Heavy-duty tractor battery box, method of manufacture, and heavy-duty tractor

Abstract

The application discloses a heavy-duty tractor battery box, a manufacturing method and a heavy-duty tractor, and belongs to the technical field of vehicle engineering. The battery box comprises a tray for placing a battery and side plates arranged on both sides. The back of the tray is provided with a back plate. The tray, the side plates and the back plate are connected with each other through a plurality of connecting members to form a box structure. In the application, composite materials are used to replace non-key stress parts in a traditional all-metal box, thereby significantly reducing the overall weight of the box assembly. Meanwhile, the rigidity and stress concentration resistance of the connection between the box and the vehicle body are maintained, and the problems of excessive local stress, unstable structure support and easy damage and cracking of the box caused by simply reducing the thickness of the metal plate are avoided. Under the premise of guaranteeing the overall structural strength and reliability of the box, high-quality light weight is realized.

Description

Technical Field

[0001] This invention belongs to the field of vehicle engineering technology, and in particular relates to a heavy-duty tractor battery box, a manufacturing method, and a heavy-duty tractor. Background Technology

[0002] Heavy-duty trucks / tractor units, due to their heavy loads and the need to meet long-distance transportation requirements, carry batteries that are significantly larger and heavier than those of ordinary vehicle power supplies. To securely mount the batteries to the vehicle body, a dedicated battery enclosure is typically required for fixation.

[0003] Currently, most heavy-duty tractor trucks use vertical double-layer battery boxes made entirely of metal (such as steel plates cold-pressed, welded, and riveted). While the all-metal structure provides good fixation and mechanical strength for the batteries, the high density of the material results in an excessively heavy battery box assembly. This not only increases the curb weight of the vehicle chassis, affecting overall vehicle lightweighting, but also indirectly increases fuel consumption and exhaust emissions, reducing the vehicle's fuel economy.

[0004] To reduce overall vehicle energy consumption, the battery pack design urgently needs to be weight-reduced. However, due to the structural characteristics of sheet metal stamping, the traditional all-metal battery pack structure has several weak points under stress. If weight is reduced directly by conventional methods such as thinning the material or making holes in the steel plate, it will lead to excessive local stress and low utilization of the material for overall strength, resulting in unstable support and fixation of the battery pack. Under vehicle vibration, the battery pack is prone to structural failure such as damage and cracking. Summary of the Invention

[0005] To address the problems existing in the prior art, this invention provides a heavy-duty tractor battery box, a manufacturing method, and a heavy-duty tractor. By using composite materials to replace the non-critical load-bearing parts that account for a large proportion of the traditional all-metal box, the overall weight of the box assembly is significantly reduced. At the same time, the rigidity and stress concentration resistance at the connection between the box and the vehicle body are maintained, avoiding the problems of excessive local stress, unstable structural support, and easy damage and cracking of the box caused by simply thinning the metal sheet thickness. High-quality lightweighting is achieved while ensuring the overall structural strength and reliability of the box.

[0006] The present invention is implemented as follows: In one aspect, this application provides a heavy-duty tractor battery box, including a tray for placing batteries and side plates on both sides. A back plate is provided on the back of the tray, and the tray, side plates and back plate are interconnected by multiple connecting members to form a box structure.

[0007] Furthermore, the tray includes an upper tray and a lower tray spaced apart vertically, so that the battery box forms a vertical double-layer structure.

[0008] Furthermore, the tray and side panels are made of thermoplastic composite material.

[0009] Furthermore, both the back plate and the connecting components are made of metal.

[0010] Furthermore, the back plate is provided with a back assembly component for fixed connection with the vehicle body bracket assembly.

[0011] Furthermore, the tray and side plate are provided with multiple mounting holes, which are round holes and / or oblong holes; the tray and side plate are fixedly connected to the connecting components through fasteners that pass through the mounting holes.

[0012] Furthermore, it also includes a cover plate, which is installed at the opening of the box formed by assembling the tray, side panels and back panel.

[0013] On the other hand, a method for manufacturing a heavy-duty tractor battery box as described above is provided, comprising the following steps: Thermoplastic composite material is molded into the tray and the side panels on both sides using molding equipment and molds; The formed pallet and side plate are drilled and / or punched using tooling to form corresponding holes. The connecting components are fixedly installed at the corresponding holes, and the tray, side plate and back plate are fastened together to form the battery box body.

[0014] Furthermore, the corresponding hole positions are machined into round holes and / or oblong holes.

[0015] Another aspect provides a heavy-duty tractor unit, characterized in that it includes a vehicle body and any of the aforementioned heavy-duty tractor unit battery boxes, wherein the battery box is fixedly mounted to the battery box portion of the vehicle body via a rear assembly component.

[0016] The advantages and technical effects of this invention are as follows: By adopting the above-mentioned technical solution, low-density composite material components are tightly combined with high-strength metal material components. Composite materials replace a large proportion of non-critical load-bearing parts (such as battery support and protection structures) in traditional all-metal enclosures, significantly reducing the overall weight of the enclosure assembly. This effectively reduces the vehicle's curb weight and lowers fuel consumption and exhaust emissions during vehicle operation. At the same time, the metal connecting components and backplate are retained for vehicle body fixing and main load-bearing parts, maintaining the rigidity and stress concentration resistance at the connection between the enclosure and the vehicle body. This avoids the problems of excessive local stress, unstable structural support, and easy damage and cracking of the enclosure caused by simply thinning the metal sheet thickness. High-quality lightweighting is achieved while ensuring the overall structural strength and reliability of the enclosure. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure provided in an embodiment of the present invention.

[0018] Figure 2 This is a schematic diagram of the connection structure between the tray and the side panel provided in an embodiment of the present invention.

[0019] Figure 3 This is a schematic diagram of the installation of the connecting components provided in an embodiment of the present invention.

[0020] In the diagram: 1. Pallet; 1-1. Upper pallet; 1-2. Lower pallet; 2. Side panel; 3. Back panel; 4. Connecting components. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0022] It should be noted that the terms "upper", "lower", "left", "right", "top", "bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, 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 limiting the present invention.

[0023] like Figures 1 to 3 As shown, this application provides a heavy-duty tractor battery box, including a tray 1 for placing batteries and side plates 2 on both sides. A back plate 3 is provided on the back of the tray 1. The tray 1, side plates 2 and back plate 3 are interconnected by multiple connecting members 4 to form a box structure.

[0024] Furthermore, the tray 1 includes an upper tray 1-1 and a lower tray 1-2 arranged at intervals, so that the battery box forms a vertical double-layer structure.

[0025] Furthermore, the tray 1 and side panels 2 are made of thermoplastic composite materials. Composite material components (such as thermoplastic composite GMT) have the physical properties of low density, high specific strength, and the ability to be molded into complex structures. Applying composite materials to large-area load-bearing and protective components such as the battery tray 1 and side panels can significantly reduce the weight of the enclosure itself compared to traditional cold-pressed or welded all-metal enclosures, thereby reducing the unnecessary load on the vehicle, directly reducing fuel consumption, and lowering pollutant emissions.

[0026] Furthermore, both the back plate 3 and the connecting component 4 are made of metal. High-strength metal components are used for support and fastening at the connection points with the vehicle body and where concentrated loads are applied. This collaborative structure, combining metal fixing / support with composite material load-bearing, leverages the high stress resistance and pull-out resistance of metal materials to ensure the stability of the housing under severe vehicle vibration and bumpy conditions, while maximizing the lightweight advantages of composite materials, achieving an optimal balance between structural strength and lightweight requirements.

[0027] Furthermore, the back plate 3 is provided with a back assembly component for fixed connection with the vehicle body bracket assembly.

[0028] Furthermore, both the tray 1 and the side plate 2 are provided with multiple mounting holes, which are round holes and / or oblong holes; the tray 1 and the side plate 2 are fixedly connected to the connecting member 4 by fasteners that pass through the mounting holes.

[0029] Furthermore, it also includes a cover plate, which is installed at the opening of the box body formed by assembling the tray 1, side plate 2 and back plate 3.

[0030] On the other hand, a method for manufacturing a heavy-duty tractor battery box as described above is provided, comprising the following steps: Thermoplastic composite material is molded into the tray 1 and the side plates 2 on both sides using molding equipment and mold; The formed pallet 1 and side plate 2 are drilled and / or punched using tooling to form corresponding holes; The connecting component 4 is fixedly installed at the corresponding hole position, and the tray 1, side plate 2 and back plate 3 are fastened together to form the battery box body.

[0031] Furthermore, the corresponding hole positions are machined into round holes and / or oblong holes.

[0032] Another aspect provides a heavy-duty tractor unit, characterized in that it includes a vehicle body and any of the aforementioned heavy-duty tractor unit battery boxes, wherein the battery box is fixedly mounted to the battery box portion of the vehicle body via a rear assembly component.

[0033] The advantages and technical effects of this invention are as follows: By adopting the above-mentioned technical solution, low-density composite material components are tightly combined with high-strength metal material components. Composite materials replace the non-critical load-bearing parts (such as battery load-bearing and protective structures) that account for a large proportion of traditional all-metal enclosures, significantly reducing the overall weight of the enclosure assembly. This effectively reduces the vehicle's curb weight and lowers fuel consumption and exhaust emissions during vehicle operation. At the same time, the metal connecting components 4 and the back plate 3 are retained for vehicle body fixing and main load-bearing parts, maintaining the rigidity and stress concentration resistance at the connection between the enclosure and the vehicle body. This avoids the problems of excessive local stress, unstable structural support, and easy damage and cracking of the enclosure caused by simply thinning the metal sheet thickness. High-quality lightweighting is achieved while ensuring the overall structural strength and reliability of the enclosure.

[0034] Traditional sheet metal stamping processes, limited by structural characteristics, often require increasing the overall material thickness to address weak points with excessive local stress. This solution utilizes the tight composite assembly of composite and metal materials, leveraging the excellent overall forming ability and stress dispersion characteristics of composite materials to eliminate the weak points of traditional sheet metal parts, thus avoiding cracking or damage to the enclosure body caused by localized stress concentration.

[0035] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A heavy-duty tractor battery box, characterized in that, It includes a tray for placing batteries and side panels on both sides. A back panel is provided on the back of the tray. The tray, side panels and back panel are connected to each other by multiple connecting members to form a box structure.

2. The heavy-duty tractor battery box according to claim 1, characterized in that, The tray includes an upper tray and a lower tray spaced apart, so that the battery box forms a vertical double-layer structure.

3. The heavy-duty tractor battery box according to claim 1, characterized in that, The tray and side panels are made of thermoplastic composite material.

4. The heavy-duty tractor battery box according to claim 1, characterized in that, The back plate and connecting components are all made of metal.

5. The heavy-duty tractor battery box according to claim 1, characterized in that, The back plate is provided with a back assembly component for fixed connection with the vehicle body bracket assembly.

6. The heavy-duty tractor battery box according to claim 1, characterized in that, The tray and side plate are provided with multiple mounting holes, which are round holes and / or oblong holes; the tray and side plate are fixedly connected to the connecting components by fasteners that pass through the mounting holes.

7. The heavy-duty tractor battery box according to claim 1, characterized in that, It also includes a cover plate, which is installed at the opening of the box formed by assembling the tray, side panels and back panel.

8. A method for manufacturing a heavy-duty tractor battery box as described in any one of claims 1 to 7, characterized in that, Includes the following steps: Thermoplastic composite material is molded into the tray and the side panels on both sides using molding equipment and molds; The formed pallet and side plate are drilled and / or punched using tooling to form corresponding holes. The connecting components are fixedly installed at the corresponding holes, and the tray, side plate and back plate are fastened together to form the battery box body.

9. The manufacturing method according to claim 8, characterized in that, The corresponding hole positions are machined into round holes and / or oblong holes.

10. A heavy-duty tractor unit, characterized in that, The vehicle includes a vehicle body and a heavy-duty tractor battery box as described in any one of claims 1 to 7, wherein the battery box is fixedly mounted to the battery box portion of the vehicle body via a rear assembly component.

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