Towed modular mobile energy storage charging system

Abstract

The application belongs to the technical field of energy storage charging and specifically discloses a traction type modular mobile energy storage charging system. Battery packs are centrally arranged at the bottom of a cabin body, so that the gravity center is minimized and the driving and parking anti-rollover capability is enhanced. Energy storage converters and liquid cooling machines are arranged at the top of the cabin body, so that hot air backflow is avoided, the gravity center and heat dissipation layout are optimized, the stability and operation efficiency are improved, the output mode is various, the power distribution is intelligent, the direct current fast charging and alternating current power supply functions are simultaneously provided, the vehicle emergency power supply and equipment power supply requirements are considered, the modular design is convenient for installation and maintenance, the core components are provided with independent installation compartments and standardized interfaces, parallel assembly, quick replacement of faulty components and module-level product upgrading are supported, downtime is shortened, and iteration cost is reduced. The driving stability, layout rationality, output variety, lighting flexibility and maintenance convenience are optimized, and the growing market demand is met.

Description

Technical Field

[0001] This invention belongs to the field of energy storage and charging technology, and specifically discloses a traction-type modular mobile energy storage and charging system. Background Technology

[0002] With the continuous growth of new energy vehicle ownership and the increasing demand for temporary power supply in outdoor construction operations, emergency rescue and other scenarios, mobile energy storage charging equipment has been increasingly widely used as an important supplement to fixed charging facilities and fixed power grids.

[0003] Currently, existing mobile energy storage power supply equipment mainly includes the following types: (1) Truck-mounted mobile energy storage vehicle This type of equipment integrates energy storage, power conversion, and charging systems into a truck chassis, forming an integrated mobile energy storage and charging vehicle. It mainly includes a chassis, cab, cargo box and internal battery packs, a power storage converter (PCS), a DC charging station, and an auxiliary control system. During operation, the vehicle travels to the target location, uses a power take-off (PTO) to drive a generator or connect to external AC power to recharge the batteries, and then the PCS converts the DC power into the required form of electrical energy, which is then supplied to the vehicles waiting to be charged via the charging station.

[0004] This type of equipment has relatively complete functions, but its disadvantages are obvious: it requires a special truck chassis and driver, and the purchase and use of the whole vehicle has a high threshold; the vehicle has a large fuel or electricity consumption, and the operation and maintenance costs are high; moreover, most of the components are fixed and integrated, making it difficult to repair or replace a single faulty part, and the product upgrade and modification are extensive.

[0005] (2) Containerized mobile energy storage equipment These devices integrate energy storage systems within standard containers, are loaded onto trucks and transported to their destinations using hoisting equipment, and then unloaded for use, or are placed directly onto container trucks for use. Their structure mainly includes the container body, and the battery system, PCS, temperature control system, and power distribution system housed within the container.

[0006] The disadvantages of this type of equipment are: transportation and loading / unloading rely entirely on hoisting equipment, resulting in low deployment efficiency and poor site adaptability; it is difficult to deploy in the field or emergency sites where hoisting equipment is unavailable; and the equipment has a high center of gravity, posing safety hazards during transportation and hoisting.

[0007] (3) Trailer-mounted energy storage equipment These devices mount energy storage systems onto a trailer chassis and are connected to a towing vehicle via a tow bar for mobile transport. Their structure mainly consists of a trailer chassis and an energy storage compartment mounted on the chassis, housing battery packs and electrical equipment.

[0008] However, existing trailer-mounted energy storage devices still have many shortcomings: ① Insufficient driving performance of the trailer chassis. Most existing equipment chassis are only equipped with running wheels and lack a shock absorption system. Road vibrations are directly transmitted to the cabin, which can easily lead to fatigue fracture, loose electrical connections and other failures, affecting service life and reliability. At the same time, the lack of a brake linkage and driven steering system results in poor transmission of braking force and long braking distance when braking; when steering, the towing trajectory deviates greatly, making operation difficult in narrow sections of road.

[0009] ② The interior layout is unreasonable. Most of the existing equipment adopts a flat layout, with all equipment arranged on the same floor, which occupies a large area. In addition, the heavy battery pack is located in the middle or upper part of the cabin, resulting in a high center of gravity, poor driving and parking stability, and a risk of rollover.

[0010] ③ Limited output options. Most existing trailer-mounted energy storage devices are only equipped with DC charging guns or AC sockets, lacking an integrated design that can meet both needs simultaneously; even if some devices are equipped with multiple output interfaces, they lack intelligent power distribution management, and cannot reasonably allocate power according to actual needs when multiple guns are used at the same time.

[0011] ④ Lack of flexible lighting devices. Even if existing equipment is equipped with lighting functions, it is mostly fixed light poles or manually adjustable searchlights. When working outdoors at night, it is impossible to flexibly adjust the lighting angle and height according to changes in the work area, which seriously affects the efficiency and safety of night work.

[0012] ⑤ Low modularity. Most of the internal components of the existing equipment are rigidly fixed. When repairing or replacing any component, a large number of surrounding parts need to be disassembled, which is difficult and time-consuming, and is not conducive to rapid on-site maintenance and product iteration and upgrading.

[0013] In summary, existing mobile energy storage and charging equipment has significant shortcomings in terms of driving stability, layout rationality, output diversity, lighting flexibility, and maintenance convenience, making it difficult to meet the growing market demand. Summary of the Invention

[0014] To address the problems in the background art, this invention discloses a traction-type modular mobile energy storage and charging system, including a battery compartment and a traction chassis. The battery compartment features an optimized center of gravity and heat dissipation layout. The core components adopt a modular design and standardized interfaces, and the system offers diverse output methods to meet market demands.

[0015] To achieve the above-mentioned objectives, the present invention adopts the following technical solution: A traction-type modular mobile energy storage and charging system includes a battery compartment and a traction chassis. The battery compartment is fixedly mounted on the traction chassis, and the front end of the traction chassis is connected to a tractor vehicle. Under the traction of the tractor vehicle, the traction chassis can carry the battery compartment in synchronous movement. The battery compartment includes a housing and several doors hinged to the housing. When closed, the doors, together with the housing, form a closed compartment. Several battery packs are mounted on the bottom of the compartment via fixed brackets. A high-voltage box is located in the middle of the compartment. An energy storage converter and a liquid cooler are located on the top of the compartment. An AC socket and a charging pile are located at the rear of the compartment. The battery packs are connected to the corresponding terminal blocks of the high-voltage box via standardized high-voltage DC power interfaces and standardized communication interfaces. The DC bus output of the high-voltage box is connected to the input of the charging pile via a power cable. The charging pile is equipped with a charging gun for DC fast charging to replenish the vehicle's power. The energy storage converter is connected to the DC bus output of the high-voltage box via a standardized DC input terminal. The energy storage converter converts the DC power from the battery pack into AC power. The energy storage converter is connected to the AC socket via a standardized AC output terminal to output AC power externally. Each battery pack has a liquid cooling plate at its bottom. The inlet and outlet of the liquid cooling plate are connected to the corresponding interface of the liquid cooler through standardized quick connectors and liquid cooling pipes. Each battery pack has a battery management system and an energy management system inside the door. The battery management system and the energy management system, as well as the energy management system and the energy storage converter, are connected via RS485 or CAN communication. The battery management system monitors the cell temperature in real time and transmits the temperature signal to the energy management system. Based on the temperature information reported by the battery management system, the energy management system coordinates the energy storage converter to adjust the charging and discharging power when the temperature is too high, thereby achieving system-level coordinated thermal management. A lighting device is installed on the top of the battery compartment.

[0016] Furthermore, the traction modular mobile energy storage and charging system includes a traction chassis comprising a frame, a tow bar, a shock absorption system, and a hydraulic braking system. The frame is used to carry the battery compartment. The front end of the frame is connected to one end of the tow bar via a rotating pivot. The other end of the tow bar is equipped with a tow hook for connecting to the towing vehicle. The vehicle is equipped with four wheels at the bottom corners of the frame. The shock absorption system is located between the frame and the wheels to reduce the vibration energy transmitted to the battery compartment. The front wheels are linked to the tow bar through the steering tie rod assembly. When the towing vehicle turns, the angle change of the tow bar is transmitted to the front wheel axle through the steering tie rod assembly, causing the front wheels to turn accordingly. The hydraulic braking system is located at the traveling wheel and includes a brake, hydraulic lines, and a hydraulic brake. The hydraulic brake is used to push the brake to clamp the brake disc or brake drum to achieve braking. The hydraulic brake is linked to the tractor's brake hydraulic system through hydraulic lines that are internal or external to the drawbar.

[0017] Furthermore, the traction-type modular mobile energy storage and charging system includes a lighting device comprising a lamp head, a lifting mechanism, and a rotating mechanism. The lifting mechanism employs an electric push rod, and the rotating mechanism employs a stepper motor-driven rotary device. The rotary device includes a rotary base and a rotary head. Wireless signal receiving modules are respectively installed in the rotary base and the electric push rod. The fixed end of the electric push rod is hinged to the top of the cabin via a flipping unit, and the movable end of the electric push rod is connected to the rotary base. Under the action of the flipping unit, the electric push rod can rotate 90 degrees relative to the cabin. A rotary head is rotatably connected to the rotary base, and the rotary head is used to install the lamp head. Under the action of the rotary device, it can achieve continuous 360° horizontal rotation, allowing the light to point in any direction.

[0018] Furthermore, the traction-type modular mobile energy storage and charging system also includes an electrical box in the middle of the cabin. Located between the AC side of the energy storage converter and the power grid, the electrical box provides safety isolation, overload lightning protection, legal metering, and auxiliary power distribution. Through isolating switches and circuit breakers, the electrical box provides a visible physical disconnect, ensuring maintenance safety that cannot be replaced by the electronic switches within the energy storage converter. Built-in fuses and surge protectors form the last line of defense against lightning strikes and overload failures. The high-precision bidirectional energy meter serves as the legal basis for grid settlement, determining the actual revenue from peak-valley arbitrage. Simultaneously, it provides power distribution for auxiliary equipment such as cabin lighting and the battery management system.

[0019] Furthermore, in the traction modular mobile energy storage and charging system, the steering tie rod assembly includes a steering rod and a tie rod. The front end of the steering rod is hinged to the end of the tie rod via a horizontally set pivot. The tie rod can adjust its angle by tilting up and down relative to the steering rod. The middle part of the steering rod is rotatably connected to the bottom of the vehicle frame via a vertically set pin. The rear end of the steering rod is hinged to one end of each of the two sets of tie rods. The other end of the tie rod is hinged to the corresponding front wheel axle. The steering rod can rotate left and right relative to the vehicle frame to achieve steering, and the tie rod drives the front wheel to steer.

[0020] Furthermore, the traction modular mobile energy storage charging system has a charging pile equipped with dual charging guns, which supports both single and dual gun working modes. The charging pile has a built-in intelligent power distribution module that detects the connection status of the two guns in real time and distributes power according to the connection status.

[0021] Furthermore, the traction modular mobile energy storage and charging system has parking support feet hinged to the front and rear ends of both sides of the vehicle frame. When in motion, the parking support feet are retracted and attached to the bottom sides of the vehicle frame. When parked, the parking support feet extend downwards to contact the ground and distribute the weight of the system to the ground, preventing the equipment from moving or tipping over due to external forces when parked.

[0022] Compared with the prior art, the beneficial effects of the present invention are: This invention relates to a traction-type modular mobile energy storage and charging system. The traction chassis and battery compartment are designed separately, which reduces the purchase and use costs and allows for flexible and efficient deployment. The tow bar and traction chassis are connected by a rotating pivot to ensure that the following vehicle automatically follows, with good trajectory consistency and excellent maneuverability in narrow sections. The hydraulic brake is linked with the traction vehicle to ensure braking safety, improve the convenience and safety of mobile transportation, and the shock absorption system effectively attenuates road vibration, prevents structural loosening, and extends the equipment life. This invention relates to a traction-type modular mobile energy storage and charging system, which optimizes the center of gravity and heat dissipation layout, improves stability and operating efficiency. The four battery packs are centrally arranged at the bottom of the cabin to minimize the center of gravity and enhance the anti-rollover capability during driving and parking. It is especially suitable for uneven roads and sloping scenarios. The energy storage converter and liquid cooler are placed at the top of the cabin to avoid hot air backflow. This invention is a traction-type modular mobile energy storage and charging system with diverse output modes and intelligent power distribution. It also features DC fast charging and AC power supply functions, catering to both emergency vehicle charging and equipment power supply needs. The dual-gun DC charging pile has a built-in intelligent power distribution module that can automatically switch between single-gun 120KW full power and dual-gun 60KW modes. The AC socket is equipped with multiple interfaces to adapt to industrial and household scenarios. This invention is a traction-type modular mobile energy storage and charging system with flexible lighting, suitable for outdoor operations. The top lighting device supports wireless remote control lifting and 360° rotation, eliminating the need for climbing operations. The lighting direction and height can be flexibly adjusted according to changes in the work area, improving the efficiency and safety of nighttime operations. This invention relates to a traction-type modular mobile energy storage and charging system. Its modular design facilitates installation and maintenance. Core components are equipped with independent installation compartments and standardized interfaces, supporting parallel assembly, rapid replacement of faulty components, and module-level product upgrades, thus reducing downtime and iteration costs. The battery compartment is constructed of high-strength steel and has undergone vibration simulation verification to ensure structural reliability. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of the present invention 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 the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a side view of the traction modular mobile energy storage and charging system of the present invention with the hatch open. Figure 2 This is a rear view structural diagram of the traction modular mobile energy storage and charging system of the present invention with the hatch open. Figure 3This is a three-dimensional structural diagram of the traction modular mobile energy storage and charging system of the present invention with the hatch open. Figure 4 This is a bottom view of the structure of the traction modular mobile energy storage and charging system of the present invention with the hatch open. In the above diagram: 1-Traction chassis; 2-First battery pack; 3-Second battery pack; 4-High voltage box; 5-Energy storage converter; 6-Electrical box; 7-Liquid chiller; 8-Energy management system; 9-Third battery pack; 10-Fourth battery pack; 11-Hydraulic brake system; 12-Parking support feet; 13-AC socket; 14-Charging gun; 15-Lighting device; 15.1-Lamp head; 15.2-Rotating mechanism; 15.3-Lifting mechanism; 16-Charging pile; 17-Box body; 18-Tether rod; 19-Steering rod; 20-Tie rod; 21-Front wheel; 22-Rear wheel. Detailed Implementation

[0025] To better understand the present invention, the following embodiments further illustrate the content of the invention, but the scope of protection of the present invention is not limited to the following embodiments. Numerous specific details are set forth in the following description to provide a more thorough understanding of the invention. However, it will be apparent to those skilled in the art that the present invention can be practiced without one or more of these details.

[0026] In the description of this invention, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0027] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0028] In the description of this embodiment, the terms "upper," "lower," "left," and "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention. In addition, the terms "first" and "second" are used only for distinction in description and have no special meaning.

[0029] Combined with appendix Figure 1-4 This invention details a traction-type modular mobile energy storage and charging system with a total capacity of 105 kW / 241 kWh. The system includes a battery compartment and a traction chassis 1. The battery compartment is fixedly mounted on the traction chassis 1, and the front end of the traction chassis 1 is connected to a tractor. Under the traction of the tractor, the traction chassis 1 can carry the battery compartment in synchronous movement, enabling the mobile transportation of the entire system. The battery compartment includes a housing 17 and several doors hinged to the housing 17. When closed, the doors, together with the housing 17, form a closed compartment. The battery compartment adopts a high-strength steel frame structure, welded and formed, with independent installation compartments inside. Each compartment is equipped with a corresponding installation base and fixing bracket. All components and connection structures have been verified by mechanical simulation and random vibration analysis to meet the vibration resistance requirements during transportation and use. Several battery packs are installed at the bottom of the compartment via fixing brackets. Preferably, four 1P60S-314Ah battery packs are fixed at the bottom of the compartment via fixing bracket bolts, namely the first battery pack 2, the second battery pack 3, the third battery pack 9, and the fourth battery pack 10. The interface of each battery pack adopts a plug-in quick-connect structure, which can be independently disassembled and replaced. The bottom layout of the battery packs significantly lowers the system's center of gravity and improves driving and parking stability. A high-voltage box 4 is located in the middle of the compartment, which provides circuit protection. A 105KW energy storage converter PCS is installed at the top of the compartment. 5 and liquid cooler 7, hot air is directly discharged to the outside to avoid backflow and accumulation, forming an efficient upward heat dissipation channel to improve heat dissipation efficiency. An AC socket 13 and a 120KW charging pile 16 are set at the rear of the cabin. The battery pack is connected to the corresponding interface terminal block of the high voltage box 4 through a standardized high voltage DC power interface and a standardized communication interface. The DC bus output end of the high voltage box 4 is connected to the input end of the charging pile 16 through a power cable. The charging pile 16 is equipped with a charging gun 14 for DC fast charging to replenish the vehicle. The PCS is connected to the DC bus output end of the high voltage box 4 through a standardized DC input end. The PCS converts the DC power of the battery pack into AC power. The PCS is connected to the AC socket 13 through a standardized AC output end to output AC power. The interfaces between each component are all detachable standard interfaces. When any component needs to be repaired or replaced, only the corresponding interface connection needs to be disconnected and the fixing bolts need to be removed to remove the component independently without disassembling other components. The system is configured with two output methods: The first method: Fast charging of vehicles is achieved by outputting DC power through a 120KW charging pile. The charging pile is fixed at the rear of the battery compartment, and the input end is connected to the DC bus of the high-voltage box through a power cable. The charging pile is equipped with dual charging guns and has a built-in intelligent power distribution module that monitors the connection status of the two guns in real time. When a single gun is used, the module distributes all 120KW power to that gun to achieve full power output. When both guns are used at the same time, the module distributes the 120KW evenly, with each gun outputting 60KW, so that both guns can charge at the same time. The second method: 400V AC input and output through a three-phase AC socket: The AC socket is connected to the PCS AC output terminal through a power cable and is equipped with multiple output interfaces, including industrial sockets and household AC sockets, which are suitable for industrial and household scenarios. The socket can be used as an output interface to supply power to the outside, or as an input interface to connect to the mains power to charge the battery system. Each battery pack has a liquid cooling plate at its bottom. The inlet and outlet of the liquid cooling plate are connected to the corresponding interface of the liquid cooler 7 via standardized quick-connect connectors and liquid cooling pipelines. The liquid cooling pipelines are flexible hoses with quick-connect plugs at both ends for quick insertion and removal. Each battery pack is equipped with a battery management system (BMS), and an energy management system (EMS) 8 is located inside the door. The BMS and EMS 8, as well as the EMS 8 and the power storage converter (PCS) 5, are connected via RS485 or CAN communication. The BMS monitors the cell temperature in real time and transmits the temperature signal to the EMS 8. Based on the temperature information reported by the BMS, the EMS coordinates with the PCS to adjust the charging and discharging power when the temperature is too high, achieving system-level collaborative thermal management. A lighting device 15 is installed on the top of the battery compartment.

[0030] As an optional design, the preferred traction modular mobile energy storage and charging system includes a traction chassis 1 comprising a frame, a tow bar 18, a shock absorption system, and a hydraulic braking system 11. The frame is used to carry the battery compartment. The front end of the frame is connected to one end of the tow bar 18 via a rotating pivot. The other end of the tow bar 18 is equipped with a tow hook for connecting to the towing vehicle. The tow bar 18 can swing in the horizontal and vertical directions to adapt to changes in pitch and steering angles. Four wheels are installed at the bottom corners of the frame. A shock absorption system is located between the frame and the wheels to reduce the vibration energy transmitted to the battery compartment and protect the internal electrical equipment. The wheels include front wheels 21 located on the left and right sides of the front end of the frame bottom and rear wheels 22 located on the left and right sides of the rear end of the frame bottom. The front wheels 21 have a steering function. The front wheels 21 are linked to the tow bar 18 through the steering tie rod assembly. When the towing vehicle turns, the angle change of the tow bar 18 is transmitted to the front wheel axle through the steering tie rod assembly, which drives the front wheels 21 to follow the deflection, so that the towing chassis turns synchronously along the trajectory of the towing vehicle, reducing the turning radius and trajectory deviation, and improving driving safety. The hydraulic braking system 11 is located at the traveling wheel and includes a brake, hydraulic lines, and a hydraulic brake. The hydraulic brake is used to push the brake to clamp the brake disc or brake drum to achieve braking. The hydraulic brake is linked with the tractor's brake hydraulic system through the hydraulic lines inside or outside the traction rod 18. When the tractor brakes, the brake fluid pressure is transmitted to the hydraulic brake through the hydraulic lines, pushing the brake to clamp the brake disc or brake drum to achieve synchronous braking.

[0031] As an optional design, the preferred traction-type modular mobile energy storage and charging system includes a lighting device 15 comprising a lamp head 15.1, a lifting mechanism 15.3, and a rotating mechanism 15.2. The lifting mechanism 15.3 uses an electric push rod, and the rotating mechanism 15.2 uses a stepper motor-driven rotary device. The rotary device includes a rotary base and a rotary head. Wireless signal receiving modules are respectively installed in the rotary base and the electric push rod, controlling the lifting action of the electric push rod and the rotation action of the rotary base via a remote control. The fixed end of the electric push rod is hinged to the top of the cabin via a flipping unit, and the movable end of the electric push rod is connected to the rotary base. The flipping unit... The electric push rod can rotate 90 degrees relative to the cabin. In the non-use state, the electric push rod is placed horizontally parallel to the cabin. In the use state, the electric push rod is rotated 90 degrees relative to the cabin and set perpendicular to the cabin. A rotary head is rotatably connected to the rotary base. The rotary head is used to install the lamp head 15.1. The lamp head uses an LED light source, which has the characteristics of high brightness and low power consumption, meeting the lighting needs of outdoor operation scenarios. Under the action of the rotary device, it can achieve 360° continuous horizontal rotation so that the light can be pointed in any direction. It should be noted that the flip unit, electric push rod and rotary base are all existing technologies, so their structures will not be described in detail.

[0032] As an optional design, the preferred traction-type modular mobile energy storage and charging system includes an electrical box 6 located in the middle of the cabin. This electrical box manages power distribution and is situated between the PCS AC side and the power grid. It performs four main functions: safety isolation, overload lightning protection, legal metering, and auxiliary power distribution. The electrical box 6 provides visible physical disconnections via isolating switches and circuit breakers, ensuring maintenance safety that cannot be replaced by electronic switches within the PCS. The electrical box 6 also incorporates fuses and surge protectors (SPDs) to form the last line of defense against lightning strikes and overload failures. The high-precision bidirectional energy meter mounted on the electrical box 6 serves as the legal basis for grid settlement, determining the actual revenue from peak-valley arbitrage. The electrical box 6 also provides power distribution for cabin lighting, BMS, and other auxiliary equipment.

[0033] As an optional design, the preferred traction modular mobile energy storage and charging system includes a steering rod assembly comprising a steering rod 19 and two sets of tie rods 20. Each set of tie rods 20 includes two articulated connecting rods. The front end of the steering rod 19 is articulated to the end of the traction rod 18 via a horizontally arranged pivot. The traction rod 18 can adjust its angle relative to the steering rod 19 by pitch. The middle part of the steering rod 19 is rotatably connected to the bottom of the frame via a vertically arranged pin. The steering rod 19 can rotate left and right relative to the frame to achieve steering. One end of each of the two sets of two-stage connecting rods is articulated to the rear end of the steering rod 19, and the other end of each set of two-stage connecting rods is articulated to the corresponding front wheel 21 axle. When the steering rod 19 turns left or right, it drives the front wheel 21 to turn via the tie rods 20.

[0034] As an optional design, the preferred traction modular mobile energy storage charging system has a charging pile 16 equipped with dual charging guns 14. The charging pile 16 supports both single and dual gun working modes. The charging pile 16 has a built-in intelligent power distribution module, which detects the connection status of the two guns in real time and distributes power according to the connection status.

[0035] As an optional design, the preferred traction modular mobile energy storage and charging system has parking support feet 12 hinged to the front and rear ends of both sides of the frame. When in motion, the parking support feet 12 are retracted and attached to the bottom sides of the frame. When parked, the parking support feet 12 extend downwards to contact the ground and distribute the system weight to the ground, preventing the equipment from moving or tipping over due to external forces. It should be noted that the connection structure between the parking support feet 12 and the frame bracket adopts existing technology, which can realize the retraction and extension of the parking support feet 12.

[0036] The working process of this invention is as follows: This invention relates to a traction-type modular mobile energy storage and charging system, which is suitable for scenarios such as emergency power replenishment for new energy vehicles, power supply for outdoor construction operations, power supply at emergency rescue sites, and temporary power supply in areas without grid coverage. When the system is working, the first battery pack 2, the second battery pack 3, the third battery pack 9, and the fourth battery pack 10 are connected to the high-voltage box 4 via cables. The high-voltage box 4 is then connected to the PCS 5, which converts the DC power of the battery packs into AC power and outputs the AC power to the outside through the three-phase AC 400V output socket 13. At the same time, the charging pile 16 is directly connected to the DC bus of the high-voltage box 4 and achieves 120KW DC fast charging through the charging gun 14 to replenish the vehicle's power. The charging pile 16 supports two working modes: single gun operation with full power output of 120KW, and dual gun operation with each gun distributing an average of 60KW of power. In terms of temperature control management, when the battery pack temperature rises during charging and discharging, the BMS monitors the cell temperature in real time and transmits the temperature signal to the liquid cooler 7. The liquid cooler 7 then activates circulating liquid cooling to cool the battery pack, ensuring that the battery operates within a safe temperature range and preventing overheating damage or safety accidents. Simultaneously, the EMS 8, based on the temperature information reported by the BMS, coordinates with the PCS 5 to adjust the charging and discharging power when the temperature is too high, achieving system-level collaborative thermal management. During nighttime operations, the lighting device 15 is controlled by a remote control to provide 360° illumination. When the tractor brakes, its braking force is transmitted to the rear vehicle via linkage, triggering the hydraulic braking system 11 to work, achieving rapid braking and ensuring safety. When the system is parked, the parking support feet 12 extend downwards to support the ground, distributing the system weight to the ground and preventing the equipment from moving due to external forces while parked.

[0037] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Any other modifications or equivalent substitutions made by those skilled in the art to the technical solutions of the present invention, as long as they do not depart from the spirit and scope of the technical solutions of the present invention, should be covered within the scope of the claims of the present invention.

Claims

1. A traction-type modular mobile energy storage and charging system, characterized in that: It includes a battery compartment and a towing chassis. The battery compartment is fixedly mounted on the towing chassis, and the front end of the towing chassis is connected to the tractor. Under the traction of the tractor, the towing chassis can carry the battery compartment and move synchronously. The battery compartment includes a housing and several doors hinged to the housing. When closed, the doors, together with the housing, form a closed compartment. Several battery packs are mounted on the bottom of the compartment via fixed brackets. A high-voltage box is located in the middle of the compartment. An energy storage converter and a liquid cooler are located on the top of the compartment. An AC socket and a charging pile are located at the rear of the compartment. The battery packs are connected to the corresponding terminal blocks of the high-voltage box via standardized high-voltage DC power interfaces and standardized communication interfaces. The DC bus output of the high-voltage box is connected to the input of the charging pile via a power cable. The charging pile is equipped with a charging gun for DC fast charging to replenish the vehicle's power. The energy storage converter is connected to the DC bus output of the high-voltage box via a standardized DC input terminal. The energy storage converter converts the DC power from the battery pack into AC power. The energy storage converter is connected to the AC socket via a standardized AC output terminal to output AC power externally. Each battery pack has a liquid cooling plate at its bottom. The inlet and outlet of the liquid cooling plate are connected to the corresponding interface of the liquid cooler through standardized quick connectors and liquid cooling pipes. Each battery pack has a battery management system and an energy management system inside the door. The battery management system and the energy management system, as well as the energy management system and the energy storage converter, are connected via RS485 or CAN communication. The battery management system monitors the cell temperature in real time and transmits the temperature signal to the energy management system. Based on the temperature information reported by the battery management system, the energy management system coordinates the energy storage converter to adjust the charging and discharging power when the temperature is too high, thereby achieving system-level coordinated thermal management. A lighting device is installed on the top of the battery compartment.

2. The traction modular mobile energy storage and charging system according to claim 1, characterized in that: The traction chassis includes a frame, drawbar, shock absorption system, and hydraulic braking system. The frame is used to carry the battery compartment. The front end of the frame is connected to one end of the tow bar via a rotating pivot. The other end of the tow bar is equipped with a tow hook for connecting to the towing vehicle. The vehicle is equipped with four wheels at the bottom corners of the frame. The shock absorption system is located between the frame and the wheels to reduce the vibration energy transmitted to the battery compartment. The front wheels are linked to the tow bar through the steering tie rod assembly. When the towing vehicle turns, the angle change of the tow bar is transmitted to the front wheel axle through the steering tie rod assembly, causing the front wheels to turn accordingly. The hydraulic braking system is located at the traveling wheel and includes a brake, hydraulic lines, and a hydraulic brake. The hydraulic brake is used to push the brake to clamp the brake disc or brake drum to achieve braking. The hydraulic brake is linked to the tractor's brake hydraulic system through hydraulic lines that are internal or external to the drawbar.

3. The traction modular mobile energy storage and charging system according to claim 2, characterized in that: The lighting device includes a lamp head, a lifting mechanism, and a rotating mechanism. The lifting mechanism uses an electric push rod, and the rotating mechanism uses a stepper motor-driven rotary device. The rotary device includes a rotary base and a rotary head. Wireless signal receiving modules are installed in the rotary base and the electric push rod, respectively. The fixed end of the electric push rod is hinged to the top of the cabin through a flip unit, and the movable end of the electric push rod is connected to the rotary base. Under the action of the flip unit, the electric push rod can rotate 90 degrees relative to the cabin. The rotary head is rotatably connected to the rotary base and is used to install the lamp head. Under the action of the rotary device, it can achieve 360° continuous horizontal rotation so that the light can be pointed in any direction.

4. The traction modular mobile energy storage and charging system according to claim 3, characterized in that: An electrical box is also located in the middle of the cabin. The electrical box is located between the AC side of the energy storage converter and the power grid, and is responsible for safety isolation, overload lightning protection, legal metering and auxiliary power distribution.

5. The traction modular mobile energy storage and charging system according to claim 3, characterized in that: The steering tie rod assembly includes a steering rod and tie rods. The front end of the steering rod is hinged to the end of the drawbar via a horizontally set pivot. The drawbar can adjust its angle by tilting up and down relative to the steering rod. The middle part of the steering rod is rotatably connected to the bottom of the frame via a vertically set pin. The steering rod can rotate left and right relative to the frame to achieve steering. The rear end of the steering rod is hinged to one end of each of the two sets of tie rods. The other end of the tie rod is hinged to the corresponding front wheel axle. When the steering rod turns left or right, it drives the front wheels to steer through the tie rods.

6. The traction modular mobile energy storage and charging system according to claim 3, characterized in that: The charging station is equipped with dual charging guns and supports both single and dual gun working modes. The charging station has a built-in intelligent power distribution module that detects the connection status of the two guns in real time and distributes power according to the connection status.

7. The traction modular mobile energy storage and charging system according to claim 3, characterized in that: Parking support feet are hinged to the front and rear ends on both sides of the frame. When the vehicle is in motion, the parking support feet are retracted and attached to the bottom sides of the frame. When the vehicle is parked, the parking support feet extend downwards to contact the ground and distribute the weight of the system to the ground, preventing the equipment from moving or tipping over due to external forces when parked.

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