Heavy duty vehicle and battery frame therefor

Abstract

The utility model discloses a heavy load vehicle and battery frame thereof, belong to vehicle battery installation technical field. The battery frame includes the load frame for installing the battery package, the load frame is by the cuboid frame that first bearing bar along the length direction extension, the second bearing bar along the width direction extension and the third bearing bar along the height direction extension enclose, wherein, first bearing bar will the load frame along the width direction is separated into first area, second area and third area in proper order, two groups of skin framework for installing the battery package skin, two groups skin framework are detachably connected in first area and third area's upside of load frame respectively, skin framework and load frame jointly enclose the installation space that contains battery package, the frame connecting portion for being connected with the frame, it is detachably installed on the upper surface of load frame. The utility model has realized the lightweight design of battery frame and improved its installation efficiency.

Description

Technical Field

[0001] This utility model relates to the field of vehicle battery installation technology, and in particular to a battery frame for heavy-duty vehicles. Background Technology

[0002] As core transportation tools in logistics and engineering, the reliability and practicality of the power battery system of heavy-duty vehicles directly affect their operating efficiency. Typically, a battery frame is connected to the chassis of a heavy-duty vehicle. The battery frame has multiple battery chambers, with each battery pack housed within its respective chamber. Because the battery frame is rigidly connected to the chassis, the chassis experiences significant torsion due to road conditions during operation, and this torsional force is directly transmitted to the rigidly connected battery frame. Currently, to ensure the safety of the battery system under such stress, existing battery frame designs typically improve structural stability by increasing the thickness of the frame material and strengthening the connectors. However, an excessively heavy battery frame not only increases the overall vehicle energy consumption but also reduces the effective load-bearing space of the tractor unit.

[0003] Furthermore, the installation process of existing chassis-type battery frames is complex and cumbersome. It requires multiple sets of specialized tooling for positioning and numerous adjustments to the connectors to ensure accuracy, significantly increasing installation time per vehicle and making disassembly more difficult for later maintenance. Additionally, the connection components between the existing battery frame and the vehicle frame are relatively fixed, meaning that if users need to replace the battery frame with a different model or size, they must simultaneously replace the connection points on the battery frame to match the vehicle frame, resulting in poor compatibility. Utility Model Content Therefore, this utility model proposes a battery frame that achieves a lightweight design while improving its installation efficiency.

[0004] To address the aforementioned technical problems, this utility model provides the following technical solution: A battery frame for a heavy-duty vehicle includes: a support frame for mounting a battery pack, the support frame being a cuboid frame formed by a first support rod extending along the length direction, a second support rod extending along the width direction, and a third support rod extending along the height direction; wherein the first support rod divides the support frame into a first section, a second section, and a third section along the width direction; two sets of skin frames for mounting the battery pack skin, the two sets of skin frames being detachably connected to the upper sides of the first section and the third section of the support frame, the skin frames and the support frame together forming an installation space for accommodating the battery pack; and a frame connection portion for connecting to a vehicle frame, which is detachably mounted on the upper surface of the support frame.

[0005] In some embodiments of this utility model, the skin frame includes an upper surface frame and longitudinal rods connected to the lower side of the upper surface frame. The skin frame is detachably connected to the load-bearing frame via a connecting plate located on the lower side of the longitudinal rods.

[0006] In some embodiments of this utility model, the material density of the skin skeleton is less than that of the load-bearing frame, and / or the cross-sectional dimensions of the skin skeleton are less than those of the load-bearing frame.

[0007] In some embodiments of this utility model, four sets of frame connection parts are provided, and the four sets of frame connection parts are respectively located at the transition positions between the first and second zones and between the second and third zones of the load-bearing frame.

[0008] In some embodiments of this utility model, each set of the frame connection part includes at least one connecting screw. The connecting screw includes a first threaded area and a second threaded area. The first threaded area and the second threaded area have opposite directions of rotation. The connecting screw is connected to the second bearing rod through the first threaded area. The second threaded area of ​​the connecting screw is located on the upper side of the second bearing rod.

[0009] In some embodiments of this utility model, the second bearing rod is constructed as a rectangular tube, and a connecting sleeve is provided inside the second bearing rod. The first threaded area of ​​the connecting screw is threadedly connected to the connecting sleeve.

[0010] In some embodiments of this utility model, the outer side of the second bearing rod is further provided with a first reinforcing plate. The first reinforcing plate covers at least a portion of the upper surface of the second bearing rod. A flexible plate is connected to the upper surface of the first reinforcing plate. The connecting screw passes through the upper surfaces of the second bearing rod, the first reinforcing plate, and the flexible plate.

[0011] This utility model also provides a heavy-duty vehicle, including a frame and a battery frame. The frame includes longitudinal beams, and the longitudinal beams are provided with a plurality of matrix connection holes and battery frame connection parts that are detachably connected to the matrix connection holes.

[0012] In some embodiments of this utility model, the battery frame connecting part includes an L-shaped connecting bracket, the L-shaped connecting bracket includes a first side arm and a second side arm that are perpendicular to each other, the first side arm is provided with a first connecting hole that matches the matrix connecting hole of the longitudinal beam, and the second side arm is provided with a second connecting hole that matches the vehicle frame connecting part.

[0013] In some embodiments of this utility model, the L-shaped connecting bracket further includes two reinforcing arms located on the sides of the first side arm and the second side arm, the two reinforcing arms being parallel to each other and constructed as triangular plates.

[0014] The technical solution of this utility model has the following technical advantages over the prior art: The battery frame for heavy-duty vehicles provided by this utility model includes a load-bearing frame for mounting the battery pack, two sets of skin frames for mounting the battery pack skin, and a frame connecting part for detachable connection to the vehicle frame. The frame connecting part, detachably connected to the load-bearing frame, facilitates the connection and fixation of the vehicle frame to the upper side of the battery frame via a lifting structure, improving the installation efficiency of the battery frame. By using skin frames in conjunction with the load-bearing frame to form the installation space for the battery pack, compared to an integral load-bearing frame structure, the material or cross-sectional dimensions of the skin frames can be changed, thereby reducing the overall weight of the battery frame while maintaining its load-bearing capacity. Attached Figure Description

[0015] The preferred embodiments of this utility model will be described in detail below with reference to the accompanying drawings, which will help to understand the purpose and advantages of this utility model, wherein: Figure 1 An exploded view of a specific embodiment of the battery frame for heavy-duty vehicles according to this utility model; Figure 2 for Figure 1 Enlarged view of section E in the middle; Figure 3 This is an assembly drawing of a specific embodiment of the battery frame for heavy-duty vehicles according to the present invention. Figure 4 This is an assembly drawing of the vehicle frame and battery frame according to a specific embodiment of the heavy-duty vehicle of this utility model. Figure 5 for Figure 4 Enlarged view of section D. Detailed Implementation

[0016] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0017] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model 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, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0018] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0019] Furthermore, the technical features involved in the different embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0020] like Figure 1 , Figure 2 The diagram illustrates a specific embodiment of the battery frame for heavy-duty vehicles according to this invention. The battery frame 100 includes a support frame 10 for mounting a battery pack, two sets of skin frames 20 for mounting the battery pack skin 60, and a frame connecting part 30 for connecting to a vehicle frame 200. The frame connecting part 30 is detachably mounted to the upper surface of the support frame 10. By employing the frame connecting part 30 detachably connected to the support frame 10, the vehicle frame can be easily hoisted and fixed to the upper side of the battery frame 100 using a lifting structure, thus improving the installation efficiency of the battery frame 100.

[0021] The supporting frame 10 is a cuboid frame structure, which is formed by a first supporting rod 11 extending along the length direction (i.e., the front-to-back direction of the vehicle being installed), a second supporting rod 12 extending along the width direction (i.e., the left-to-right direction of the vehicle being installed), and a third supporting rod 13 extending along the height direction. The three are fixedly connected by welding to form a frame body with stable mechanical properties. Along the width direction of the supporting frame 10, four parallel and spaced first supporting rods 11 divide the supporting frame 10 into a first zone 10a, a second zone 10b, and a third zone 10c. The first zone 10a and the third zone 10c are symmetrically distributed on both sides and are the main supporting areas of the battery pack. The second zone 10b is located in the middle and serves as an auxiliary supporting area for the battery pack. This partitioning design can better adapt to the installation layout of multi-module battery packs, further optimize weight distribution, and avoid local stress concentration.

[0022] Two sets of skin frames 20 are detachably connected to the upper sides of the first section 10a and the third section 10c of the support frame 10, respectively, forming an installation space for accommodating the battery pack together with the support frame 10. Compared to a structure using an integral support frame 10, by using skin frames 20 in conjunction with the support frame 10 to form the installation space for the battery pack, the weight of the battery frame 100 can be reduced while maintaining its load-bearing capacity by changing the material or cross-sectional dimensions of the skin frames 20. For example, the skin frames 20 can be made of aluminum alloy, and the support frame 10 can be made of high-strength steel, or the skin frames 20 and the support frame 10 can be made of the same material, but the cross-sectional dimensions of the rods of the skin frames 20 can be smaller than those of the rods of the support frame 10, thereby reducing the overall weight of the battery frame.

[0023] Specifically, such as Figure 1 As shown, the skin frame 20 includes an upper surface frame 21 and longitudinal rods 22. The upper surface frame 21 is a rectangular frame that matches the edge contour of the upper surface of the supporting frame 10. The longitudinal rods 22 are vertically connected to the four lower corners of the upper surface frame 21, and a connecting plate 23 is welded to their lower ends. The connecting plate 23 has bolt holes and is detachably connected to the first supporting rod 11 and the second supporting rod 12 on the upper side of the supporting frame 10 by bolts. This detachable structure facilitates the individual replacement of the skin frame 20, reducing maintenance costs. At the same time, the skin 60 covering the skin frame 20 can protect the ends and top edges of the battery pack from impacts by external debris.

[0024] Specifically, in one embodiment, the height of the installation space enclosed by the support frame 10 and the skin frame 20 is slightly greater than the height of the battery pack; that is, the height of both the support frame 10 and the skin frame 20 is less than the height of the battery pack. The height of the support frame 10 accounts for 50% or more of the total height of the battery frame 100, meaning the height of the support frame 10 is greater than or equal to the height of the skin frame 20. This allows the main load-bearing area of ​​the battery frame 100 to account for a larger proportion, thus meeting the strength requirements of the battery frame 100.

[0025] The upper surface of the first support rod 11 located on the lower side of the support frame 10 has several threaded holes (i.e., battery connection parts) for bolt connection with the mounting lug at the bottom of the battery pack; such as Figure 1 As shown, a connecting support plate 40 is provided on the side of the first support rod 11 located on the upper side of the support frame 10. The connecting support plate 40 has threaded holes for connecting with the lateral fixing member on the top of the battery pack. The double fixing structure ensures that the battery pack does not move within the frame, improving stability during driving.

[0026] Specifically, in one optional embodiment, the frame connection portion 30 is provided in four groups, respectively located at the transition position between the first zone 10a and the second zone 10b of the load-bearing frame 10 and the transition position between the second zone 10b and the third zone 10c. This position is a mechanical support node of the frame, which can evenly transfer the load of the battery frame 100 to the frame.

[0027] Specifically, such as Figure 2 As shown, each frame connection part 30 includes two connecting screws. The connecting screws are double-ended screws with a first threaded area and a second threaded area with opposite directions of rotation. The first threaded area is used to connect with the second support rod 12, and the second threaded area is located on the upper side of the second support rod 12 and is used to mate with the connection structure of the frame 200. Because the threads rotate in opposite directions, rotating the connecting screws during installation allows for quick alignment and tightening with the second support rod 12, eliminating the need for additional fixing tools and improving assembly efficiency.

[0028] In one optional embodiment, the second support rod 12 is constructed as a rectangular tube. Compared to a solid rod, the rectangular tube reduces weight while maintaining bending strength. A connecting sleeve (not shown in the figure) is welded and fixed between the upper and lower surfaces of the rectangular tube, and the internal thread of the connecting sleeve matches the first thread area of ​​the connecting bolt. The connecting sleeve enhances the connection reliability between the second support rod 12 and the frame connection part 30.

[0029] Specifically, in one alternative implementation, such as Figure 2As shown, a first reinforcing plate 14 is welded to the outer side of the second support rod 12. The first reinforcing plate 14 is a bent steel plate that covers part of the upper surface and two sides of the second support rod 12, forming a U or L-shaped wrapping structure to further enhance the local rigidity of the second support rod 12. A flexible plate 15 (such as a rubber plate) is attached to or detachably connected to the upper surface of the first reinforcing plate 14. Connecting screws are sequentially inserted through the second support rod 12, the first reinforcing plate 14, and the flexible plate 15. The flexible plate 15 can act as a buffer when the battery frame 100 is connected to the vehicle frame 200, reducing the transmission of vibration during vehicle operation and protecting the battery pack structure.

[0030] Specifically, in one alternative implementation, such as Figure 2 As shown, the second support rod 12 is further provided with a second reinforcing plate 16 in the area connecting the frame connection part 30. The surface of the second reinforcing plate 16 extends in the vertical direction, and the two sides of the second reinforcing plate 16 are respectively welded to the third support rod 13 to further enhance the load-bearing strength of the frame connection area.

[0031] When assembling the battery frame, firstly, the battery pack is installed on the first zone 10a and the third zone 10c of the support frame 10 through the battery connection part (if the battery pack capacity does not meet the requirements, an additional battery pack is installed on the second zone 10b). Then, the skin frame 20 is installed on the upper side of the first zone 10a and the third zone 10c of the support frame 10. The frame connection part 30 is connected to the second support rod 12 of the support frame 10. Finally, the skin 60 is installed on the outer surface of the skin frame 20 and the support frame 10 to complete the assembly of the battery frame 100.

[0032] This utility model also provides a specific embodiment of a heavy-duty vehicle. For example... Figure 4 As shown, the heavy-duty vehicle includes a frame 200 and a battery frame 100. The longitudinal beams 201 of the frame 200 are U-shaped steel, and a plurality of matrix connection holes 201a are formed along the length of the longitudinal beams 201. These matrix connection holes 201a are arranged at equal intervals, forming multiple sets of connection points. The battery frame connecting parts 300, mounted on the longitudinal beams 201, are detachably connected to the matrix connection holes 201a by bolts, and are used to connect the battery frame 100. The matrix connection holes 201a are designed to allow adjustment of the installation position of the battery frame connecting parts 300 according to the length of the battery frame 100, achieving flexible adaptation to battery frames 100 of different capacities and improving the vehicle's versatility.

[0033] Specifically, such as Figure 5As shown, the battery frame connecting part 300 is constructed as an L-shaped connecting bracket, including a first side arm 301 and a second side arm 302 that are perpendicular to each other. The first side arm 301 has a first connecting hole 301a that matches the matrix connecting hole 201a of the longitudinal beam 201, and is fixed to the longitudinal beam 201 by bolts; the second side arm 302 has a second connecting hole 302a that matches the connecting screw of the battery frame 100, and the second threaded area of ​​the connecting screw passes through the second connecting hole 302a and is locked by a nut to achieve a rigid connection between the battery frame 100 and the vehicle frame 200.

[0034] In one optional embodiment, two reinforcing arms 303 are welded to the sides of the first side arm 301 and the second side arm 302 of the L-shaped connecting bracket. The two reinforcing arms 303 are parallel to each other and are triangular plates. The two right-angled sides of the triangular plates are welded to the first side arm 301 and the second side arm 302 respectively, or integrally formed to form a triangular support structure. The reinforcing arms 303 can significantly improve the overall rigidity of the L-shaped bracket, prevent the bracket from bending and deforming during load-bearing, and ensure connection stability.

[0035] When mounting the battery frame 100 onto the vehicle frame 200, the following installation process shall be adopted: After the battery frame 100 with the battery pack installed is assembled, the vehicle frame 200 with the battery frame connecting part 300 connected is hoisted onto the upper side of the battery frame 100. The vehicle frame 200 is lowered so that the second connecting hole 302a of the second side arm 302 of the battery frame connecting part 300 is fitted onto the second thread area of ​​the connecting screw of the battery frame 100. The two are connected and fixed by the connecting nut, thus completing the assembly of the battery frame 100 and the vehicle frame 200.

[0036] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the protection scope of this utility model.

Claims

1. A battery frame for a heavy duty vehicle, characterized in that, include: A support frame for mounting a battery pack, the support frame being a cuboid frame formed by a first support rod extending along the length direction, a second support rod extending along the width direction, and a third support rod extending along the height direction; wherein, the first support rod divides the support frame into a first section, a second section, and a third section in sequence along the width direction; Two sets of skin frames are used to install the battery pack skin. The two sets of skin frames are detachably connected to the upper side of the first and third sections of the support frame, respectively. The skin frames and the support frame together form an installation space to accommodate the battery pack. A frame connection portion for connecting to the vehicle frame is detachably mounted on the upper surface of the load-bearing frame.

2. The battery frame for a heavy duty vehicle of claim 1, wherein, The skin frame includes an upper surface frame and longitudinal rods connected to the lower side of the upper surface frame. The skin frame is detachably connected to the load-bearing frame via a connecting plate located on the lower side of the longitudinal rods.

3. A battery frame for a heavy duty vehicle as claimed in claim 2, wherein, The material density of the skin frame is less than that of the load-bearing frame, and / or the cross-sectional dimensions of the skin frame are less than those of the load-bearing frame.

4. The battery frame for a heavy duty vehicle of claim 1, wherein, The frame connection is provided in four sets, and the four sets of frame connection are respectively located at the transition position between the first and second zones and between the second and third zones of the load-bearing frame.

5. A battery frame for a heavy duty vehicle as claimed in claim 4, wherein, Each set of the frame connection portion includes at least one connecting screw, the connecting screw includes a first threaded area and a second threaded area, the first threaded area and the second threaded area have opposite directions of rotation, the connecting screw is connected to the second support rod through the first threaded area, and the second threaded area of ​​the connecting screw is located on the upper side of the second support rod.

6. A battery frame for a heavy duty vehicle as claimed in claim 5, wherein, The second bearing rod is constructed as a rectangular tube, and a connecting sleeve is provided inside the second bearing rod. The first threaded section of the connecting screw is threadedly connected to the connecting sleeve.

7. A battery frame for a heavy duty vehicle as claimed in claim 6, wherein, The outer side of the second bearing rod is also provided with a first reinforcing plate. The first reinforcing plate covers at least a part of the upper surface of the second bearing rod. A flexible plate is connected to the upper surface of the first reinforcing plate. The connecting screw passes through the upper surfaces of the second bearing rod, the first reinforcing plate, and the flexible plate.

8. A heavy duty vehicle characterized by, The vehicle includes a frame and a battery frame as described in any one of claims 1-7. The frame includes longitudinal beams, which have a plurality of matrix connection holes and battery frame connection portions detachably connected to the matrix connection holes.

9. A heavy duty vehicle as claimed in claim 8, wherein, The battery frame connection includes an L-shaped connection bracket, which includes a first side arm and a second side arm that are perpendicular to each other. The first side arm is provided with a first connection hole that matches the matrix connection hole of the longitudinal beam, and the second side arm is provided with a second connection hole that matches the vehicle frame connection.

10. A heavy-duty vehicle according to claim 9, characterized in that, The L-shaped connecting bracket also includes two reinforcing arms located on the sides of the first and second side arms. The two reinforcing arms are parallel to each other and are constructed as triangular plates.

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