Compact charging trolley body

Abstract

The application belongs to the technical field of mobile charging equipment and relates to a compact charging vehicle body. The vehicle body comprises a frame body integrally welded and formed, which is internally provided with first-layer, second-layer and third-layer battery placing frame structures stacked in sequence from top to bottom. The bottom center of the third-layer battery placing frame structure is provided with a water-cooled cabinet storage frame structure for installing a water-cooling module to realize efficient heat dissipation. The frame body is provided on one side with an integrated energy conversion module placing frame structure for installing functional units. The bottom of the frame body is provided on both sides with fixing frames, and the frame body is connected with a foot pedal structure through a Z-shaped foot pedal connecting frame. The application solves the problems of large size and inconvenient movement of the existing mobile charging vehicle through a multi-layer stacking layout, modular integration and integrated welding structure, has the advantages of compact structure, light self-weight, good heat dissipation performance, convenient operation and maintenance and the like, and significantly improves the space utilization and environmental adaptability.

Description

Technical Field

[0001] This invention belongs to the field of mobile charging equipment technology, and in particular relates to a compact charging vehicle body. Background Technology

[0002] With the increasing popularity of electric vehicles, the demand for mobile charging is growing. Currently, most mobile charging vehicles on the market use large-capacity battery packs, resulting in large vehicle size and excessive weight, making it difficult to move flexibly in narrow or obstacle-filled areas.

[0003] Existing charging vehicles have a loose structure and numerous connectors, which not only occupy a lot of space but also increase manufacturing costs and energy consumption. The batteries are mostly stacked flat, resulting in low space utilization and an inability to accommodate a sufficient number of battery cells within the limited vehicle body, thus limiting its range and service coverage. Therefore, there is an urgent need for a charging vehicle body design that is compact, has a rational spatial layout, and is easy to move and operate, in order to improve its applicability and economy. Summary of the Invention

[0004] To address the problems of complex structure, large size, low heat dissipation efficiency, low space utilization, and low battery charging efficiency in existing charging vehicles, this invention proposes a compact charging vehicle body, comprising: a frame body, wherein the frame body has three battery placement frame structures inside, namely a first battery placement frame structure, a second battery placement frame structure, and a third battery placement frame structure, which are stacked sequentially from top to bottom; the bottom of the third battery placement frame structure is provided with a water-cooled cabinet storage frame structure for installing a water-cooling module; One side of the vehicle frame is provided with an energy conversion module placement frame structure from top to bottom; the energy conversion module placement frame structure includes several quick-release frame connecting strips arranged horizontally and vertically; the bottom two sides of the third battery placement frame structure are provided with fixing frames; one of the fixing frames is provided with a foot pedal connecting frame at the front end for connecting the foot pedal structure; the vehicle frame is an integrally welded structure, and friction strips are provided on the first, second, and third battery placement frame structures to reduce frictional resistance during battery installation.

[0005] According to the above-described compact charging vehicle body, the first layer battery placement frame structure, the second layer battery placement frame structure, and the third layer battery placement frame structure are all provided with guide grooves. The guide grooves match the shape of the battery module, which facilitates the insertion and positioning of the battery module, and further improves the installation efficiency and structural stability.

[0006] According to the above-described compact charging vehicle body, the water-cooled cabinet storage frame structure is located at the bottom center of the third-layer battery placement frame structure. The bottom-mounted water-cooling structure achieves efficient heat dissipation of the battery, avoiding overheating problems caused by stacking.

[0007] According to the above-described compact charging vehicle body, the energy conversion module placement frame structure includes, from top to bottom, a coolant inlet module placement frame structure, a first voltage conversion module placement frame structure, a charging power conversion module placement frame structure, a second voltage conversion module placement frame structure, and a battery power output module placement frame structure; the modules are connected by built-in cable trays, and the cables are neatly laid out to avoid exposed wear.

[0008] According to the above-described compact charging vehicle body, the foot pedal connecting frame has a Z-shaped structure; one end of the foot pedal connecting frame is connected to the outer edge of the fixed frame, and the bottom of the other end is flush with the bottom of the water-cooled cabinet storage frame structure.

[0009] According to the above-described compact charging vehicle body, the friction strip is made of polymer material and is attached to the bottom of each battery to reduce the coefficient of friction when the battery is pushed in.

[0010] According to the above-described compact charging vehicle body, the frame is integrally welded from high-strength lightweight alloy material, and its outer surface is coated with an anti-corrosion coating to enhance durability and environmental adaptability.

[0011] According to the above-described compact charging vehicle body, the top of the vehicle frame is provided with a lifting interface for use with lifting equipment for overall handling and deployment.

[0012] According to the above-described compact charging vehicle body, the energy conversion module placement frame structure has several quick-release frame connecting strips arranged laterally and longitudinally with several mounting holes.

[0013] According to the above-described compact charging vehicle body, an inspection port is provided below the third-layer battery placement frame structure. The inspection port is equipped with a removable cover to facilitate maintenance of the bottom battery and water-cooling module.

[0014] The beneficial effects of this invention are as follows: 1. Improved space utilization and significantly enhanced vehicle compactness. The longitudinal arrangement of the three-layer stacked battery placement frame structure significantly improves space utilization compared to the traditional flat layout. Each battery placement frame structure employs precise dimensions to ensure more battery cells are accommodated within the limited vehicle body space. Compared to existing technologies, it can accommodate 30% more battery capacity in the same volume, enabling the charging vehicle to move and operate flexibly in confined environments, making it particularly suitable for limited spaces such as older residential areas and underground parking lots.

[0015] 2. Improved heat dissipation efficiency and extended battery life. The water-cooled cabinet storage frame structure is located at the bottom center of the third-layer battery placement frame structure, utilizing the thermodynamic chimney effect to create a natural convection heat dissipation channel. This keeps the battery pack's operating temperature stable within the optimal range, reducing it by 15-20°C compared to traditional air-cooling systems. This structure significantly extends battery cycle life, reduces capacity decay, and greatly improves economic efficiency.

[0016] 3. Enhanced structural strength and reduced weight. The frame structure, constructed using a one-piece welded steel construction with rectangular longitudinal beams and square transverse beams, improves the bending and torsional strength of the chassis. This results in reduced weight compared to traditional steel structures, while maintaining increased strength. A triangular stabilizing structure design between the fixed frame and the Z-shaped footrest connection ensures structural safety under maximum load.

[0017] 4. Improved module installation efficiency and reduced maintenance time. The energy conversion module placement frame structure adopts a steel quick-release connector design, combined with standardized mounting holes, reducing module installation time compared to traditional bolt connections. The inspection port uses a quick-release bolt design, combined with a large opening size, reducing bottom-level maintenance time. The built-in cable tray partition structure reduces cable laying time and improves troubleshooting efficiency.

[0018] 5. Improved charging efficiency of the battery pack and reduced energy consumption. Through optimized layout of the energy conversion module frame structure, from top to bottom, the modules are arranged as follows: coolant inlet module, voltage conversion module, power conversion module, and output module. This shortens cable length and reduces line impedance. Energy consumption for fully charging the battery pack is reduced, resulting in significant energy savings. Simultaneously, the anti-corrosion coating on the vehicle frame extends its service life. Attached Figure Description

[0019] Figure 1 This is a structural schematic diagram of a compact charging vehicle body according to the present invention.

[0020] Figure 2 This is a schematic diagram showing the installation positions of various modules in a compact charging vehicle body according to the present invention.

[0021] In the diagram: 10-Frame, 11-First-layer battery placement frame structure, 12-Second-layer battery placement frame structure, 13-Third-layer battery placement frame structure, 14-Water-cooled cabinet storage frame structure, 15-Energy conversion module placement frame structure, 151-Coolant filling module placement frame structure, 152-First voltage conversion module placement frame structure, 153-Charging power conversion module placement frame structure, 154-Second voltage conversion module placement frame structure, 155-Battery power output module placement frame structure, 156-Built-in cable tray, 16-Foot pedal connection bracket, 18-Friction strip, 19-Guide groove, 20-Fixing bracket, 21-Lifting interface, 22-Inspection port. Detailed Implementation

[0022] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0023] like Figure 1 , Figure 2 As shown: This embodiment presents a compact charging vehicle body, including a frame 10. The frame 10 is made of high-strength aluminum alloy through an integral welding process. The frame 10 consists of multiple longitudinal beams and cross beams. The longitudinal beams are made of rectangular tubing, and the cross beams are made of square tubing. Robotic welding technology ensures the consistency and reliability of the welding quality.

[0024] The vehicle frame 10 has a three-layer battery placement frame structure inside, which, from top to bottom, are the first battery placement frame structure 11, the second battery placement frame structure 12, and the third battery placement frame structure 13. Each battery placement frame structure can accommodate a standard-sized lithium iron phosphate battery module.

[0025] Each battery placement frame structure has a friction strip 18 made of ultra-high molecular weight polyethylene attached to the contact area with the battery. The friction strip 18 reduces the coefficient of friction when the battery is pushed in from 0.3 to 0.1, effectively reducing frictional resistance during battery installation and protecting the battery casing.

[0026] A water-cooled cabinet storage frame structure 14 is located at the bottom center of the third-layer battery placement frame structure 13 for installing water-cooling modules. The length of the water-cooled cabinet storage frame structure 14 is less than that of the third-layer battery placement frame structure 13, and space is left on both sides for the formation of heat dissipation air ducts.

[0027] The water-cooled cabinet's storage frame structure 14 adopts a square tube welded frame with internal reinforcing ribs, providing a load-bearing capacity of up to 500kg. The frame's interior includes pre-installed water pipe channels and cable routing channels to ensure a neat and orderly arrangement of the water-cooling system's piping. The water-cooling structure utilizes plate heat exchangers, coupled with two 200mm diameter cooling fans, providing a maximum cooling capacity of 5kW.

[0028] One side of the frame 10 has an energy conversion module placement frame structure 15 arranged from top to bottom, which includes several quick-release frame connecting strips arranged laterally and longitudinally. The quick-release frame connecting strips are made of aluminum profiles and have standardized M8 mounting holes with a hole spacing of 50mm, which can accommodate modules of various shapes.

[0029] The energy conversion module placement frame structure 15 specifically includes five functional module installation positions arranged from top to bottom: The frame structure includes: coolant filling module (151), first voltage conversion module (152), charging power conversion module (153), second voltage conversion module (154), and battery power output module (155). The modules are connected by built-in cable trays 156, which are made of 1.5mm thick galvanized steel plate and have internal partitions to separate power cables and control cables, ensuring neat cable layout and avoiding exposed wear.

[0030] The bottom two sides of the third-layer battery placement frame structure 13 are provided with fixing brackets 20. The fixing brackets 20 are made of square tubes and are connected to the main structure through triangular reinforcing plates, with a load-bearing capacity of up to 500 kg.

[0031] One of the fixed frames 20 has a foot pedal connecting frame 16 at its front end. The foot pedal connecting frame 16 has a Z-shaped structure and is made of 8mm thick Q345 steel plate. One end of the foot pedal connecting frame 16 is connected to the outer end of the fixed frame 20 by M12 high-strength bolts, and the bottom of the other end is flush with the bottom of the water-cooled cabinet storage frame structure 14, which is used to connect the rotatable foot pedal structure.

[0032] The pedal structure is made of stainless steel tubing and covered with a steel checkered plate. The pedal structure is connected to the pedal connecting frame 16 via a hinge mechanism and can be stored in a special groove on the side of the frame 10, with a load-bearing capacity of 150kg.

[0033] The top of the chassis 10 is equipped with four lifting interfaces 21. The lifting interfaces 21 adopt the eye bolts of GB / T825-1988 standard, with a rated load of 3000kg. The four lifting interfaces 21 are located at the four corners of the chassis, forming a stable distribution of lifting points to ensure balance during the lifting process.

[0034] Below the third-layer battery placement frame structure 13 are two access ports 22, each equipped with a multi-functional removable cover. The cover is made of 2mm thick stainless steel and has silicone sealing strips around its edges, achieving an IP54 waterproof rating. The cover is secured with quick-release bolts, allowing for disassembly in less than 2 minutes, facilitating routine maintenance and troubleshooting of the water-cooling module.

[0035] All exposed surfaces of the chassis 10 are sandblasted to remove rust, and then a three-layer anti-corrosion coating system consisting of epoxy zinc-rich primer, epoxy micaceous iron oxide intermediate coat, and polyurethane topcoat is applied. The total coating thickness reaches 250μm, and the salt spray test time exceeds 1000 hours, ensuring corrosion resistance in harsh environments.

[0036] The battery storage area is equipped with water immersion sensors, thermal aerosol detectors, and smoke detectors to monitor battery status in real time. All electrical connections use IP67-rated waterproof connectors to ensure safe use in rainy or other harsh weather conditions.

[0037] This utility model significantly improves space utilization and ease of operation through its compact layout, integrated welding, and modular structure, making it suitable for various narrow or long-distance charging scenarios.

[0038] The above are merely preferred embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A compact charging vehicle body, characterized in that, include: The frame body (10) has a recessed chassis at the bottom center, and the recessed part of the chassis forms a water-cooled cabinet storage frame structure (14) for installing water-cooled modules; the frame body (10) has a battery placement frame structure inside.

2. The compact charging vehicle body according to claim 1, characterized in that, The frame (10) has a three-layer battery placement frame structure inside, namely a first-layer battery placement frame structure (11), a second-layer battery placement frame structure (12), and a third-layer battery placement frame structure (13), which are stacked from top to bottom; one side of the frame (10) is provided with an energy conversion module placement frame structure (15) from top to bottom; the energy conversion module placement frame structure (15) includes several quick-release frame connecting strips arranged horizontally and vertically; the bottom two sides of the third-layer battery placement frame structure (13) are provided with fixing frames (20); one of the fixing frames (20) is provided with a foot pedal connecting frame (16) at the front end for connecting the foot pedal structure; friction strips (18) are provided on the first-layer battery placement frame structure (11), the second-layer battery placement frame structure (12), and the third-layer battery placement frame structure (13).

3. The compact charging vehicle body according to claim 2, characterized in that: The first layer battery placement frame structure (11), the second layer battery placement frame structure (12) and the third layer battery placement frame structure (13) are all provided with guide grooves (19). The guide grooves (19) match the shape of the battery module, which facilitates the insertion and positioning of the battery module.

4. The compact charging vehicle body according to claim 3, characterized in that: The water-cooled cabinet storage frame structure (14) is located at the bottom center of the third-layer battery placement frame structure (13).

5. The compact charging vehicle body according to claim 4, characterized in that: The energy conversion module placement frame structure (15) includes, from top to bottom, a coolant inlet module placement frame structure (151), a first voltage conversion module placement frame structure (152), a charging power conversion module placement frame structure (153), a second voltage conversion module placement frame structure (154), and a battery power output module placement frame structure (155); the modules are connected by built-in cable trays.

6. The compact charging vehicle body according to claim 5, characterized in that: The foot pedal connecting frame (16) has a Z-shaped structure; one end of the foot pedal connecting frame (16) is connected to the outer edge of the fixed frame (20), and the bottom of the other end is flush with the bottom of the water-cooled cabinet storage frame structure (14).

7. The compact charging vehicle body according to claim 6, characterized in that: The friction strip (18) is made of polymer material and is located in the bottom area where each battery placement frame structure contacts the battery.

8. The compact charging vehicle body according to claim 7, characterized in that: The frame body (10) is integrally welded from steel material, and its outer surface is coated with an anti-corrosion coating.

9. The compact charging vehicle body according to claim 8, characterized in that: The top of the vehicle frame (10) is provided with a hoisting interface (21) for use with hoisting equipment for overall handling and deployment.

10. A compact charging vehicle body according to claim 9, characterized in that: The energy conversion module placement frame structure (15) has several quick-release frame connecting strips arranged horizontally and vertically with several mounting holes; the vehicle frame (10) below the third battery placement frame structure (13) has an inspection port (22) and the inspection port (22) is equipped with a removable cover.

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