A portable direct current charging device

Abstract

The utility model discloses a portable direct current charging equipment concretely relates to charging pile technical field, including shell upper cover and the cabinet that sets up on shell upper cover, the inner wall of cabinet is provided with mounting panel, is provided with charging system between cabinet and mounting panel, the outside of cabinet is provided with charging gun, and charging gun and charging system electric connection, the corner department of cabinet bottom is provided with universal wheel, and the side of cabinet is provided with lifting assembly, and the anti -skidding support of lifting assembly is provided with, the top of shell upper cover is provided with handle, and the top of shell upper cover still is provided with 4G antenna, the front side and the back of cabinet all are provided with the sealing plate, and the left side and the back of cabinet all are provided with the ventilating board, the side of cabinet is provided with toughened glass from top to bottom in proper order with liquid crystal display, button and LED lamp, the side of cabinet is provided with toughened glass, the utility model solves portable charging and carries extremely inconvenient and the technical problem of low charging power.

Description

Technical Field

[0001] This utility model relates to the field of charging pile technology, and more specifically, to a portable DC charging device. Background Technology

[0002] As the number of electric vehicles continues to rise, the demand for convenient charging is becoming increasingly urgent. Traditional charging stations are limited by fixed installation locations, making it difficult to meet users' charging needs in outdoor, remote, and other scenarios. Therefore, portable charging devices are better suited to meet the need for flexible charging.

[0003] Existing portable charging devices charge vehicle battery packs by directly connecting to household power. These devices are either bulky and heavy, making them extremely inconvenient to carry, or they have low charging power, resulting in excessively long charging times.

[0004] Therefore, in view of this, we will study and improve the existing structure and its shortcomings to provide a portable DC charging device, in order to achieve a more practical purpose. Utility Model Content

[0005] To overcome the shortcomings mentioned above, this utility model aims to provide a technical solution that can solve the problems of inconvenience in carrying portable chargers and low charging power.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a portable DC charging device, comprising an outer shell cover and a cabinet disposed on the outer shell cover, an installation plate disposed on the inner wall of the cabinet, a charging system disposed between the cabinet and the installation plate, and a charging gun disposed on the outer side of the cabinet, the charging gun being electrically connected to the charging system; The cabinet is equipped with casters at the corners of its bottom, and a lifting assembly is provided on the side of the cabinet, with an anti-slip support on the lifting assembly.

[0007] In a preferred embodiment, a handle is provided on the top of the outer casing cover, and a 4G antenna is also provided on the top of the outer casing cover.

[0008] In a preferred embodiment, the cabinet is provided with sealing plates on the front and rear sides, and ventilation plates are provided on the left and rear sides.

[0009] In a preferred embodiment, the side of the cabinet is provided with an LCD screen, buttons and LED lights from top to bottom, and the side of the cabinet is provided with tempered glass, which is located on one side of the LCD screen.

[0010] In a preferred embodiment, the charging system includes a switching power supply, a miniature circuit breaker, an auxiliary power switching board, an AC input terminal, an AC input main switch, a shunt, a DC meter, and a high-frequency AC / DC charging module, all disposed within the cabinet. The ventilation plate is located at the end of the high-frequency AC / DC charging module, and both the AC input terminal and the AC input main switch pass through the cabinet.

[0011] In a preferred embodiment, the charging system further includes an analog information acquisition unit, a main controller, an AC contactor, a DC contactor, and a DC fuse, which are respectively disposed on the mounting plate.

[0012] In a preferred embodiment, the AC input terminal, miniature circuit breaker, switching power supply, and auxiliary power switching board are sequentially and electrically connected. The auxiliary power switching board is bidirectionally and electrically connected to the charging gun. The output terminal of the switching power supply is electrically connected to the input terminal of the main controller. The AC input main switch, AC contactor, high-frequency AC / DC charging module, and DC contactor are sequentially and electrically connected. The DC fuse and shunt are connected in series between the DC contactor and the charging gun. The output terminal of the shunt is electrically connected to the input terminals of the DC meter and the analog information acquisition device, respectively. The analog information acquisition device is bidirectionally and electrically connected to the charging gun. The main controller is bidirectionally and electrically connected to the DC meter, the DC contactor, and the high-frequency AC / DC charging module, respectively. The output terminal of the main controller is electrically connected to the input terminal of the AC contactor.

[0013] In a preferred embodiment, the lifting assembly includes a positioning plate, a positioning groove, a positioning column, and a lifting plate. The positioning plate is disposed on the side of the cabinet, the positioning groove is formed on the positioning plate, the positioning column is movably connected in the positioning groove, and the lifting plate is disposed on the positioning column.

[0014] In a preferred embodiment, the positioning groove includes a guide groove, a first positioning groove, and a second positioning groove. The guide groove, the first positioning groove, and the second positioning groove are all formed through the positioning plate, and the first positioning groove and the second positioning groove are respectively connected to the guide groove.

[0015] In a preferred embodiment, a fixed frame is provided at one end of the lifting plate, and the anti-slip support body includes multiple support blocks one and multiple support blocks two, all of which are located at the bottom of the fixed frame.

[0016] The technical effects and advantages of this utility model are as follows: This portable DC charging device features a high-frequency AC / DC charging module with lower on-resistance and switching losses. The ventilation plate increases the heat dissipation area of ​​the high-frequency AC / DC charging module. Combined with the overload and circuit-breaking protection provided by the charging system, it effectively improves charging efficiency while ensuring charging safety.

[0017] This portable DC charging device features casters, a handle, and an anti-slip support. The combination of the handle and casters makes the entire charging device easy to move and transport. Under the flexible control of the lifting component, the anti-slip support is able to stabilize the charging device by pressing against the ground, thus improving the flexibility of the entire charging device. Attached Figure Description

[0018] To more clearly illustrate the embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the overall planar structure of this utility model; Figure 2 This is an exploded structural diagram of the entire utility model; Figure 3 This is a system architecture diagram of the charging system of this utility model; Figure 4 This is a structural schematic diagram of the lifting component and anti-slip support body of this utility model; Figure 5 This is a schematic diagram of the positioning plate of this utility model.

[0020] The attached diagram is labeled as follows: 1. Outer shell cover; 101. Handle; 102. 4G antenna; 2. Cabinet; 201. Sealing plate; 202. Ventilation plate; 3. Tempered glass; 4. LCD screen; 5. Button; 6. LED light; 7. Charging gun; 8. Switching power supply; 81. Miniature circuit breaker; 82. Auxiliary power switching board; 9. AC input terminal; 10. AC input main switch; 11. Caster wheel; 12. Shunt; 121. DC meter; 13. Mounting plate; 14. Analog information acquisition device; 15. Main controller; 16. DC contactor; 161. AC contactor; 17. DC fuse; 18. High-frequency AC / DC charging module; 19. Positioning plate; 20. Guide groove; 21. Positioning inclined groove one; 22. Positioning inclined groove two; 23. Positioning column; 24. Lifting plate; 25. Fixing frame; 26. Support block one; 261. Support block two. Detailed Implementation

[0021] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0022] See also Figures 1-5 This utility model provides a portable DC charging device, including an outer shell cover 1 and a cabinet 2 disposed on the outer shell cover 1. A handle 101 is provided on the top of the outer shell cover 1, and a 4G antenna 102 is also provided on the top of the outer shell cover 1.

[0023] The outer cover 1 and the cabinet 2 can be combined to form a complete equipment housing. The handle 101 makes it easy to move the equipment housing. The 4G antenna 102 can establish a communication connection with the operation platform.

[0024] In this embodiment: sealing plates 201 are provided on the front and rear sides of the cabinet 2, and ventilation plates 202 are provided on the left and rear sides of the cabinet 2.

[0025] In this application, the cabinet 2 is arranged in a "U" shape. The position of the cabinet 2 near the sealing plate 201 is the maintenance area. The sealing plate 201 can be used to block the maintenance area of ​​the cabinet 2. The ventilation plate 202 has ventilation openings, which can promote ventilation and heat dissipation inside the cabinet 2. In this application, a cooling fan can be installed inside the cabinet 2 and on one side of the ventilation plate 202. The cooling fan can promote the circulation of air inside the cabinet 2 and ensure effective heat dissipation of the charging system.

[0026] In this embodiment: a mounting plate 13 is provided on the inner wall of the cabinet 2, and a charging system is provided between the cabinet 2 and the mounting plate 13. A charging gun 7 is provided on the outer side of the cabinet 2. The charging gun 7 is electrically connected to the charging system 27. The charging system includes a switching power supply 8, a miniature circuit breaker 81, an auxiliary power switching board 82, an AC input terminal 9, an AC input main switch 10, a shunt 12, a DC meter 121, and a high-frequency AC / DC charging module 18, which are respectively provided in the cabinet 2. A ventilation plate 202 is located at the end of the high-frequency AC / DC charging module 18. The AC input terminal 9 and the AC input main switch 10 both pass through the cabinet 2. The charging system also includes an analog information acquisition device 14, a main controller 15, an AC contactor 161, a DC contactor 16, and a DC fuse 17, which are respectively provided on the mounting plate 13.

[0027] In this embodiment: AC input terminal 9, miniature circuit breaker 81, switching power supply 8, and auxiliary power switching board 82 are electrically connected in sequence. Auxiliary power switching board 82 is bidirectionally electrically connected to charging gun 7. The output terminal of switching power supply 8 is electrically connected to the input terminal of main controller 15. AC input main switch 10, AC contactor 161, high-frequency AC / DC charging module 18, and DC contactor 16 are electrically connected in sequence. DC fuse 17 and shunt 12 are connected in series between DC contactor 16 and charging gun 7. The output terminal of shunt 12 is electrically connected to the input terminals of DC meter 121 and analog information acquisition device 14, respectively. Analog information acquisition device 14 is bidirectionally electrically connected to charging gun 7. Main controller 15 is bidirectionally electrically connected to DC meter 121, DC contactor 16, and high-frequency AC / DC charging module 18, respectively. The output terminal of main controller 15 is electrically connected to the input terminal of AC contactor 161.

[0028] AC input terminal 9 is used to receive AC power from the external power grid. AC input main switch 10 can be used to control the power supply of the entire charging equipment. Switching power supply 8 is used to convert AC power into stable DC power to provide operating power for various electrical components. When the output current of switching power supply 8 exceeds the rated value, miniature circuit breaker 81 can automatically cut off the circuit. AC contactor 161 generates a magnetic field through the periodic change of AC power to control the opening and closing of contacts. High-frequency AC / DC charging module 18 uses high-frequency power devices, such as high-frequency MOSFETs and IGBTs. These devices have lower conductor resistance and switching losses at high frequencies, improving charging conversion efficiency. Thus, when charging the car battery pack through charging gun 7, AC power can be efficiently converted into DC power suitable for electric vehicle charging, greatly improving the charging speed. DC contactor 16 controls the opening and closing of contacts through the constant magnetic field of DC power. DC fuse 17 quickly cuts off the circuit when an overload or short circuit occurs, protecting equipment and personnel safety. Shunt 12 uses parallel shunt technology to convert large currents into small currents measurable by DC meter 121, thus expanding the range of currents. The DC meter 121 has an expanded range, which improves measurement accuracy and system safety. The analog information acquisition unit 14 is used to collect analog information such as voltage and current during the charging process and transmit this information to the main controller 15. The auxiliary power switching board 82 can automatically switch the power supply to the auxiliary power supply when the main power supply voltage fails, ensuring that the system is powered on without interruption. The main controller 15 adopts a high-performance MCU processor, which accurately monitors and controls the entire charging process based on the collected information, including real-time adjustment of charging voltage, current, and power, as well as judgment of charging status and fault diagnosis. While ensuring charging safety, it can improve charging efficiency.

[0029] Furthermore, a 4G module can be integrated into the main controller 15. This 4G module connects to the internet via a 4G antenna 102, establishing a communication connection with the operation platform. Users can remotely monitor the charging pile's operating status through a mobile app or other terminal devices, such as viewing charging parameters and remaining charging time in real time. They can also remotely set charging parameters, enabling intelligent charging management. Simultaneously, the charging pile can promptly upload fault information to the operation platform, facilitating rapid response and handling by maintenance personnel.

[0030] In this embodiment: The side of the cabinet 2 is provided with an LCD screen 4, a button 5 and an LED light 6 from top to bottom. The side of the cabinet 2 is provided with tempered glass 3, which is located on one side of the LCD screen 4.

[0031] The input terminals of the LCD screen 4, button 5, and LED light 6 are all connected to the main controller 15 via corresponding wires. The LCD screen 4 is used to intuitively display various parameters during the charging process, such as charging voltage, current, power, and charging time. The tempered glass 3 can shield and protect the display surface of the LCD screen 4. There are three sets of buttons 5, which allow users to adjust parameters and start the charging operation. The LED light 6 uses different colors and flashing frequencies to intuitively reflect the working status of the charging pile, such as charging in progress, fully charged, or faulty.

[0032] In this embodiment, casters 11 are provided at the corner of the bottom of the cabinet 2.

[0033] The universal wheels 11 are provided in four sets, which facilitates the movement of the entire charging device.

[0034] In this embodiment: A lifting assembly is provided on the side of the cabinet 2. The lifting assembly includes a positioning plate 19, a positioning groove, a positioning column 23, and a lifting plate 24. The positioning plate 19 is provided on the side of the cabinet 2. The positioning groove is opened on the positioning plate 19. The positioning column 23 is movably connected in the positioning groove. The lifting plate 24 is provided on the positioning column 23. The positioning groove includes a guide groove 20, a first positioning groove 21, and a second positioning groove 22. The guide groove 20, the first positioning groove 21, and the second positioning groove 22 are all opened through the positioning plate 19, and the first positioning groove 21 and the second positioning groove 22 are respectively connected to the guide groove 20.

[0035] In this application, there are two sets of positioning plates 19, and there are also two sets of positioning inclined grooves 21, 22 and 23. Positioning inclined grooves 21 and 22 are both inclined. The movable positioning column 23 can move in the guide groove 20, positioning inclined groove 21 and positioning inclined groove 22 respectively. Since the positioning column 23 can be flexibly locked in positioning inclined groove 21 or positioning inclined groove 22, the height of the lifting plate 24 on the positioning column 23 can be easily adjusted.

[0036] In this embodiment: the lifting assembly is provided with an anti-slip support body, and a fixed frame 25 is provided at one end of the lifting plate 24. The anti-slip support body includes multiple support blocks 1 26 and multiple support blocks 261, and the multiple support blocks 1 26 and multiple support blocks 261 are all provided at the bottom of the fixed frame 25.

[0037] In this application, both support block 1 26 and support block 261 are arranged in a triangular structure, and multiple support blocks 1 26 and support blocks 261 are distributed at intervals at the bottom of the fixing frame 25. At the same time, support blocks 1 26 and support blocks 261 are inclined in two directions respectively.

[0038] When it is necessary to stabilize the position of the entire portable DC charging device, the positioning column 23 on the lifting plate 24 is moved by tilting one end of the control cabinet 2. At this time, the positioning column 23 can enter the guide groove 20 from the position of the first positioning groove 21, and then enter the second positioning groove 22 through the guide groove 20. In this way, the position of the first support block 26 and the second support block 261 can be lower than the height of the universal wheel 11. After the first support block 26 and the second support block 261 are supported on the ground, the staggered and inclined support of the first support block 26 and the second support block 261 provides multi-point support, which can improve the anti-slip performance and ensure the stability of the charging state of the portable DC charging device. Moreover, since the lifting component can achieve rapid height adjustment, it can improve the operational flexibility of the anti-slip support. Similarly, when the positioning column 23 is adjusted into the first positioning groove 21, the height of the first support block 26 and the second support block 261 can be higher than the position of the universal wheel 11, so the portable DC charging device can be moved using the universal wheel 11.

Claims

1. A portable DC charging device, comprising a housing cover (1) and a cabinet (2) disposed on the housing cover (1), characterized in that: The inner wall of the cabinet (2) is provided with an installation plate (13), and a charging system is provided between the cabinet (2) and the installation plate (13). A charging gun (7) is provided on the outer side of the cabinet (2), and the charging gun (7) is electrically connected to the charging system. The cabinet (2) is provided with casters (11) at the corner of the bottom, and a lifting assembly is provided on the side of the cabinet (2), with an anti-slip support on the lifting assembly.

2. The portable DC charging device according to claim 1, characterized in that: The top of the outer casing (1) is provided with a handle (101), and the top of the outer casing (1) is also provided with a 4G antenna (102).

3. A portable DC charging device according to claim 1, characterized in that: The cabinet (2) is provided with sealing plates (201) on the front and rear sides, and ventilation plates (202) are provided on the left and rear sides.

4. A portable DC charging device according to claim 1, characterized in that: The cabinet (2) is provided with an LCD screen (4), a button (5) and an LED light (6) from top to bottom on its side. The cabinet (2) is also provided with tempered glass (3) on its side, which is located on one side of the LCD screen (4).

5. A portable DC charging device according to claim 3, characterized in that: The charging system includes a switching power supply (8), a miniature circuit breaker (81), an auxiliary power switching board (82), an AC input terminal (9), an AC input main switch (10), a shunt (12), a DC meter (121), and a high-frequency AC / DC charging module (18) respectively installed in the cabinet (2). The ventilation plate (202) is located at the end of the high-frequency AC / DC charging module (18). The AC input terminal (9) and the AC input main switch (10) both pass through the cabinet (2).

6. A portable DC charging device according to claim 5, characterized in that: The charging system also includes an analog information acquisition unit (14), a main controller (15), an AC contactor (161), a DC contactor (16), and a DC fuse (17) respectively installed on the mounting plate (13).

7. A portable DC charging device according to claim 6, characterized in that: The AC input terminal (9), miniature circuit breaker (81), switching power supply (8), and auxiliary power switching board (82) are electrically connected in sequence. The auxiliary power switching board (82) is bidirectionally electrically connected to the charging gun (7). The output terminal of the switching power supply (8) is electrically connected to the input terminal of the main controller (15). The AC input main switch (10), AC contactor (161), high-frequency AC / DC charging module (18), and DC contactor (16) are electrically connected in sequence. The DC fuse (17) and shunt (12) are connected in series. Between the DC contactor (16) and the charging gun (7), the output terminal of the shunt (12) is electrically connected to the input terminals of the DC meter (121) and the analog information acquisition device (14), respectively. The analog information acquisition device (14) is bidirectionally electrically connected to the charging gun (7). The main controller (15) is bidirectionally electrically connected to the DC meter (121), the DC contactor (16), and the high-frequency AC / DC charging module (18), respectively. The output terminal of the main controller (15) is electrically connected to the input terminal of the AC contactor (161).

8. A portable DC charging device according to claim 1, characterized in that: The lifting assembly includes a positioning plate (19), a positioning groove, a positioning column (23), and a lifting plate (24). The positioning plate (19) is located on the side of the cabinet (2). The positioning groove is opened on the positioning plate (19). The positioning column (23) is movably connected in the positioning groove. The lifting plate (24) is located on the positioning column (23).

9. A portable DC charging device according to claim 8, characterized in that: The positioning groove includes a guide groove (20), a positioning inclined groove one (21) and a positioning inclined groove two (22). The guide groove (20), the positioning inclined groove one (21) and the positioning inclined groove two (22) are all opened through the positioning plate (19), and the positioning inclined groove one (21) and the positioning inclined groove two (22) are respectively connected to the guide groove (20).

10. A portable DC charging device according to claim 9, characterized in that: One end of the lifting plate (24) is provided with a fixed frame (25), and the anti-slip support includes multiple support blocks one (26) and multiple support blocks two (261). Multiple support blocks one (26) and multiple support blocks two (261) are all located at the bottom of the fixed frame (25).

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