A large mobile power supply vehicle

Abstract

The application provides a large mobile power supply vehicle, comprising a carriage, a battery box, a battery rack, a plurality of detachable external battery packs and a power distribution module. The battery box is arranged in the carriage and is provided with an overall positioning and dismounting structure, facilitating overall pushing / pulling and quick replacement. The battery rack is located in the battery box and has a plurality of mounting positions, and the external battery packs can be detachably mounted thereon, and electrical connection is achieved through series and / or parallel connection structure therebetween. The power distribution module comprises a power taking unit, a power discharging unit and a charging unit, which are connected with the external battery packs, the self-provided battery packs and an external power source respectively, so as to realize energy collection, power supply output and bidirectional power compensation functions. The application has the advantages of high degree of modularization, quick replacement, flexible combination, strong adaptability and the like; supports a plurality of output voltages and power matching, and improves emergency power supply and remote operation capability; uniformly allocates internal and external battery resources, effectively improves vehicle endurance and operation and maintenance efficiency, and is suitable for a plurality of complex power supply scenes.

Description

Technical Field

[0001] This application relates to the field of charging, and more particularly to a large mobile power supply vehicle. Background Technology

[0002] With the rapid development of the new energy vehicle industry, the number of new energy vehicles in my country has continued to rise, driving a comprehensive transformation of energy consumption structure, power infrastructure, and after-sales service system. Compared with traditional fuel vehicles, pure electric vehicles are more dependent on charging methods, especially in high-frequency urban commuting, logistics delivery, and remote area usage scenarios. The frequency of problems such as "rapid battery depletion after fast charging" and "sudden power outages during the journey leading to vehicle paralysis" is increasing, seriously affecting users' travel experience and traffic safety.

[0003] Meanwhile, the traditional roadside assistance industry is facing a dramatic transformation under the impact of new energy technologies. Statistics show that the number of repair shops nationwide has plummeted from 901,000 to 626,000 in recent years, resulting in a significant loss of employees. Traditional assistance methods (such as towing) are inefficient and costly, making them unable to meet the urgent needs of emergency power replenishment for new energy vehicles. Currently, although some regions have begun to explore the use of mobile power supply vehicles for roadside power replenishment services, most products on the market still have significant technical shortcomings.

[0004] Limited functionality and poor adaptability: Existing power supply vehicles are generally structured as "fuel vehicles + external charging equipment", which only have basic charging functions and are difficult to adapt to the needs of different vehicle models, interfaces, voltage levels or load power.

[0005] Lacking intelligent control and energy management capabilities, most products are not equipped with high-voltage power distribution units, wireless communication systems, or control units, making it impossible to achieve intelligent multi-battery allocation, remote scheduling, battery status monitoring, and billing management.

[0006] Low operational efficiency and high energy consumption: The traditional fuel-powered chassis and built-in fixed battery design increase energy consumption and emissions, and make the recharging process complex. Once the battery is depleted, the entire vehicle must return to the base for charging, which severely limits the efficiency of deployment. Low modularity and difficulty in expansion: Current power supply vehicles are mostly of fixed capacity, and cannot dynamically add or remove batteries according to the scenario, which limits the ability to deploy flexibly and adapt to multiple scenarios.

[0007] Furthermore, electric vehicles are not only used as a means of transportation, but are also gradually participating in a wider range of energy systems, such as load power supply, emergency power generation, and renewable energy storage. The market urgently needs a new type of mobile power supply vehicle with intelligent dispatch capabilities, a detachable modular battery structure, and multi-interface / multi-voltage output capabilities to meet diverse energy replenishment and power supply needs. Utility Model Content

[0008] The purpose of this application is to solve the problems of traditional roadside assistance functions being limited, poorly adaptable, lacking intelligent control and energy management capabilities, and having low operation and maintenance efficiency and high energy consumption.

[0009] According to one aspect of this application, a large mobile power supply vehicle is provided, comprising:

[0010] car;

[0011] A battery box is installed inside the vehicle compartment, and a structure for overall positioning and disassembly is provided between the battery box and the vehicle compartment;

[0012] A battery rack is disposed inside the battery box, and the battery rack includes multiple mounting positions, each mounting position for detachably accommodating an external battery pack;

[0013] Multiple detachable external battery packs are disposed inside the battery box, and the multiple external battery packs are electrically connected through series and / or parallel connection structures;

[0014] The power distribution module, located inside the carriage, includes a power intake unit, a power discharge unit, and a charging unit.

[0015] The power acquisition unit is electrically connected to the external battery pack and the built-in battery pack of the large mobile power supply vehicle, respectively, to obtain electrical energy from the external battery pack and the built-in battery pack;

[0016] The discharge unit is electrically connected to an external device via a discharge gun, and supplies power to the external device.

[0017] The charging unit is connected to an external power source and is electrically connected to both the external battery pack and the built-in battery pack, charging both of them.

[0018] Preferably, the battery rack has a multi-layer structure, and each layer is provided with:

[0019] A pull-out tray rack is used to carry an external battery pack and facilitate its installation, removal and replacement;

[0020] A pair of guide rails are provided on both sides of the pallet frame, allowing the pallet frame to slide horizontally to achieve the pull-out function;

[0021] A locking mechanism, installed on the pallet rack or battery rack, is used to lock the pallet rack after it slides in, preventing the external battery pack from shifting or falling off during transportation.

[0022] Preferably, the battery rack includes a battery rack and a second battery rack. The battery rack is disposed inside the battery housing, and the second battery rack is slidably disposed in the hollow area of ​​the battery rack. The second battery rack is connected to the battery rack via a guide rail mechanism and can be pushed / pulled out from inside the battery rack along the guide rail. The battery rack and the second battery rack include a plurality of battery slots, each of which is used to detachably accommodate an external battery pack.

[0023] Preferably, the battery rack is provided with battery slots of different sizes to accommodate external battery packs of different sizes and specifications.

[0024] Preferably, the charging gun includes a DC charging gun and an AC charging gun.

[0025] Preferably, the external battery pack includes a battery pack and is equipped with a battery management system;

[0026] The battery management system monitors the voltage, current, and temperature parameters of individual battery cells and sends the monitoring data to the control unit.

[0027] Preferably, the carriage is also equipped with a fire early warning system, which includes a smoke sensor and an automatic fire extinguishing device;

[0028] The smoke sensor is connected to the control unit or the fire warning system;

[0029] The automatic fire extinguishing device is triggered by the control unit or fire early warning system to release the extinguishing agent.

[0030] Preferably, the battery housing is equipped with an air-cooling system and a liquid-cooling system, wherein:

[0031] The air-cooling system uses a fan to create an airflow channel, thereby achieving forced air convection cooling of the battery pack surface.

[0032] The liquid cooling system includes a coolant circulation channel and a heat exchange structure, used for direct contact cooling or contact cooling of the battery pack.

[0033] Preferably, the cooling system further includes a temperature sensing unit, which is used to collect temperature data of the external battery pack in real time and automatically start or stop the air-cooling system or liquid-cooling system according to a set threshold, so as to realize dynamic heat dissipation management driven by temperature control.

[0034] Preferably, the vehicle compartment is also equipped with a vehicle repair tool kit, which includes basic tools and special repair tools for emergency repairs, used for maintenance or troubleshooting of the vehicle body, battery system or power connection components during outdoor operations.

[0035] The large mobile power supply vehicle provided by this invention achieves a high degree of integration and modularity of power supply equipment by integrating a battery box, battery rack, multiple detachable external battery packs, and power distribution modules within the vehicle compartment. This results in the following advantages: High structural integration: The battery box is directly installed inside the vehicle compartment, and the overall positioning and disassembly structure allows the battery modules to be installed and replaced as a whole, improving system assembly efficiency and ease of maintenance. Flexible battery configuration: Multiple detachable external battery packs can be combined and connected in series and / or parallel according to actual power supply needs, supporting flexible adjustment of voltage and capacity to meet different power supply scenarios. Comprehensive power distribution function: The power distribution module integrates a power acquisition unit, a discharge unit, and a charging unit, enabling efficient acquisition, distribution, and transmission of electrical energy. The power acquisition unit simultaneously supports obtaining power from detachable battery packs and its own battery pack, ensuring continuous power supply; the discharge unit provides stable power to external devices through a discharge gun; and the charging unit supports simultaneous charging of multiple battery packs, improving charging efficiency. Supporting bidirectional energy flow, the system, through the coordinated design of the battery pack and power distribution module, enables both battery discharge and reverse charging from external power sources, enhancing the vehicle's energy dispatching capabilities and adapting to various application scenarios. With a wide range of applications, the mobile power supply vehicle of this invention features a compact structure and complete functionality, suitable for emergency charging of new energy vehicles, temporary outdoor power supply, and emergency power supply for engineering repairs, demonstrating excellent practicality and promotional value. In summary, this invention significantly surpasses existing technologies in terms of structural design, energy supply flexibility, and functional integration. It effectively solves the problems of limited functionality, low maintenance efficiency, and inconvenient energy dispatching in existing mobile power supply equipment, exhibiting strong technological advancement and application prospects. Attached Figure Description

[0036] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0037] Figure 1 This is a schematic diagram of the exterior of a large mobile power supply vehicle according to one embodiment of this application;

[0038] Figure 2 This is a schematic diagram of the exterior of a large mobile power supply vehicle according to one embodiment of this application;

[0039] Figure 3 This is a schematic diagram of the exterior of a large mobile power supply vehicle according to one embodiment of this application;

[0040] Figure 4This is a schematic diagram of the battery box as described in one embodiment of this application;

[0041] Figure 5 This is a schematic diagram of the battery box as described in one embodiment of this application;

[0042] Figure 6 This is a schematic diagram of the external appearance of the battery box according to another embodiment of this application;

[0043] Figure 7 This is a schematic diagram of the battery box as described in another embodiment of this application;

[0044] Figure 8 This is a schematic diagram of the appearance of the battery rack according to one embodiment of this application;

[0045] Figure 9 This is a top view of a large mobile power supply vehicle according to one embodiment of this application;

[0046] Figure 10 for Figure 9 The cross-sectional view at point AA is shown below;

[0047] Figure 11 for Figure 9 A cross-sectional schematic diagram of another embodiment shown at point AA.

[0048] The following are the diagram numbers: 100, Large mobile power supply vehicle; 10, Vehicle compartment; 20, Battery box; 30, Battery rack; 31, Second battery rack; 32, Tray rack; 33, Battery slot; 40, External battery pack; 41, Built-in battery pack; 50, Power distribution module; 51, Charging unit; 52, Discharging unit; 53, Power taking unit; 60, Charging gun. Detailed Implementation

[0049] To facilitate understanding of this application, a more complete description will be provided below with reference to the accompanying drawings. Preferred embodiments of this application are shown in the drawings. However, this application can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure of this application.

[0050] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the specification of this application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0051] Please refer to Figure 1 - Figure 11 This application provides a large mobile power supply vehicle 100, including: a carriage 10, a battery box 20, a battery rack 30, and a power distribution module 50. The battery box 20 is disposed within the carriage 10, and a structure for overall positioning and disassembly is provided between the battery box 20 and the carriage 10. The battery rack 30 is disposed within the battery box 20 and includes multiple battery positions 33, each battery position 33 for detachably accommodating an external battery pack 40. The multiple detachable external battery packs 40 are disposed within the battery box 20 and are electrically connected to each other through series and / or parallel connection structures. The power distribution module 50, located inside the carriage 10, includes a power taking unit 53, a discharge unit 52, and a charging unit 51. The power taking unit 53 is electrically connected to the external battery pack 40 and the self-contained battery pack 41 of the large mobile power supply vehicle 100, respectively, to obtain electrical energy from the external battery pack 40 and the self-contained battery pack 41. The discharge unit 52 is electrically connected to external equipment through a discharge gun to supply power to the external equipment. The charging unit 51 is connected to an external power source and is electrically connected to the external battery pack 40 and the self-contained battery pack 41, respectively, to charge the external battery pack 40 and the self-contained battery pack 41.

[0052] In this embodiment, it should be noted that the large mobile power supply vehicle 100 provided in this embodiment includes a carriage 10, a battery box 20, a battery rack 30, multiple external battery packs 40, and a power distribution module 50. The battery box 20 is disposed inside the carriage 10, and through the overall positioning and disassembly structure provided between the battery box 20 and the carriage 10, the battery box 20 can be pushed / pulled out, installed, and positioned and fixed as a whole, which facilitates maintenance and replacement.

[0053] The battery housing 20 houses a battery rack 30, which features a modular design with multiple battery slots 33 for detachably accommodating multiple standardized external battery packs 40. Each battery slot 33 can independently accommodate one battery pack, and the battery packs are connected in series and / or in parallel through conductive structures within the battery rack 30. This allows for flexible adjustment of the overall output voltage and capacity according to different output requirements, satisfying power matching needs in various application scenarios.

[0054] The battery pack features a detachable design for easy and quick replacement or maintenance. Battery capacity and configuration can be flexibly adjusted according to actual usage scenarios, preventing the vehicle from becoming unusable due to depleted battery power and improving range and operational efficiency. Batteries can be connected in series or parallel, meeting both high-voltage fast charging needs and adapting to different power levels, enhancing the vehicle's compatibility and adaptability. Notably, when powering multiple battery packs, the control unit has an intelligent allocation function. It can determine whether a single battery pack powers the load independently or multiple battery packs are connected in parallel for coordinated discharge, based on the real-time power demand of the load, optimizing power efficiency and battery lifespan. Simultaneously, when one battery pack is discharging, other non-discharging battery packs can be replaced, improving operational continuity.

[0055] In certain high-power supply scenarios, multiple external battery packs 40 can be connected in parallel to drive a single charging gun 60, forming a "many-to-one" power supply mode to meet the fast charging requirements of large vehicles or equipment. This discharge method adopts an "M+N" combination structure, where M is the vehicle's own power battery pack, and N are multiple detachable energy storage battery packs inside the vehicle compartment 10. All battery packs use standardized power batteries, which have advantages such as good consistency, high cycle life, and high safety performance, improving the overall charging and discharging stability and maintenance convenience of the system.

[0056] The power distribution module 50 is located inside the vehicle compartment 10 and includes a power intake unit 53, a discharge unit 52, and a charging unit 51. The power intake unit 53 is electrically connected to multiple external battery packs 40 and the vehicle's own battery pack, uniformly distributing power from different battery groups. The discharge unit 52 is electrically connected to external load devices via a discharge gun located outside the vehicle compartment 10, providing power output services. The discharge gun supports multiple standards and voltage levels of power output, with output interfaces including 110V, 220V, 380V, and 450V. Through series connection of multiple battery packs, the maximum voltage can reach 1200V or even higher, covering various power usage scenarios such as mains power, industrial power, and high-voltage DC. The charging unit 51 connects to the external power grid or mains input port and charges both the external battery packs 40 and the vehicle's own battery pack 41, supporting individual or simultaneous charging operations to improve charging efficiency.

[0057] The power distribution module 50 also includes a discharger and a charger to adapt to and manage the charging and discharging process of different power levels; a dedicated charging socket is provided on the outside of the carriage 10, which can be connected to an external power supply to complete the charging process of the whole vehicle and the on-board energy storage system.

[0058] The high-voltage power distribution unit manages the output of multiple battery packs, distributing power to each charging gun circuit 60 through internal electrical control logic. This ensures the independent and safe operation of each output channel, effectively reducing line interference and fault risks. The control unit, as the core management module of the vehicle, monitors battery status, controls the power distribution logic and the operating status of each charging gun 60, and can dynamically adjust the output mode based on input commands or system strategies. Furthermore, the control unit integrates a communication module, enabling wireless connection with external servers or mobile terminals. This allows for remote scheduling, real-time monitoring, uploading of battery status data, and issuing of charging control commands, laying the foundation for building an intelligent operation and maintenance platform.

[0059] In the overall vehicle structure, the external battery pack 40, battery rack 30, and battery box 20 all feature standardized interfaces and detachable designs. Combined with guide rails and locking mechanisms, this not only enables rapid replacement operations but also enhances safety and equipment stability during transportation. This embodiment demonstrates excellent modularity and adaptability in both structural integration and functional synergy.

[0060] The technical solution implemented in this embodiment has the following technical effects:

[0061] Firstly, by installing multiple detachable external battery packs 40 within the battery rack 30 and arranging them in the battery box 20 inside the vehicle compartment 10, a centralized layout of the energy modules is achieved. The battery pack structure is standardized, facilitating rapid disassembly, assembly, maintenance, and replacement, effectively improving energy replenishment efficiency and flexibility for later maintenance, and reducing overall operating costs.

[0062] Secondly, by setting up a series and parallel conductive structure, multiple battery packs can be flexibly networked and combined, allowing the output parameters to be flexibly adjusted according to the voltage and current requirements of different power supply objects, thus expanding the electrical adaptability range of the system and giving it stronger applicability and field deployment capabilities.

[0063] Third, the power distribution module 50 integrates power taking, discharging, and charging functions, enabling unified management and dynamic allocation of energy from the external battery pack 40 and the built-in battery pack 41. The power taking unit 53 supports parallel output of multiple power sources, the discharging unit 52 outputs multiple power supplies through the discharge gun interface, and the charging unit 51 supports simultaneous charging by external power sources, providing a stable and efficient energy flow path for the overall system.

[0064] Fourth, the entire system features a highly modular structural layout and flexible functional expansion capabilities, enabling the large mobile power supply vehicle 100 to adapt to emergency power supply, high-frequency charging, or remote power support tasks in different scenarios. Simultaneously, through standardized component interface design, the vehicle possesses excellent versatility and replicability, facilitating industrialization and mass deployment.

[0065] Therefore, this embodiment is significantly superior to existing technologies in terms of structural integration, system flexibility, operation and maintenance efficiency, and multi-power source collaborative management. It is particularly suitable for application needs in various scenarios such as mid-journey refueling of new energy vehicles, remote emergency power supply, and engineering operation support, and has significant technological progress and practical value.

[0066] Furthermore, in this embodiment, the battery rack 30 has a multi-layer structure, each layer having: a pull-out tray rack 32 for carrying the external battery pack 40 and facilitating its installation, disassembly and replacement; a pair of guide rails on both sides of the tray rack 32, allowing the tray rack 32 to slide horizontally to achieve the pull-out function; and a locking mechanism on the tray rack 32 or the battery rack 30 for locking the tray rack 32 after it slides in, preventing the external battery pack 40 from shifting or falling off during transportation.

[0067] Optionally, each layer of the battery pack is equipped with a quick-change mechanism (a forklift arm insertion groove that allows for easy insertion or removal of the forklift arm without damaging the battery pack or other components). Specifically, the quick-change mechanism includes a forklift arm slot structure located at the bottom of the battery pack or on the pallet rack. The slot is sized to match a standard forklift arm, allowing the forklift to be directly inserted into the groove to perform a pull-out operation of the battery pack or pallet.

[0068] In this embodiment, it should be noted that the battery rack 30 adopts a multi-layer structure layout. Each layer is equipped with a pull-out tray rack 32, a pair of guide rails, and a locking mechanism, which aims to achieve more efficient and safer installation and replacement of the external battery pack 40.

[0069] Specifically, each tray rack 32 serves as a direct support platform for the battery pack, supporting and housing the external battery pack 40. The tray rack 32 features a reinforced structural design to ensure sufficient mechanical strength and shock resistance under load. Guide rails are installed on both sides of the tray rack 32, connecting to the main body of the battery rack 30. The tray rack 32 can slide horizontally along the guide rails, enabling a pull-out function. This allows the external battery pack 40 to be installed or removed without needing to be fully inserted into the battery housing 20, effectively improving operational convenience.

[0070] To ensure that the battery pack does not shift or fall off during transportation, each pallet rack 32 is also equipped with a locking mechanism. The locking mechanism can be located on the pallet rack 32 itself or integrated into the battery rack 30 structure, working in conjunction with the pallet to physically lock the battery pack after insertion. This locking structure can be a mechanical latch, a spring-loaded pin lock, or an electronically controlled locking assembly, automatically locking after the pallet rack 32 slides into the predetermined position, preventing displacement of the pallet rack 32 due to bumps, vibrations, or inertia, thereby ensuring operational safety.

[0071] The multi-layer battery rack 30 design balances space utilization and ease of operation. It not only increases the loading density of the battery pack in vertical space, but also significantly simplifies the battery pack disassembly and assembly process through the pull-out structure, reducing the burden of manual operation and effectively improving the overall vehicle's operating efficiency and reliability.

[0072] The technical solution implemented in this embodiment has the following technical effects:

[0073] Firstly, the multi-layer battery rack 30 design achieves a high-density arrangement of battery packs within the limited interior space of the vehicle compartment 10. Compared with the traditional single-layer or fixed structure, it significantly improves the vehicle's energy carrying capacity and provides a basic guarantee for large-capacity power supply.

[0074] Secondly, each tray rack 32 adopts a pull-out structure, which, together with the guide rails on both sides, enables smooth sliding. This allows the battery pack to be inserted, removed, inspected, and replaced without entering the vehicle compartment 10 or disassembling the outer shell. Maintenance tasks can be easily completed even in confined or complex working conditions, greatly improving the efficiency and safety of on-site operation and maintenance.

[0075] Third, the locking mechanism installed on the pallet rack 32 or battery rack 30 can automatically or manually lock the pallet after it slides into position, effectively preventing the external battery pack 40 from shifting or falling off due to transportation vibration, ensuring equipment safety during transportation and operation, and enhancing the mechanical reliability of the overall system.

[0076] Fourth, the modular, multi-layer pull-out structure also makes it possible to be compatible with different battery pack specifications. In subsequent product upgrades, standard adjustments or cross-platform adaptations, it can quickly respond by adjusting the tray size and fixing method, so as to achieve high product adaptability and platform universality.

[0077] Therefore, the multi-layer tray-type pull-out battery rack 30 structure adopted in this embodiment has significant advantages in terms of space utilization, convenient maintenance, safety assurance and system scalability, providing better system support for the large mobile power supply vehicle 100 in complex power supply scenarios, and has high technical maturity and industrial promotion value.

[0078] Furthermore, the battery rack 30 includes a battery rack 30 and a second battery rack 31. The battery rack 30 is disposed inside the battery housing 20, and the second battery rack 31 is slidably disposed in the hollow area of ​​the battery rack 30. The second battery rack 31 is connected to the battery rack 30 through a guide rail mechanism and can be pushed / pulled out from inside the battery rack 30 along the guide rail. The battery rack 30 and the second battery rack 31 include a plurality of battery positions 33, each battery position 33 being used to detachably accommodate an external battery pack 40.

[0079] Optionally, multiple battery racks, such as a third battery rack and a fourth battery rack, may be provided. These subsequent battery racks are arranged in a similar hierarchical manner and are respectively housed in the hollow area of ​​their superior battery rack.

[0080] In this embodiment, it should be noted that the battery rack 30 adopts a double-layer or multi-layer nested structure design, including the battery rack 30 and a second battery rack 31 or more battery racks, to further improve the space utilization and operational flexibility of the battery system. Specifically, the battery rack 30 is fixedly installed inside the battery box 20, and its main structure is a hollow frame structure, which is used to provide shell support and internal sliding rail channels.

[0081] The second battery holder 31 is slidably disposed within the hollow area of ​​the battery holder 30, and the two are connected by a guide rail mechanism, allowing the second battery holder 31 to be pushed / pulled out from inside the battery holder 30 along the guide rail direction. The guide rail mechanism includes a guide rail groove disposed on the inner side of the battery holder 30 and a slider assembly disposed on the outer edge of the second battery holder 31. The guide rail mechanism ensures smooth sliding and uniform force distribution, while also providing sufficient load-bearing capacity and mechanical strength.

[0082] Battery rack 30 and second battery rack 31 are each provided with multiple battery slots 33 for accommodating removable external battery packs 40. The battery slots 33 adopt a standardized modular design, allowing for quick installation and removal of the battery packs via plug-and-play, facilitating maintenance and replacement. Furthermore, the sliding nested structure allows for expansion of the depth battery capacity within limited lateral space, increasing the overall load-bearing capacity while also facilitating layered management when operating the second battery rack 31 externally.

[0083] This structure is particularly suitable for large mobile power supply vehicles 100 with high requirements for power supply endurance, and is especially suitable for operations with limited space but high power output intensity.

[0084] The technical solution implemented in this embodiment has the following technical effects:

[0085] Firstly, the double-layer nested battery rack 30 structure significantly improves the utilization efficiency of the vehicle's interior space. By sliding and embedding the second battery rack 31 within the hollow area of ​​the battery rack 30, the battery pack carrying space is extended in the depth direction, effectively increasing the number of battery packs that can be installed and providing hardware support for high-capacity output.

[0086] Secondly, the push-in / pull-out design of the second battery rack 31 means that the entire battery rack 30 does not need to be disassembled during maintenance or replacement. Operators can directly pull the second battery rack 31 out of the battery rack 30 to perform operations such as installation, disassembly, and testing of the external battery pack 40, which greatly reduces the difficulty and time cost of manual maintenance.

[0087] Third, the guide rail mechanism ensures the stability and safety of the sliding process. The sliding resistance is controllable and the force is balanced. Even under full load, it can achieve smooth extraction and reset, which improves the overall durability and safety of the structure and avoids battery pack damage or operation accidents caused by slide rail imbalance or jamming.

[0088] Fourth, this nested structure provides flexible adjustment space for battery capacity configuration under different task scenarios. Users can choose whether to deploy all 33 battery slots according to current power supply needs, thereby achieving customized capacity expansion without affecting the overall vehicle structure and enhancing the system's adaptability and scalability.

[0089] In summary, this embodiment achieves the structural advantages of modularity, sliding, and layered management of the battery rack 30 through the sliding nested structure of the battery rack 30 and the second battery rack 31. This not only improves the loading density and replacement efficiency of the battery pack, but also enhances the reliability and ease of maintenance of the system. It is a preferred solution that combines engineering practicality and industrial promotion value.

[0090] Optionally, the battery rack 30 is provided with battery slots 33 of different sizes to accommodate external battery packs 40 of different sizes and specifications.

[0091] In this embodiment, it should be noted that, in order to improve the device's compatibility with different battery specifications, the battery rack 30 is provided with multiple battery slots of different sizes. Each battery slot 33 has been designed differently in terms of structural dimensions, mounting interface, and limiting frame to adapt to external battery packs 40 of different sizes and capacity levels.

[0092] Specifically, the battery rack 30 is designed with several standard battery slots 33 pre-defined, such as medium-sized slots for standard battery packs and large slots for high-capacity battery packs. The battery slots 33 of different sizes have structural differences in height, width, and depth, and the position and shape of the mounting interfaces are also adjusted accordingly to ensure that different external battery packs 40 can be accurately connected and securely fixed.

[0093] In addition, to ensure the stability of battery packs of different sizes during transportation and operation, each battery position 33 is equipped with corresponding limiting devices and universal connection structures, such as adjustable buckles, universal conductive interfaces, and soft-pack cushioning pads, to further improve installation flexibility and vibration resistance.

[0094] The technical solution implemented in this embodiment has the following technical effects:

[0095] Firstly, it effectively improves the system's compatibility and module expansion capabilities. By setting up battery slots 33 of various sizes and specifications, external battery packs 40 from different manufacturers and of different models can be flexibly connected, avoiding resource waste or modification costs caused by interface or structural incompatibility.

[0096] Secondly, it enables flexible management of the power supply system configuration. Users can choose to use external battery packs 40 with larger capacity or lighter weight according to actual task requirements, without being limited by a single specification, thereby achieving the optimal balance between range and vehicle weight control.

[0097] Third, it lowers the adaptation threshold of the product in different scenarios, and improves the versatility and market adaptability of the whole vehicle. Whether it is used for urban emergency energy replenishment, outdoor high-altitude power supply, or charging tasks for new energy vehicles of different brands, this structure can respond quickly and improve service coverage.

[0098] Fourth, it simplifies the later maintenance process. Since all types of battery slots 33 have pre-set standard interfaces and limit structures, maintenance personnel can directly replace the corresponding battery packs without making additional adjustments to the battery rack 30 itself, improving maintenance efficiency and reducing operational risks.

[0099] In summary, this embodiment achieves effective adaptation to various external battery packs 40 by setting battery positions 33 of different sizes, improving the system's versatility, scalability, and ease of operation and maintenance, and significantly enhancing the practical value and commercial flexibility of the large mobile power supply vehicle 100.

[0100] Optionally, the charging gun 60 includes a DC charging gun 60 and an AC charging gun 60.

[0101] In this embodiment, it should be noted that, in order to improve the device's compatibility with different battery specifications, the battery rack 30 is provided with multiple battery slots 33 of different sizes. Each battery slot 33 is designed differently in terms of structural dimensions, mounting interface, and limiting frame, so as to adapt to external battery packs 40 of different sizes and capacity levels.

[0102] Specifically, the battery rack 30 is designed with several standard battery slots 33 pre-defined, such as medium-sized battery slots 33 suitable for standard battery packs and large battery slots 33 suitable for high-capacity battery packs. The battery slots 33 of different sizes have structural differences in height, width and depth, and the position and shape of the mounting interface are also adjusted accordingly to ensure that different external battery packs 40 can be accurately connected and firmly fixed.

[0103] In addition, to ensure the stability of battery packs of different sizes during transportation and operation, each battery position 33 is equipped with corresponding limiting devices and universal connection structures, such as adjustable buckles, universal conductive interfaces, and soft-pack cushioning pads, to further improve installation flexibility and vibration resistance.

[0104] The technical solution implemented in this embodiment has the following technical effects:

[0105] Firstly, it effectively improves the system's compatibility and module expansion capabilities. By setting up battery slots 33 of various sizes and specifications, external battery packs 40 from different manufacturers and of different models can be flexibly connected, avoiding resource waste or modification costs caused by interface or structural incompatibility.

[0106] Secondly, it enables flexible management of the power supply system configuration. Users can choose to use external battery packs 40 with larger capacity or lighter weight according to actual task requirements, without being limited by a single specification, thereby achieving the optimal balance between range and vehicle weight control.

[0107] Third, it lowers the adaptation threshold of the product in different scenarios, and improves the versatility and market adaptability of the whole vehicle. Whether it is used for urban emergency energy replenishment, outdoor high-altitude power supply, or charging tasks for new energy vehicles of different brands, this structure can respond quickly and improve service coverage.

[0108] Fourth, it simplifies the later maintenance process. Since all types of battery slots 33 have pre-set standard interfaces and limit structures, maintenance personnel can directly replace the corresponding battery packs without making additional adjustments to the battery rack 30 itself, improving maintenance efficiency and reducing operational risks.

[0109] In summary, this embodiment achieves effective adaptation to various external battery packs 40 by setting battery positions 33 of different sizes, improving the system's versatility, scalability, and ease of operation and maintenance, and significantly enhancing the practical value and commercial flexibility of the large mobile power supply vehicle 100.

[0110] Furthermore, the external battery pack 40 includes a battery pack and is equipped with a battery management system; the battery management system monitors the voltage, current and temperature parameters of individual cells and sends the monitoring data to the control unit.

[0111] In this embodiment, it should be noted that, in order to improve the operational safety and system management intelligence of the external battery pack 40, the external battery pack 40 adopts a pack structure, which is composed of multiple battery cell units and equipped with an independent battery management system (BMS). The battery management system is responsible for real-time monitoring of the key parameters of each individual battery cell, including voltage, current, and temperature, and for evaluating, recording, and managing the battery status.

[0112] During monitoring, the BMS collects various parameters using high-precision sensors and integrated circuit modules, analyzes and processes the collected data to form a complete data packet containing information such as remaining power, charging / discharging status, and temperature rise trend, which is then sent in real time to the control unit in the power distribution module 50. Based on this data, the control unit performs intelligent scheduling and anomaly detection to ensure the system operates within a safe and stable operating range.

[0113] In addition, the BMS has a multi-level protection mechanism. When abnormal parameters (such as cell overheating, overvoltage, overcurrent or imbalance) are detected, the system will immediately feed back to the control unit to trigger a preset response, such as cutting off the circuit, current limiting protection or starting a cooling program to prevent the battery pack from failing or thermal runaway under extreme conditions.

[0114] The technical solution implemented in this embodiment has the following technical effects:

[0115] First, it enables precise monitoring and evaluation of the operating status of the external battery pack 40. By introducing a battery management system to independently monitor each cell, the system's ability to identify key risk indicators can be significantly improved, ensuring the safe and reliable operation of the entire vehicle's electrical system.

[0116] Secondly, it enhances the intelligence and automation level of the power supply system. After the BMS feeds back real-time monitoring data to the control unit, it can work with the overall system to perform dynamic load adjustment, battery balancing control, and energy management, thereby optimizing the vehicle's power supply efficiency and extending battery life.

[0117] Furthermore, it enhances accident prevention and response capabilities. Thanks to the BMS's anomaly warning mechanism and the control unit's rapid response logic, the system can provide early warnings and execute safety control measures at the initial stage of a fault, reducing risks such as fires and battery cell damage.

[0118] Furthermore, this solution enhances the maintainability of the external battery pack 40. Through data communication with the control unit, maintenance personnel can remotely or on-site read battery status information, enabling accurate diagnosis and rapid replacement, thus improving equipment maintenance efficiency.

[0119] In summary, this embodiment integrates a battery management system into the external battery pack 40, endowing the system with high reliability, visual management capabilities, and intelligent safety protection capabilities, providing a solid operational guarantee for the large mobile power supply vehicle 100, and is especially suitable for emergency power supply and outdoor operation scenarios with high requirements for power system stability.

[0120] Furthermore, a fire warning system is also installed inside the carriage 10, which includes a smoke sensor and an automatic fire extinguishing device; the smoke sensor is connected to the control unit or the fire warning system; the automatic fire extinguishing device is triggered by the control unit or the fire warning system to release the extinguishing agent.

[0121] In this embodiment, it should be noted that, to further enhance the safety of the large mobile power supply vehicle 100 in a high-voltage, high-energy electrical environment, a fire early warning system is installed inside the vehicle compartment 10. This fire early warning system consists of a smoke sensor and an automatic fire extinguishing device, used to achieve early detection and automatic suppression of fire hazards within the battery pack, electrical system, and the entire vehicle space.

[0122] The smoke sensors are distributed in several key locations inside the vehicle compartment 10, prioritizing coverage around the battery box 20, the power distribution module 50, and areas with concentrated cables. These areas, due to carrying high-voltage current or energy storage units, are at risk of heat accumulation and fire under long-term operation or abnormal conditions. Therefore, the smoke sensors can collect real-time information on the smoke concentration in the air.

[0123] When the smoke concentration exceeds a set threshold, the smoke sensor immediately sends a signal to the control unit or the central module of the fire warning system. The central module responds quickly, determining whether the abnormal situation triggers fire suppression conditions. If it determines that there is a fire or a potential fire source, it will issue a control command to activate the automatic fire suppression system.

[0124] The automatic fire extinguishing device is installed in the critical protected area inside the carriage 10 and can use extinguishing agents such as dry powder, aerosol, or inert gas. After receiving the activation command, the system will quickly release the extinguishing agent in the vicinity of the fire source to cover and suppress the flames and isolate oxygen in the shortest possible time, effectively blocking the path of fire spread.

[0125] To improve the system's adaptability and response efficiency, the automatic fire extinguishing device can be linked with the vehicle control unit or fire warning system for control, and supports automatic and manual dual-mode switching, which facilitates intervention by operators in special circumstances.

[0126] The technical solution implemented in this embodiment has the following technical effects:

[0127] First, it significantly improves the inherent safety of the entire vehicle system. By integrating a fire early warning system, it enables early detection and rapid response to fires in high-risk areas such as the battery compartment and high-voltage components, effectively preventing electrical fire accidents and ensuring the safety of personnel and equipment.

[0128] Secondly, it achieves intelligent fire monitoring and automatic response. The smoke sensor and control unit work together, in conjunction with the real-time response mechanism of the automatic fire extinguishing device, to complete a self-protection loop even in unattended or remote rescue scenarios, thereby improving the speed of emergency response.

[0129] Furthermore, the reliable operation capability of the mobile power supply vehicle under high temperature, long-term operation, or extreme conditions has been enhanced. Through system-level fire protection design, the risk of accidents caused by battery thermal runaway or circuit short circuits is effectively controlled, ensuring the power supply stability of the vehicle in complex outdoor environments.

[0130] Furthermore, this solution helps build a system-level operational security mechanism. Fire warning events recorded by the control unit can form an operational log, providing data support for post-incident troubleshooting and preventative maintenance, thereby improving the controllability and foresight of operations and maintenance.

[0131] In summary, this embodiment significantly enhances the safety of the large mobile power supply vehicle 100 by setting up an integrated fire early warning system, making it particularly suitable for high-risk application scenarios such as emergency power supply and field operations that require long-term stationing and high-frequency use.

[0132] In one specific embodiment, the battery housing 20 is equipped with an air-cooling system and a liquid-cooling system, wherein:

[0133] The air-cooling system uses a fan to create an airflow channel, thereby achieving forced air convection cooling of the battery pack surface;

[0134] The liquid cooling system includes a coolant circulation channel and a heat exchange structure, used for direct contact cooling or contact cooling of the battery pack.

[0135] In this embodiment, it should be noted that, in order to improve the heat dissipation capacity of the external battery pack 40 during long-term operation and ensure that it maintains good thermal stability under high-power charging and discharging conditions, the battery housing 20 is equipped with an air cooling system and a liquid cooling system to achieve efficient and graded thermal management functions.

[0136] The air-cooling system primarily utilizes multiple high-performance fans arranged within the battery housing 20, combined with an airflow guiding structure, to create a stable air convection channel. This channel forces airflow between the battery pack surface and the external environment, thereby removing heat generated during battery operation and reducing the housing temperature. The air-cooling system is suitable for heat dissipation needs under normal ambient temperatures or moderate loads, offering fast response, a simple structure, and suitability for rapid start-up and shutdown.

[0137] The liquid cooling system serves as an enhanced thermal management method, providing stronger cooling capabilities under complex operating conditions such as rapid battery temperature rise or high ambient temperatures. This system includes coolant circulation channels arranged around the battery rack 30 or battery pack, which are connected to external cooling units (such as heat exchangers and cooling pumps) to form a closed cooling cycle.

[0138] The coolant is circulated by a pump and exchanges heat with heat exchange structures (such as cooling plates and liquid-cooled base plates) arranged around the battery pack, achieving direct contact cooling or adhesive cooling of the battery pack. This method can quickly transfer heat from inside the battery cells to the cooling system, effectively suppressing local overheating and improving thermal balance and safety.

[0139] The air-cooled and liquid-cooled systems can be linked or started and stopped independently according to parameters such as system operating status, temperature level and power load, which not only ensures that the battery pack can maintain a suitable temperature in different working stages, but also optimizes the vehicle's energy consumption and heat dissipation efficiency.

[0140] The technical solution implemented in this embodiment has the following technical effects:

[0141] First, it significantly improves the thermal management performance of the battery pack. Through the coordinated design of air cooling and liquid cooling systems, the battery system can maintain temperature balance under high load, long-term or high-temperature environments, preventing safety risks such as cell overheating and thermal runaway.

[0142] Secondly, it enables dynamic switching and optimized combination of heat dissipation methods. The air-cooling system responds quickly and is suitable for rapid cooling during daily operation; the liquid-cooling system has a high cooling intensity and can cope with extreme operating conditions. The combination of the two improves the system's heat dissipation adaptability and energy efficiency ratio.

[0143] Furthermore, the reliability of the power supply vehicle is enhanced in various operating environments. Even in hot, enclosed, or long-term operating environments, the battery pack can be maintained within the ideal temperature range through active cooling, ensuring continuous power supply capability.

[0144] In addition, a good temperature control mechanism can extend the service life of the battery pack, slow down cell aging, reduce system maintenance costs, and improve the overall vehicle economy.

[0145] In summary, this embodiment integrates air-cooling and liquid-cooling systems to construct an efficient and adjustable thermal management platform, providing an important guarantee for the stable operation of the large mobile power supply vehicle 100. It is particularly suitable for heavy-duty application scenarios such as high-frequency rescue, remote power supply, and high-temperature areas.

[0146] Furthermore, the cooling system also includes a temperature sensing unit, which is used to collect temperature data of the external battery pack 40 in real time and automatically start or stop the air-cooling system or liquid-cooling system according to the set threshold, so as to realize dynamic heat dissipation management driven by temperature control.

[0147] In this embodiment, it should be noted that, to achieve real-time monitoring and dynamic response to the battery pack temperature status, the cooling system further includes a temperature sensing unit. This temperature sensing unit is located at or around a critical heat source location of the external battery pack 40, and can collect the operating temperature of the cells or battery modules in real time, feeding the collected temperature data back to the control unit.

[0148] The control unit has preset temperature control strategies and corresponding thresholds. When the temperature value collected by the temperature sensing unit exceeds the set upper limit, the control unit will automatically activate the corresponding heat dissipation device: in the medium and low temperature range, the air cooling system will be activated; in the high temperature range, the liquid cooling system will be activated first or in conjunction with the system to improve cooling efficiency. When the temperature returns to below the lower limit of the normal operating range, the control unit will shut down the heat dissipation system after a delay or switch to standby mode according to the strategy.

[0149] This temperature-driven dynamic heat dissipation management mode not only enables intelligent start-stop control of the cooling system, but also automatically adjusts the heat dissipation mode according to the actual operating heat load, avoiding energy waste or insufficient cooling caused by long-term operation of the cooling system.

[0150] The temperature sensing unit can be arranged in multiple points to monitor the temperature distribution of the entire battery rack 30 or multiple external battery packs 40. The temperature gradient data can be used to further assist in judging local anomalies or battery pack aging status, and provide support for system safety control and maintenance strategies.

[0151] The technical solution implemented in this embodiment has the following beneficial technical effects:

[0152] The introduction of temperature sensing units enables the cooling system to form a complete closed-loop control logic of "monitoring-judgment-execution", thereby improving the intelligence and accuracy of temperature control response.

[0153] To improve thermal management efficiency, the system automatically matches air cooling or liquid cooling methods to different temperature ranges, achieving optimal resource allocation. This ensures cooling performance while avoiding excessive heat dissipation that could increase energy consumption.

[0154] Enhancing system safety, real-time temperature monitoring helps to quickly detect overheating risks or abnormalities in battery pack operation, facilitating timely intervention and reducing the probability of battery thermal runaway.

[0155] Extend battery life, maintain battery operation within the ideal temperature range for extended periods, effectively slow down cell aging, and improve the overall lifespan and reliability of the battery system.

[0156] It supports predictive maintenance. The accumulation of multi-point temperature data can be used for modeling and analysis to determine heat distribution trends, providing a basis for predictive fault diagnosis and operation and maintenance.

[0157] In summary, this embodiment, by adding a temperature sensing unit and constructing a heat dissipation driving mechanism based on temperature control logic, builds an intelligent and adaptive cooling control system, further improving the operational stability and energy management level of the large mobile power supply vehicle 100 in complex application scenarios.

[0158] Optionally, the vehicle compartment 10 is also equipped with a repair tool kit, which includes basic tools and special repair tools for emergency repairs, used for maintenance or troubleshooting of the vehicle body, battery system or power connection components during outdoor operations.

[0159] In this embodiment, it should be noted that, to enhance the independent operation and maintenance capabilities of the large mobile power supply vehicle 100 in outdoor or emergency environments, a repair tool kit is also provided inside the vehicle compartment 10. The repair tool kit is individually packaged and stored in a fixed storage area inside the vehicle compartment 10, making it easy to carry and access during transport.

[0160] The repair tool kit includes a set of basic general-purpose repair tools, such as wrenches, screwdrivers, pliers, a multimeter, insulated gloves, and lighting equipment, suitable for performing basic mechanical structure repairs and electrical connection tests on-site. Additionally, based on the specialized structure of the vehicle's battery system, power distribution equipment, and 60-pin charging gun interface modules, it also includes customized repair tools, such as specialized disassembly and assembly wrenches, terminal crimping pliers, cable testing devices, and insulation resistance testers.

[0161] The toolkit may also include quick-repair materials for emergencies, such as terminal blocks, conductive tape, fuses, and cable terminations, to meet basic on-site emergency repair needs. The entire toolkit features a well-organized, categorized storage structure and is shock-resistant, waterproof, and corrosion-resistant, ensuring the tools remain intact and reliable for long-term use.

[0162] The technical solution implemented in this embodiment has the following beneficial technical effects:

[0163] Enhance the autonomy of outdoor operations by equipping vehicles with repair tool kits, enabling them to perform on-site self-inspection and troubleshooting during missions, thus reducing reliance on external technical support.

[0164] Enhanced emergency response capabilities allow for rapid on-site handling of minor system malfunctions or connectivity issues, enabling the use of equipment from the toolkit to shorten repair response time and reduce service interruptions.

[0165] To ensure continuous equipment operation, necessary emergency interventions can be performed on the battery system, electrical connections, or charging modules to ensure uninterrupted power supply.

[0166] Support maintenance personnel by providing them with standardized tools and specialized repair equipment, ensuring consistent tool support and improving operational efficiency and safety.

[0167] It adapts to complex environments in multiple scenarios, possesses the ability to independently solve problems in remote, outdoor, or technically unsupported situations, and improves the overall environmental adaptability and operational flexibility of the vehicle.

[0168] In summary, this embodiment constructs an important guarantee unit for the autonomous maintenance capability of the mobile power supply vehicle by setting up a repair tool kit, providing strong support for its reliable operation in highly uncertain scenarios such as emergency rescue, field operations, and temporary power supply.

[0169] In one alternative embodiment, the battery housing 20 is equipped with intelligent temperature control sensing system components, including highly sensitive air conditioning, air cooling and liquid cooling, and explosion-proof devices.

[0170] In this embodiment, it should be noted that the battery housing 20 integrates an intelligent temperature control sensing system. This system includes a high-sensitivity temperature sensor, an air conditioning unit, an air-cooling system, a liquid-cooling system, and an explosion-proof safety device. The temperature sensor monitors the temperature changes inside the battery pack 40 and the battery housing 20 in real time, and feeds the data back to the control unit to achieve precise temperature control. The air conditioning unit, in conjunction with the air-cooling system, forms an airflow channel through a fan to enhance air convection and quickly reduce the surface temperature of the battery. The liquid-cooling system uses a coolant circulation and heat exchange structure to provide efficient direct contact cooling of the battery pack, adapting to high loads or extreme temperature environments. The explosion-proof device, as a safety guarantee, can automatically activate in case of abnormal temperature rise or malfunction, preventing battery thermal runaway and explosion risks, and ensuring the safe operation of the entire vehicle.

[0171] The technical solution implemented in this embodiment enables dynamic temperature management of the battery pack 40, maintaining the battery within a safe and stable temperature range, and significantly improving battery life and performance stability. Multiple cooling mechanisms work together to meet heat dissipation requirements under different operating conditions and adapt to various complex environmental conditions. Simultaneously, the explosion-proof device effectively prevents safety hazards and enhances the system's safety protection capabilities. Overall, the introduction of the intelligent temperature control sensing system significantly improves the reliability and safety of the large mobile power supply vehicle, ensuring continuous and stable power supply services and meeting the needs of high-intensity operations and diverse applications.

[0172] The embodiments described above are merely illustrative of several implementations of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the scope of protection of this application. Therefore, the scope of protection of this patent application should be determined by the appended claims.

Claims

1. A large mobile power supply vehicle, characterized in that, include: car; A battery box is installed inside the vehicle compartment, and a structure for overall positioning and disassembly is provided between the battery box and the vehicle compartment; A battery rack is disposed inside the battery box, and the battery rack includes multiple mounting positions, each mounting position for detachably accommodating an external battery pack; Multiple detachable external battery packs are disposed inside the battery box, and the multiple external battery packs are electrically connected through series and / or parallel connection structures; The power distribution module, located inside the carriage, includes a power intake unit, a power discharge unit, and a charging unit. The power acquisition unit is electrically connected to the external battery pack and the built-in battery pack of the large mobile power supply vehicle, respectively, to obtain electrical energy from the external battery pack and the built-in battery pack; The discharge unit is electrically connected to an external device via a discharge gun, and supplies power to the external device. The charging unit is connected to an external power source and is electrically connected to both the external battery pack and the built-in battery pack, charging both of them.

2. The large mobile power supply vehicle according to claim 1, characterized in that, The battery rack has a multi-layer structure, and each layer is equipped with: A pull-out tray rack is used to carry an external battery pack and facilitate its installation, removal and replacement; A pair of guide rails are provided on both sides of the pallet frame, allowing the pallet frame to slide horizontally to achieve the pull-out function; A locking mechanism, installed on the pallet rack or battery rack, is used to lock the pallet rack after it slides in, preventing the external battery pack from shifting or falling off during transportation.

3. The large mobile power supply vehicle according to claim 2, characterized in that, The battery rack includes a battery rack and a second battery rack. The battery rack is disposed inside the battery housing. The second battery rack is slidably disposed in the hollow area of ​​the battery rack. The second battery rack and the battery rack are connected by a guide rail mechanism and can be pushed / pulled out from inside the battery rack along the guide rail. The battery rack and the second battery rack include multiple battery positions, each of which is used to detachably accommodate one of the external battery packs.

4. The large mobile power supply vehicle according to claim 1, characterized in that, The battery rack is equipped with battery slots of different sizes to accommodate external battery packs of different sizes and specifications.

5. The large mobile power supply vehicle according to claim 1, characterized in that, The external battery pack includes a battery pack and is equipped with a battery management system; The battery management system monitors the voltage, current, and temperature parameters of individual battery cells and sends the monitoring data to the control unit.

6. The large mobile power supply vehicle according to claim 1, characterized in that, The carriage is also equipped with a fire early warning system, which includes a smoke sensor and an automatic fire extinguishing device. The smoke sensor is connected to the control unit or the fire early warning system; The automatic fire extinguishing device is triggered by the control unit or fire early warning system to release the extinguishing agent.

7. The large mobile power supply vehicle according to claim 6, characterized in that, The battery housing is equipped with an air-cooling system and a liquid-cooling system, wherein: The air-cooling system uses a fan to create an airflow channel, thereby achieving forced air convection cooling of the battery pack surface. The liquid cooling system includes a coolant circulation channel and a heat exchange structure, used for direct contact cooling or contact cooling of the battery pack.

8. The large mobile power supply vehicle according to claim 7, characterized in that, The cooling system also includes a temperature sensing unit, which is used to collect temperature data of the external battery pack in real time and automatically start or stop the air-cooling system or liquid-cooling system according to a set threshold, so as to realize dynamic heat dissipation management driven by temperature control.

9. The large mobile power supply vehicle according to claim 1, characterized in that, The vehicle compartment is also equipped with a repair tool kit, which includes basic tools and special repair tools for emergency repairs, used for maintenance or troubleshooting of the vehicle body, battery system or power connection components during outdoor operations.

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