CN111731126A

CN111731126A - Draw-bar box type charger baby for miniature electric automobile

Info

Publication number: CN111731126A
Application number: CN202010602619.5A
Authority: CN
Inventors: 不公告发明人
Original assignee: Yancheng Huanchuang Technology Co ltd
Current assignee: Yancheng Huanchuang Technology Co ltd
Priority date: 2020-06-29
Filing date: 2020-06-29
Publication date: 2020-10-02

Abstract

The invention discloses a draw-bar box type charging bank for a miniature electric vehicle, which comprises a box body, an electric vehicle charging wire, a clamping strip, a control panel, an electric vehicle power supply port, a lithium battery pack charging port, a mobile phone APP connecting port, a plurality of prompting lamps and a moving wheel, wherein the clamping strip is clamped in the middle of one side of the box body, the electric vehicle charging wire is installed on one side of the clamping strip, the control panel is arranged on the other side of the clamping strip, the electric vehicle power supply port, the lithium battery pack charging port and the mobile phone charging port are sequentially arranged on one side of the control panel from top to bottom, the mobile phone APP connecting port and the plurality of prompting lamps are sequentially arranged on the other side of the control panel from top to bottom, and the moving wheel is arranged at the bottom corner of the box body. Has the advantages that: the box is conveniently carried to any place, is convenient for charge the treasured and use.

Description

Draw-bar box type charger baby for miniature electric automobile

Technical Field

The invention relates to the technical field of automobile auxiliary equipment, in particular to a draw-bar box type charger baby for a miniature electric automobile.

Background

With the rapid development of the automobile industry in the field of new energy, electric products are released by a plurality of brands; at present, electric automobiles are more and more widely used, the electric automobiles slowly become a travel tool for some citizens, but due to the limitation of batteries, the driving range is generally not too high, and the situation that the electric automobiles are out of power when riding on half way can occur; the battery pack of the electric automobile is generally heavy and cannot be charged like an electric automobile in offices or other places, so that the battery pack has a narrow use range and is difficult to move.

In conclusion, how to conveniently move the electric automobile charger baby is a technical problem which needs to be solved urgently at present.

Disclosure of Invention

The invention aims to overcome the defects and provides a draw-bar box type charger baby for a miniature electric vehicle to solve the problem of movement of the charger baby of the mobile electric vehicle.

The technical scheme of the invention is realized as follows:

a trolley case type charging treasure for a miniature electric vehicle comprises a case body, an electric vehicle charging wire, a clamping strip, a control panel, an electric vehicle power supply port, a lithium battery pack charging port, a mobile phone APP connecting port, a plurality of prompting lamps and a movable wheel, wherein the clamping strip is clamped in the middle of one side of the case body, the electric vehicle charging wire is installed on one side of the clamping strip, the control panel is arranged on the other side of the clamping strip, the electric vehicle power supply port, the lithium battery pack charging port and the mobile phone charging port are sequentially arranged on one side of the control panel from top to bottom, the mobile phone APP connecting port and the plurality of prompting lamps are sequentially arranged on the other side of the control panel from top to bottom, the movable wheel is arranged at the bottom edge of the case body, the case body comprises an outer case body and an inner case body covering the inner side of the outer case body, a supporting plate is arranged at the top of one side of the outer box body, which is far away from the control panel, a transverse plate for holding hands is arranged at the top of the supporting plate, a first cavity is arranged in the outer box body and corresponds to the side edge of the supporting plate, a first partition plate is transversely arranged at the inner middle part of the first cavity, the first partition plate divides the inner part of the first cavity into an upper cavity and a lower cavity, a clamping block is arranged at the upper part of one side of the lower cavity, a first connecting shaft is inserted into the clamping block, a movable plate is sleeved on the first connecting shaft, a U-shaped clamping plate is arranged at one end of the movable plate, which is far away from the clamping block, a second connecting shaft is inserted at one end of the U-shaped clamping plate, which is far away from the movable plate, a fixed block is sleeved on the second connecting shaft, the top of the first support column penetrates through the first partition board and extends into the upper cavity and is provided with a second support column, a first fixed column is fixed at the lower part of the second support column and is positioned at one end of the top of the first partition board, a third fixed column is sleeved on the upper part of the second support column, the third fixed column is fixed at the upper part of one side in the upper cavity, a second fixed column is fixed at the top of the first partition board and is positioned at one side far away from the first fixed column, a first sleeve is arranged at the top of the second fixed column, a third support column is inserted into the first sleeve and is arranged in the first sleeve, the bottom of the third support column penetrates through the first sleeve, the second fixed column and the first partition board and extends into the lower cavity, a group of limiting rods is arranged at the lower part of the third support column, the movable plate is inserted between a group of limiting rods and is matched with the limiting rods, the top of the third, the top of the fixing plate II is fixed to the bottom of the supporting plate, a fixing plate II is sleeved on the upper portion of the surface of the supporting column III, the top of the fixing plate II is fixed to one side of the top of the outer box body, and the sleeve II is sleeved on the upper portion of the supporting column III.

Preferably, a first limiting plate is arranged between the top of the air rod and the bottom of the first supporting column, and the width of the cross section of the first limiting plate is larger than that of the cross section of the air cylinder.

Preferably, the control button is installed to control panel side bottom, control panel's below just is located box side bottom is equipped with the drawer cabinet.

Preferably, one side just corresponds in the box the one end of drawer cabinet be equipped with the cavity two of drawer cabinet looks adaptation, the both sides inner wall all is equipped with fixed plate one in the cavity two, and the corresponding side top and the bottom of both ends fixed plate one all are equipped with flange two, flange two just keep away from one side of fixed plate one is equipped with flange one, on the flange one of both ends all the joint have with flange one matched with U type slide, vertically be equipped with fixed plate two between the U type slide of both ends, fixed plate two just keeps away from one side of U type slide is fixed the both sides middle part of drawer cabinet.

Preferably, the first protruding plate and the second protruding plate are provided with limiting blocks matched with the U-shaped sliding plate and close to the outer side end of the cavity.

Preferably, the width of the cross section of the limiting block is smaller than the distance formed between the side edge of the second fixing plate, which corresponds to the first fixing plate, and the first fixing plate.

Preferably, the outside middle part of drawer cabinet is equipped with the handle, place the charging wire that supplies the treasured that charges to charge in the drawer cabinet, the box side just is located the below one end of electric automobile charging wire be equipped with the USB interface that the charging wire is connected.

The invention has the beneficial effects that:

1. the charger can not only provide a standby power supply for the vehicle to continue running, but also charge the mobile phone; the pull rod box type charger baby can also push and pull the box body to an office and other places to charge by holding the cross rod; can charge precious state through cell-phone APP real time monitoring, when detecting to charge precious electric quantity not enough, remind the user to in time charge for the treasured that charges, the treasured that charges can satisfy quick charge's requirement.

2. Through the backup pad of over-and-under type is installed to precious side that will charge, the diaphragm is held to the accessible hand and is carried out effectual push-and-pull to the box in the lift backup pad, conveniently carries any place with the box, is convenient for charge the precious and use of charging, is convenient for in time supply the electric automobile.

3. In addition, the bottom plate in the side one end of box is equipped with the drawer cabinet, can place the precious charging wire that charges in the drawer cabinet, when the mobile phone APP control charges when the electric quantity that the precious contains is not enough, the accessible warning light reminds, and the timely charging wire of taking out the supporting formula of convenience of customers charges to the precious that charges, and adopts USB interface formula to connect the charging wire, can conveniently carry out effectual accomodating and carrying with the charging wire.

4. The electric automobile charging wire and the electric automobile power supply port arranged on the side edge of the box body can bring convenience to the electric automobile with or without a wire, so that various requirements of a user are facilitated.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

FIG. 1 is a schematic diagram of an overall architecture according to an embodiment of the present invention;

FIG. 2 is a side view of an embodiment in accordance with the invention;

FIG. 3 is a schematic view of the lifting structure of the push-pull rod inside the outer box according to the embodiment of the present invention;

FIG. 4 is a partial enlarged view of A from FIG. 1;

FIG. 5 is a schematic view of a sliding structure of the inner side of the cavity according to an embodiment of the invention;

FIG. 6 is a schematic view of a movable structure of a bottom support leg in the box body according to an embodiment of the invention;

fig. 7 is a schematic view of a bottom structure of a case according to an embodiment of the present invention.

In the figure:

1. a box body; 2. an electric vehicle charging wire; 3. clamping the strip; 4. a control panel; 5. a power supply port of the electric automobile; 6. a charging port of the lithium battery pack; 7. a mobile phone charging port; 8. a mobile phone APP connector; 9. a warning light; 10. a moving wheel; 11. an outer case; 12. an inner box body; 13. a support plate; 14. a transverse plate; 15. a first clapboard; 16. a clamping block; 17. a first connecting shaft; 18. a movable plate; 19. a U-shaped clamping plate; 20. a second connecting shaft; 21. a fixed block; 22. a cylinder; 23. a gas lever; 24. a first supporting column; 25. a second supporting column; 26. fixing a first column; 27. fixing a column III; 28. fixing a second column; 29. a first sleeve; 30. a third support column; 31. heat dissipation holes; 32. a limiting rod; 33. fixing a plate IV; 34. a third fixing plate; 35. a second sleeve; 36. a first limiting plate; 37. a control key; 38. a drawer cabinet; 39. a second cavity; 40. a first fixing plate; 41. a convex plate II; 42. a first convex plate; 43. a U-shaped slide plate; 44. a second fixing plate; 45. a limiting block; 46. a handle; 47. a USB interface; 48. a support leg; 49. a second clapboard; 50. a trapezoidal plate; 51. a telescopic rod; 52. a telescopic motor; 53. a pulley; 54. a second ventilating duct; 55. and a first ventilating duct.

Detailed Description

In the description of the present invention, it is to be understood that the terms "center", "lateral", "upper", "lower", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified. Furthermore, the term "comprises" and any variations thereof is intended to cover non-exclusive inclusions.

The invention is further described with reference to the following figures and specific examples.

In the first embodiment, as shown in fig. 1-3, the trolley-type miniature electric vehicle charger according to the embodiment of the present invention includes a box body 1, an electric vehicle charging cable 2, a card strip 3, a control panel 4, an electric vehicle power supply port 5, a lithium battery pack charging port 6, a mobile phone charging port 7, a mobile phone APP connector 8, a plurality of indicator lamps 9 and a movable wheel 10, the card strip 3 is connected to the middle of one side of the box body 1 in a clamping manner, the electric vehicle charging cable 2 is installed on one side of the card strip 3, the control panel 4 is installed on the other side of the card strip 3, the electric vehicle power supply port 5, the lithium battery pack charging port 6 and the mobile phone charging port 7 are sequentially installed on one side of the control panel 4 from top to bottom, the mobile phone APP connector 8 and the plurality of indicator lamps 9 are sequentially installed on the other side of the control panel 4 from top to bottom, the bottom corners of the box body 1 are provided with the moving wheels 10, wherein the box body 1 comprises an outer box body 11 and an inner box body 12 covering the inner side of the outer box body 11, a supporting plate 13 is arranged at the top of one side of the outer box body 11, which is far away from the control panel 4, a transverse plate 14 for holding a hand is arranged at the top of the supporting plate 13, a first cavity is arranged in the outer box body 11 and corresponds to the side edge of the supporting plate 13, a first partition 15 is transversely arranged in the middle of the first cavity, the first partition 15 divides the inside of the first cavity into an upper cavity and a lower cavity, a clamping block 16 is arranged at the upper part of one side of the lower cavity, a first connecting shaft 17 is inserted in the clamping block 16, a moving plate 18 is sleeved on the first connecting shaft 17, one end of the moving plate 18, which is far away from the clamping block 16, is provided with a U-shaped clamping plate 19, the connecting shaft II 20 is sleeved with a fixing block 21, the top of the fixing block 21 is provided with an air cylinder 22, an air rod 23 matched with the air cylinder 22 is arranged in the air cylinder 22, the top of the air rod 23 is provided with a first supporting column 24, the top of the first supporting column 24 penetrates through the first partition plate 15, extends into the upper cavity and is provided with a second supporting column 25, one end of the lower part of the second supporting column 25, which is positioned at the top of the first partition plate 15, is fixedly provided with a first fixing column 26, the upper part of the second supporting column 25 is sleeved with a third fixing column 27, the third fixing column 27 is fixedly arranged at the upper part of one side in the upper cavity, the top of the first partition plate 15, which is far away from the first fixing column 26, is fixedly provided with a second fixing column 28, the top of the second fixing column 28 is provided with a first sleeve 29, a third supporting column, The second fixed column 28 and the first partition plate 15 extend into the lower cavity, a set of limiting rods 32 is arranged at the lower part of the third support column 30, the movable plate 18 is inserted between the set of limiting rods 32 and is matched with the limiting rods 32, the top of the third support column 30 penetrates through one end of the top of the outer box body 11 and extends to the upper part of the outer box body 11, a fourth fixed plate 33 is arranged at the top of the fourth fixed plate 33, the bottom of the support plate 13 is fixed at the top of the upper cavity, one end of the upper cavity, which is far away from the third fixed column 27, is sleeved with the third fixed plate 34 on the upper part of the surface of the third support column 30, the top of the third fixed plate 34 is fixed at one side of the top of the inner box body 11, the bottom of the third fixed plate 34 is provided with the second sleeve 35, and the.

Embodiment two, as shown in fig. 4, the top of gas pole 23 with be equipped with one limiting plate 36 between the bottom of support column 24, just the cross section width of one limiting plate 36 is greater than the cross section width of cylinder 22, control button 37 is installed to control panel 4 side bottom, control panel 4's below just is located box 1 side bottom is equipped with drawer cabinet 38, conveniently accomodates instrument and electric wire, increases and accomodates the function.

In a third embodiment, as shown in fig. 4 to 5, a second cavity 39 adapted to the drawer cabinet 38 is disposed at one end of the box body 1 corresponding to the drawer cabinet 38, first fixing plates 40 are disposed on inner walls of two sides of the second cavity 39, second protruding plates 41 are disposed at tops and bottoms of corresponding sides of the first fixing plates 40 at two ends, the second protruding plates 41 are disposed at one side of the second protruding plates 41 away from the first fixing plates 40, U-shaped sliding plates 43 matched with the second protruding plates 41 are clamped on the second protruding plates 41 at two ends, a second fixing plate 44 is longitudinally disposed between the U-shaped sliding plates 43 at two ends, one side of the second fixing plates 44 away from the U-shaped sliding plates 43 is fixed in middle portions of two sides of the drawer cabinet 38, limiting blocks 45 matched with the U-shaped sliding plates 43 are disposed at outer side ends of the first protruding plates 42 and the second protruding plates 41 close to the second cavity 39, and cross-sectional widths of the limiting blocks 45 are smaller than those of the second fixing plates 44 and correspond to the side and the first fixing The distance that forms between fixed plate 40 can be accomodate in putting into drawer cabinet 38 through the drawer cabinet 38 that sets up the precious charging wire that charges, also can charge the precious when being convenient for remove any place, can not in time charge when preventing to charge when precious electric quantity not enough.

Fourth, as shown in fig. 1 and 4, the outside middle part of drawer cabinet 38 is equipped with handle 46, place the charging wire that supplies the treasured that charges to charge in the drawer cabinet 38, 1 side of box just is located electric automobile charges the below one end of electric wire 2 be equipped with the USB interface 47 that the charging wire is connected is convenient for carry out effectual accomodating to the electric wire, and is favorable to any place to charge the treasured that charges, prevents to charge the precious not enough power supply nature that influences electric automobile.

In a fifth embodiment, as shown in fig. 6, a set of support legs 48 for supporting the box 1 may be disposed at two ends of the central position of the bottom of the box 1, and the two end support legs 48 both extend into the box 1 through the bottom of the box 1, a partition plate 49 is transversely disposed at the lower portion of the box 1, symmetrical trapezoidal plates 50 slidably fitted to the bottoms of the partition plate 49 are disposed at two ends of the bottom of the partition plate 49, telescopic rods 51 are disposed at two ends of the trapezoidal plates 50 and at one end close to the inner wall of the box 1, telescopic motors 52 are mounted at one ends of the telescopic rods 51 far from the trapezoidal plates 50, the telescopic motors 52 are fixed to the inner walls at two sides of the box 1, wherein the tops of the support legs 48 are both fitted to the trapezoidal plates 50 through pulleys 53, and the middle portions of the pulleys 53 are movably connected to the tops of the support legs 48 through movable bolts, when the telescopic motor 52 is controlled by the control button under the connection of the electric wire, the telescopic rod 51 is driven to be telescopic, so that the trapezoidal plate 50 is pushed to move left and right, the pulley 53 is driven to prop against the supporting leg 48 to be supported on the ground, and the height of the supporting leg 48 after being supported out is larger than the grounding distance of the moving wheel 10, so that the supporting performance of the box body 1 can be achieved.

Sixth embodiment, as shown in fig. 7, a partition plate two 49 is transversely provided at a lower portion inside the box 1, a ventilation duct two 54 is inserted into a middle portion of the partition plate two 49, a ventilation duct one 55 is provided at a lower portion of the ventilation duct two 54 in a penetrating manner, the ventilation duct one 55 and the ventilation duct two 54 are both made of stainless steel pipes, a size of the ventilation duct one 55 is larger than a size of the ventilation duct two 54, the ventilation duct one 55 and the ventilation duct two 54 are both coated with an anti-rust layer, a plurality of heat dissipation holes 31 are provided at a central position of a bottom of the box 1 and at two ends of the bottom of the box 1, and the heat dissipation holes 31 provided at the bottom of the box 1 effectively dissipate heat inside the box 1, and natural wind generated when the box 1 is moved can enter the box 1 through the heat dissipation holes 31 and then enter the ventilation duct two 54 through the ventilation duct, through 1 inside lithium cell group, battery management system, the step-down module and the bluetooth module of installing of box again dispel the heat, because the pipe diameter of air pipe 55 is greater than air pipe two 54's pipe diameter for the wind speed that passes through can play the effect that increases the wind speed through the difference of pipe diameter.

The specific working process is as follows: when the box body 1 needs to be moved to a required place, the air cylinder 22 and the control button are controlled through an electric wire, so that the driving air cylinder 22 and the air rod 23 are matched with each other, when the air rod 23 is lifted in the air cylinder 22, the air rod 23 supports the vertical movement of the fixed block 21, because the fixed column three 27 and the fixed column one 26 are fixed, the air rod 23 is supported to move up and down when lifted, the air cylinder 22 drives the fixed block 21 to move when lifted up and down, so that the movable plate 18 is pulled to move up and down, and because one end of the movable plate 18 penetrates through the supporting column three 30 and is clamped between the limiting rods 32, when one end of the movable plate 18 moves up and down, the supporting column three 30 is driven to lift up and down, the supporting column three 30 penetrates through the fixed column two 28, the sleeve one 29, the sleeve two 35, the fixed plate three 34 and one end of the top of the outer box body 11, so that the supporting plate, therefore, the supporting plate 13 is convenient to stretch and retract, and the user can conveniently push and pull effectively, the clamping block 16 is fixed in the lower cavity, and one end of the clamping block is fixed, so that when the movable plate 18 moves, the operation is carried out through the action of the connecting shaft; in addition, when the treasured that charges pushes and pulls to office or other places, just in time meet the precious not enough condition of electric quantity that charges, pull out drawer cabinet 38 through hand-pulling handle 46 for U type slide 43 slides on two 41 protruding boards, then insert USB interface 47 and outside socket after taking out the inside charging wire of placing in advance of drawer cabinet 38 on, thereby charge, accomodate the charging wire in drawer cabinet 38 when the electric quantity is sufficient and accomodate.

The present invention can be easily implemented by those skilled in the art from the above detailed description. It should be understood, however, that the intention is not to limit the invention to the particular embodiments described. On the basis of the disclosed embodiments, a person skilled in the art can combine different technical features at will, thereby implementing different technical solutions.

Claims

1. The utility model provides a box miniature electric automobile of pull rod is with treasured that charges, a serial communication port, including box (1), electric automobile charging wire (2), card strip (3), control panel (4), electric automobile power supply mouth (5), lithium cell group charge mouth (6), cell-phone charge mouth (7), cell-phone APP connector (8) and a plurality of warning light (9) and removal wheel (10), one side middle part joint of box (1) has card strip (3), install one side of card strip (3) electric automobile charging wire (2), the opposite side of card strip (3) is equipped with control panel (4), control panel (4) are gone up one side from the top down and are equipped with in proper order electric automobile power supply mouth (5), lithium cell group charge mouth (6) and cell-phone charge mouth (7), the opposite side from the top down of control panel (4) is equipped with in proper order cell-phone APP connector (8) and a plurality of warning light connector (8) (9) The bottom corners of the box body (1) are provided with the moving wheels (10), wherein the box body (1) comprises an outer box body (11) and an inner box body (12) covering the inner side of the outer box body (11), a supporting plate (13) is arranged at the top of one side, away from the control panel (4), of the outer box body (11), a transverse plate (14) for holding a hand is arranged at the top of the supporting plate (13), a first cavity is arranged in the outer box body (11) and corresponds to the side edge of the supporting plate (13), a first partition plate (15) is transversely arranged in the middle of the first cavity, the first partition plate (15) divides the inside of the first cavity into an upper cavity and a lower cavity, a clamping block (16) is arranged on the upper portion of one side of the lower cavity, a first connecting shaft (17) is inserted in the clamping block (16), and a moving plate (18) is sleeved on the, a U-shaped clamping plate (19) is arranged at one end, far away from the clamping block (16), of the movable plate (18), a connecting shaft II (20) is inserted into one end, far away from the movable plate (18), of the U-shaped clamping plate (19), a fixing block (21) is sleeved on the connecting shaft II (20), an air cylinder (22) is arranged at the top of the fixing block (21), an air rod (23) matched with the air cylinder (22) is arranged in the air cylinder (22), a supporting column I (24) is arranged at the top of the air rod (23), the top of the supporting column I (24) penetrates through the partition plate I (15) and extends into the upper cavity, a supporting column II (25) is arranged in the upper cavity, a fixing column I (26) is fixed at one end, located at the top of the partition plate I (15), of the lower portion of the supporting column II (25), and a fixing column, the fixed column III (27) is fixed at the upper part of one side in the upper cavity, the fixed column II (28) is fixed at the top of the partition plate I (15) and one side far away from the fixed column I (26), a sleeve I (29) is arranged at the top of the fixed column II (28), a support column III (30) is inserted in the sleeve I (29), the bottom of the support column III (30) penetrates through the sleeve I (29), the fixed column II (28) and the partition plate I (15) and extends into the lower cavity, a group of limiting rods (32) are arranged at the lower part of the support column III (30), the movable plate (18) penetrates between the group of limiting rods (32) and is matched with the limiting rods (32), the top of the support column III (30) penetrates through one end of the top of the outer box body (11) and extends to the upper part of the outer box body (11), and a fixed plate IV (33) is arranged, the top of the fourth fixing plate (33) is fixed to the bottom of the supporting plate (13), the third fixing plate (34) is sleeved on the upper portion of the surface of the third supporting column (30) and far away from one end of the third fixing column (27) at the top of the upper cavity, the third fixing plate (34) is fixed to one side of the inner top of the outer box body (11), the second sleeve (35) is arranged at the bottom of the third fixing plate (34), and the second sleeve (35) is sleeved on the upper portion of the third supporting column (30).

2. The trolley-box-type charger for miniature electric vehicles according to claim 1, wherein a first limiting plate (36) is disposed between the top of the gas rod (23) and the bottom of the first supporting column (24), and the cross-sectional width of the first limiting plate (36) is greater than the cross-sectional width of the cylinder (22).

3. The trolley-box type charger for miniature electric vehicles as claimed in claim 1, wherein the control button (37) is installed at the bottom of the side of the control panel (4), and a drawer cabinet (38) is installed below the control panel (4) and at the bottom of the side of the box body (1).

4. The trolley case type charger for miniature electric vehicles as claimed in claim 3, a second cavity (39) matched with the drawer cabinet (38) is arranged at one end of the inner side of the box body (1) and corresponding to the drawer cabinet (38), the inner walls of the two sides in the second cavity (39) are respectively provided with a first fixing plate (40), the tops and the bottoms of the corresponding side edges of the first fixing plates (40) at the two ends are respectively provided with a second convex plate (41), a first convex plate (42) is arranged on one side of the second convex plate (41) far away from the first fixed plate (40), U-shaped sliding plates (43) matched with the first convex plates (42) are clamped on the first convex plates (42) at two ends, a second fixed plate (44) is longitudinally arranged between the U-shaped sliding plates (43) at two ends, and one side of the second fixing plate (44) far away from the U-shaped sliding plate (43) is fixed in the middle of two sides of the drawer cabinet (38).

5. The trolley-box-type charger for miniature electric vehicles as claimed in claim 4, wherein the first protruding plate (42) and the second protruding plate (41) are provided with a limiting block (45) matching with the U-shaped sliding plate (43) near the outer end of the second cavity (39).

6. The portable charger according to claim 5, wherein the cross-sectional width of the stopper (45) is smaller than the width of the second fixing plate (44) and corresponds to the distance between the side of the first fixing plate (40) and the first fixing plate (40).

7. The trolley-box type miniature electric vehicle charger according to claim 3, wherein a handle (46) is disposed in the middle of the outer side of the drawer cabinet (38), a charging wire for charging the charger is disposed in the drawer cabinet (38), and a USB interface (47) connected to the charging wire is disposed at one end of the side of the box body (1) and below the electric vehicle charging wire (2).