Direct-current wall-mounted charging pile and use method

Abstract

The invention discloses a direct-current wall-mounted charging pile and a using method, the direct-current wall-mounted charging pile comprises a wall-mounted structure, a closed structure and a main body structure, the wall-mounted structure is fixed to a wall, the closed structure is fixedly arranged on the wall-mounted structure, and the main body structure is fixedly arranged on the closed structure. The device has the beneficial effects that installation is convenient and fast, safety and stability are high, equipment charging gun protection and internal module installation and heat dissipation applicability are high, installation can be completed by sliding operation of the sliding set, installation time and labor cost are greatly saved, screw installation is not needed, stress is dispersed through multiple clamping and locking points, and the installation efficiency is improved. The charging box can be fixed on the wall more firmly; and meanwhile, the charging box cannot be disassembled through external single sliding unlocking, so that the charging box is effectively prevented from being randomly disassembled by non-professional personnel or malicious personnel, and the safety of the equipment is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of charging pile equipment, and particularly to a DC wall-mounted charging pile and a usage method thereof. Background Art

[0002] A DC charging pile, as the name implies, directly charges the battery of an electric vehicle with direct current. It has a large charging power, a strong current, and a relatively fast charging speed. With the popularization and application of new energy vehicles, some vehicle owners install corresponding charging piles in their homes or garages for convenient charging, and most of them are wall-mounted charging piles to reduce the occupied parking space area. However, the existing wall-mounted ones mostly use manual screwing for fixation, with cumbersome operations. Moreover, the charging guns are mostly set outside and can be randomly taken and placed, which is not safe. At the same time, the electrical modules, metering modules, etc. inside the charging box are mostly fixed on the inner back panel of the box body, affecting heat dissipation and being inconvenient to adjust the installation position according to requirements. Summary of the Invention

[0003] The technical problem to be solved by the present invention is: aiming at the defects of the prior art, to provide a DC wall-mounted charging pile and a usage method thereof, and this device solves the problems of cumbersome installation, charging gun protection, and reasonable planning of internal electrical components.

[0004] To achieve the above object, the present invention provides the following technical solution: A DC wall-mounted charging pile, comprising a wall-mounted structure, a closing structure, and a main body structure. The wall-mounted structure is fixed to the wall, the closing structure is fixedly arranged on the wall-mounted structure, and the main body structure is fixedly arranged on the closing structure. The wall-mounted structure is used for fixing and supporting on the wall, the closing structure is used for connecting the wall-mounted structure and the main body structure, and the main body structure can be docked or separated from the wall-mounted structure through the closing structure. The main body structure and the wall-mounted structure can be separated for storing the charging gun.

[0005] Preferably, the wall-mounted structure includes a wall base, a storage box, a pair of slideways, and a pair of locking units; the wall base is convex, the wall base is fixed to the wall, rectangular openings are formed on both the upper and lower side walls of the wall base, and a T-shaped locking groove is communicated and opened on the right side wall of the rectangular opening. The rectangular opening and the locking groove are respectively symmetrically staggered on the left and right sides of the center line. The length of the locking groove on the lower wall of the wall base is less than the length of the locking groove on the upper wall. The storage box is a box body without a front side, and an installation opening communicating with the left and right side walls is formed in the middle of the rear side wall of the storage box. A gun groove is formed on the lower wall of the storage box. Both of the pair of slideways are concave, and insertion openings corresponding to the rectangular openings are respectively formed in the middle of the slideways. The pair of slideways are respectively fixedly arranged in the installation opening and are symmetrically arranged on the upper and lower sides. The pair of slideways are respectively movably sleeved on the upper and lower ends of the wall base. The pair of locking units are respectively fixedly arranged at the rear side inside the storage box and correspond to the insertion openings respectively.

[0006] Preferably, the latching unit includes a top seat, a top rod, and a spring; the top seat is concave, and one end of the top seat is provided with a telescopic opening corresponding to the socket. The top seat is fixedly arranged on the rear side wall of the storage box, and the telescopic opening is located above the socket. One end of the top rod movably penetrates through the telescopic opening, and the other end of the top rod movably penetrates through the socket, and the other end of the top rod is movably inserted into the rectangular opening. One end of the spring is fixedly inserted into one end of the top rod, and the other end of the spring is fixedly connected to the other end of the top seat.

[0007] Preferably, the closing structure includes a pair of first transfer arms, an electric slide rail, a second transfer arm, a pair of fork arms, a carriage, a slider, a third transfer arm, and a fourth transfer arm; one ends of the pair of first transfer arms are respectively fixedly arranged on the left side wall of the storage box and are corresponding near the upper and lower ends. The electric slide rail is fixedly arranged on the pair of first transfer arms. One end of the second transfer arm is fixedly arranged on the left side wall of the storage box and is located above the electric slide rail. The middle parts of the pair of fork arms are movably connected by a pin shaft, and the fork arms are relatively flipped through the pin shaft. One ends of the pair of fork arms are respectively movably connected to the electric slide rail and the first transfer arm. The carriage is concave. The slider is movably inserted into the carriage, and the slider moves up and down in the carriage. One end of the carriage is movably connected to the other end of one of the fork arms. One end of the third transfer arm is movably connected to the other end of the other fork arm. One end of the fourth transfer arm is fixedly arranged on the front side wall of the top of the carriage.

[0008] Preferably, the main body structure includes a charging box, a back plate, a door body, an intelligent lock, a pair of power buttons, a control button, a display screen, a mounting unit, and a charging gun; the charging box is a box without a front side wall, and a plate groove penetrating the upper wall and the lower wall is provided on the left side wall of the charging box. A muzzle is provided on the right side wall of the charging box, and the muzzle is located in front of the plate groove. A plurality of heat dissipation openings are provided on both the left and right side walls of the charging box. The back plate is movably inserted into the plate groove and fixed by bolts. The back plate divides the inside of the charging box into front and rear cavities. The door body is movably arranged on the left side wall of the charging box. The intelligent lock is fixedly arranged on the door body and is latched with the right side wall inside the charging box. The pair of power buttons are fixedly arranged on the front side wall of the door body. The control button is fixedly arranged in the middle of the door body. The display screen is fixedly arranged in the middle of the top of the door body. The mounting unit is detachably arranged on the front side wall of the back plate and is located inside the charging box. One end of the charging gun is connected to the muzzle part, and the gun head of the charging gun is movably embedded in the gun groove of the storage box.

[0009] Preferably, the installation unit includes a hanging plate, two pairs of upright columns and a plurality of fixing seats; the hanging plate is rectangular, and a plurality of adjustment slots are equidistantly formed on the left and right side walls of the hanging plate. A plurality of threaded holes are formed in the middle of the hanging plate, and the threaded holes correspond to the adjustment slots respectively. The hanging plate is detachably arranged on the front side wall of the back plate. One ends of the two pairs of upright columns are respectively fixedly arranged on the rear side wall of the hanging plate and located at the four corner positions. The other ends of the two pairs of upright columns are respectively arranged on the back plate through bolts. A plurality of the fixing seats are respectively movably sleeved in the adjustment slots, and a plurality of threaded holes are respectively formed through the middle of the fixing seats.

[0010] Preferably, the fixing seat moves left and right in the adjustment slot to adjust the installation position and installation spacing.

[0011] Preferably, a plurality of fixing seats are arranged in the adjustment slot.

[0012] A usage method of a DC wall-mounted charging pile includes the following steps: Step 1: Fix the wall seat on the wall at the corresponding position first; Step 2: Sleeve the storage box on the wall seat through the slideway, and then slide on the wall seat along the slideway. Respectively, with the help of two locking units, enter the rectangular opening and the locking groove in turn for staggered locking, so as to realize that it cannot be unlocked by single sliding after locking, and realize convenient installation and anti-theft; Step 3: Carry and install the corresponding DC charging electrical components (the internal transformer, current stabilizer, control board, air switch, etc. all adopt the existing technology) through the installation unit in the main body structure, which is beneficial to adjust the installation position and fixed spacing of the electrical components; Step 4: Power on the installed main body structure, and then set a password through the control key for unlocking before use; and after unlocking, the closing structure drives the fork arms to flip relative to each other to reduce the included angle, and then the charging box can be moved away from the storage box; Step 5: Then the charging gun can be taken out from the gun slot for use, and the power on and power off are respectively controlled through the control key; Step 6: After charging is completed, cut off the power through the control key, store the charging gun in the gun slot, and then lock it by inputting the password, and then the charging box and the storage box can be closed. At this time, the charging gun cannot be taken out for protection.

[0013] Compared with the prior art, the beneficial effects of the present invention are: 1. The charging box is installed using a simple sliding sleeve, avoiding the cumbersome process of traditional screw installation; screw installation usually requires tools and precise alignment of holes, making the operation relatively complex, while the sliding sleeve only requires a sliding operation to complete the installation, greatly saving installation time and labor costs; for example, in large-scale charging pile installation projects, using the sliding sleeve method can improve installation efficiency and quickly complete the installation of multiple charging boxes.

[0014] 2. Since screw installation is not required, ordinary personnel can complete the wall-mounted installation of the charging box after simple training, reducing the requirements for the professional skills of installers; this makes the installation process more popular and convenient, and even in some emergency situations, the installation of the charging box can be quickly completed.

[0015] 3. Alternating locking and placement are carried out by means of interlaced locking grooves and spring-assisted locking units, which increases the stability of the charging box installation; multiple locking points disperse the force, enabling the charging box to be more firmly fixed to the wall; at the same time, it cannot be disassembled by external single sliding unlocking, effectively preventing non-professional or malicious personnel from randomly disassembling the charging box and improving the security of the equipment; for example, charging boxes installed in public places may be damaged or lost if they are easily disassembled, and the alternating locking design can avoid this situation.

[0016] 4. The device realizes the storage or picking up of the charging gun through the docking or separation of the charging box and the storage box. When the charging gun is not in use, it can be stored in the charging box, avoiding the charging gun being exposed to the external environment, reducing the erosion of dust, rain, etc. on the charging gun, and extending the service life of the charging gun; for example, in outdoor charging piles, the charging gun is often exposed to harsh weather conditions and is easily damaged, while the storage function can effectively protect the charging gun.

[0017] 5. The installation unit provided inside the charging box is conducive to the installation of internal electrical components and other modules; the installation unit can provide specific installation positions and structures, making the installation of electrical components more neat and orderly, facilitating wiring and maintenance; for example, when installing electrical components such as charging modules and control modules, quick positioning and installation can be carried out according to the design of the installation unit, improving installation efficiency.

[0018] 6. The installation position, spacing, etc. can be adjusted and changed, capable of adapting to electrical components of different specifications and sizes, enhancing the compatibility of the charging box with different internal modules; for example, as technology develops, the size and performance of charging modules may change, and the adjustable installation unit can easily adapt to these changes without large-scale modification of the charging box. Description of the Drawings

[0019] Figure 1Schematic diagram of the first assembly structure of the present invention; Figure 2 Schematic diagram of the second assembly structure of the present invention; Figure 3 Schematic diagram of the split structure of the wall-mounted structure; Figure 4 Schematic diagram of the assembled structure of the wall-mounted structure; Figure 5 Schematic diagram of the split structure of the closing structure; Figure 6 Schematic diagram of the assembled structure of the closing structure and the wall-mounted structure; Figure 7 Schematic diagram of the split structure of the main body structure; Figure 8 Schematic diagram of the assembled main body structure; Figure 9 Schematic diagram of the partial enlarged structure at position A of the present invention; Figure 10 Schematic diagram of the partial enlarged structure at position B of the present invention; Figure 11 Schematic diagram of the partial enlarged structure at position C of the present invention; Figure 12 Schematic diagram of the partial enlarged structure at position D of the present invention.

[0020] In the figure: 1. Wall-mounted structure, 11. Wall base, 12. Storage box, 13. Slideway, 14. Locking unit, 141. Top seat, 142. Top rod, 143. Spring, 2. Closing structure, 21. First transfer arm, 22. Electric slide rail, 23. Second transfer arm, 24. Fork arm, 25. Slide carriage, 26. Slide block, 27. Third transfer arm, 28. Fourth transfer arm, 3. Main body structure, 31. Charging box, 32. Back panel, 33. Door body, 34. Intelligent lock, 35. Power button, 36. Control button, 37. Display screen, 38. Installation unit, 381. Hanging plate, 382. Column, 383. Fixed seat, 39. Charging gun, 41. Rectangular opening, 42. Lock groove, 43. Installation opening, 44. Gun groove, 51. Socket, 52. Telescopic opening, 6. Plate groove, 7. Adjustment groove. Detailed implementation manners

[0021] The following will be further described in detail in conjunction with the appended Figures 1-8 of the embodiments of the present invention:

[0022] Please refer to Figures 1-12As shown in the figure, the present invention provides a technical solution: a DC wall-mounted charging pile, which includes a wall-mounted structure 1, a closing structure 2, and a main body structure 3. The wall-mounted structure 1 is fixed to the wall, the closing structure 2 is fixedly arranged on the wall-mounted structure 1, and the main body structure 3 is fixedly arranged on the closing structure 2. The wall-mounted structure 1 is used to be fixed on the wall for support, the closing structure 2 is used for connecting the wall-mounted structure 1 and the main body structure 3, and the main body structure 3 can be docked or separated from the wall-mounted structure 1 through the closing structure 2. The main body structure 3 and the wall-mounted structure 1 are separable for storing the charging gun 39.

[0023] As a preferred solution, furthermore, the wall-mounted structure 1 includes a wall base 11, a storage box 12, a pair of slideways 13, and a pair of locking units 14; the wall base 11 is convex, the wall base 11 is fixed to the wall, rectangular openings 41 are formed in both the upper and lower side walls of the wall base 11, and a T-shaped locking groove 42 is communicated with the right side wall of the rectangular opening 41. The rectangular opening 41 and the locking groove 42 are symmetrically staggered on the left and right sides of the center line. The length of the locking groove 42 on the lower wall of the wall base 11 is less than the length of the locking groove 42 on the upper wall. The storage box 12 is a box body without a front side, and an installation opening 43 communicating with the left and right side walls is formed in the middle of the rear side wall of the storage box 12. A gun groove 44 is formed in the lower wall of the storage box 12. Both of the pair of slideways 13 are concave, and insertion openings 51 corresponding to the rectangular openings 41 are respectively formed in the middle of the slideways 13. The pair of slideways 13 are respectively fixedly arranged in the installation opening 43 and are symmetrically arranged on the upper and lower sides. The pair of slideways 13 are respectively movably sleeved on the upper and lower ends of the wall base 11. The pair of locking units 14 are respectively fixedly arranged at the rear side inside the storage box 12 and are respectively corresponding to the insertion openings 51; the wall base 11 bears the storage box 12 to be fixed on the wall, and the slideways 13 on the storage box 12 and the wall base 11 are fixed through the locking units 14.

[0024] As a preferred solution, furthermore, the locking unit 14 includes a top seat 141, a top rod 142, and a spring 143; the top seat 141 is concave, and a telescopic opening 52 corresponding to the insertion opening 51 is formed at one end of the top seat 141. The top seat 141 is fixedly arranged on the rear side wall inside the storage box 12, and the telescopic opening 52 is located above the insertion opening 51. One end of the top rod 142 movably penetrates through the telescopic opening 52, the other end of the top rod 142 movably penetrates through the insertion opening 51, and the other end of the top rod 142 is movably inserted into the rectangular opening 41. One end of the spring 143 is fixedly inserted into one end of the top rod 142, and the other end of the spring 143 is fixedly connected to the other end of the top seat 141; the spring 143 applies a force to lower the top rod 142 on the top seat 141, and the top rod 142 penetrates through the slideway 13 and is inserted into the wall base 11 for fixation.

[0025] As a preferred solution, furthermore, the closing structure 2 includes a pair of first transfer arms 21, an electric slide rail 22, a second transfer arm 23, a pair of fork arms 24, a carriage 25, a slider 26, a third transfer arm 27, and a fourth transfer arm 28; one ends of the pair of first transfer arms 21 are respectively and fixedly arranged on the left inner wall of the storage box 12 and are corresponding near the upper and lower ends. The electric slide rail 22 is fixedly arranged on the pair of first transfer arms 21. One end of the second transfer arm 23 is fixedly arranged on the left inner wall of the storage box 12 and is located above the electric slide rail 22. The middle parts of the pair of fork arms 24 are movably connected by a pin shaft, and the fork arms 24 are relatively flipped through the pin shaft. One ends of the pair of fork arms 24 are respectively movably connected to the electric slide rail 22 and the first transfer arm 21. The carriage 25 is concave-shaped, and the slider 26 is movably inserted into the carriage 25, and the slider 26 moves up and down in the carriage 25. One end of the carriage 25 is movably connected to the other end of one of the fork arms 24. One end of the third transfer arm 27 is movably connected to the other end of the other fork arm 24. One end of the fourth transfer arm 28 is fixedly arranged on the front side wall of the top end of the carriage 25; the electric slide rail 22 drives one end of the fork arm 24 to relatively flip, and then the other end of the fork arm 24 moves up and down by means of the slider 26 in the carriage 25.

[0026] As a preferred solution, furthermore, the main body structure 3 includes a charging box 31, a back plate 32, a door body 33, an intelligent lock 34, a pair of power-on keys 35, a control key 36, a display screen 37, a mounting unit 38, and a charging gun 39; the charging box 31 is a box body without a front side wall, and a plate groove 6 penetrating the upper wall and the lower wall is formed on the left side wall of the charging box 31. A muzzle is formed on the right side wall of the charging box 31, and the muzzle is located in front of the plate groove 6. A plurality of heat dissipation openings are formed on both the left and right side walls of the charging box 31. The back plate 32 is movably inserted into the plate groove 6 and is fixed by bolts. The back plate 32 divides the inside of the charging box 31 into front and rear cavities. The door body 33 is movably arranged on the left side wall of the charging box 31. The intelligent lock 34 is fixedly arranged on the door body 33 and the intelligent lock 34 is locked with the right inner wall of the charging box 31. The pair of power-on keys 35 are fixedly arranged on the front side wall of the door body 33. The control key 36 is fixedly arranged in the middle of the door body 33. The display screen 37 is fixedly arranged in the middle of the top end of the door body 33. The mounting unit 38 is detachably arranged on the front side wall of the back plate 32 and is located inside the charging box 31. One end of the charging gun 39 is connected to the muzzle part, and the gun head of the charging gun 39 is movably embedded in the gun slot 44 of the storage box 12; the charging box 31 is isolated into two cavities by the back plate 32, which are respectively used for connecting the closing structure 2 and installing electrical components. The charging and power-off are controlled by the power-on keys 35. Information is displayed by the display screen 37. It is convenient to carry internal electrical components by the mounting unit 38, and the distance between each electrical component and the installation position fitting the electrical component are adjustable.

[0027] As a preferred solution, further, the installation unit 38 includes a hanging plate 381, two opposing columns 382 and a plurality of fixing seats 383; the hanging plate 381 is rectangular, and a plurality of adjusting grooves 7 are equidistantly formed on the left and right side walls of the hanging plate 381. A plurality of threaded holes are formed in the middle of the hanging plate 381, and the threaded holes correspond to the adjusting grooves 7 respectively. The hanging plate 381 is detachably arranged on the front side wall of the back plate 32. One ends of the two opposing columns 382 are respectively fixedly arranged on the rear side wall of the hanging plate 381 and located at the four corner positions. The other ends of the two opposing columns 382 are respectively arranged on the back plate 32 through bolts. A plurality of fixing seats 383 are respectively movably sleeved in the adjusting grooves 7, and a plurality of threaded holes are respectively formed through the middle of the fixing seats 383. The position and spacing of the electrical components to be installed are adjusted by moving the fixing seats 383 on the hanging plate 381.

[0028] As a preferred solution, further, the fixing seat 383 moves left and right in the adjusting groove 7 to adjust the installation position and installation spacing, and the fixed vacancies that fit the electrical components can be realized to enhance the practicability.

[0029] As a preferred solution, further, a plurality of fixing seats 383 are arranged in the adjusting groove 7, which can be set according to actual needs, and the spacing of the adjusting grooves 7 can also be set according to usage requirements.

[0030] Working principle: Step S1. First, the wall base 11 in the wall-mounted structure 1 is installed on the wall through expansion bolts; then the storage box 12 is sleeved on the wall base 11 through the slideway 13. As the slideway 13 in the installation port 43 slides and is sleeved on the wall base 11, one of the locking units 14 will first lock the slideway 13 and the wall base 11, and still slide after locking, and then the other locking unit 14 will lock, that is, the two locking units 14 respectively lock the staggeredly arranged locking grooves 42. Step S2. The ejector rod 142 in the locking unit 14 is acted on by the spring 143. When the rectangular opening 41, the insertion opening 51 and the telescopic opening 52 correspond, the ejector rod 142 descends in the telescopic opening 52 under the action of the spring 143, and one end of the ejector rod 142 passes through the insertion opening 51 and enters the rectangular opening 41. As the sliding ejector rod 142 moves from the rectangular opening 41 into the locking groove 42, through the two staggeredly arranged locking units 14 and the locking groove 42, it is impossible to unlock by a single reverse sliding after locking; if it is to be disassembled and unlocked, the storage box 12 can be manually pushed to move on the wall base 11 and the ejector rod 142 can be pushed to disengage it from the rectangular opening 41 and the locking groove 42. Step S3. After the wall-mounted structure 1 is installed and fixed, the corresponding charging gun 39 can be installed on the charging box 31, and at the same time, each electrical component is fixed in the charging box 31 in the main body structure 3 by means of the installation unit 38 for use. Step S4. Insert the backboard 32 into the board slot 6 for installation and fixation. Fix it on the backboard 32 through the upright column 382 on the hanging board 381, so that there is a certain distance between the hanging board 381 and the backboard 32. At the same time, install the fixing seat 383 in the adjustment slot 7 according to the usage requirements for adjusting the distance and mounting hole distance to fit different electrical components; after installation, lock the door body 33 with the intelligent lock 34 for anti-theft; Step S5. During use, input the password through the control key 36 or unlock it using an IC card of the existing technology. After unlocking, the display screen 37 will prompt various information, and the device drives the electric slide rail 22 supported by the first transfer arm 21 in the closing structure 2. The electric slide rail 22 drives one end of one of the fork arms 24 to move upward, causing the distance between one ends of the two fork arms 24 to decrease. Since both ends of a pair of fork arms 24 are movably connected, the two segments of the fork arm 24 will respectively flip on the electric slide rail 22, the second transfer arm 23, and the third transfer arm 27. At the same time, the fork arm 24 will also flip on the slider 26 and drive the slider 26 to lift and fit with the electric slide rail 22 in the carriage 25 fixed by the fourth transfer arm 28. Then, as the fork arms 24 move relatively closer, the charging box 31 is separated from the storage box 12; Step S6. Then, take out the gun head of the charging gun 39 from the gun slot 44 in the storage box to connect to the vehicle body, and control the power on or off by means of the power switch key 35; Step S7. When the charging is completed, place the charging gun 39 in the gun slot 44 for storage, and input the password again through the control key 36 to lock the device. The device can then dock and fit the charging box 31 with the storage box 12 through the closing structure 2 and lock and protect the charging gun.

[0031] 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. Other modifications or equivalent substitutions made by those of ordinary skill in the art to the technical solutions of the present invention should be covered within the scope of the claims of the present invention as long as they do not depart from the spirit and scope of the technical solutions of the present invention.

Claims

1. A DC wall-mounted charging pile, characterized in that: It includes a wall-mounted structure (1), a closing structure (2) and a main body structure (3). The wall-mounted structure (1) is fixed to the wall. The closing structure (2) is fixedly arranged on the wall-mounted structure (1). The main body structure (3) is fixedly arranged on the closing structure (2). The wall-mounted structure (1) is used for being fixed on the wall for support. The closing structure (2) is used for connecting the wall-mounted structure (1) and the main body structure (3). And the main body structure (3) can be docked with or separated from the wall-mounted structure (1) through the closing structure (2). The separation between the main body structure (3) and the wall-mounted structure (1) is used for storage.

2. The DC wall-mounted charging pile according to claim 1, wherein: The wall-mounted structure (1) includes a wall base (11), a storage box (12), a pair of slideways (13) and a pair of locking units (14); The wall base (11) is convex. The wall base (11) is fixed to the wall. Rectangular openings (41) are formed in both the upper and lower side walls of the wall base (11). And a T-shaped locking groove (42) is communicatedly formed in the right side wall of the rectangular opening (41). The rectangular opening (41) and the locking groove (42) are staggered and symmetrically arranged on the left and right sides of the center line respectively. The length of the locking groove (42) on the lower wall of the wall base (11) is less than the length of the locking groove (42) on the upper wall. The storage box (12) is a box body without a front side. And an installation opening (43) communicating with the left and right side walls is formed in the middle of the rear side wall of the storage box (12). A gun groove (44) is formed in the lower wall of the storage box (12). Both of the pair of slideways (13) are concave. And insertion openings (51) respectively corresponding to the rectangular openings (41) are formed in the middle of the slideways (13). The pair of slideways (13) are respectively fixedly arranged in the installation opening (43) and are symmetrically arranged on the upper and lower sides respectively. The pair of slideways (13) are respectively movably sleeved on the upper and lower ends of the wall base (11). The pair of locking units (14) are respectively fixedly arranged at the rear side inside of the storage box (12) and respectively correspond to the insertion openings (51).

3. The DC wall-mounted charging pile according to claim 2, wherein: The locking unit (14) includes a top seat (141), a top rod (142) and a spring (143); The top seat (141) is concave. And a telescopic opening (52) corresponding to the insertion opening (51) is formed at one end of the top seat (141). The top seat (141) is fixedly arranged on the rear side inner wall of the storage box (12). And the telescopic opening (52) is located above the insertion opening (51). One end of the top rod (142) movably penetrates through the telescopic opening (52). The other end of the top rod (142) movably penetrates through the insertion opening (51). And the other end of the top rod (142) is movably inserted into the rectangular opening (41). One end of the spring (143) is fixedly inserted into one end of the top rod (142). And the other end of the spring (143) is fixedly connected to the other end of the top seat (141).

4. The DC wall-mounted charging pile according to claim 3, wherein: The closing structure (2) includes a pair of first transfer arms (21), an electric slide rail (22), a second transfer arm (23), a pair of fork arms (24), a slide carriage (25), a slider (26), a third transfer arm (27) and a fourth transfer arm (28); One end of each of the pair of the first transfer arms (21) is fixedly arranged on the left inner wall of the storage box (12) and corresponds to the upper and lower ends respectively and is close to them. The electric slide rail (22) is fixedly arranged on the pair of the first transfer arms (21). One end of the second transfer arm (23) is fixedly arranged on the left inner wall of the storage box (12) and is located above the electric slide rail (22). The middle parts of the pair of fork arms (24) are movably connected by a pin shaft, and the fork arms (24) are relatively flipped through the pin shaft. One end of each of the pair of fork arms (24) is respectively movably connected to the electric slide rail (22) and the first transfer arm (21). The carriage (25) is concave. The slider (26) is movably inserted into the carriage (25), and the slider (26) moves up and down in the carriage (25). One end of the carriage (25) is movably connected to the other end of one of the fork arms (24). One end of the third transfer arm (27) is movably connected to the other end of the other fork arm (24). One end of the fourth transfer arm (28) is fixedly arranged on the front side wall of the top end of the carriage (25).

5. The DC wall-mounted charging pile according to claim 4, wherein: The main body structure (3) includes a charging box (31), a backboard (32), a door body (33), an intelligent lock (34), a pair of power-on keys (35), a control key (36), a display screen (37), a mounting unit (38), and a charging gun (39); The charging box (31) is a box body without a front side wall. A board slot (6) penetrating the upper wall and the lower wall is formed on the left side wall of the charging box (31). A muzzle is formed on the right side wall of the charging box (31), and the muzzle is located in front of the board slot (6). A plurality of heat dissipation openings are formed on both the left and right side walls of the charging box (31). The backboard (32) is movably inserted into the board slot (6) and fixed by bolts. The backboard (32) divides the interior of the charging box (31) into front and rear cavities. The door body (33) is movably arranged on the left side wall of the charging box (31). The intelligent lock (34) is fixedly arranged on the door body (33), and the intelligent lock (34) is latched with the right inner wall of the charging box (31). The pair of power-on keys (35) are fixedly arranged on the front side wall of the door body (33). The control key (36) is fixedly arranged in the middle of the door body (33). The display screen (37) is fixedly arranged in the middle of the top end of the door body (33). The mounting unit (38) is detachably arranged on the front side wall of the backboard (32) and is located inside the charging box (31). One end of the charging gun (39) is connected to the muzzle part, and the gun head of the charging gun (39) is movably embedded in the gun slot (44) of the storage box (12).

6. The DC wall-mounted charging pile according to claim 5, characterized in that: The installation unit (38) includes a hanging plate (381), two pairs of upright columns (382) and a number of fixing seats (383); the hanging plate (381) is rectangular, and a number of adjusting slots (7) are equidistantly arranged on the left and right side walls of the hanging plate (381). A number of threaded holes are provided in the middle of the hanging plate (381), and the threaded holes correspond to the adjusting slots (7) respectively. The hanging plate (381) is detachably arranged on the front side wall of the back plate (32). One ends of the two pairs of upright columns (382) are respectively fixedly arranged on the rear side wall of the hanging plate (381) and located at the four corner positions. The other ends of the two pairs of upright columns (382) are respectively arranged on the back plate (32) through bolts. A number of the fixing seats (383) are respectively movably sleeved in the adjusting slots (7), and a number of threaded holes are respectively penetrated through the middle of the fixing seats (383).

7. The DC wall-mounted charging pile according to claim 6, wherein: The fixing seat (383) moves left and right in the adjusting slot (7) to adjust the installation position and installation spacing.

8. The DC wall-mounted charging pile according to claim 7, wherein: A plurality of fixing seats (383) are arranged in the adjusting slot (7).

9. A method for using a DC wall-mounted charging pile, which is applied to a DC wall-mounted charging pile as described in claim 8, and is characterized in that: It includes the following steps: Step 1: Fix the wall seat (11) on the wall at the corresponding position first; Step 2: Sleeve the storage box (12) on the wall seat (11) through the slideway (13). Then, as the slideway (13) slides on the wall seat (11), the two locking units (14) are respectively used to sequentially enter the rectangular opening (41) and the locking groove (42) for staggered locking, so as to realize that it cannot be unlocked by a single slide after locking, realizing convenient installation and anti-theft; Step 3: Carry and install the corresponding DC charging electrical components through the installation unit (38) in the main body structure (3), which is beneficial to adjusting the installation position and fixing spacing of the electrical components; Step 4: Energize the installed main body structure (3), and then a password can be set through the control key (36) for unlocking required before use; and after unlocking, the closing structure (2) drives the fork arms (24) to relatively flip and reduce the included angle, so that the charging box (31) can be moved away from the storage box (12); Step 5: Then the charging gun (39) can be taken out from the gun slot (44) for use, and the power on and off can be respectively controlled through the control key (36); Step 6: After charging is completed, power off through the control key (36), store the charging gun (39) in the gun slot (44), and then lock it by entering the password, so that the charging box (31) can be closed with the storage box (12). At this time, the charging gun (39) cannot be taken out for protection.

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