Charging small door assembly and electric vehicle

Through the design of the drive component and connecting rod mechanism, the problems of inconvenient operation and easy damage of traditional charging door components are solved, and convenient, stable and sealed charging port management is achieved.

CN223423821UActive Publication Date: 2025-10-10CHONGQING ZHENGZE AUTOMOBILE PARTS
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Patent Information

Application Number
CN202422615587.9
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-10-29
Publication Date
2025-10-10
Estimated Expiration
2034-10-29

AI Technical Summary

Technical Problem

Traditional charging door components are difficult to operate and can easily be caught by foreign objects, causing damage.

Method used

A charging door assembly is designed. A driving assembly is used to drive the door cover to reciprocate between the closing position and the opening position. The opening and closing of the door cover is controlled by a touch switch to prevent folding. The connecting rod mechanism and sliding structure are combined to ensure stability and sealing.

Benefits of technology

It realizes convenient operation, prevents the door cover from being hooked by foreign objects, and ensures sealing and aesthetics.

✦ Generated by Eureka AI based on patent content.

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  • Figure CN223423821U_ABST
    Figure CN223423821U_ABST
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Abstract

The utility model belongs to the technical field of automobile accessories, and provides a charging small door assembly and an electric vehicle, and the charging small door assembly comprises a hollow base which is provided with an opening; the door cover is arranged at the opening of the base, is provided with a closing station and an opening station, and is in sliding connection with the base, so that the door cover can only do reciprocating motion between the closing station and the opening station in the preset direction; and the driving assembly is arranged on the base and is in transmission connection with the door cover, the driving assembly drives the door cover to a closing station to close the charging port in a working state, and the driving assembly drives the door cover to an opening station to open the charging port in a non-working state. According to the charging small door assembly and the electric vehicle, the structure is simple, the design is reasonable, the door cover can be opened or closed by controlling the driving assembly, the door cover cannot be turned over towards the outside of the vehicle body, and the door cover is prevented from being damaged due to the fact that the door cover is hooked by foreign matter.
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Description

Technical Field

[0001] The utility model relates to the technical field of automobile accessories, in particular to a charging door component and an electric vehicle. Background Art

[0002] The charging door assembly, which protects the charging head of an electric vehicle from dirt, rain, snow, sunlight, and other corrosion, consists of a base and a door cover. Traditional charging door assemblies typically require unlocking from inside the vehicle and mechanically pressing it open from outside. After charging is complete, the door cover must be manually closed. During use, drivers often find the door cover is not closed once they get in the vehicle, and must then exit to close it, making it extremely inconvenient. Furthermore, existing door covers often fold outward, making them easily snagged by foreign objects (e.g., clothing of pedestrians outside the vehicle, roadside branches, etc.), causing irreversible damage to the door cover. Summary of the Invention

[0003] In view of the defects in the prior art, the purpose of the present invention is to provide a charging door assembly and an electric vehicle to solve or alleviate the above-mentioned technical problems in the prior art.

[0004] In order to achieve the above objectives, the present invention provides a charging door assembly, comprising:

[0005] a base, which is hollow and has an opening;

[0006] a door cover, which is disposed at the opening of the base and has a closing position and an opening position, and is slidably connected to the base so that the door cover can only reciprocate between the closing position and the opening position along a preset direction; and

[0007] A driving assembly is arranged on the base and is transmission-connected to the door cover. In a working state, the driving assembly drives the door cover to the closing position to close the charging port. In a non-working state, the driving assembly drives the door cover to the opening position to open the charging port.

[0008] Furthermore, the door cover comprises:

[0009] a sliding seat slidably connected to the base; and

[0010] The cover body is arranged on the sliding seat and fixedly connected to the sliding seat.

[0011] Furthermore, the door cover further comprises a sealing element, which is sleeved on the side wall of the sliding seat, and when the door cover is in the closing position, the sealing element contacts the inner side of the vehicle body.

[0012] Furthermore, the driving assembly includes:

[0013] a driving device, which is disposed on the base and fixedly connected to the base; and

[0014] The connecting rod mechanism has a power input end that is transmission-connected to the power output shaft of the driving device, and a power output end that is transmission-connected to the door cover.

[0015] Furthermore, the connecting rod mechanism includes:

[0016] a first connecting rod, a first end of which is hinged to the door cover; and

[0017] The second connecting rod has a first end hinged to the second end of the first connecting rod, a second end rotatably connected to the base, and a second end transmission-connected to the power output shaft of the driving device.

[0018] Furthermore, two first sliding holes are provided on each side of the base, and a first sliding portion respectively matched with the two first sliding holes is provided on each side of the door cover, and the two first sliding portions located on the same side are staggered.

[0019] Furthermore, the connecting rod mechanism also includes a third connecting rod, which is arranged on the side of the first sliding hole away from the sliding seat. The third connecting rod is slidably connected to the base so that the third connecting rod can only move along a preset direction, and the two ends of the third connecting rod are respectively connected to the corresponding two first sliding parts.

[0020] Furthermore, the first sliding hole is L-shaped, and the first sliding hole includes a first guide portion and a second guide portion, wherein the first end of the first guide portion is connected to the first end of the second guide portion, and the second end extends toward the opening of the base.

[0021] Furthermore, a second sliding hole adapted to the first sliding part is provided at a position corresponding to the third connecting rod and the first sliding part, and the angle between the length direction of the second sliding hole and the length direction of the first sliding hole is α, wherein α is an acute angle, and the first sliding part passes through the first sliding hole and is inserted into the second sliding hole.

[0022] On the other hand, the present invention also provides an electric vehicle, comprising any one of the charging door components described above.

[0023] Beneficial effects of the utility model:

[0024] The charging door assembly and electric vehicle provided by the present invention drive the door cover to move from the closing position to the opening position or from the opening position to the closing position by setting a driving assembly, so that the door cover can be opened or closed by simply pressing a switch. The operation is convenient, and the door cover can only move back and forth between the closing position and the opening position along a preset direction and will not fold out of the vehicle, thereby avoiding the risk of the door body being hooked by foreign objects. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following briefly describes the drawings required for the specific embodiments or the description of the prior art. Similar elements or parts are generally identified by similar reference numerals throughout the drawings. Elements or parts in the drawings are not necessarily drawn to scale.

[0026] Figure 1 A three-dimensional view of a charging door assembly provided in one embodiment of the present invention;

[0027] Figure 2 for Figure 1 An enlarged view of section A is shown;

[0028] Figure 3 for Figure 1 A three-dimensional view of the charging door assembly from another direction;

[0029] Figure 4 for Figure 3 A three-dimensional view of the internal structure of part B is shown;

[0030] Figure 5 for Figure 1 A perspective view of the base of the charging door assembly is shown;

[0031] Figure 6 for Figure 1 A perspective view of the door cover of the charging door assembly shown;

[0032] Figure 7 for Figure 1 A combined three-dimensional view of the base and the third connecting rod of the charging door assembly shown;

[0033] Figure 8 for Figure 7 An enlarged view of section C is shown;

[0034] Figure 9 for Figure 1 An exploded perspective view of the base and third connecting rod of the charging door assembly shown;

[0035] Figure 10 for Figure 9 An enlarged view of section D is shown;

[0036] Figure 11 for Figure 1 A combined structural view of the first sliding hole, the second sliding hole, and the first sliding portion of the charging door assembly shown;

[0037] Figure 12 for Figure 1 A three-dimensional view of the charging door assembly shown in another direction.

[0038] Reference numerals:

[0039] 100. Base; 110. First sliding hole; 111. First guide portion; 112. Second guide portion; 120. Slide groove; 130. Water flow hole; 210. Sliding seat; 211. First sliding portion; 220. Cover; 230. Sealing element; 310. Driving device; 311. Second gear; 320. First connecting rod; 330. Second connecting rod; 340. Third connecting rod; 341. Second sliding hole; 342. Second sliding portion; 350. Transmission shaft; 351. First gear; 400. Touch switch; 500. Indicator light. DETAILED DESCRIPTION

[0040] The following embodiments of the technical solution of the present invention are described in detail with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention and are therefore only examples and are not intended to limit the scope of protection of the present invention.

[0041] It should be noted that, unless otherwise specified, the technical terms or scientific terms used in this application should have the common meanings understood by those skilled in the art to which this utility model belongs.

[0042] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0043] In addition, the terms "first," "second," etc. are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. In the description of this utility model, "plurality" means more than two, unless otherwise specifically defined.

[0044] In this application, unless otherwise expressly specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0045] In this application, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0046] like Figure 1-12 As shown, the utility model provides a charging door assembly, including a base 100, a door cover and a drive assembly.

[0047] The base 100 is hollow and has an opening. The base 100 is fixedly arranged on the vehicle body.

[0048] The door cover is disposed at the opening of the base 100 and has a closed position and an open position. When the door cover is in the closed position, the door cover closes the charging port and is flush with the outer side of the vehicle body. When the door cover is in the open position, the door cover opens the charging port, allowing the charging plug to be inserted into the charging port to charge the vehicle.

[0049] The door cover is slidably connected to the base 100 so that the door cover can only move back and forth between the closing position and the opening position along a preset direction, and when the door cover moves from the closing position to the opening position, the door cover can only move toward the inside of the vehicle body along the preset direction, rather than folding outward from the vehicle body, thereby preventing the door cover from being hooked by foreign objects.

[0050] Specifically, first sliding holes 110 are provided on the sidewalls on opposite sides of the base 100, and first sliding portions 211 are correspondingly provided on the sidewalls on opposite sides of the door cover. The first sliding portions 211 are slidably inserted into the first sliding holes 110. In operation, the first sliding portions 211 cooperate with the first sliding holes 110 to limit and guide the movement of the sliding base 210, thereby ensuring that the first sliding portion 211 (i.e., the door cover) can only move along the length of the first sliding holes 110.

[0051] The driving assembly is arranged on the base 100, and the driving assembly is in driving connection with the door cover.

[0052] The charging door assembly provided by the utility model has the advantages that the driving assembly is arranged to drive the door cover to move from the closing position to the opening position or from the opening position to the closing position, so that the door cover can be opened or closed by only pressing the switch, and the operation is convenient.

[0053] As shown in Figure 1 , 6 , the door cover comprises a sliding seat 210 and a cover body 220.

[0054] The sliding seat 210 is in sliding connection with the base 100. Specifically, the first sliding holes 110 are arranged on the opposite side walls of the base 100, and the first sliding parts 211 are correspondingly arranged on the opposite side walls of the sliding seat 210, and the first sliding parts 211 are slidingly inserted into the first sliding holes 110. In the working state, the movement of the sliding seat 210 is limited and guided through the cooperation between the first sliding parts 211 and the first sliding holes 110.

[0055] Preferably, two first sliding holes 110 are arranged on each side of the base 100, and two first sliding parts 211 are correspondingly arranged on each side of the sliding seat 210 (i.e. the door cover), and the two first sliding parts 211 located on the same side of the sliding seat 210 are arranged in a staggered manner, which can improve the reliability of the connection between the sliding seat 210 and the base 100 and improve the stability of the limitation of the movement of the sliding seat 210.

[0056] The cover body 220 is arranged on the sliding seat 210, and specifically, the cover body 220 is arranged on the outer side of the sliding seat 210. The cover body 220 is fixedly connected with the sliding seat 210, for example, threaded connection, hot melting connection, gluing connection, buckle connection and the like.

[0057] Preferably, a sealing element 230 is sleeved on the sliding seat 210, the sealing element 230 is located on the side of the cover body 220 facing the sliding seat 210, and when the door cover is in the closing position, the sealing element 230 abuts against the inner side of the vehicle body, so as to achieve the purpose of keeping sealing, thereby avoiding the rainwater and the like from entering through the gap between the door cover and the vehicle body and damaging the charging connector, and at the same time, the friction force between the sealing element and the vehicle body is used to achieve the purpose of reducing the abnormal sound caused by the vibration of the door cover. Optionally, the sealing element 230 is a sealing soft rubber.

[0058] As shown in Figure 4 , the driving assembly comprises a driving device 310 and a connecting rod mechanism.

[0059] The driving device 310 is arranged on the base 100 and is fixedly connected to the base 100, for example, by screwing. Alternatively, the driving device 310 is a driving motor, an actuator or the like. In this embodiment, the driving device 310 is an actuator.

[0060] The power input end of the connecting rod mechanism is in transmission connection with the power output shaft of the driving device 310, and the power output end is in transmission connection with the door cover. In the working state, the driving device 310 applies a force to the sliding seat 210 through the connecting rod mechanism to drive the sliding seat 210 to move, so as to achieve the purpose of opening or closing the charging port.

[0061] The driving assembly provided in this embodiment has a simple structure and a reasonable design.

[0062] As shown in Figure 1 , 2 , 3 and 4, the connecting rod mechanism includes a first connecting rod 320 and a second connecting rod 330.

[0063] The first end of the first connecting rod 320 is hingedly connected to the door cover. As shown in Figure 1 , 2 and 3, the first end of the first connecting rod 320 is hingedly connected to the sliding seat 210. The first end of the second connecting rod 330 is hingedly connected to the second end of the first connecting rod 320, the second end is rotatably connected to the base 100, and the second end of the second connecting rod 330 is in transmission connection with the power output shaft of the driving device 310.

[0064] Specifically, the base 100 is provided with a transmission shaft 350, the transmission shaft 350 is rotatably connected to the base 100, the second end of the second connecting rod 330 is fixedly sleeved on the transmission shaft 350, and the transmission shaft 350 is in transmission connection with the power output shaft of the driving device 310. Specifically, the transmission shaft 350 is provided with a first gear 351, the power output shaft of the driving device 310 is provided with a second gear 311, and the first gear 351 and the second gear 311 are in meshing engagement.

[0065] As shown in Figure 4 , in this embodiment, the first gear 351 and the second gear 311 are bevel gears, so as to save space, reduce speed and increase torque, and change the transmission direction of movement.

[0066] In the working state, the driving device 310 drives the second connecting rod 330 to rotate, so as to apply a force to the door cover through the first connecting rod 320 to drive the door cover to move from the closed position to the open position or from the open position to the closed position.

[0067] As shown in Figure 1 , 2The connecting rod mechanism further comprises a third connecting rod 340, which is arranged on the side of the first sliding hole 110 away from the sliding seat 210 and is in sliding connection with the base 100 so that the third connecting rod 340 can only move in a preset direction.

[0068] As shown in Figure 7 , 8 , 9, 10, specifically, the opposite sides of the base 100 are provided with sliding grooves 120, and the third connecting rod 340 is correspondingly provided with second sliding parts 342 matched with the sliding grooves 120, which are slidingly inserted into the sliding grooves 120.

[0069] Preferably, two sliding grooves 120 are arranged on each side of the base 100, and two second sliding parts 342 are correspondingly arranged on the third connecting rod 340. Through the cooperation of the two sliding grooves 120 and the two second sliding parts 342, the stability and reliability of the movement of the third connecting rod 340 are improved.

[0070] The two ends of the third connecting rod 340 are connected with the corresponding two first sliding parts 211.

[0071] In this embodiment, the side wall of the base 100 is clamped in the middle by the third connecting rod 340 and the sliding seat 210, so as to avoid the deformation of the side wall of the base 100 and the removal of the first sliding part 211 from the first sliding hole 110, thereby improving the reliability of the connection between the sliding seat 210 and the base 100.

[0072] As shown in Figure 3 , two connecting rod mechanisms are arranged, and the two connecting rod mechanisms are arranged on the opposite sides of the base 100 to improve the stability of the movement of the door cover driven by the driving assembly.

[0073] As shown in Figure 5 , the first sliding hole 110 is L-shaped, and the first sliding hole 110 comprises a first guide part 111 and a second guide part 112, the first end of the first guide part 111 is connected with and communicates with the first end of the second guide part 112, and the second end extends towards the opening of the base 100.

[0074] In this structure, during the movement of the door cover from the closed position to the open position, the first sliding part 211 first moves along the second end of the first guide part 111 to the first end, so that the sealing element 230 is separated from the side wall of the vehicle body, thereby preventing the sealing element 230 from being damaged during the movement of the door cover, and at the same time, the cover body 220 moves to the inner side of the vehicle body, so that the movement of the cover body 220 is not hindered by the vehicle body; then the first sliding part 211 moves along the first end of the second guide part 112 to the second end, so that the door cover moves to the open position.

[0075] During the movement of the door cover from the open position to the closed position, the first sliding portion 211 first moves along the second end of the second guide portion 112 toward the first end; and then moves along the first end of the first guide portion 111 toward the second end, thereby causing the door cover to move toward the opening close to the base 100, thereby causing the sealing element 230 to contact the inner side of the vehicle body to achieve the purpose of sealing. At the same time, the cover body 220 can also be flush with the outer side of the vehicle body to ensure aesthetics.

[0076] like Figure 2 As shown, a second sliding hole 341 adapted to the first sliding portion 211 is provided at a position corresponding to the third connecting rod 340 and the first sliding portion 211. The angle α between the length direction of the second sliding hole 341 and the length direction of the first sliding hole 110 is, where α is an acute angle. The first sliding portion 211 passes through the first sliding hole 110 and is inserted into the second sliding hole 341. In the working state, through the cooperation of the second sliding hole 341, the first sliding hole 110 and the first sliding portion 211, the driving assembly can apply a force to the first sliding portion 211 to drive the first sliding portion 211 to move along the length direction of the first sliding hole 110.

[0077] Specifically, during use, as the door cover moves from the closed position to the open position, the drive assembly applies a force to the first sliding portion 211 through the first inner wall of the second sliding hole 341. Under the action of the first guide portion 111, the first sliding portion 211 can only move along the length of the first guide portion 111. Consequently, the first sliding portion 211 moves toward the first end of the first guide portion 111, causing the door cover to move inward of the base 100, thereby separating the sealing element 230 from the vehicle body, thereby preventing damage to the sealing element 230 during movement of the door cover. Simultaneously, the cover body 220 moves inward of the vehicle body, thereby preventing the vehicle body from hindering the movement of the cover body 220. Once the first sliding portion 211 reaches the junction of the first guide portion 111 and the second guide portion 112, under the action of the second guide portion 112, the first sliding portion 211 can only move along the length of the second guide portion 112, thereby causing the door cover to move along the length of the second guide portion 112, thereby driving the door cover to the open position.

[0078] When the door cover moves from the opening position to the closing position, the driving assembly applies a force to the first sliding portion 211 through the second inner wall of the first sliding hole 110 (opposite to the first inner wall). Under the action of the second guide portion 112, the first sliding portion 211 can only move along the length direction of the second guide portion 112. When the first sliding portion 211 moves to the connection between the second guide portion 112 and the first guide portion 111, under the action of the first guide portion 111, the first sliding portion 211 can only move along the length direction of the first guide portion 111. Therefore, the first sliding portion 211 will move along the length direction of the first guide portion 111 in the direction close to the opening of the base 100, thereby causing the door cover to move in the direction close to the opening of the base 100, thereby causing the sealing element 230 to contact the inner side of the vehicle body to achieve the purpose of sealing. At the same time, it can also make the cover body 220 flush with the outer side of the vehicle body to ensure beautiful appearance.

[0079] The connecting rod mechanism of this structure not only enables the first sliding portion 211 to change direction between the first guide portion 111 and the second guide portion 112 , but also has a simple structure and a reasonable design.

[0080] like Figure 1 、 12 As shown, a touch switch 400 is provided on the base 100. The touch switch 400 and the drive device are both electrically connected to the controller. In the operating state, touching the touch switch 400 once activates the drive device 310 through the controller to drive the door cover from the closed position to the open position. Touching the touch switch 400 again activates the drive device 310 through the controller to drive the door cover from the open position to the closed position, thereby facilitating the opening and closing of the door cover.

[0081] like Figure 12 As shown, the base 100 is provided with an indicator light 500. In the working state, when the battery circuit is less than 20%, the indicator light 500 emits yellow light, when charging, the indicator light 500 emits red light, and when fully charged, the indicator light 500 emits green light. Optionally, the indicator light 500 is an RG tricolor light.

[0082] like Figure 9 As shown, a water hole 130 is provided on the bottom side wall of the base 100 . In the working state, when water enters the base 100 , the water flows out through the water hole 130 , thereby preventing water from accumulating in the base 100 .

[0083] The utility model also provides an electric vehicle, which includes the charging door assembly described in any of the above embodiments.

[0084] In the specification of the present invention, a large number of specific details are described. However, it is understood that the embodiments of the present invention can be practiced without these specific details. In some instances, well-known methods, structures and techniques are not shown in detail so as not to obscure the understanding of this specification.

[0085] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or make equivalent replacements for some or all of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention, and they should all be included in the scope of the claims and description of the present invention.

Claims

1. A charging door assembly, characterized in that: include: a base (100) which is hollow and has an opening; a door cover, which is arranged at the opening of the base (100), has a closing position and an opening position, and is slidably connected to the base (100) so that the door cover can only reciprocate between the closing position and the opening position along a preset direction; as well as A driving assembly is provided on the base (100) and is in transmission connection with the door cover. In a working state, the driving assembly drives the door cover to the closing position to close the charging port. In a non-working state, the driving assembly drives the door cover to the opening position to open the charging port.

2. The charging door assembly according to claim 1, characterized in that: The door cover comprises: a sliding seat (210) slidably connected to the base (100); and A cover body (220) is arranged on the sliding seat (210) and fixedly connected to the sliding seat (210).

3. The charging door assembly according to claim 2, characterized in that: The door cover further comprises a sealing element (230), the sealing element (230) being sleeved on the side wall of the sliding seat (210), and when the door cover is in the closed position, the sealing element (230) is in contact with the inner side of the vehicle body.

4. The charging door assembly according to any one of claims 2-3, characterized in that: The drive assembly includes: a driving device (310), which is disposed on the base (100) and fixedly connected to the base (100); and A connecting rod mechanism, wherein a power input end thereof is transmission-connected to a power output shaft of the driving device (310), and a power output end thereof is transmission-connected to the door cover.

5. The charging door assembly according to claim 4, characterized in that: The connecting rod mechanism comprises: A first connecting rod (320), a first end of which is hinged to the door cover; and A second connecting rod (330) has a first end hinged to the second end of the first connecting rod (320), a second end rotatably connected to the base (100), and a second end drivingly connected to the power output shaft of the driving device (310).

6. The charging door assembly according to claim 5, characterized in that: Two first sliding holes (110) are provided on each side of the base (100), and a first sliding portion (211) corresponding to the two first sliding holes (110) is provided on each side of the door cover, and the two first sliding portions (211) located on the same side are staggered.

7. The charging door assembly according to claim 6, characterized in that: The linkage mechanism further includes a third linkage (340), which is arranged on a side of the first sliding hole (110) away from the sliding seat (210), and the third linkage (340) is slidably connected to the base (100) so that the third linkage (340) can only move along a preset direction, and the two ends of the third linkage (340) are respectively connected to the corresponding two first sliding parts (211).

8. The charging door assembly according to claim 7, characterized in that: The first sliding hole (110) is L-shaped, and comprises a first guide portion (111) and a second guide portion (112). The first end of the first guide portion (111) is connected to the first end of the second guide portion (112), and the second end extends in a direction close to the opening of the base (100).

9. The charging door assembly according to claim 8, characterized in that: A second sliding hole (341) adapted to the first sliding part (211) is provided at a position corresponding to the third connecting rod (340) and the first sliding part (211). The included angle between the length direction of the second sliding hole (341) and the length direction of the first sliding hole (110) is α, wherein α is an acute angle. The first sliding part (211) passes through the first sliding hole (110) and is inserted into the second sliding hole (341).

10. An electric vehicle, characterized in that: It comprises the charging door assembly described in any one of claims 1-9.