Built-in electric vehicle charging structure

Abstract

The invention discloses a built-in electric vehicle charging structure which comprises a charger and a seat cask, a storage cavity is formed in the seat cask, a charging port connected with an electric vehicle storage battery and a charger fixing area corresponding to the charger are arranged in the storage cavity, and the charger is detachably connected in the charger fixing area. The side wall of the storage cavity is provided with an air exchange port communicated with the outside and a wire groove for an external wire harness of the charger to pass through in a penetrating mode. The charger can be arranged in the seat barrel and is electrically connected with a charging port of a storage battery of the electric vehicle and an external power supply through an external wire harness, so that the anti-theft and storage functions of the charger are realized, a user can charge the electric vehicle without additionally carrying the charger when going out, and the travel convenience is improved; the shielding protection of the charger is also realized, and the erosion of external impurities to the charger is reduced; and exchange between air in the seat cask and outside air is achieved through the air exchange port, heat dissipation of the charger in the storage cavity is facilitated, and the service life of the charger is prolonged.

Description

Technical Field

[0001] The present invention relates to the technical field of chargers, and in particular to a built-in charging structure for electric vehicles. Background Art

[0002] With the wide use of electric two-wheelers, users' requirements for the convenience and safety of using electric two-wheeler chargers are constantly increasing. In the existing market, the charger and the electric vehicle are set independently. On the one hand, the traditional independent charger is large in volume and long in wire, making it difficult to store. The space of some small electric vehicles or other devices is relatively limited, and it is not convenient to carry the charger when going out. On the other hand, most of the traditional independent chargers are exposed outdoors and are easily eroded by impurities such as rainwater and dust, which will affect the service life of the charger and even cause safety problems such as short circuits. At the same time, the charger generates a large amount of heat during the charging process. If the heat dissipation is poor, it will cause the internal components of the charger to be damaged by heat, accelerate the aging speed of the charger, and reduce the service life. Therefore, improvements are needed. Summary of the Invention

[0003] Aiming at the defects in the prior art that the traditional independent charger occupies a large space, is inconvenient to store, is easily eroded by impurities when exposed to the external environment for a long time, and has poor heat dissipation, affecting the service life of the charger, the present invention provides a new built-in charging structure for electric vehicles.

[0004] To solve the above technical problems, the present invention is realized through the following technical solutions:

[0005] A built-in charging structure for electric vehicles includes a charger and a seat bucket. The seat bucket is provided with a storage cavity. A charging port connected to the electric vehicle battery and a charger fixing area corresponding to the charger are arranged in the storage cavity. The charger is detachably connected in the charger fixing area. A ventilation opening communicating with the outside and a wire groove for the external wire harness of the charger to pass through are penetrated through the side wall of the storage cavity.

[0006] The charger can be built into the seat bucket. The charger is electrically connected to the charging port of the electric vehicle battery and the external power supply through the external wire harness, which not only facilitates the storage of the charger, realizes the anti-theft function of the charger, enables users to charge the electric vehicle without carrying an additional charger when going out, and improves the convenience of travel; but also realizes the shielding protection of the charger, reduces the erosion of the charger by external impurities, and is convenient for use; through the ventilation opening, the gas in the seat bucket is exchanged with the external gas, which is convenient for dissipating heat from the charger in the storage cavity and prolongs the service life of the charger.

[0007] Preferably, for the built-in electric vehicle charging structure described above, the charger fixing area includes positioning walls formed by partial inward extension of the two side walls of the storage cavity, and the positioning walls respectively limit the charger in the left-right direction;

[0008] The positioning walls are provided with buckles extending into the storage cavity, and the buckles and the bottom wall of the storage cavity limit the charger in the up-down direction;

[0009] The charger fixing area is provided with a positioning protrusion acting on the front side of the charger. The positioning protrusion is located on the bottom wall of the storage cavity, and the positioning protrusion and the side wall of the storage cavity limit the charger in the front-back direction.

[0010] The positioning protrusion, the positioning wall and the buckle realize the limitation of the charger at multiple positions, so that the charger can be stably fixed in the charger fixing area, improving the stability of the charger during riding and avoiding the collision of the charger due to bumps.

[0011] Preferably, for the built-in electric vehicle charging structure described above, the charger includes a housing, a circuit board and a fan located inside the housing. Ventilation windows are provided on both sides of the housing corresponding to the positioning walls. When the fan works, an air flow flowing through the circuit board is formed between the two ventilation windows; The ventilation openings are at least two and are arranged corresponding to the ventilation windows at the positioning walls.

[0012] Because the ventilation window and the ventilation opening are opposite to each other, the heat generated when the charger works can be accurately exported outward through the ventilation window and the ventilation opening by the fan, so that the inside of the charger can be effectively cooled, further improving the heat dissipation of the charger and being beneficial to extending the service life of the charger.

[0013] Preferably, for the built-in electric vehicle charging structure described above, the positioning protrusion has a certain elastic deformation amount for avoiding the entry and exit of the charger from the charger fixing area after deformation.

[0014] The positioning protrusion has a certain elastic deformation amount, so it can play a role in avoiding when the charger is put into the charger fixing area or taken out from the charger fixing area, improving the smoothness of the charger when disassembling and assembling in the seat bucket.

[0015] Preferably, for the built-in electric vehicle charging structure described above, the charger is provided with a power-on switch, and the charger fixing area is provided with a power-on switch triggering device. When the charger enters the charger fixing area and completes the limitation in the front-back, left-right and up-down directions, the power-on switch triggering device is coupled with the power-on switch and triggers the charger to start working.

[0016] Through the mutual cooperation of the power-on switch and the power-on switch triggering device, the charger can only work after being placed in the correct position, improving the safety during use.

[0017] Preferably, for the above-mentioned built-in electric vehicle charging structure, the power-on switch uses a Hall sensor, and the power-on switch triggering device uses an induction magnetic sheet.

[0018] By using the Hall sensor and the induction magnetic sheet to control the opening and closing of the charger through the Hall effect, it has the advantages of simple structure, convenient integration and maintenance, high safety, and fast response.

[0019] Preferably, for the above-mentioned built-in electric vehicle charging structure, the charger further includes a transformer, a first heat dissipation plate and a second heat dissipation plate. The transformer is electrically connected to the circuit board. The first heat dissipation plate is arranged above the transformer, and the second heat dissipation plate is arranged on the upper surface of the circuit board.

[0020] Through the first heat dissipation plate and the second heat dissipation plate, the heat generated by the transformer and the circuit board can be timely conducted outwards. At the same time, because the first heat dissipation plate is arranged above the transformer, it can more effectively dissipate the heat of the transformer in the charger.

[0021] Preferably, for the above-mentioned built-in electric vehicle charging structure, several cushion blocks and several limit posts for fixing the circuit board are arranged at the bottom of the housing. The cushion blocks and the limit posts support the lower end of the circuit board. A partition plate is arranged at the bottom of the housing between the circuit board and the fan. The upper end of the partition plate is higher than the upper end of the circuit board, and together with the housing and the circuit board, potting areas are formed on both sides of the circuit board. The potting areas are filled with insulating and heat-conducting glue.

[0022] The circuit board is suspended in the housing through the cushion blocks and the limit posts. By filling the insulating and heat-conducting glue into the potting areas, the reinforcement of the circuit board is realized, and it is also convenient to conduct the heat generated on the circuit board outwards, further improving the heat dissipation performance of the charger.

[0023] Preferably, for the above-mentioned built-in electric vehicle charging structure, the housing includes an upper cover and a lower cover. A wire clamping notch for the external wire harness of the charger to pass through is opened at the end corner of the lower cover. A wire covering plate inserted into the wire clamping notch is arranged on the upper cover, and the wire covering plate presses on the external wire harness of the charger.

[0024] Through the wire clamping notch and the wire covering plate, the pressing and fixing of the external wire harness on the charger are realized. At the same time, through the wire clamping notch, the space for the internal and external air exchange of the housing is also increased, facilitating the heat dissipation of the charger.

[0025] Preferably, for the built-in electric vehicle charging structure described above, an arc-shaped plate is provided at the bottom of the charger. The arc-shaped plate arches towards the partition plate, and the outer side of the arc-shaped plate is attached to the partition plate. An installation area is formed by the partition plate, the arc-shaped plate and the inner wall of the housing. The fan is located in the installation area, and an air outlet communicating with the installation area is penetrated on the side wall of the arc-shaped plate.

[0026] The installation area realizes the limit protection of the fan. At the same time, the arc-shaped plate and the air outlet are more conducive to the gas flow inside the housing, further improving the heat dissipation performance of the charger. Description of the Drawings

[0027] Figure 1 is a schematic structural diagram of the present invention;

[0028] Figure 2 is a cross-sectional view of the charger of the present invention installed in the charger fixing area;

[0029] Figure 3 is a cross-sectional view of the seat bucket of the present invention;

[0030] Figure 4 is an exploded structural diagram of the charger of the present invention;

[0031] Figure 5 is an exploded structural diagram of the charger of the present invention from another perspective;

[0032] Figure 6 is a cross-sectional view of the charger of the present invention.

[0033] Description of the Reference Numerals: 1. Charger; 10. Housing; 100. Ventilation Window; 101. Upper Cover; 102. Lower Cover; 11. Circuit Board; 111. Power-on Switch; 12. Fan; 13. Transformer; 14. First Heat Dissipation Plate; 15. Second Heat Dissipation Plate; 16. Arc-shaped Plate; 161. Air Outlet; 2. Seat Bucket; 21. Storage Chamber; 22. Ventilation Opening; 23. Wire Groove; 3. Charger Fixing Area; 31. Positioning Wall; 311. Buckle Plate; 32. Positioning Projection; 33. Power-on Switch Triggering Device; 4. Spacer; 41. Limit Post; 42. Partition Plate; 5. Glue Filling Area; 6. Wire Clamping Notch; 7. Wire Covering Plate; 8. Installation Area. Detailed Embodiments

[0034] The following will further describe the present invention in detail in conjunction with the attached Figure 1-6 drawings and specific embodiments, but they are not limitations to the present invention:

[0035] Embodiment 1

[0036] Refer to Figures 1 to 3As shown in the figure, the present invention discloses a built-in electric vehicle charging structure, which includes a charger 1 and a seat bucket 2 located under the seat of the electric vehicle. The seat bucket 2 has a storage cavity 21. Inside the storage cavity 21, there is a charging port for connecting the electric vehicle battery and a charger fixing area 3 for fixing the charger 1. And a ventilation opening 22 communicating with the outside is penetrated through the side wall of the storage cavity 21 and a wire groove 23 for the external wire harness of the charger 1 to pass through. The ventilation opening 22 is used for the air circulation inside and outside the storage cavity 21 for heat dissipation.

[0037] As mentioned above, the external wire harness of the charger 1 includes the input wire and the output wire of the charger 1. Among them, a detachable connection is adopted between the charger 1 and the charger fixing area 3, and the output wire of the charger 1 is connected to the above-mentioned charging port.

[0038] When the charger 1 is placed inside the storage cavity 21, the charger 1 is fixed in the charger fixing area 3, and its input wire passes through the wire groove 23 and extends out of the storage cavity 21 for connecting an external power supply. When used for outdoor charging, it can prevent rainwater from entering the charger 1 and also play a role in anti-theft of the charger 1.

[0039] When the charger 1 is placed outside the storage cavity 21, its output wire passes through the wire groove 23 and extends into the inner side of the storage cavity 21 for connecting the charging port.

[0040] In some embodiments, to limit the position of the charger 1 inside the storage cavity 21, so that the charger 1 is in a specific position every time it is charged.

[0041] Such as Figure 2 、 Figure 3 As shown, the charger fixing area 3 includes positioning walls 31 formed by partially extending inward from the two side walls of the storage cavity 21. The positioning walls 31 respectively act on the charger 1 for left and right direction limiting; there are buckle plates 311 extending into the storage cavity 21 on the positioning walls 31, and the buckle plates 311 and the bottom wall of the storage cavity 21 form up and down direction limiting for the charger 1; there is a positioning protrusion 32 acting on the front side of the charger 1 inside the charger fixing area 3. The positioning protrusion 32 is located on the bottom wall of the storage cavity 21, and the positioning protrusion 32 and the side wall of the storage cavity 21 form front and back direction limiting for the charger 1.

[0042] Such as Figures 2 - 5 As shown, to avoid insufficient heat dissipation inside the storage cavity 21, resulting in potential safety hazards caused by overheating of the charger 1. The charger 1 includes a housing 10, a circuit board 11 and a fan 12 located inside the housing 10. Ventilation windows 100 are opened on both sides of the housing 10 corresponding to the positioning walls 31.

[0043] When the fan 12 is working, an air flow flowing through the circuit board 11 is formed between the two ventilation windows 100. At the same time, there are at least two ventilation openings 22 on the side wall of the storage cavity 21, and they are arranged corresponding to the ventilation windows 100 at the positioning walls 31.

[0044] For the convenience of the detachable connection between the charger 1 and the charger fixing area 3, the positioning protrusion 32 has a certain elastic deformation amount, which is used to avoid the charger 1 entering and exiting the charger fixing area 3 after deformation.

[0045] In some embodiments, to prevent the charger 1 from starting to work when the ventilation window 100 and the ventilation opening 22 of the storage cavity 21 are not aligned, which may affect heat dissipation. As Figure 2 , Figure 3 , Figure 5 shown, a power-on switch 111 is provided in the charger 1, and a power-on switch trigger device 33 is provided in the charger fixing area 3.

[0046] When the charger 1 enters the charger fixing area 3 and is limited in the front-back, left-right, and up-down directions, the power-on switch trigger device 33 is coupled with the power-on switch 111 to trigger the charger 1 to start working. Thus, it is ensured that the charger 1 starts to work only after the ventilation window 100 and the ventilation opening 22 are aligned, improving the safety during use.

[0047] Furthermore, the power-on switch 111 adopts a Hall sensor, and the power-on switch trigger device 33 adopts an induction magnetic sheet. The power-on switch 111 and the power-on switch trigger device 33 can also adopt an NFC coil and an NFC module in cooperation.

[0048] When the charger 1 is placed outside the storage cavity 21 for charging, the user can directly hold a card with an NFC coil or an induction magnetic sheet to directly start the charger 1.

[0049] When the charger 1 is placed inside the storage cavity 21, since the charger fixing area 3 limits the circumference of the charger 1, the inner wall of the storage cavity 21 will interfere with the arrangement of the input line and the output line of the charger 1. In some embodiments, as Figure 2 , Figure 4 shown, both the output line and the input line of the charger 1 are located at its front end, and on the side of the input line of the charger 1, a wire clamping notch 6 for bending and turning the input line is provided. The wire clamping notch 6 is located at the corner of the charger 1, partially communicating with the front side of the charger 1 and partially communicating with the side where the charger 1 abuts against the side wall of the storage cavity 21. To fix the input line, a wire covering plate 7 is provided at the corner of the charger 1. The wire covering plate 7 is L-shaped, and the wire covering plate 7 is inserted into the wire clamping notch 6 and pressed above the input line.

[0050] More specifically, as Figure 4 , Figure 6As shown, the bottom of the housing 10 is provided with a plurality of pads 4 and a plurality of limiting posts 41 for fixing the circuit board 11. The pads 4 and the limiting posts 41 support the lower end of the circuit board 11. A partition plate 42 is arranged at the bottom of the housing 10 between the circuit board 11 and the fan 12. The upper end of the partition plate 42 is higher than the upper end of the circuit board 11, and together with the housing 10 and the circuit board 11, glue filling areas 5 are formed on both the upper and lower sides of the circuit board 11. The glue filling areas 5 are filled with insulating and heat-conducting glue.

[0051] On the one hand, the insulating and heat-conducting glue in the glue filling areas 5 can fix the circuit board 11, and on the other hand, it can insulate and seal the circuit board 11 for protection, avoiding problems such as short circuits of the circuit board 11 caused by water vapor condensation, and can also evenly distribute heat to the entire circuit board 11, further improving the heat dissipation performance of the charger 1.

[0052] A grid-shaped reinforcing rib is integrally formed on the inner wall of the housing 10. Through the reinforcing rib, the housing 10 is strengthened to prevent the insulating and heat-conducting glue in the glue filling areas 5 from deforming due to temperature rise after curing.

[0053] As Figures 4 - 6 shown, the charger 1 further includes a transformer 13, a first heat dissipation plate 14 and a second heat dissipation plate 15. The transformer 13 is electrically connected to the circuit board 11. The first heat dissipation plate 14 is fixed above the transformer 13, and the second heat dissipation plate 15 is fixed on the upper surface of the circuit board 11.

[0054] An arc-shaped plate 16 is integrally formed in the charger 1 between the partition plate 42 and the wire clamping notch 6. The arc-shaped plate 16 arches towards the partition plate 42, and the outer side of the arc-shaped plate 16 is in contact with the partition plate 42. The partition plate 42, the arc-shaped plate 16 and the inner wall of the housing 10 enclose an installation area 8. The fan 12 is located in the installation area 8. An air blowing port 161 communicating with the installation area 8 is formed through the side wall of the arc-shaped plate 16.

[0055] Furthermore, the bottom of the installation area 8 is provided with a bottom support. The lower end of the fan 12 is in contact with the bottom support, and the fan 12 is supported and limited by the bottom support to prevent the fan 12 from shaking inside the charger 1. The fan 12 and the charger 1 can adopt a contact type structure, and the fan 12 is powered by contact conduction; or coils can be electrically connected inside the charger 1 and on the fan 12, and the fan 12 is powered by the principle of electromagnetic induction.

[0056] Through the arc-shaped plate 16 and the air blowing port 161, the gas flow inside the housing 10 is facilitated. The number of the second heat dissipation plates 15 is two and they are distributed along the length direction on the upper surface of the circuit board 11. The second heat dissipation plate 14 and the second heat dissipation plate 15, together with the fan 12, can quickly conduct the heat generated when the charger 1 works outwards in time, further improving the heat dissipation performance of the charger 1.

[0057] In the description of the present application, it should be understood that the orientation or positional relationship indicated by terms such as "front and back", "left and right", "up and down", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the inventive product is usually placed during use. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying 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 used as a limitation on the specific installation position of the charger 1 in the seat bucket 2.

[0058] In summary, the above are only the preferred embodiments of the present invention, and all equivalent changes and modifications made within the scope of the patent application of the present invention shall fall within the scope covered by the present invention.

Claims

1. A built-in electric vehicle charging structure, comprising a charger (1) and a seat bucket (2), wherein the seat bucket (2) has a storage cavity (21), characterized in that: The storage cavity (21) is provided with a charging port connected to a battery of the electric vehicle and a charger fixing area (3) corresponding to the charger (1); the charger (1) is detachably connected to the charger fixing area (3); and the side wall of the storage cavity (21) is penetrated by a ventilation port (22) connected to the outside and a wire groove (23) for passing an external wire harness of the charger (1).

2. The built-in electric vehicle charging structure according to claim 1, characterized in that: The charger fixing area (3) includes positioning walls (31) formed by partially extending inwardly from the side walls of both sides of the storage cavity (21), and the positioning walls (31) act on the charger (1) to limit the position in the left and right directions respectively; The positioning wall (31) is provided with a buckle plate (311) extending into the storage cavity (21), and the buckle plate (311) and the bottom wall of the storage cavity (21) form a vertical limit for the charger (1); The charger fixing area (3) has a positioning protrusion (32) acting on the front side of the charger (1); the positioning protrusion (32) is located on the bottom wall of the storage cavity (21); the positioning protrusion (32) and the side wall of the storage cavity (21) form a front-to-back direction limit for the charger (1).

3. The built-in electric vehicle charging structure according to claim 2, characterized in that: The charger (1) comprises a shell (10) and a circuit board (11) and a fan (12) located in the shell (10); ventilation windows (100) are provided on both sides of the shell (10) corresponding to the positioning wall (31); when the fan (12) is working, an airflow passing through the circuit board (11) is formed between the two ventilation windows (100); and there are at least two ventilation ports (22), which are located at the positioning wall (31) and corresponding to the ventilation windows (100).

4. The built-in electric vehicle charging structure according to claim 2, characterized in that: The positioning protrusion (32) has a certain elastic deformation amount, and is used to avoid the charger (1) from entering and exiting the charger fixing area (3) after deformation.

5. The built-in electric vehicle charging structure according to claim 2, characterized in that: The charger (1) is provided with a power switch (111), and the charger fixing area (3) is provided with a power switch trigger device (33). When the charger (1) enters the charger fixing area (3) and completes the limit in the front-back, left-right, and up-down directions, the power switch trigger device (33) couples with the power switch (111) and triggers the charger (1) to start working.

6. The built-in electric vehicle charging structure according to claim 5, characterized in that: The power switch (111) adopts a Hall sensor, and the power switch trigger device (33) adopts an induction magnetic sheet.

7. The built-in electric vehicle charging structure according to claim 3, characterized in that: The charger (1) further comprises a transformer (13), a first heat sink (14) and a second heat sink (15); the transformer (13) is electrically connected to the circuit board (11); the first heat sink (14) is arranged above the transformer (13); and the second heat sink (15) is arranged on the upper surface of the circuit board (11).

8. The built-in electric vehicle charging structure according to claim 3, characterized in that: The bottom of the shell (10) is provided with a plurality of pads (4) and a plurality of limiting columns (41) for fixing the circuit board (11); the pads (4) and the limiting columns (41) support the lower end of the circuit board (11); the bottom of the shell (10) is provided with a partition plate (42) located between the circuit board (11) and the fan (12); the upper end of the partition plate (42) is higher than the upper end of the circuit board (11), and the partition plate (42) is surrounded by the shell (10) and the circuit board (11) to form a glue filling area (5) located on the upper and lower sides of the circuit board (11); the glue filling area (5) is filled with insulating heat-conductive glue.

9. The built-in electric vehicle charging structure according to claim 8, characterized in that: The housing (10) comprises an upper cover (101) and a lower cover (102); a wire-holding notch (6) for allowing an external wire harness of the charger (1) to pass through is provided at an end corner of the lower cover (102); a wire-covering plate (7) inserted into the wire-holding notch (6) is provided on the upper cover (101); and the wire-covering plate (7) is pressed onto the external wire harness of the charger (1).

10. The built-in electric vehicle charging structure according to claim 9, characterized in that: The charger (1) is provided with an arc-shaped plate (16) at the bottom, the arc-shaped plate (16) is arched towards the direction close to the partition plate (42) and the outer side of the arc-shaped plate (16) is in contact with the partition plate (42), the partition plate (42), the arc-shaped plate (16) and the inner wall of the shell (10) surround to form an installation area (8), the fan (12) is located in the installation area (8), and the side wall of the arc-shaped plate (16) is penetrated with an air outlet (161) which is connected with the installation area (8).

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