Mobile charging device and mobile charging method

Abstract

The present invention discloses a movable charging device and a charging method. The movable charging device comprises: a housing provided in a mobile vehicle body; a charging port structural assembly, mounted in the housing cavity, comprising a mounting seat and a floating interface seat, wherein the floating interface seat can reciprocate along a first direction relative to the mounting seat; a plug assembly comprising a charging plug; the charging plug has pins adapted to the charging interface; and a driving mechanism connected to the charging plug, for driving the charging plug to extend and retract and move through the plug hole. The mobile vehicle body of the present invention charges an external device (electric vehicle) through a charging head. When the power of the mobile vehicle body is insufficient, it can be charged by another mobile vehicle body, thereby continuously charging the electric vehicle, avoiding multiple plugging and unplugging of the charging port of the electric vehicle, and making charging more convenient. The charging plug can also be driven by the driving mechanism to extend from the plug hole and plug into the charging interface of another movable charging device, thereby realizing automatic docking and charging.

Description

Technical Field

[0001] The present invention relates to the field of mobile charging technology, and in particular to a mobile charging device and a mobile charging method. Background Art

[0002] With the development of electric vehicles, there is a strong demand for electric vehicle charging, but currently it is difficult for charging piles to cover all parking spaces, causing trouble for charging.

[0003] However, when using traditional mobile charging devices to charge electric vehicles, the energy storage capacity of the mobile charging devices is usually not very large, making it difficult to fully charge the electric vehicle. It may be necessary to operate the mobile charging device multiple times to insert it into the charging port of the electric vehicle, and the charging may be intermittent due to multiple plugging and unplugging. Summary of the Invention

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention provides a portable charging device that is convenient for charging and does not require frequent plugging and unplugging of the charging port of the electric vehicle.

[0005] To achieve the above object, the technical solution adopted by the present invention is as follows:

[0006] A movable charging device comprises: a mobile body provided with a accommodating cavity, wherein the accommodating cavity is installed with a rechargeable battery, and the mobile body is provided with a charging head for charging an external device; a plug hole is opened on the side wall of the accommodating cavity; a charging port structural component, installed in the accommodating cavity, comprising a mounting seat and a floating interface seat, wherein the mounting seat is fixedly connected to the mobile body, the floating interface seat can reciprocate relative to the mounting seat in a first direction, and the floating interface seat is provided with a charging interface arranged outward; a plug assembly, movably inserted into the plug hole, comprising a charging plug; the charging plug has a pin adapted to the charging interface, and the charging plug can reciprocate relative to the mobile body in a second direction, the second direction being perpendicular to the first direction; a driving mechanism, installed in the accommodating cavity, connected to the charging plug, and used to drive the charging plug to extend and retract and movably pass through the plug hole; wherein the driving mechanism can drive the charging plug and the pin to extend from the plug hole and plug into the charging interface of another movable charging device to charge the other movable charging device.

[0007] Furthermore, the plug assembly also includes an alignment frame; the alignment frame is sleeved on the outer periphery of the charging plug; the floating interface seat is provided with a positioning frame groove on the outer periphery of the charging interface, and the positioning frame groove opening is set outward for the insertion of the alignment frame; and when the plug assembly is inserted into the floating interface seat of another movable charging device, the alignment frame is positioned and matched with the positioning frame groove so that the pin is aligned with the charging interface of the other movable charging device.

[0008] Furthermore, the first direction is a vertical direction, the second direction is a left-right horizontal direction, and the plug hole is provided on the front side of the mobile vehicle body.

[0009] Furthermore, the left and right sides of the charging plug extend backward with protruding plates extending out of the alignment frame, the rear ends of the two protruding plates are provided with a first outward flip plate, the left and right sides of the rear end of the alignment frame are provided with a second outward flip plate, and a first spring is provided between the first outward flip plate and the second outward flip plate.

[0010] Furthermore, the second outer flap has a first guide column extending rearward, and the first outer flap is provided with a first guide hole for the first guide column to pass through. The rear end of the first guide column passes through the first guide hole and is connected to a first limiting nut. The outline of the first limiting nut is larger than the first guide hole. The first spring is a compression spring sleeved on the first guide column, and the two ends of the compression spring are respectively against the first outer flap and the second outer flap.

[0011] Furthermore, the positioning frame groove is provided with a locking opening on the peripheral wall, and the alignment frame side wall is hinged with a buckle, and the buckle is retracted in a retracted state within the alignment frame and partially extended out of the alignment frame side wall in a locking state; when the front end of the alignment frame is inserted into the positioning frame groove of another movable charging device and abuts against the front side wall of the positioning frame groove, the charging plug continues to move forward relative to the alignment frame to push the buckle to switch from the retracted state to the locking state, so that the buckle in the locking state cooperates with the locking opening of the other movable charging device, thereby limiting the relative displacement of the alignment frame and the floating interface seat of the other movable charging device along the front-to-back direction; and after the charging plug pushes the buckle to the locking state, continuing to move forward can enable the pin to be inserted into the charging interface of the other movable charging device.

[0012] Furthermore, the side wall of the alignment frame is provided with a through hole for installing a buckle, the buckle is hinged to the through hole through a hinge shaft, and a torsion spring is installed on the hinge shaft to keep the buckle in a contracted state when not subjected to external force.

[0013] Furthermore, the left and right edges of the inner side of the plug hole are provided with rearward-protruding bumps, which are used to abut against the second outer flap to limit the travel of the alignment frame extending out of the plug hole; the left and right bumps are provided with a first elastic component for applying elastic force to the left and right sides of the alignment frame.

[0014] Furthermore, the charging port structural assembly also includes a second elastic assembly; the charging port structural assembly is installed on the rear side of the mobile vehicle body; the front end of the floating interface seat is connected to a connecting column and a sphere in sequence, and the floating interface seat can rotate along the sphere relative to the mounting seat; the mounting seat is provided with a mounting cavity with an opening at the rear end, and the front side wall of the mounting cavity is provided with a slide bar, the slide bar extends along a first direction, and the slide bar is provided with a slide groove for the sphere to move along the first direction, and the rear end of the slide groove is provided with an opening for the connecting column to extend out of the slide groove, and the width of the opening is greater than the width of the connecting column and smaller than the diameter of the sphere; the second elastic assembly is provided in plurality, circumferentially distributed on the peripheral wall of the mounting cavity, for applying an elastic force to the floating interface seat when squeezed.

[0015] The present invention also provides a mobile charging method, comprising the following steps:

[0016] Move the portable charging device to the device to be charged, and insert the charging head into the charging port of the device to be charged to charge the device;

[0017] When the power level of a mobile charging device is lower than a preset threshold, it is marked as a low-power charging device; another mobile charging device is driven to move next to the low-power charging device and the pin is inserted into the charging port of the low-power charging device to charge the low-power charging device.

[0018] The present invention has the following beneficial effects:

[0019] The mobile body charges the external device (electric vehicle) through the charging head. When the mobile body is low on power, it can be charged by another mobile body, thereby continuously charging the electric vehicle, avoiding repeated plugging and unplugging of the charging port of the electric vehicle, and charging is more convenient; and the driving mechanism can drive the charging plug to extend from the plug hole and plug into the charging interface of another mobile charging device to achieve automatic docking and charging.

[0020] In addition to the above-described objects, features and advantages, the present invention has other objects, features and advantages. The present invention will be further described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The accompanying drawings, which constitute part of this application, are intended to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are intended to explain the present invention and do not constitute an undue limitation of the present invention. In the accompanying drawings:

[0022] Figure 1 Schematic diagram of the external structure of the mobile charging device of the present invention;

[0023] Figure 2 is a schematic diagram of the external structure of the mobile charging device of the present invention from another perspective;

[0024] Figure 3 is an internal cross-sectional view of the mobile charging device of the present invention;

[0025] Figure 4 It is a structural diagram of the charging port structural components;

[0026] Figure 5 yes Figure 4 Schematic diagram of the decomposed state structure;

[0027] Figure 6 It is a structural diagram for installing vertical plates;

[0028] Figure 7 It is a schematic diagram of the exploded structure of the plug assembly;

[0029] Figure 8 It is a schematic diagram of the combined state structure of the plug assembly;

[0030] Figure 9 It is a structural schematic diagram of a movable charging device charging another movable charging device.

[0031] Figure 10 It is a schematic diagram of one of the state structures of the plug assembly during the process of inserting the charging port structural assembly;

[0032] Figure 11 yes Figure 10 A magnified view of point A;

[0033] Figure 12 It is a schematic diagram of one of the state structures of the plug assembly during the process of inserting the charging port structural assembly;

[0034] Figure 13 yes Figure 12 Magnified view of point B;

[0035] Figure 14 It is a schematic diagram of one of the state structures of the plug assembly during the process of inserting the charging port structural assembly;

[0036] Figure 15 yes Figure 14 Enlarged view of point C.

[0037] Legend:

[0038] Mobile body 100, accommodating cavity 110, plug hole 111, protrusion 112, charging gun 120, polygonal column 130, end seat 131, pulley 132, second compression spring 133, third limiting nut 134, charging socket 140, door cover 150;

[0039] Charging port structural assembly 200, mounting base 210, mounting cavity 211, slide bar 212, slide groove 213, opening 214, mounting riser 215, frame 216, cable hole 217, floating interface seat 220, charging interface 221, positioning frame groove 222, latching opening 223, positioning frame 224, expansion frame 225, connecting column 226, sphere 227, shielding frame 228, second elastic component 230, guide column 231, column head 232, first compression spring 233, second limiting nut 234;

[0040] Plug assembly 300, alignment frame 310, second outer flap 311, first guide post 312, first retaining nut 313, through-hole 314, charging plug 320, pin 321, extension plate 322, first outer flap 323, first guide hole 324, opening slot 325, strip-shaped opening 326, through-hole 327, first spring 330, buckle 340, hook portion 341;

[0041] Driving mechanism 400 , telescopic rod 410 , and limiting head 411 . DETAILED DESCRIPTION

[0042] It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0043] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0044] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0045] In addition, the descriptions of "first", "second", etc. in the present invention are for descriptive purposes only and should not be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of such features. In addition, the technical solutions between the various embodiments can be combined with each other, but this must be based on the fact that they can be implemented by ordinary technicians in this field. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0046] Please refer to Figures 1 to 8 A movable charging device in a preferred embodiment of the present invention includes a movable body 100, a charging port structural component 200, a plug component 300 and a driving mechanism 400.

[0047] A accommodating cavity 110 is provided in the mobile body 100, and a rechargeable battery is installed in the accommodating cavity 110. The mobile body 100 is provided with a charging gun 120 to charge external devices; a plug hole 111 is provided on the side wall of the accommodating cavity 110; it can be understood that the charging gun 120 is connected to the rechargeable battery to discharge the electrical energy of the rechargeable battery. The rechargeable battery can be a lithium iron phosphate battery, a ternary lithium battery or other rechargeable battery commonly used in the market. The mobile body 100 is provided with a charging socket 140 to cooperate with a fixed charging pile to achieve charging.

[0048] The charging port assembly 200 is mounted within the accommodating cavity 110 and includes a mounting base 210 and a floating interface base 220. The mounting base 210 is fixedly connected to the mobile body 100, while the floating interface base 220 is capable of reciprocating relative to the mounting base 210 in a first direction. The floating interface base 220 is provided with an outwardly facing charging interface 221. The charging interface 221 is positioned outward, i.e., its opening faces outward to facilitate insertion of an external plug structure. It is understood that to expose the charging interface 221, a clearance opening is also provided on the sidewall of the accommodating cavity 110, corresponding to the charging port assembly 200.

[0049] The plug assembly 300 is movably inserted into the plug hole 111 and includes a charging plug 320 . The charging plug 320 has a pin 321 adapted to the charging interface 221 . The pin 321 can extend out of the plug hole 111 . The charging plug 320 can move back and forth relative to the vehicle body 100 in a second direction, which is perpendicular to the first direction.

[0050] The driving mechanism 400 is installed in the accommodating cavity 110 and connected to the charging plug 320, and is used to drive the charging plug 320 to extend and move through the plug hole 111; Figure 9 As shown, the drive mechanism 400 can drive the charging plug 320 and pin 321 to extend from the plug hole 111 and connect with the charging interface 221 of another mobile charging device to charge the other mobile charging device. It can be understood that the charging plug 320 is connected to the rechargeable battery via a line to obtain electrical energy to charge the other mobile body 100, and the charging interface 221 is also connected to the rechargeable battery via a line to transmit the obtained electrical energy to the rechargeable battery to achieve charging.

[0051] The present invention provides a movable charging device, in which a mobile body 100 charges an external device (electric vehicle) through a charging gun 120. When the mobile body 100 is low on power, it can be charged by another mobile body 100, thereby continuously charging the electric vehicle, avoiding repeated plugging and unplugging of the charging port of the electric vehicle, damaging the charging port, and intermittent charging, which affects the battery life, and makes continuous charging more convenient; and the mobile body 100 can drive the pin 321 to extend from the plug hole 111 through the driving mechanism 400 and plug into the charging interface 221 of another mobile body 100, thereby realizing automatic docking and charging, and realizing automatic charging.

[0052] Reference Figure 4 and Figure 13 In some embodiments of the present invention, the plug assembly 300 further includes an alignment frame 310; the alignment frame 310 is sleeved around the outer periphery of the charging plug 320; the floating interface seat 220 is provided with a positioning frame groove 222 around the outer periphery of the charging interface 221, with the positioning frame groove 222 opening outwardly for insertion of the alignment frame 310; and when the plug assembly 300 is inserted into the floating interface seat 220 of another mobile charging device, the alignment frame 310 and the positioning frame groove 222 are positioned and engaged to align the pins 321 with the charging interface 221 of the other mobile charging device. The engagement of the positioning frame groove 222 and the alignment frame 310 improves the insertion accuracy of the pins 321 into the charging interface 221, preventing incorrect insertion.

[0053] Reference Figure 4 、 Figure 5 and Figure 6The charging port assembly 200 also includes a second elastic assembly 230. The charging port assembly 200 is mounted on the rear side of the mobile body 100. The rear side of the mobile body 100 is provided with a clearance opening to expose the charging interface 221. When the plug hole 111 is located on the front side of the mobile body 100, to charge another mobile charging device, the current mobile charging device only needs to be moved to the rear side of the other mobile charging device, align the plug hole 111 with the other mobile charging device, and then drive the pin 321 forward to plug into the charging interface 221. The front end of the floating interface seat 220 is connected in sequence to a connecting column 226 and a ball 227. The floating interface seat 220 can rotate relative to the mounting seat 210 along the ball 227. The mounting seat 210 has a mounting cavity 211 with an open rear end. The front sidewall of the mounting cavity 211 is provided with a slide bar 212. The slide bar 212 extends in a first direction and has a slot 213 for the ball 227 to move in the first direction. The first direction is a vertical direction, that is, the slot 213 and the slide bar 212 both extend in the vertical direction. The floating interface seat 220 utilizes the sliding cooperation between the ball 227 and the slot 213 to achieve sliding in the first direction. The rotation of the ball 227 then enables the floating interface seat 220 to rotate. This achieves both sliding and rotating movement, thereby increasing the adaptability of the floating interface seat 220. The floating interface seat 220 can not only accommodate charging plugs 320 at different heights, but also accommodate charging plugs 320 at a certain angle.

[0054] The rear end of the chute 213 defines an opening 214 through which the connecting post 226 extends. The width of the opening 214 is greater than the width of the connecting post 226 and smaller than the diameter of the sphere 227. The opening 214 extends vertically, allowing the connecting post 226 to swing up and down within the opening 214 as the floating interface 220 rotates and swings upward and downward, thus preventing structural interference with the connecting post 226. The width of the opening 214 is smaller than the diameter of the sphere 227, ensuring that the sphere 227 is confined within the chute 213 and prevented from escaping from the opening 214. The width of the opening 214 is greater than the width of the connecting post 226, allowing the connecting post 226 to rotate and swing left and right along the sphere 227 within a certain range. This increases the range of rotational motion, allowing the floating interface 220 to swing not only up and down but also left and right, making it more adaptable to the insertion of charging plugs 320 at different insertion angles. It should be understood that when the connecting post 226 is cylindrical, its width is equivalent to its diameter.

[0055] In some specific embodiments of the present invention, the mounting base 210 includes a mounting vertical plate 215 and a square frame 216 installed on the rear end face of the mounting vertical plate 215. The mounting cavity 211 is defined by the square frame 216 and the front end face of the mounting vertical plate 215, and the slide bar 212 is provided on the rear end face of the mounting vertical plate 215. The mounting base 210 is configured to be formed by connecting two parts, which facilitates the processing of the slide bar 212 and the slide groove 213 and reduces the processing difficulty. In addition, in order to facilitate the layout of the lines, a wire hole 217 is provided on the mounting vertical plate 215 for the lines connected to the charging interface 221 to pass through. In addition, the end faces of the upper and lower ends of the slide bar 212 are in contact with the upper and lower inner walls of the square frame 216, thereby achieving a certain positioning effect.

[0056] Specifically, the front side of the frame 216 is provided with a connecting side panel, which has corresponding holes for screw connection to the mounting riser 215. Furthermore, to facilitate installation of the interface structure within the accommodating cavity 110, the bottom of the mounting riser 215 is provided with a horizontal base plate, which has holes for fasteners to mount to the corresponding charging device.

[0057] There are multiple second elastic components 230, which are circumferentially distributed on the peripheral wall of the installation cavity 211, and are used to apply elastic force to the floating interface seat 220 when squeezed; so that the floating interface seat 220 can maintain a stable position when not subject to external force, which is convenient for alignment. Of course, the floating interface seat 220 is usually arranged to be aligned with the installation cavity 211. When not subject to external force, the center of the floating interface seat 220 is aligned with the center of the installation cavity 211.

[0058] Reference Figure 4 and Figure 5 In a further embodiment of the present invention, a positioning frame 224 is spaced apart from the outer periphery of the floating interface seat 220. The positioning frame 224 surrounds the outer periphery of the floating interface seat 220, and the positioning frame slot 222 is defined by the positioning frame 224 and the floating interface seat 220. The front end of the positioning frame 224 is fixedly connected to the front end of the floating interface seat 220 to seal the front side of the positioning frame slot 222, allowing the alignment frame 310 to abut against the front side wall of the positioning frame slot 222 when inserted. The second elastic component 230 contacts the positioning frame 224 to apply an elastic force to the floating interface seat 220. Furthermore, to increase the range within which the positioning frame 224 can receive the alignment frame 310, a rearwardly flared flared frame 225 is provided at the rear end of the positioning frame 224. This flared frame 225 can increase the range within which the alignment frame 310 can be inserted, allowing the alignment frame 310 to be misaligned with the positioning frame slot 222 (i.e., when the pin 321 is misaligned with the charging port 221). The flared frame 225 can further increase the receiving range. As the flared frame 225 gradually narrows forward, the alignment frame 310 is gradually aligned with the positioning frame slot 222. Furthermore, to block the gap between the flared frame 225 and the clearance opening of the mobile body 100, a blocking frame 228 can be provided at the rear end of the flared frame 225.

[0059] Reference Figure 4 and Figure 5 In a specific embodiment of the present invention, four second elastic components 230 are provided and are respectively installed on the four side walls of the square frame 216, thereby elastically supporting the floating interface seat 220 from four directions. The elastic support of the floating interface seat 220 in multiple directions allows it to maintain a stable state when not subjected to external forces. When the charging plug 320 is pulled out, the floating interface seat 220 can automatically reset to the center position of the installation cavity 211, facilitating the next insertion of the plug, and ensuring that the position of the charging port 221 relative to the mobile body 100 remains basically unchanged when the charging port 221 is in the waiting state.

[0060] Reference Figure 11 In a specific embodiment of the present invention, the second elastic component 230 includes a guide post 231, a post head 232, a first compression spring 233, and a second retaining nut 234. The guide post 231 is movably disposed through the peripheral wall of the installation cavity 211, that is, movably disposed through the side wall of the square frame 216. The peripheral wall of the installation cavity 211 (the side wall of the square frame 216) is provided with a guide hole adapted for the guide post 231. A stud 232 is located at the end of the guide post 231 facing the floating interface seat 220. The stud 232 has a larger cross-sectional profile than the guide post 231, meaning its diameter is greater than that of the guide post 231. A first compression spring 233 is sleeved around the guide post 231 and positioned between the stud 232 and the peripheral wall of the mounting cavity 211. The first compression spring 233 has a smaller diameter than the stud 232. The two ends of the first compression spring 233 respectively abut against the stud 232 and the peripheral wall of the mounting cavity 211, thereby providing an elastic force on the stud 232. The stud 232 is configured to contact the positioning frame 224. A second limiting nut 234 is mounted on the end of the guide post 231 extending out of the mounting cavity 211 and is used to limit the travel of the guide post 231. The second limiting nut 234 has a larger diameter than the guide hole, preventing it from passing through the peripheral wall of the mounting cavity 211, thereby limiting the travel of the elastic movement. A threaded shaft is provided at the end of the guide post 231 for connection to the second limiting nut 234.

[0061] In some embodiments of the present invention, the first direction is the vertical direction, the second direction is the horizontal direction, and the plug hole 111 is located on the front side of the mobile body 100 in the vertical direction, i.e., the up-down direction. This allows the charging plug 320 and the floating interface seat 220 to be adaptively adjusted in position when mated. The pins 321 can be adaptively adjusted in the left-right direction, and the charging interface 221 can be adaptively adjusted in the up-down direction. This allows the pins 321 and the charging interface 221 to be adaptively adjusted in position and then aligned if misaligned, thereby increasing the range of alignment and insertion.

[0062] Reference Figure 7 and Figure 8In a further embodiment of the present invention, the left and right sides of the charging plug 320 extend rearward with protruding plates 322 extending out of the alignment frame 310, and the rear ends of the two protruding plates 322 are provided with first outer flaps 323, which are perpendicular to the corresponding protruding plates 322, and the two first outer flaps 323 extend from the rear ends of the corresponding protruding plates 322 in a back-to-back direction to both sides, that is, the left first outer flap 323 extends from the rear end of the left protruding plate 322 to the left, and the right first outer flap 323 extends from the rear end of the right protruding plate 322 to the right; second outer flaps 311 are provided on the left and right sides of the rear end of the alignment frame 310, and the two second outer flaps 311 extend back to back from the rear end of the alignment frame 310, that is, the left second outer flap 311 extends from the left rear end of the alignment frame 310 to the left, and the right second outer flap 311 extends from the right rear end of the alignment frame 310 to the right. A first spring 330 is provided between the first outer flap 323 and the second outer flap 311, so that when the driving mechanism 400 drives the charging plug 320 to move forward, the first spring 330 drives the alignment frame 310 to move forward, and when the alignment frame 310 collides with the external structure, the first spring 330 can also play a certain elastic buffering role.

[0063] In a further embodiment of the present invention, a first guide post 312 extends rearward from the second outer flap 311. The first outer flap 323 defines a first guide hole 324 for the first guide post 312 to pass through. The rear end of the first guide post 312 passes through the first guide hole 324 and is connected to a first retaining nut 313. The first retaining nut 313 is larger than the first guide hole 324, thereby preventing the first guide post 312 from disengaging from the first guide hole 324. When the charging plug 320 retracts rearward into the accommodating cavity 110, the first outer flap 323 abuts against the first retaining nut 313, driving the alignment frame 310 rearward, thereby retracting the alignment frame 310. A first spring 330 is a compression spring sleeved around the first guide post 312. The ends of the compression spring abut against the first outer flap 323 and the second outer flap 311, respectively, to provide an elastic force. The first guide post 312 also provides a mounting location for the first spring 330.

[0064] Reference Figure 4 and Figure 7 In a further embodiment of the present invention, a latching opening 223 is provided on the peripheral wall of the positioning frame groove 222, and a latch 340 is hingedly connected to the side wall of the alignment frame 310. The latch 340 has a retracted state retracted in the alignment frame 310 and a latched state partially extending out of the side wall of the alignment frame 310. The forward and backward movement of the charging plug 320 relative to the alignment frame 310 can realize the state switching of the latch 340; when the front end of the alignment frame 310 is inserted into the positioning frame groove 222 of another mobile charging device and abuts against the front side wall of the positioning frame groove 222, the state is achieved as follows. Figure 10As shown in the state, the charging plug 320 then continues to move forward relative to the alignment frame 310 to push the buckle 340 to switch from the retracted state to the locked state, achieving Figure 12 In the state shown, the buckle 340 in the locked position cooperates with the locking port 223 of another movable charging device, thereby limiting the relative displacement of the alignment frame 310 and the floating interface seat 220 of another movable charging device in the front-to-back direction. At this time, the alignment frame 310 and the floating interface seat 220 cannot move relative to each other front-to-back, and their positions are locked. After the charging plug 320 pushes the buckle 340 to the locked position, the charging plug 320 continues to move forward to enable the pin 321 to be inserted into the charging interface 221 of another movable charging device, thereby realizing charging docking. In the process of inserting the pin 321 into the charging interface 221 of another movable charging device, the charging plug 320 always sticks to the buckle 340, so that the buckle 340 remains in the locked position to prevent its state from changing easily. Specifically, as Figure 13 As shown, the latch 340 has a protruding hook portion 341 on its side. When the latch 340 is in the locked position, the hook portion 341 engages with the locking opening 223, thereby preventing the alignment frame 310 from retreating relative to the floating interface seat 220. Furthermore, the charging plug 320 has a recessed slot with an open front end, into which the pin 321 is located. The recessed slot allows the floating interface seat 220 to be inserted, thereby reducing the overall front-to-back dimensions of the charging plug 320.

[0065] In a further embodiment of the present invention, the side wall of the alignment frame 310 is provided with a through hole 314 for installing the buckle 340. The buckle 340 is hinged to the through hole 314 via a hinge shaft, and a torsion spring is installed on the hinge shaft to keep the buckle 340 in a contracted state when no external force is applied. Figure 11 As shown, when the buckle 340 is in the retracted state, the buckle 340 corresponds to the position of the positioning frame groove 222 and can be embedded in the positioning frame groove 222 along with the alignment frame 310. Figure 10 and Figure 12 As shown, when the front end of the alignment frame 310 abuts against the front side wall of the positioning frame groove 222 of another portable charging device, the through opening 314 is partially aligned with the locking opening 223. At this time, the forward movement of the charging plug 320 can push the hook portion 341 of the buckle 340 to rotate into the locking opening 223.

[0066] Of course, in some other embodiments, the torsion spring can keep the buckle 340 in a locked state when not subject to external force. When inserted, since the hook portion 341 has an inclined guide surface, the hook portion 341 can elastically contract when it contacts the peripheral wall of the positioning frame groove 222 to avoid interference with the insertion structure.

[0067] In a further embodiment of the present invention, the left and right edges of the inner side of the plug hole 111 are provided with rearward-protruding protrusions 112, which are used to abut against the second outer flap 311 to limit the travel of the alignment frame 310 extending out of the plug hole 111; the left and right protrusions 112 are provided with a first elastic component, which is used to apply an elastic force to the left and right sides of the alignment frame 310, so that the plug assembly 300 can move elastically left and right, and when not subject to external force, it remains in the middle position of the plug hole 111.

[0068] The following combination Figures 10 to 15 , describing the insertion process of the plug assembly 300 into the floating interface seat 220 of another movable charging device.

[0069] First, the driving mechanism 400 drives the charging plug 320 and the alignment frame 310 to move forward together, and the front end of the alignment frame 310 protrudes from the charging plug 320. If the alignment frame 310 is misaligned with the positioning frame groove 222, the alignment frame 310 first contacts the flared frame 225 of the other movable charging device. If there is a left-right alignment deviation, the alignment frame 310 automatically adjusts its position left-right. If there is a height alignment deviation, the floating interface seat 220 automatically adjusts its position up and down. If there is an angle deviation, the floating interface seat 220 rotates along the sphere 227 to change the angle to adapt to the insertion angle of the alignment frame 310. As the alignment frame 310 continues to move forward, the alignment frame 310 is embedded in the positioning frame groove 222 of the other movable charging device, thereby realizing the alignment of the pin 321 of the charging plug 320 with the charging interface 221 of the other movable charging device, until the front end of the alignment frame 310 abuts against the front side wall of the positioning frame groove 222 of the other movable charging device, achieving Figure 10 State, at this time, the through opening 314 is partially aligned with the locking opening 223, the charging plug 320 continues to move forward and compresses the first spring 330 until the charging plug 320 contacts the buckle 340 and gradually switches the buckle 340 from the retracted state to the locked state, reaching Figure 12 In the state shown, the alignment frame 310 is locked with the floating interface seat 220 of another mobile charging device, and then the pin 321 is inserted into the charging interface 221 of the other mobile charging device. Usually, the resistance when the pin 321 is inserted into the charging interface 221 is large, which may cause the two mobile charging devices to move away. When the two mobile charging devices move away until the protrusion 112 abuts against the second outer flap 311, the position is reached. Figure 14 In the state shown, the two mobile charging devices cannot move further away. At this time, the driving mechanism 400 continues to push the charging plug 320 forward, so that the pin 321 can be inserted into the charging interface 221 of the other mobile charging device to achieve charging docking.

[0070] In a specific embodiment of the present invention, the first elastic component includes a polygonal column 130. The protrusion 112 is provided with a polygonal hole extending in the left-right direction, which is adapted to the contour of the polygonal column 130. The end of the polygonal column 130 facing the alignment frame 310 is provided with an end seat 131. A pulley 132 is rotatably mounted on the end seat 131. The rotation axis of the pulley 132 is arranged vertically, and the pulley 132 contacts the side wall of the alignment frame 310. When the alignment frame 310 moves forward and backward, the pulley 132 can reduce friction with the alignment frame 310, thereby preventing its forward and backward movement from being hindered. A second compression spring 133 is sleeved on the polygonal column 130. The second compression spring 133 is located between the protrusion 112 and the end seat 131, providing an elastic force to the end seat 131. The end of the polygonal column 130 facing away from the alignment frame 310 passes through the protrusion 112 and is connected to a third limiting nut 134, thereby limiting the elastic travel of the end seat 131. The cooperation between the polygonal hole and the polygonal column 130 prevents the polygonal column 130 from rotating, thereby keeping the rotation axis of the pulley 132 vertical, so that the pulley 132 can rotate and play a role when the alignment frame 310 is extended and retracted.

[0071] Reference Figure 7 The drive mechanism 400 can be a telescopic drive mechanism, such as a telescopic motor, an electric push rod, or other drive structure with telescopic drive capability. The drive mechanism 400 includes a telescopic rod 410 that can be extended and retracted. The end of the telescopic rod 410 is provided with a stopper 411 having a larger profile than the telescopic rod 410. An upper opening 325 is provided on the rear side of the charging plug 320. A strip-shaped opening 326 extending left and right is provided in the middle of the rear side wall of the opening 325. An upwardly extending opening 327 is provided in the middle of the strip-shaped opening 326. The stopper 411 is embedded in the opening 325 and can move left and right within the opening 325. The telescopic rod 410 passes through the opening 327 and enters the strip-shaped opening 326. The width of the strip-shaped opening 326 is greater than or equal to the diameter of the telescopic rod 410. The diameter of the stopper 411 is greater than the width of the strip-shaped opening 326. The telescopic rod 410 can move left and right along the strip-shaped opening 326. Of course, to reduce friction, the stopper 411 can be configured to be rotatably mounted on the end of the telescopic rod 410, thereby reducing sliding friction. To support the retracted alignment frame 310, a bottom support block is provided at the bottom of the accommodating chamber 110. The top surface of the bottom support block is flush with the lower edge of the plug hole 111. Of course, a door cover 150 can also be hinged to the upper edge of the plug hole 111. Once the plug assembly 300 is retracted into the accommodating chamber 110, the door cover 150 automatically closes the plug hole 111, providing a certain degree of sealing and dustproofing.

[0072] The present invention also provides a mobile charging method, comprising the following steps: moving a movable charging device to a device to be charged, and inserting a charging gun 120 into a charging port of the device to be charged to charge the device to be charged; when the power level of the movable charging device that is charging the device to be charged is lower than a preset threshold, it is marked as a low-power charging device; driving another movable charging device to move next to the low-power charging device, and inserting the pin 321 of the other movable charging device into the charging interface 221 of the low-power charging device to charge the low-power charging device, thereby providing continuous power to the device to be charged, without the need to repeatedly plug and unplug the charging port, and the power of the device to be charged can be continuously replenished without intermittent charging.

[0073] It is understandable that the mobile charging device can be equipped with sensors and central control chips to avoid obstacles while walking, and can also be equipped with positioning chips to realize position positioning monitoring, and then cooperate with the inertial navigation module to realize posture detection and posture correction functions. In order to facilitate the transmission of information, the mobile charging device can be equipped with Bluetooth modules and WiFi modules to exchange information with external devices, thereby facilitating remote control.

[0074] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A portable charging device, characterized in that: include: The mobile body is provided with a receiving cavity, wherein a rechargeable battery is installed in the receiving cavity, and the mobile body is provided with a charging head for charging external devices; a plug hole is opened on the side wall of the receiving cavity; A charging port structural assembly is mounted in the accommodating cavity and includes a mounting seat and a floating interface seat, wherein the mounting seat is fixedly connected to the mobile vehicle body, and the floating interface seat can reciprocate relative to the mounting seat in a first direction, and the floating interface seat is provided with a charging port arranged outward; A plug assembly, movably disposed in the plug hole, includes a charging plug; the charging plug has pins adapted to the charging interface, and the charging plug is capable of reciprocating relative to the vehicle body in a second direction, the second direction being perpendicular to the first direction; A driving mechanism is installed in the accommodating cavity and connected to the charging plug, and is used to drive the charging plug to extend and retract and move through the plug hole; The driving mechanism can drive the charging plug and the pin to extend from the plug hole and plug into the charging interface of another mobile charging device to charge the other mobile charging device; The plug assembly also includes an alignment frame; the alignment frame is sleeved on the outer periphery of the charging plug; the floating interface seat is provided with a positioning frame groove on the outer periphery of the charging interface, and the positioning frame groove opening is arranged outward for the alignment frame to be inserted; and when the plug assembly is inserted into the floating interface seat of another movable charging device, the alignment frame is positioned and matched with the positioning frame groove so that the pin is aligned with the charging interface of the other movable charging device; the peripheral wall of the positioning frame groove is provided with a locking opening, and the side wall of the alignment frame is hinged with a buckle, and the buckle is retracted in the retracted state inside the alignment frame and partially extends out of the locking state of the side wall of the alignment frame; the front end of the alignment frame is inserted into the other When a positioning frame groove of a movable charging device abuts against the front side wall of the positioning frame groove, the charging plug continues to move forward relative to the alignment frame to push the buckle to switch from a retracted state to a locked state, so that the buckle in the locked state cooperates with the locking port of another movable charging device, thereby limiting the relative displacement of the alignment frame and the floating interface seat of the other movable charging device in the front-to-back direction; and after the charging plug pushes the buckle to the locked state, continuing to move forward can enable the plug pin to be inserted into the charging port of the other movable charging device; the charging port structural assembly also includes a second elastic assembly; the charging port structural assembly is installed on the rear side of the mobile vehicle body; The front end of the floating interface seat is connected to a connecting column and a sphere in sequence, and the floating interface seat can rotate along the sphere relative to the mounting seat; the mounting seat is provided with a mounting cavity with an opening at the rear end, and a slide is provided on the front side wall of the mounting cavity, and the slide extends along a first direction, and the slide is provided with a slide groove for the sphere to move along the first direction, and an opening is provided at the rear end of the slide groove for the connecting column to extend out of the slide groove, and the width of the opening is greater than the width of the connecting column and smaller than the diameter of the sphere; a plurality of second elastic components are provided, which are circumferentially distributed on the peripheral wall of the mounting cavity, and are used to apply an elastic force to the floating interface seat when squeezed.

2. The portable charging device according to claim 1, wherein: The first direction is a vertical direction, the second direction is a left-right horizontal direction, and the plug hole is arranged on the front side of the moving vehicle body.

3. The portable charging device according to claim 2, characterized in that: The left and right sides of the charging plug extend backward with protruding plates extending out of the alignment frame, the rear ends of the two protruding plates are provided with a first outer flip plate, the left and right sides of the rear end of the alignment frame are provided with a second outer flip plate, and a first spring is provided between the first outer flip plate and the second outer flip plate.

4. The portable charging device according to claim 3, characterized in that: A first guide column extends rearward from the second outer flap, and the first outer flap is provided with a first guide hole for the first guide column to pass through. The rear end of the first guide column passes through the first guide hole and is connected to a first limiting nut. The outline of the first limiting nut is larger than the first guide hole. The first spring is a compression spring sleeved on the first guide column, and the two ends of the compression spring are respectively against the first outer flap and the second outer flap.

5. The portable charging device according to claim 1, wherein: The side wall of the alignment frame is provided with a through hole for installing a buckle. The buckle is hinged to the through hole through a hinge shaft, and a torsion spring is installed on the hinge shaft to keep the buckle in a contracted state when not subjected to external force.

6. The portable charging device according to claim 4, characterized in that: The left and right edges of the inner side of the plug hole are provided with rearward-protruding bumps, which are used to abut against the second outer flap to limit the stroke of the alignment frame extending out of the plug hole; the left and right bumps are provided with first elastic components, which are used to apply elastic force to the left and right sides of the alignment frame.

7. A mobile charging method, characterized in that: The steps include: Move the mobile charging device according to any one of claims 1 to 6 to the device to be charged, and insert the charging head into the charging port of the device to be charged to charge the device to be charged; When the battery level of a portable charging device is lower than a preset threshold, it is marked as a low-battery charging device; Drive another movable charging device to move next to the low-power charging device, and insert the pin into the charging port of the low-power charging device to charge the low-power charging device.

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