehicle charging structure, including a charging plug and a charging socket. The charging plug is provided with a snap-fit ​​protrusion, and the snap-fit ​​protrusion forms an insertion part at one end of the charging plug. At least one first magnet and at least one second magnet are provided on the snap-fit ​​protrusion; the charging socket is provided with an insertion hole that matches the insertion part, and a third magnet for magnetic attraction with the first magnet and a fourth magnet for magnetic attraction with the second magnet are provided around the insertion hole. The first magnet and the second magnet have opposite magnetic properties toward one end of the charging socket.

[0006] In an optional embodiment, the snap-fit ​​protrusion is provided with a first magnet and a second magnet, which are disposed on both sides of the insertion portion.

[0007] In an optional embodiment, the length of the insertion part is a, where 8 mm ≤ a ≤ 14 mm.

[0008] In an optional embodiment, a guide slope is provided at the end of the insertion portion facing the charging socket.

[0009] In an optional embodiment, the first magnet, the second magnet, the third magnet, and the fourth magnet are all neodymium iron boron magnets.

[0010] In an optional embodiment, the charging plug is provided with an indicator mark.

[0011] In an optional embodiment, a sealing protrusion is provided on the side of the charging socket facing the charging plug, and the sealing protrusion is disposed around the insertion hole. A waterproof cover is hinged to the charging socket, and a sealing groove matching the sealing protrusion is provided on the waterproof cover.

[0012] In an optional embodiment, the charging socket is provided with mounting ears, and mounting holes are provided on the mounting ears.

[0013] In an optional embodiment, the insertion hole is provided with a socket platform and a positive electrode plug, and the socket platform is provided with a negative electrode plug and multiple communication plugs. The insertion part is provided with a positive terminal hole corresponding to the positive terminal plug and a negative terminal plug corresponding to the negative terminal plug, as well as a communication pin corresponding to the communication socket.

[0014] The electric vehicle charging mechanism provided by this invention has a charging plug with a first magnet and a second magnet on its snap-fit ​​protrusion. The first magnet and the second magnet can be magnetically attracted to the third magnet and the fourth magnet on the charging socket, respectively. The magnetic attraction of the magnets can ensure that the insertion and extraction force between the charging plug and the charging socket meets the requirements. Moreover, the magnets on the same side of the first magnet and the second magnet have opposite magnetic properties. When the charging plug is inserted into the charging socket, if the charging plug is upside down, the magnets will generate resistance, allowing the user to know in advance that the charging plug is upside down and to correct it in time.

[0015] The present invention provides an electric vehicle, including the electric vehicle charging structure described in any of the foregoing embodiments.

[0016] Compared with the prior art, the electric vehicle provided by the present invention has the electric vehicle charging structure provided by the present invention, and thus has all the beneficial effects of the electric vehicle charging structure provided by the present invention. Attached Figure Description

[0017] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the electric vehicle charging structure provided in an embodiment of the present invention; Figure 2 for Figure 1 A schematic diagram of the AA section of the electric vehicle charging structure shown; Figure 3 for Figure 2 The diagram shows a partial enlarged view of section B of the AA section of the electric vehicle charging structure shown. Figure 4 for Figure 1 A schematic diagram of the charging socket in the electric vehicle charging structure shown. Figure 5 for Figure 1 Another schematic diagram of the charging socket of the electric vehicle charging structure shown; Figure 6 for Figure 1 A schematic diagram of the charging plug of the electric vehicle charging structure shown. Figure 7 for Figure 6 A schematic diagram of the charging plug from another angle is shown. Figure 8 for Figure 1 The diagram shows the structural schematic of the electric vehicle charging structure during the insertion of the charging plug and charging socket. Figure 9 for Figure 1 The diagram shows the structure of the fourth magnet in the electric vehicle charging structure.

[0019] Icons: 100-Charging socket; 101-Waterproof cover; 1011-Sealing groove; 102-Mounting ear; 1021-Mounting hole; 103-Insert hole; 104-Sealing protrusion; 105-Socket platform; 106-Communication socket; 107-Negative socket; 108-Positive plug; 200-Charging plug; 201-Snap-fit ​​protrusion; 202-Insert part; 203-Positive socket; 204-Communication pin; 205-Negative plug; 206-Guide slope; 300-Third magnet; 400-Fourth magnet; 500-First magnet; 600-Second magnet; 700-Indicator mark. Detailed Implementation

[0020] The terms “first,” “second,” “third,” etc., are used only for distinguishing descriptions and do not indicate a sequence number, nor should they be interpreted as indicating or implying relative importance.

[0021] 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 relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0022] In the description of this application, it should be noted that the terms "inner", "outer", "left", "right", "upper", "lower", 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 this application is in use. They 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, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0023] In the description of this application, unless otherwise expressly specified and limited, the terms “set up,” “install,” “connect,” and “link” shall be interpreted broadly, for example, as a fixed connection, a detachable connection, or an integral connection; as a mechanical connection or an electrical connection; as a direct connection or an indirect connection through an intermediate medium; or as a connection within two components.

[0024] The technical solution of this application will now be clearly and completely described with reference to the accompanying drawings.

[0025] Example Reference Figures 1-9 The present invention provides an electric vehicle charging structure, including a charging plug 200 and a charging socket 100. The charging plug 200 is provided with a snap-fit ​​protrusion 201, and the snap-fit ​​protrusion 201 causes one end of the charging plug 200 to form an insertion portion 202. At least one first magnet 500 and at least one second magnet 600 are provided on the snap-fit ​​protrusion 201; the charging socket 100 is provided with an insertion hole 103 that matches the insertion part 202, and a third magnet 300 for magnetic attraction with the first magnet 500 and a fourth magnet 400 for magnetic attraction with the second magnet 600 are provided on the periphery of the insertion hole 103. The first magnet 500 and the second magnet 600 have opposite magnetic properties toward one end of the charging socket 100.

[0026] In some embodiments, the charging socket 100 of the electric vehicle charging structure is disposed on the electric vehicle, and the charging plug 200 is disposed on the charger. One end of the charger is connected to an external power source, and the other end of the charging plug 200 is inserted into the charging socket 100, thereby charging the battery on the electric vehicle.

[0027] To prevent the charging plug 200 from being over-inserted into the charging socket 100, a snap-fit ​​protrusion 201 is provided on the charging plug 200. The snap-fit ​​protrusion 201 can abut against the charging plug 200, thereby preventing the insertion part 202 from being over-inserted into the insertion hole 103 and causing unnecessary damage.

[0028] One or more first magnets 500 and one or more second magnets 600 are provided on the snap-fit ​​protrusion 201. The number of first magnets 500 may be different from the number of second magnets 600. The charging socket 100 is provided with the same number of third magnets 300 as the first magnets 500 and the same number of fourth magnets 400 as the second magnets 600. The first magnets 500 and the third magnets 300 can be magnetically attracted, and the second magnets 600 and the fourth magnets 400 can be magnetically attracted. When the charging plug 200 is inserted into the charging socket 100, the first magnets 500 and the third magnets 300 are magnetically attracted, and the second magnets 600 and the fourth magnets 400 are magnetically attracted. This reduces the external force required when the charging plug 200 is inserted into the charging socket 100, which is beneficial for automatic correction between the charging plug 200 and the charging socket 100 and for blind insertion.

[0029] Reference Figure 2 In an optional embodiment, the snap-fit ​​protrusion 201 is provided with a first magnet 500 and a second magnet 600, and the first magnet 500 and the second magnet 600 are disposed on both sides of the insertion portion 202.

[0030] Reference Figure 8 In an optional embodiment, the length of the insertion part 202 is a, where 8 mm ≤ a ≤ 14 mm.

[0031] To prevent the charging plug 200 from easily detaching from the charging socket 100, the insertion and extraction force between the charging plug 200 and the charging socket 100 is controlled between 2N and 25N; the first magnet, second magnet, third magnet, and fourth magnet have the same specifications and are all N52 neodymium iron boron magnets, refer to... Figure 9 The fourth magnet has dimensions of 20mm × 1mm × 1mm; that is, the area of ​​the fourth magnet facing the second magnet is 20mm². 2 .

[0032] formula:

[0033] F: Suction force (unit: N, Newton); B r Remanence of a magnet (unit: T, Tesla), for example, the Br of an N52 neodymium iron boron magnet is approximately 1.45T; A: The effective contact area of ​​a magnet (unit: m²), which is the area of ​​the magnetic poles facing each other; μ0: Permeability in vacuum, μ0 = 4π × 10⁻⁶ -7 H / m ≈ 1.2566 × 10 -6 H / m; g: The gap between the two magnets (unit: m); δ: The thickness of the magnetic pole of the magnet (unit: m), that is, the dimension along the direction of the attraction force.

[0034] When the gap between the two magnets is 0.4mm, the total attractive force of the upper and lower magnets is F = 2 × (1.45² × 20 × 1 × 10⁻⁶). -6 ) / (2×1.2566×10 -6 ) ×(1 / (1+0.4×10 - ³ / (1×10 - ³))≈23.9N; When the gap between the two magnets is 8.4mm, the total attractive force of the upper and lower magnets is F = 2 × (1.45² × 20 × 1 × 10⁻⁶). -6 ) / (2×1.2566×10 -6 )×(1 / (1+(8.4×10 - ³) / (1×10 - ³))≈3.56N; When the gap between the two magnets is 14mm, the total attractive force of the upper and lower magnets is F = 2 × (1.45² × 20 × 1 × 10⁻⁶). -6 ) / (2×1.2566×10 -6 )×(1 / (1+(14×10 - ³) / (1×10 - ³))≈2.23N.

[0035] Reference Figure 3 The first magnet 500 and the second magnet 600 are disposed within the snap-fit ​​protrusion 201, and the gap between the first magnet 500 and the outer wall of the snap-fit ​​protrusion 201 is approximately 0.2 mm. When the first magnet 500 and the third magnet 300 are magnetically attracted, the gap between the first magnet 500 and the third magnet 300 is approximately 0.4 mm. Similarly, the minimum gap between the second magnet 600 and the fourth magnet 400 is also approximately 0.4 mm. When the charging plug 200 is inserted into the charging socket 100, there is approximately 24 N of insertion and extraction force, making it difficult for the charging plug 200 to detach from the charging socket 100, and allowing the user to easily detach the charging plug 200 from the charging socket 100. It is necessary to ensure that the pins and the socket are in full surface contact during charging and will not separate, and that the charging plug 200 can be easily unplugged when not charging.

[0036] Reference Figure 8When the gap between the two magnets is β, and β equals 14mm, there is a force of about 2.23N between the charging plug and the charging socket. At this time, the charging plug 200 can move towards the charging socket 100 by relying on the self-attraction of the magnet, so that the charging plug 200 can automatically insert into the charging socket 100. When the charging plug 200 does not tend to move towards the charging socket 100, the up and down direction of the charging plug 200 may be reversed, and the direction of the charging plug 200 needs to be changed. Compared with using ring magnets, it can correct errors in advance and improve assembly efficiency.

[0037] This electric vehicle charging structure is more labor-saving, convenient, has a longer service life, is safer, and achieves rapid adsorption and automatic insertion correction functions.

[0038] To increase the insertion and extraction force between the charging plug 200 and the charging socket 100 as needed, different magnets can be used.

[0039] The end of the first magnet 500 facing the third magnet 300 is the S pole, and the end of the second magnet 600 facing the fourth magnet 400 is the N pole; when the end of the first magnet 500 facing the third magnet 300 is the N pole, the end of the second magnet 600 facing the fourth magnet 400 is the S pole.

[0040] Reference Figure 8 In an optional embodiment, a guide slope 206 is provided at one end of the insertion part 202 facing the charging socket 100.

[0041] To better enable blind insertion between the charging plug 200 and the charging socket 100, and to make it easier for the charging plug 200 to be inserted into the insertion hole 103, a guide slope 206 is provided on the charging plug 200. That is, the insertion part 202 of the charging plug 200 has a guide slope 206. The guide slope 206 makes the front end of the charging plug 200 smaller, which makes it easier for the insertion part 202 to be inserted into the insertion hole 103.

[0042] In an optional embodiment, the first magnet 500, the second magnet 600, the third magnet 300, and the fourth magnet 400 are all neodymium iron boron magnets.

[0043] In an optional embodiment, the charging plug 200 is provided with an indicator 700.

[0044] An indicator 700 is provided on the charging plug 200. The indicator 700 is used to indicate the up and down direction of the charging plug 200, so as to prevent the charging plug 200 from being upside down when it is inserted into the charging socket 100. The indicator 700 is generally triangular in shape, and the material of the indicator 700 can be a luminous board.

[0045] Reference Figure 4 and Figure 5 In an optional embodiment, a sealing protrusion 104 is provided on the side of the charging socket 100 facing the charging plug 200, and the sealing protrusion 104 is provided on the periphery of the insertion hole 103. A waterproof cover 101 is hinged to the charging socket 100, and a sealing groove 1011 matching the sealing protrusion 104 is provided on the waterproof cover 101.

[0046] A sealing protrusion 104 is provided on the charging socket 100. The sealing protrusion 104 is arranged circumferentially along the insertion hole 103. The sealing groove 1011 on the waterproof cover 101 can cover the outer contour of the sealing protrusion 104. In this way, the sealing groove 1011 can completely cover the insertion hole 103, which effectively prevents foreign objects from entering the insertion hole 103.

[0047] In an optional embodiment, the charging socket 100 is provided with a mounting ear 102, and the mounting ear 102 is provided with a mounting hole 1021.

[0048] The charging socket 100 is generally mounted on an electric vehicle. To facilitate the assembly of the charging socket 100 with the electric vehicle, two mounting ears 102 are provided on the charging socket 100, and mounting holes 1021 are provided on the mounting ears 102. A mounting plate is provided on the electric vehicle, and the mounting holes 1021 correspond to the fixing holes on the mounting plate. Then, screws are inserted into the mounting holes 1021 and screwed into the fixing holes on the mounting plate, thereby fixing the charging socket 100 to the electric vehicle.

[0049] Reference Figures 3-7 In an optional embodiment, the insertion hole 103 is provided with a socket platform 105 and a positive plug 108, and the socket platform 105 is provided with a negative plug 107 and a plurality of communication plugs 106. The insertion part 202 is provided with a positive plug hole 203 corresponding to the positive plug 108, a negative plug 205 corresponding to the negative plug hole 107, and a communication pin 204 corresponding to the communication plug hole 106.

[0050] In some embodiments, a socket platform 105 is provided in the insertion hole 103, and a plurality of communication sockets 106 are provided on the socket platform 105. Generally, a lithium battery charging socket 100 is provided with four communication sockets 106, and a lead-acid battery charging socket 100 is provided with two communication sockets 106. A negative terminal socket 107 is provided on the socket platform 105, and a corresponding negative terminal plug 205 is provided on the charging plug 200. The negative terminal plug 205 can be inserted into the negative terminal socket 107, thereby realizing negative terminal communication between the charging plug 200 and the charging socket 100. A positive terminal plug 108 is provided in the charging socket 100, and a positive terminal socket 203 is provided in the charging plug 200. The positive terminal plug 108 can be inserted into the positive terminal socket 203, thereby realizing positive terminal connection.

[0051] The charging socket 100 may also be provided with a positive plug 108 and a negative plug 205, and the charging plug 200 may be provided with a positive socket 203 and a negative socket 107; in another embodiment, the charging socket 100 may be provided with a positive socket 203 and a negative socket 107, and the charging plug 200 may be provided with a positive plug 108 and a negative plug 205, and other configuration methods may also be used.

[0052] The electric vehicle charging mechanism provided by this invention has a charging plug 200 with a snap-fit ​​protrusion 201 equipped with a first magnet 500 and a second magnet 600, which can respectively attract the third magnet 300 and the fourth magnet 400 on the charging socket 100. This magnetic attraction ensures that the insertion and extraction force between the charging plug 200 and the charging socket 100 meets the requirements. Furthermore, the first magnet 500 and the second magnet 600 have opposite magnetic properties on the same side. When the charging plug 200 is inserted into the charging socket 100 and its vertical direction is reversed, resistance will be generated between the magnets, allowing the user to know in advance that the charging plug 200 is reversed and correct it in time.

[0053] Compared to existing technologies, it is easier and more convenient to charge, has a longer lifespan, is safer, and enables rapid adsorption and automatic insertion correction.

[0054] The present invention provides an electric vehicle, including the electric vehicle charging structure described in any of the foregoing embodiments.

[0055] Compared with the prior art, the electric vehicle provided by the present invention has the electric vehicle charging structure provided by the present invention, and thus has all the beneficial effects of the electric vehicle charging structure provided by the present invention.

[0056] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. An electric vehicle charging structure, characterized in that, It includes a charging plug (200) and a charging socket (100). The charging plug (200) is provided with a snap-fit ​​protrusion (201), and the snap-fit ​​protrusion (201) causes one end of the charging plug (200) to form an insertion part (202). At least one first magnet (500) and at least one second magnet (600) are provided on the snap-fit ​​protrusion (201); the charging socket (100) is provided with an insertion hole (103) that matches the insertion part (202), and a third magnet (300) for magnetic attraction with the first magnet (500) and a fourth magnet (400) for magnetic attraction with the second magnet (600) are provided on the periphery of the insertion hole (103). The first magnet (500) and the second magnet (600) have opposite magnetic properties toward one end of the charging socket (100).

2. The electric vehicle charging structure according to claim 1, characterized in that, The snap-fit ​​protrusion (201) is provided with a first magnet (500) and a second magnet (600), and the first magnet (500) and the second magnet (600) are provided on both sides of the insertion part (202).

3. The electric vehicle charging structure according to claim 1, characterized in that, The length of the insertion part (202) is a, where 8 mm ≤ a ≤ 14 mm.

4. The electric vehicle charging structure according to claim 1, characterized in that, The insertion part (202) has a guide slope (206) at one end facing the charging socket (100).

5. The electric vehicle charging structure according to claim 1, characterized in that, The first magnet (500), the second magnet (600), the third magnet (300) and the fourth magnet (400) are all neodymium iron boron magnets.

6. The electric vehicle charging structure according to claim 1, characterized in that, The charging plug (200) is provided with an indicator (700).

7. The electric vehicle charging structure according to claim 1, characterized in that, The charging socket (100) has a sealing protrusion (104) on the side facing the charging plug (200), and the sealing protrusion (104) is located on the periphery of the insertion hole (103). A waterproof cover (101) is hinged to the charging socket (100), and a sealing groove (1011) matching the sealing protrusion (104) is provided on the waterproof cover (101).

8. The electric vehicle charging structure according to claim 1, characterized in that, The charging socket (100) is provided with a mounting ear (102), and the mounting ear (102) is provided with a mounting hole (1021).

9. The electric vehicle charging structure according to claim 1, characterized in that, The insertion hole (103) is provided with a socket platform (105) and a positive plug (108), and the socket platform (105) is provided with a negative plug (107) and multiple communication plugs (106). The insertion part (202) is provided with a positive plug hole (203) corresponding to the positive plug (108), a negative plug (205) corresponding to the negative plug hole (107), and a communication pin (204) corresponding to the communication plug hole (106).

10. An electric vehicle, characterized in that, Includes the electric vehicle charging structure according to any one of claims 1-9.

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