Charging module and mobile charging equipment

By designing the modular electrical connection of the charging module and mobile charging equipment, the problem of efficient location selection and convenient battery replacement of charging cabinets in the city is solved, flexible arrangement and efficient battery replacement are achieved, and installation costs and space adaptability are reduced.

CN223266648UActive Publication Date: 2025-08-26BEIJING DIDI INFINITY TECH & DEV CO LTD
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Patent Information

Application Number
CN202422280932.8
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-09-18
Publication Date
2025-08-26
Estimated Expiration
2034-09-18

AI Technical Summary

Technical Problem

How to optimize the location and design of charging cabinets in cities to facilitate efficient battery swap operations of electric bicycles in areas with high traffic flow and crowded traffic, and reduce the installation difficulty and volume requirements of charging cabinets.

Method used

A charging module is designed to electrically connect the charging unit and the energy storage unit through an electrical connection, power is supplied with a recharge plug, and move it through a transport truck to achieve modular design and convenient battery replacement.

Benefits of technology

It reduces the installation difficulty and manufacturing cost of the charging module, facilitates flexible layout in the city, improves the efficiency of the battery rotation and optimization of the charging method, and meets the needs of different space layout.

✦ Generated by Eureka AI based on patent content.

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Abstract

The embodiment of the utility model discloses a charging module and a mobile charging device, a charging part and an energy storage part are electrically connected through an electric connection part, and the energy storage part can supply power to a plurality of charging units, so that a battery compartment can be matched with a charging plug to charge a plurality of batteries. Therefore, on one hand, the charging part and the energy storage part which are independently arranged can meet the modular design requirement of the charging module, so that the charging module can be independently configured according to the size of the arrangement space, the manufacturing cost of the charging module is reduced, and the charging module is convenient to carry. In addition, an electricity supplementing plug arranged on the energy storage part can supplement electric energy for the energy storage unit. And on the other hand, the charging module is arranged on the carrying vehicle to form the mobile charging equipment, the mobile charging equipment can optimize the charging mode of the battery, and operation and maintenance personnel can replace the battery of the electric bicycle with insufficient power in time. And meanwhile, the batteries can be charged without being carried back to a fixed charging cabinet, so that the battery rotation use efficiency is improved.
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Description

Technical Field

[0001] The utility model relates to the technical field of battery replacement, and in particular to a charging module and a mobile charging device. Background Art

[0002] The compact size of electric bicycles has led to their increasing use in daily commutes. Battery swapping for electric bicycles can effectively address the problem of recharging. Placing charging cabinets in areas with high e-bike usage facilitates battery replacement. However, these areas often experience high traffic and pedestrian traffic, making location selection for charging cabinets challenging and placing higher demands on their size. Optimizing charging cabinets for urban use has become a pressing issue. Utility Model Content

[0003] In view of this, the present invention provides a charging module and mobile charging device. The charging unit and energy storage unit are connected by an electrical connector, allowing the energy storage unit to supply power to the charging unit and recharge the energy storage unit via a recharging plug. This simplifies the installation of the charging module and enables the charging module to be moved using a transport vehicle.

[0004] According to a first aspect of an embodiment of the present utility model, a charging module is provided, comprising:

[0005] electrical connection portion;

[0006] a charging unit, comprising a plurality of charging units, each of which comprises a battery compartment and a charging plug; and

[0007] The energy storage unit supplies power to the charging unit through the electrical connection unit and includes an energy storage unit and a power supply plug electrically connected to the energy storage unit.

[0008] Furthermore, a plurality of the charging units are assembled to form a charging cabinet;

[0009] The electrical connection portion includes a plurality of power supply harnesses corresponding to the plurality of charging units, and each charging unit is electrically connected to the energy storage portion through the corresponding power supply harness.

[0010] Furthermore, the electrical connection portion further includes a plurality of communication harnesses;

[0011] The charging module also includes a central control unit, which is arranged in the energy storage part or the charging part, and the central control unit is connected to the charging part and the energy storage part through the communication harness.

[0012] Furthermore, the central control unit includes a communication module;

[0013] The central control unit is arranged in the charging cabinet and communicates with the server through the communication module.

[0014] Furthermore, the charging module further includes:

[0015] The fire protection unit includes multiple sensors, and the multiple sensors are respectively arranged in multiple battery compartments and / or multiple energy storage units. The sensors include at least one of optical sensors, oxygen concentration sensors, temperature sensors or smoke sensors, and the multiple sensors are electrically connected to the central control unit.

[0016] Furthermore, the fire fighting unit further comprises:

[0017] Pump body;

[0018] Fire extinguishing agent storage tanks;

[0019] The pipeline is connected to the fire extinguishing agent storage box, the multiple battery compartments and the energy storage unit through the pump body.

[0020] Furthermore, the energy storage unit also includes a battery management system;

[0021] There are multiple energy storage units, and the multiple energy storage units are assembled to form an energy storage cabinet, and the battery management system is arranged in the energy storage cabinet;

[0022] The energy storage cabinet is arranged adjacent to the charging cabinet and is electrically connected to the charging cabinet through the power supply harness, and the battery management system is electrically connected to the central control unit through the communication harness.

[0023] In a second aspect, an embodiment of the present utility model further provides a mobile charging device, the mobile charging device comprising:

[0024] a transport vehicle, including storage space; and

[0025] The charging module is arranged in the accommodating space and includes an electrical connection part, a charging part and an energy storage part. The charging part includes multiple charging units, and the charging unit includes a battery compartment and a charging plug. The energy storage part supplies power to the charging unit through the electrical connection part and includes an energy storage unit and a power supply plug electrically connected to the energy storage unit.

[0026] Furthermore, the electrical connection portion includes a plurality of power supply harnesses corresponding to the plurality of charging units;

[0027] A plurality of the charging units are assembled to form a charging cabinet;

[0028] There are multiple energy storage units, and the multiple energy storage units are assembled to form an energy storage cabinet. The energy storage cabinet is arranged adjacent to the charging cabinet and is electrically connected to the charging cabinet through the power supply harness.

[0029] Furthermore, the transport vehicle further comprises a drive motor;

[0030] The energy storage unit further includes a battery management system, and the energy storage unit supplies power to the driving motor and the charging unit through the battery management system.

[0031] Furthermore, the charging plug includes at least one plug compatible with the charging pile plug.

[0032] The charging module of the embodiment of the present invention utilizes an electrical connection part to electrically connect the charging part and the energy storage part. The energy storage part can supply power to multiple charging units, so that the battery compartment can be used with the charging plug to charge multiple batteries. Therefore, on the one hand, the independently arranged charging part and energy storage part can meet the modular design requirements of the charging module, so that the charging module can be independently configured according to the size of the layout space, reducing the manufacturing cost of the charging module and facilitating transportation. In addition, the charging plug arranged in the energy storage part can replenish electric energy for the energy storage unit. On the other hand, arranging the charging module on a transport vehicle can form a mobile charging device, which can optimize the charging method of the battery, and the operation and maintenance personnel can replace the battery of the electric bicycle that is out of power in time. At the same time, the battery does not need to be transported back to a fixed charging cabinet for charging, which improves the efficiency of battery rotation. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] The above and other objects, features and advantages of the present invention will become more apparent through the following description of the embodiments of the present invention with reference to the accompanying drawings, in which:

[0034] Figure 1 This is a schematic diagram of the system architecture of the charging module according to an embodiment of the present utility model;

[0035] Figure 2 This is a schematic structural diagram of a charging module according to an embodiment of the present utility model;

[0036] Figure 3 This is a structural diagram of one side of the charging cabinet and fire extinguishing agent storage box of an embodiment of the present utility model;

[0037] Figure 4 This is a schematic structural diagram of the other side of the charging cabinet and fire extinguishing agent storage box of an embodiment of the present utility model;

[0038] Figure 5 This is a schematic diagram of the internal structure of the charging cabinet according to an embodiment of the present utility model;

[0039] Figure 6 It is a structural diagram of a mobile charging device according to an embodiment of the present utility model;

[0040] Figure 7It is a circuit diagram of a mobile charging device according to an embodiment of the present utility model.

[0041] Description of reference numerals:

[0042] 1-Charging unit;

[0043] 11-charging unit; 111-battery compartment; 112-charging plug;

[0044] 2-Energy Storage Department;

[0045] 21-Energy storage unit; 22-Recharging plug; 23-Battery management system;

[0046] 3- electrical connection portion;

[0047] 4-Central control unit;

[0048] 5- Firefighting unit;

[0049] 51-sensor; 52-pump body; 53-fire extinguishing agent storage tank; 54-pipeline;

[0050] 6-Transporter;

[0051] 61-accommodation space; 62-driving motor. DETAILED DESCRIPTION

[0052] The present invention is described below based on embodiments, but the present invention is not limited to these embodiments. Certain specific details are described in detail in the detailed description of the present invention below. Those skilled in the art will be able to fully understand the present invention without these details. To avoid obscuring the essence of the present invention, well-known methods, processes, procedures, components, and circuits are not described in detail.

[0053] Furthermore, persons of ordinary skill in the art will appreciate that the figures provided herein are for illustration purposes only and are not necessarily drawn to scale.

[0054] Unless the context clearly requires otherwise, words like “include”, “comprising” and the like throughout this application should be interpreted as including rather than exclusive or exhaustive; that is, as meaning “including but not limited to”.

[0055] In the description of the present invention, it should be understood that the terms "first," "second," etc. are used for descriptive purposes only and are not to be understood as indicating or implying relative importance. In addition, in the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0056] Unless otherwise specified or limited, the terms "mounted," "connected," "connect," "fixed," and the like should be interpreted broadly. For example, they may refer to fixed connection, detachable connection, or integration; they may refer to direct connection or indirect connection through an intermediate medium; they may refer to internal communication between two components or interaction between two components, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0057] Figure 1 Schematic diagram of the system architecture of the charging module of this embodiment. Figure 2 Schematic diagram of the structure of the charging module of this embodiment. Figure 3 and Figure 4 It is a structural diagram of the charging cabinet and the fire extinguishing agent storage box 53 of this embodiment. Figure 5 Schematic diagram of the internal structure of the charging cabinet of this embodiment.

[0058] In some embodiments, as Figure 1 As shown, the charging module in this embodiment includes a charging part 1, an energy storage part 2 and an electrical connection part 3, and the energy storage part 2 supplies power to the charging part 1 through the electrical connection part 3.

[0059] Further reference Figure 3-Figure 5 As shown, the charging part 1 includes a plurality of charging units 11. The charging unit 11 includes a battery compartment 111 and a charging plug 112. The battery compartment 111 in this embodiment is used to accommodate the battery of the electric bicycle, which can be a shared electric motorcycle. The operation and maintenance personnel can remove multiple batteries in a low-power state located at the same parking spot from the electric bicycle, and then place them one by one in the battery compartment 111. And the charging plug 112 is electrically connected to the battery to charge the battery of the electric bicycle. At the same time, the battery in a fully charged state in the charging part 1 can also be taken out of the battery compartment 111 and installed on the electric bicycle, thereby completing the battery replacement operation.

[0060] Optionally, the charging unit 11 in this embodiment may include a plurality of battery compartments 111 and a plurality of charging plugs 112 corresponding to the plurality of battery compartments 111. Figure 5 As shown, each charging unit 11 in the figure includes two horizontally arranged battery compartments 111 , and each battery compartment 111 is provided with a charging plug 112 .

[0061] Further reference Figure 2As shown, the energy storage part 2 includes an energy storage unit 21 and a charging plug 22 electrically connected to the energy storage unit 21. The charging plug 22 is used to replenish electric energy for the energy storage unit 21 when the energy storage unit 21 is in a power-deficient state. The energy storage unit 21 can be configured to have a higher rated capacity. For example, each charging unit 11 is configured to have a 30kWh power battery so that the charging module can have a longer working time. At the same time, the charging plug 22 can be configured to have a higher voltage and current level to increase the charging efficiency of the energy storage part 2. For example, a 10A three-pin plug connected to a household three-hole socket, a DC fast charging plug or a slow charging plug connected to an electric vehicle charging pile.

[0062] In summary, the charging module of this embodiment uses the electrical connection part 3 to electrically connect the charging part 1 and the energy storage part 2. The energy storage part 2 can power multiple charging units 11, so that the battery compartment 111 can be used with the charging plug 112 to charge multiple batteries. Therefore, the independently arranged charging part 1 and energy storage part 2 can meet the modular design requirements of the charging module, so that the charging part 1 can be independently configured according to the size of the layout space, reducing the manufacturing cost of the charging module. At the same time, it is convenient to use the transport vehicle 6 for transportation. In addition, the power supply plug 22 provided in the energy storage part 2 can replenish electrical energy for the energy storage unit 21.

[0063] Optionally, the charging unit 1 may be further provided with a discharge unit, which can be used to discharge the batteries in the battery compartment 111 to improve the balance of the batteries.

[0064] In some embodiments, as Figure 1-Figure 3 As shown, in this embodiment, multiple charging units 11 are assembled to form a charging cabinet. For example, the height of the charging cabinet can be increased by stacking them. Horizontally, multiple charging units 11 are placed side by side to increase the length or width of the charging cabinet. The electrical connection portion 3 includes multiple power supply harnesses corresponding to the multiple charging units 11. Each charging unit 11 is electrically connected to the energy storage portion 2 via the corresponding power supply harness.

[0065] The charging cabinet in this embodiment is assembled from multiple charging units 11, which can reduce the manufacturing cost of the charging unit 1. Operations and maintenance personnel can adjust the assembly method of the charging units 11 based on the size of the layout space and the number of electric bicycles in the area. This facilitates the adjustment of the charging module size to meet the modular design requirements of the charging unit 1.

[0066] Specifically, the electrical connection unit 3 also includes a main wiring harness, which can be made of a 70kW single-core copper cable. The power supply harness includes a first end and a second end. The first ends of the power supply harnesses are connected to the charging plugs 112 in a one-to-one correspondence, and the second ends are connected to the energy storage unit 2 through the main wiring harness.

[0067] In some embodiments, as Figure 1 As shown, the electrical connection part 3 also includes multiple communication harnesses. The charging module also includes a central control unit 4, which is arranged in the energy storage part 2 or the charging part 1 and is connected to the charging part 1 and the energy storage part 2 through a communication harness.

[0068] The central control unit 4 in this embodiment is used to control the power transmission between the charging unit 1 and the energy storage unit 2. The communication wiring harness is configured to be wired according to the CAN bus protocol, thereby improving the reliability of signal transmission between the charging unit 1, the energy storage unit 2 and the central control unit 4.

[0069] In some embodiments, as Figure 1 and Figure 5 As shown, the charging module also includes a fire protection unit 5, which includes multiple sensors 51. The multiple sensors 51 are respectively disposed in the multiple battery compartments 111 and / or the multiple energy storage units 21. The sensors 51 include at least one of an optical sensor 51, an oxygen concentration sensor 51, a temperature sensor 51, or a smoke sensor 51, and the multiple sensors 51 are electrically connected to the central control unit 4.

[0070] The central control unit 4 in this embodiment detects whether the energy storage unit 21 and the battery have abnormal conditions such as overheating, burning or smoking through the sensor 51 set in the battery compartment 111 and the energy storage unit 21, thereby realizing real-time detection of the charging part 1 and the energy storage part 2 and improving the safety of the charging module.

[0071] Optionally, the charging module further includes an alarm unit, which can alert people around the charging module through sound signals and light signals to promptly cut off the power supply and stay away from the charging module.

[0072] In some embodiments, as Figure 4-Figure 5 As shown, the fire fighting unit 5 further includes a pump body 52, a fire extinguishing agent storage tank 53 and a pipeline 54. The pipeline 54 is connected to the fire extinguishing agent storage tank 53, a plurality of battery compartments 111 and the energy storage unit 21 through the pump body 52.

[0073] Specifically, if Figure 4 As shown, a fire extinguishing agent storage tank 53 is located at the top of the charging cabinet and is filled with fire extinguishing agent. This fire extinguishing agent includes, but is not limited to, fluoroprotein foam or phosphate. Placing the fire extinguishing agent storage tank 53 at a higher position helps the pump 52 to inject the fire extinguishing agent from the fire extinguishing agent storage tank 53 into the battery compartment 111 or energy storage unit 21 in the event of a fire, thereby preventing the fire from occurring.

[0074] Optionally, the pump body 52 can be arranged outside the charging cabinet or inside the battery compartment 111 to make the appearance of the charging cabinet more beautiful.

[0075] Furthermore, the central control unit 4 includes a communication module. The central control unit 4 is arranged in the charging cabinet and communicates with the server through the communication module.

[0076] In this embodiment, the central control unit 4 is installed in the charging cabinet and is configured to communicate with the pump body 52. ​​This facilitates modular design of the charging unit 1. For example, maintenance personnel can configure the central control unit 4 based on the number of charging units 11 and the type and number of sensors 51. This allows the central control unit 4 to upload signals collected by the sensors 51 to the server or download control instructions from the server. The central control unit 4 can also control the pump body 52 to inject fire extinguishing agent into the corresponding battery compartment 111 or energy storage unit 21 when the sensor 51 detects a fire.

[0077] In some embodiments, as Figure 1 and Figure 2 As shown, the energy storage unit 2 also includes a battery management system 23. Multiple energy storage units 21 are assembled into an energy storage cabinet, and the battery management system 23 is located within the cabinet. The cabinet is adjacent to the charging cabinet and is electrically connected to the cabinet via a power supply harness. The battery management system 23 is electrically connected to the central control unit 4 via a communication harness.

[0078] The battery management system 23 in this embodiment is used to control the energy storage unit 21 to supply power to the charging part 1, estimate the power of the battery and the energy storage unit 21, and protect the battery from overcurrent, overcharge or overdischarge.

[0079] Figure 6 Schematic diagram of the structure of the mobile charging device of this embodiment.

[0080] In an optional implementation, if Figure 6 As shown, the charging module in the above embodiment can be applied to a mobile charging device, which also includes a transport vehicle 6. The charging module is disposed in a receiving space 61 of the transport vehicle 6. The transport vehicle 6 includes, but is not limited to, a tricycle or a truck. For example, the bucket of a tricycle forms the receiving space 61. For example, the cargo box of a truck forms the receiving space 61.

[0081] Further reference Figure 1-Figure 5 As shown, the charging module includes an electrical connection portion 3, a charging unit 1, and an energy storage unit 2. The charging unit 1 includes multiple charging units 11, each of which includes a battery compartment 111 and a charging plug 112. The energy storage unit 2 supplies power to the charging units 11 via the electrical connection portion 3 and includes an energy storage unit 21 and a charging plug 22 electrically connected to the energy storage unit 21.

[0082] In summary, the mobile charging device of this embodiment utilizes the electrical connector 3 of the charging module to electrically connect the charging unit 1 and the energy storage unit 2. The energy storage unit 2 can power multiple charging units 11, allowing the battery compartment 111 to charge multiple batteries in conjunction with the charging plug 112. Thus, on the one hand, the independently configured charging unit 1 and energy storage unit 2 meet the modular design requirements of the charging module, allowing the charging module to be configured according to the size of the storage space 61, reducing the manufacturing cost of the charging module and facilitating its installation on the transport vehicle 6. Furthermore, the charging plug 22 provided in the energy storage unit 2 can also replenish the energy storage unit 21. This allows the transport vehicle 6 to move the charging module to the energy replenishment device for recharging. Furthermore, the mobile charging device can optimize battery charging methods, allowing operators to promptly replace batteries in electric bicycles that are low on power. Furthermore, batteries no longer need to be transported back to a fixed charging cabinet for charging, improving the efficiency of battery rotation. Furthermore, the transport vehicle 6 can also quickly transport charging modules to different areas of a city, facilitating the timely adjustment of the distribution of charging modules within the city.

[0083] In some embodiments, as Figure 1-Figure 5 As shown, the electrical connection portion 3 includes multiple power supply harnesses. Multiple charging units 11 are assembled to form a charging cabinet. There are multiple energy storage units 21, and multiple energy storage units 21 are assembled to form an energy storage cabinet. The energy storage cabinet and the charging cabinet are arranged adjacent to each other and are electrically connected via the power supply harness.

[0084] In this embodiment, multiple charging units 11 and multiple energy storage units 21 are assembled into a charging cabinet and an energy storage cabinet, which are secured using bolts or welding. This allows operators to adjust the length, height, and width of the charging cabinet and energy storage cabinet based on the size of the cargo box or truck bed, allowing the charging module to better adapt to different trucks 6.

[0085] Figure 7 Schematic diagram of the circuit of the mobile charging device of this embodiment.

[0086] In some embodiments, as Figure 7 As shown, the transport vehicle 6 further includes a drive motor 62 . The energy storage unit 2 further includes a battery management system 23 , through which the energy storage unit 2 supplies power to the drive motor 62 and the charging unit 11 .

[0087] The transport vehicle 6 in this embodiment is driven by a drive motor 62. For this purpose, the energy storage unit 21 is configured to be able to simultaneously power the charging unit 11 and the drive motor 62, so that the transport vehicle 6 does not need to be equipped with a separate power battery, thereby reducing the manufacturing cost of the transport vehicle 6.

[0088] Furthermore, the charging plug 22 includes at least one plug compatible with the charging pile plug. Thus, the mobile charging device can move the charging module to the parking position of the nearest charging pile for rapid charging, thereby improving the efficiency of the mobile charging device.

[0089] Specifically, the number of charging plugs 22 can be multiple and of different types to accommodate different types of electric vehicle charging piles. For example, an AC charging plug (7-pin plug) and a DC charging plug (9-pin plug) that meet the GB / T 20234 standard can be used to meet the interface format of charging piles of different models.

[0090] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will appreciate that various modifications and variations are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention are intended to fall within the scope of protection of the present invention.

Claims

1. A charging module, characterized in that: The charging module includes: an electrical connection portion (3); A charging unit (1) includes a plurality of charging units (11), each of the charging units (11) including a battery compartment (111) and a charging plug (112); and The energy storage unit (2) supplies power to the charging unit (11) through the electrical connection unit (3) and comprises an energy storage unit (21) and a power supply plug (22) electrically connected to the energy storage unit (21).

2. The charging module according to claim 1, characterized in that: A plurality of the charging units (11) are assembled to form a charging cabinet; The electrical connection portion (3) includes a plurality of power supply harnesses corresponding to the plurality of charging units (11), and each charging unit (11) is electrically connected to the energy storage portion (2) via the corresponding power supply harness.

3. The charging module according to claim 2, characterized in that: The electrical connection portion (3) further includes a plurality of communication wiring harnesses; The charging module further comprises a central control unit (4), which is arranged in the energy storage unit (2) or the charging unit (1), and is connected to the charging unit (1) and the energy storage unit (2) via the communication harness.

4. The charging module according to claim 3, characterized in that: The central control unit (4) includes a communication module; The central control unit (4) is arranged in the charging cabinet and communicates with the server through the communication module.

5. The charging module according to claim 3, characterized in that: The charging module also includes: A fire protection unit (5) includes a plurality of sensors (51), wherein the plurality of sensors (51) are respectively arranged in a plurality of battery compartments (111) and / or a plurality of energy storage units (21), wherein the sensors (51) include at least one of an optical sensor (51), an oxygen concentration sensor (51), a temperature sensor (51) or a smoke sensor (51), and the plurality of sensors (51) are electrically connected to the central control unit (4).

6. The charging module according to claim 5, characterized in that: The fire fighting unit (5) further comprises: Pump body (52); Fire extinguishing agent storage tank (53); The pipeline (54) is connected to the fire extinguishing agent storage box (53), the plurality of battery compartments (111) and the energy storage unit (21) through the pump body (52).

7. The charging module according to claim 3, characterized in that: The energy storage unit (2) further includes a battery management system (23); There are multiple energy storage units (21), and multiple energy storage units (21) are assembled to form an energy storage cabinet, and the battery management system (23) is arranged in the energy storage cabinet; The energy storage cabinet is arranged adjacent to the charging cabinet and is electrically connected to the charging cabinet via the power supply harness, and the battery management system (23) is electrically connected to the central control unit (4) via the communication harness.

8. A mobile charging device, characterized in that: The mobile charging device comprises: A transport vehicle (6) comprising a receiving space (61); and A charging module is arranged in the accommodating space (61) and comprises an electrical connection portion (3), a charging portion (1) and an energy storage portion (2); the charging portion (1) comprises a plurality of charging units (11); the charging unit (11) comprises a battery compartment (111) and a charging plug (112); the energy storage portion (2) supplies power to the charging unit (11) via the electrical connection portion (3) and comprises an energy storage unit (21) and a charging plug (22) electrically connected to the energy storage unit (21).

9. The mobile charging device according to claim 8, characterized in that: The electrical connection portion (3) includes a plurality of power supply harnesses; A plurality of the charging units (11) are assembled to form a charging cabinet; The number of the energy storage units (21) is multiple, and the multiple energy storage units (21) are assembled to form an energy storage cabinet. The energy storage cabinet is arranged adjacent to the charging cabinet and is electrically connected to the charging cabinet through the power supply harness.

10. The mobile charging device according to claim 8, characterized in that: The transport vehicle (6) further includes a drive motor (62); The energy storage unit (2) further includes a battery management system (23), and the energy storage unit (2) supplies power to the drive motor (62) and the charging unit (11) through the battery management system (23).

11. The mobile charging device according to claim 8, characterized in that: The charging plug (22) includes at least one plug compatible with the charging pile plug.