New energy vehicle chassis and new energy vehicle

Abstract

The application relates to the field of new energy vehicle chassis, in particular to a new energy vehicle chassis and a new energy vehicle, which comprise a vehicle frame, a plurality of frame cross beams and a plurality of frame longitudinal beams; the battery frame is integrated in the vehicle frame, and the battery frame comprises at least one frame unit; when the frame units are multiple, the multiple frame units are sequentially arranged along the longitudinal direction and are connected with each other; the frame unit comprises frame cross beams and frame longitudinal beams; the two frame cross beams are symmetrically arranged and are fixedly connected through the at least two frame longitudinal beams; the middle part of the frame unit is provided with an accommodating groove for accommodating the vehicle frame longitudinal beam; the vehicle frame longitudinal beam is located in the accommodating groove and is fixedly connected with the battery frame through a plurality of connecting pieces. The battery frame can be modularly designed, the battery frame is integrated and assembled according to the number of battery packs, and the maintenance of the battery packs is facilitated.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of new energy vehicle chassis, in particular to a new energy vehicle chassis and a new energy vehicle. BACKGROUND

[0002] With the enhancement of global environmental awareness and the increasingly stringent carbon emission regulations, the market demand for new energy vehicles, especially new energy vehicles, is rapidly growing. Commercial vehicles, as the core equipment of urban logistics, long-distance transportation and construction, are gradually transforming towards electrification. The existing new energy vehicles generally use batteries as the main energy supply device, and the chassis design is the key link to ensure the safety of the battery and the performance of the whole vehicle.

[0003] At present, the arrangement of new energy vehicle batteries gradually changes from the rear back type to the bottom arrangement. This design can fully utilize the space under the vehicle, keep the center of gravity low, and thus improve the stability of the vehicle; on the other hand, it can also reduce the occupied space of the battery, so that the space of the cargo box can be maximized. However, the existing chassis and battery frame structure still has many shortcomings in practical application.

[0004] In the prior art, most battery frames are designed for specific types of batteries and specific capacities, which means that once a battery frame is selected, its applicability is greatly limited. In addition, such battery frames usually adopt a fixed design, i.e. one battery frame corresponds to one type of battery or capacity, and cannot be flexibly modularized according to actual needs. This design limitation leads to the fact that when market demand changes, for example, when a larger capacity battery is needed, the original battery frame is difficult to adapt to the new demand, and the entire battery frame has to be replaced, increasing the cost and complexity.

[0005] During the maintenance and replacement of the battery pack, the fixed frame design in the prior art also exposes many inconveniences. Usually, in order to replace or repair the battery pack, the entire battery frame together with all the batteries needs to be disassembled, which is time-consuming and laborious. Worse still, this disassembly method may cause unnecessary damage to those battery packs that have not failed, thereby further increasing the maintenance cost and time. Therefore, the battery frame design in the prior art needs to be improved to adapt to the growing diversity of needs and improve the maintenance efficiency. SUMMARY

[0006] The purpose of the present application is to provide a new energy vehicle chassis which can modularize the battery frame design and integrate the battery frame according to the number of battery packs, so as to facilitate the maintenance of the battery pack.

[0007] Another object of the present application is to provide a new energy vehicle which can modularly design the battery frame, and integrally assemble the battery frame according to the number of battery packs, so as to facilitate the maintenance of the battery packs.

[0008] The technical scheme of the present application is implemented as follows:

[0009] A new energy vehicle chassis comprises:

[0010] A vehicle frame comprises two symmetrically arranged vehicle frame longitudinal beams and a plurality of vehicle frame transverse beams connected between the two vehicle frame longitudinal beams.

[0011] A battery frame is integrated into the vehicle frame, and the battery frame comprises at least one frame unit; when the frame unit is multiple, the multiple frame units are sequentially arranged in the longitudinal direction and connected to each other, the frame unit comprises frame transverse beams and frame longitudinal beams, the two frame transverse beams are symmetrically arranged and connected and fixed by at least two frame longitudinal beams, a receiving groove for accommodating the vehicle frame longitudinal beam is formed in the middle of the frame unit, the vehicle frame longitudinal beam is located in the receiving groove and connected and fixed with the battery frame by a plurality of connecting pieces.

[0012] The bottom of the frame unit is used for mounting a battery pack.

[0013] Further, the frame transverse beam comprises a middle transverse beam and side transverse beams, two side transverse beams are symmetrically arranged on the left and right sides of the middle transverse beam.

[0014] Further, the middle transverse beam and the side transverse beams are connected and fixed by vertical plates, and the middle transverse beam and the vertical plates on both sides thereof jointly form the receiving groove.

[0015] Further, the bottom of the side transverse beam is provided with a supporting plate.

[0016] Further, the bottom of the frame transverse beam is provided with at least one height-adjusting transverse beam.

[0017] Further, the frame unit further comprises a bidirectional connecting casting, one end of the bidirectional connecting casting is connected with the vertical plate, and the other end is connected with the height-adjusting transverse beam.

[0018] Further, the frame longitudinal beam is arranged at the top of the side transverse beam and close to the vertical plate.

[0019] Further, the height-adjusting transverse beam adopts a rectangular hollow pipe, and at least one layer of horizontal reinforcing plate is arranged inside the height-adjusting transverse beam.

[0020] Further, a plurality of hollow structures are formed on the frame transverse beam and / or the frame longitudinal beam.

[0021] A new energy vehicle comprises the new energy vehicle chassis, and the bottom of the battery frame is provided with a plurality of battery packs.

[0022] Compared with the prior art, the new energy vehicle has the following beneficial effects:

[0023] In the application, the battery frame is modularized, and comprises at least one frame unit. The bottom of the frame unit is provided with a battery pack. Each frame unit can be assembled according to the number of battery packs, so that the battery frame modular assembly with different wheelbase and different power can be obtained, and the battery pack can be conveniently disassembled and maintained. BRIEF DESCRIPTION OF DRAWINGS

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can also be obtained without creative labor.

[0025] Figure 1 The integrated design schematic diagram of the frame rail and the battery frame assembly is provided for the present application.

[0026] Figure 2 The structural schematic diagram of a single frame unit module is provided for the present application.

[0027] Figure 3 The schematic diagram of the battery frame after two frame units are connected is provided for the present application.

[0028] Figure 4 The schematic diagram of the connection between the battery frame and the battery is provided for the present application.

[0029] Figure 5 The three-dimensional schematic diagram of the height-adjusting cross beam is provided for the present application.

[0030] Figure 6 The three-dimensional schematic diagram of the electric truck chassis is provided for the present application.

[0031] In the drawings:

[0032] 1 - vehicle frame; 101 - frame rail; 2 - battery frame;

[0033] 3 - height-adjusting cross beam; 4 - side cross beam; 5 - middle cross beam;

[0034] 6 - bidirectional connecting casting; 7 - frame rail; 8 - vertical plate;

[0035] 9 - accommodating groove; 10 - hollow structure; 11 - battery pack. DETAILED DESCRIPTION

[0036] In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present application with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application but not all the embodiments. The components of the embodiments of the present application described and shown in the drawings can be arranged and designed in various different configurations.

[0037] Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative labor are within the scope of protection of the present application.

[0038] It should be noted that: similar reference numerals and letters represent similar items in the following drawings, therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0039] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship when the product of the present application is usually placed, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", "third" and the like are only used for differentiation and cannot be understood as indicating or implying relative importance.

[0040] In addition, the terms "horizontal", "vertical", "overhang" and the like do not mean that the components must be absolutely horizontal or overhanging, but can be slightly inclined. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0041] In the description of the present application, it should also be noted that, unless otherwise explicitly specified and limited, the terms "arrangement", "installation", "connection", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication inside two elements. For those of ordinary skill in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0042] Some embodiments of the present application will be described in detail with reference to the drawings. The following examples and features in the examples can be combined with each other in the case of no conflict.

[0043] Example 1

[0044] With reference to Figures 1-6 The present embodiment provides a new energy vehicle chassis, comprising:

[0045] The frame 1 comprises two symmetrically arranged frame longitudinal beams 101 and a plurality of frame 1 cross beams connected between the two frame longitudinal beams 101.

[0046] The battery frame 2 is integrated into the frame 1, and the battery frame 2 comprises at least one frame unit. The number of frame units can be designed according to the actual capacity demand of the whole vehicle.

[0047] The bottom of the frame unit is used to install the battery pack 11. When there are multiple frame units, the multiple frame units are arranged in sequence along the longitudinal direction and are connected to each other. The multiple frame units are connected in series along the longitudinal direction, so that more battery packs 11 can be installed, and the total capacity can be improved. Adjacent frame units can be fixed by a plurality of bolts.

[0048] The frame unit comprises frame cross beams and frame longitudinal beams 7. Two frame cross beams are symmetrically arranged and fixed by at least two frame longitudinal beams 7. The middle part of the frame unit is provided with a containing groove 9 for containing the frame longitudinal beam 101. The frame longitudinal beam 101 is placed in the containing groove 9, and the frame longitudinal beam 101 is fixed and connected to the battery frame 2 by a plurality of connecting pieces (such as bolts, buckles).

[0049] Specifically, the frame cross beam comprises a middle cross beam 5 and a side cross beam 4. Two side cross beams 4 are symmetrically arranged on the left and right sides of the middle cross beam 5. The bottom of the side cross beam 4 is provided with a supporting plate which can play a supporting role. The length of the middle cross beam 5 corresponds to the width between the two frame longitudinal beams 101, and the length of the side cross beam 4 determines the overall width of the battery frame 2. After the battery frame 2 is installed on the frame longitudinal beam 101, the left and right side cross beams 4 are divided into containing cavities A and C by the two frame longitudinal beams 101, and the two ends of the middle cross beam 5 are connected to the two frame longitudinal beams 101 by connecting castings, and the area between the middle cross beams 5 forms a containing cavity B (such as Figure 1 ).

[0050] The middle cross beam 5 and the side cross beam 4 are fixed and connected by a vertical plate 8, and the middle cross beam 5 and the vertical plate 8 on both sides thereof jointly form the containing groove 9.

[0051] The bottom of the frame cross beam is provided with at least one height-adjusting cross beam 3, when the number of height-adjusting cross beams 3 is two or more, the height-adjusting cross beams 3 can be stacked in the vertical direction, the battery pack 11 can be installed at the bottom of the height-adjusting cross beam 3, the height of the battery pack 11 after installation is adjusted by changing the number of height-adjusting cross beams 3, and the height of the center of gravity of the vehicle is further adjusted. The upper surface of the height-adjusting cross beam 3 is attached to the supporting plate, and the lower surface is attached to the battery pack 11, the height-adjusting cross beam 3 is fixed by bolts, and the stacked height-adjusting cross beams 3 are also fixed by bolts. The number of battery packs 11 is determined according to the working conditions of the truck and the required power. Compared with the prior art, since the battery frame 2 does not have the structure of the base combined with the skeleton, after the battery pack 11 is installed at the bottom of the height-adjusting cross beam 3, the battery pack 11 can be directly installed and removed from the bottom of the battery frame 2, thereby ensuring the convenience of disassembly and maintenance.

[0052] The frame unit further comprises a bidirectional connecting casting 6, one end of the bidirectional connecting casting 6 is connected to the vertical plate 8, and the other end is connected to the height-adjusting cross beam 3, the bidirectional connecting casting 6 can simultaneously connect the frame longitudinal beam 7, the truck longitudinal beam 101 and the height-adjusting cross beam 3 together, increase the torsional strength, and improve the connection reliability of the battery frame 2.

[0053] The frame longitudinal beam 7 is arranged at the top of the side cross beam 4 and close to the vertical plate 8, the frame longitudinal beam 7 is arranged on the left and right side cross beams 4 respectively, the frame longitudinal beam 7 connects the opposite two side cross beams 4, the truck longitudinal beam 101 is located in the accommodating groove 9, and the frame longitudinal beam 7 abuts against the outer side of the truck longitudinal beam 101, thereby further improving the connection stability therebetween (as shown in Figure 2

[0054] Specifically, the height-adjusting cross beam 3 adopts a rectangular hollow pipe, and at least one layer of horizontal reinforcing plates is arranged in the height-adjusting cross beam 3, when one layer of horizontal reinforcing plates is arranged in the height-adjusting cross beam 3, the longitudinal section of the height-adjusting cross beam 3 is in the shape of a sun, and when two layers of horizontal reinforcing plates are arranged in the height-adjusting cross beam 3, the longitudinal section of the height-adjusting cross beam 3 is in the shape of a pair of eyes.

[0055] In the embodiment, preferably, two layers of horizontal reinforcing plates are arranged in the height-adjusting cross beam 3.

[0056] A plurality of hollow structures 10 are arranged on the frame cross beam and / or the frame longitudinal beam 7, so as to realize lightweight design of the battery frame 2.

[0057] The design scheme is adopted in the application:

[0058] ​In one aspect, the battery frame 2 of the present application is directly combined with the frame longitudinal beam 101 to form an integrated support structure. In traditional chassis designs, the frame 1 usually includes a combination of longitudinal beams and cross beams, although this design can effectively support the vehicle body and the battery pack 11, it can cause the chassis to be too heavy, affecting the energy efficiency and endurance of the vehicle. By designing the battery frame 2 as an extension of the frame longitudinal beam 101 and embedding the battery frame 2 in the structure of the frame longitudinal beam 101, the independent configuration of the traditional cross beam is cancelled, and the battery frame 2 not only provides stable support but also serves as a load-bearing component of the chassis. This design reduces the overall weight of the frame 1 while maintaining the rigidity and torsional performance of the structure;

[0059] In a second aspect, the battery frame 2 is designed in a modular manner, consisting of several standardized frame unit modules. Each module is made of high-strength, lightweight materials and has independent load-bearing capacity and good durability. The various frame unit modules are fixed by standardized connectors such as bolts, buckles, etc. This design greatly simplifies the production and assembly process, allowing the battery frame 2 to be pre-assembled and debugged in the factory before being quickly integrated into the vehicle production line. In addition, another important advantage of modular design is the convenience of maintenance and replacement. In actual operation, the wear and tear of the battery pack 11 and the battery frame 2 is inevitable. The traditional fixed battery frame 2 needs to be disassembled when maintained, while the modular frame design of the present application allows individual damaged modules to be replaced without the need for large-scale disassembly of the vehicle chassis, significantly reducing repair time and cost. Modular design also supports personalized configuration, allowing the number of frame modules to be flexibly increased or decreased according to different vehicle models and application scenarios, adapting to diverse market demands;

[0060] In a third aspect, the battery frame 2 support part of the present application adopts an innovative height-adjustable cross beam 3 design, which is equivalent to adjusting the height of the pad to adjust the installation height of the battery pack 11. The height-adjustable cross beam 3 is made of lightweight high-strength alloy material, with the characteristics of light weight and high strength. The height-adjustable cross beam 3 can be designed as a multi-layer adjustable structure according to the number of requirements, and by adjusting the number of layers or positions of the pad, the installation height of the battery pack 11 can be flexibly adjusted, thereby optimizing the distribution of the vehicle's center of gravity and improving the driving stability of the vehicle under different loads and road conditions.

[0061] The specific height adjustment of the height-adjustable cross beam 3 is achieved by providing multiple mounting hole positions on the height-adjustable cross beam 3, which are fixedly connected to the battery frame 2 by bolts or other connectors. According to actual needs, the height of the height-adjustable cross beam 3 is changed to place the battery pack 11 in the ideal installation position. This design is particularly suitable for variable use environments, such as lowering the battery height to stabilize the vehicle body when the load is heavy, or appropriately raising the battery height to avoid damage to the battery pack 11 caused by the impact of the ground on the vehicle when a higher ground clearance is required.

[0062] In addition, the longitudinal section of the height-adjustable cross beam 3 is in the shape of a Chinese character, which also has the function of self-adaptive vibration absorption. Rubber shock pads or other elastic materials are arranged between the adjacent height-adjustable cross beams 3, which can effectively absorb the vibration caused by the uneven road surface when the vehicle is running on the uneven road surface, reduce the impact on the battery pack 11, and prolong the service life of the battery pack 11 and its frame. This design not only guarantees the performance of the whole vehicle, but also significantly improves the safety and comfort of the vehicle.

[0063] In addition, the battery frame 2 body of the present application is made of lightweight high-strength aluminum alloy to achieve the goal of weight reduction while maintaining sufficient structural strength and corrosion resistance. The design of the battery frame 2 can be optimized by computer-aided design (CAD) and finite element analysis (FEA) to ensure that the frame can remain stable under various complex working conditions.

[0064] The battery frame 2 is internally distributed with reinforcing beams and transverse supports (i.e. frame longitudinal beams 7 and frame cross beams), forming a multi-level force transmission path, which not only improves the overall stiffness of the battery frame 2, but also effectively disperses stress in extreme cases to protect the battery pack 11 inside the battery frame 2. The battery pack 11 is fixed in the frame by quick-release buckles or bolts, which not only ensures the firmness of the installation, but also facilitates subsequent maintenance and replacement operations.

[0065] Space utilization and vehicle performance improvement: due to the integrated design of the battery frame 2 and the vehicle frame longitudinal beam 101, the present application optimizes the space utilization rate of the vehicle frame 1 without occupying the vehicle cargo box space. This bottom-mounted battery layout significantly reduces the vehicle's center of gravity, effectively improving the stability and handling performance of the whole vehicle when driving at high speed. Especially in heavy commercial vehicles, by reasonably configuring the positions of the battery frame 2 and the vehicle frame 1, the risk of rollover caused by high center of gravity can be effectively avoided, and the driving safety of the vehicle can be improved.

[0066] The battery frame 2 is produced by a modular production method, and the chassis and battery frame 2 of the present application not only save a large amount of materials and working hours in the production process, but also greatly simplify the manufacturing process. The standardized design of each frame unit module enables the production line to be highly automated and mass-produced, reducing production costs. For new energy commercial vehicle manufacturing enterprises, this design idea brings significant economic benefits and market competitiveness.

[0067] Embodiment 2

[0068] A new energy vehicle (such as an electric truck, such as Figure 6 ), comprising the new energy vehicle chassis, the bottom of the battery frame 2 is installed with a plurality of battery packs 11, and the bottom-mounted battery layout significantly reduces the vehicle's center of gravity, effectively improving the stability and handling performance of the whole vehicle when driving at high speed.

[0069] The beneficial effects of the technical solutions of the present application are:

[0070] The present application proposes an innovative new energy commercial vehicle chassis, which designs the battery frame 2 and the frame longitudinal beam 101 by considering the integrated design method, replaces part of the traditional cross beam of the frame 1 with part of the structure of the battery frame 2, realizes the system lightweight of the frame 1 and the battery frame 2, introduces the modular design idea, the battery frame 2 is modularly designed in units of battery packs 11, and the battery frame 2 is integrated and assembled according to the number of battery packs 11; adjustable pads are developed to realize the height adjustment of the battery frame 2, and the adaptability of the vehicle in different use scenarios and different brand battery models is enhanced; the battery frame 2 has no base skeleton, which is convenient for the installation and disassembly of the battery pack 11. Through these technical innovations, the present application aims to solve the above-mentioned problems in the prior art and provide an efficient and reliable technical solution for the development of the new energy commercial vehicle industry.

[0071] 1. Lightweight design: by canceling the traditional cross beam, replacing part of the cross beam with the battery frame 2 directly combined with the longitudinal beam, canceling the bottom skeleton of the battery frame 2, and using new materials to replace the traditional steel materials, the present application significantly reduces the overall weight of the chassis, optimizes the energy efficiency of the whole vehicle, and prolongs the cruising range.

[0072] 2. Modular design: standardized modular design facilitates large-scale industrial production, improves assembly efficiency, and reduces manufacturing cost. At the same time, the modular design of the battery frame 2 facilitates the free addition and subtraction of battery packs 11, reducing the difficulty of chassis modification for different wheelbase and different power requirements.

[0073] 3. Universal design for different ground clearance and different brands of batteries: the adjustable height function of the adjustable pad design allows the battery pack 11 to be flexibly adjusted in position according to actual use requirements, improving the adaptability and stability of the vehicle in various road conditions and facing different battery suppliers.

[0074] 4. Improved safety performance: by optimizing the structural design and material selection of the battery frame 2, the strength and durability of the frame are improved, effectively protecting the battery pack 11 from impact damage; the vibration absorption function of the pad further improves the driving safety of the whole vehicle.

[0075] 5. Space optimization: the innovative chassis and battery frame 2 layout greatly improve the space utilization rate of the vehicle, reduce the vehicle's center of gravity, improve the vehicle's handling, and adapt to the application requirements of different commercial vehicle scenarios.

[0076] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, and are not intended to limit the present application; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that the technical solutions recorded in the foregoing embodiments can still be modified, or some or all of the technical features can be replaced by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

[0077] The above only describes the preferred embodiments of the present application and is not intended to limit the present application. For those skilled in the art, the present application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A new energy vehicle chassis, characterized in that, The application relates to a new energy vehicle chassis, which comprises the following parts: a frame (1) comprising two symmetrically arranged frame longitudinal beams (101) and a plurality of frame (1) cross beams connected between the two frame longitudinal beams (101); a battery frame (2) integrated with the frame (1), wherein the battery frame (2) comprises at least one frame unit; when the frame unit is multiple, the multiple frame units are sequentially arranged in the longitudinal direction and are connected with each other, the frame unit comprises frame cross beams and frame longitudinal beams (7), the two frame cross beams are symmetrically arranged and are connected and fixed by at least two frame longitudinal beams (7), the middle part of the frame unit is provided with a containing groove (9) for containing the frame longitudinal beam (101), the frame longitudinal beam (101) is located in the containing groove (9) and is connected and fixed with the battery frame (2) by a plurality of connecting pieces; the bottom of the frame unit is used for mounting a battery pack (11), the bottom of the frame cross beam is provided with at least one height-adjusting cross beam (3), when the number of the height-adjusting cross beams (3) is two or more, the height-adjusting cross beams (3) can be stacked in the vertical direction, the battery pack (11) is mounted at the bottom of the height-adjusting cross beam (3), and the height of the mounted battery pack (11) is adjusted by changing the number of the height-adjusting cross beams (3), so that the height of the gravity center of the vehicle is adjusted. The frame cross beam comprises middle cross beams (5) and side cross beams (4), and two side cross beams (4) are symmetrically arranged on the left and right sides of the middle cross beam (5). The middle cross beam (5) and the side cross beam (4) are connected and fixed by vertical plates (8), and the middle cross beam (5) and the vertical plates (8) on the two sides thereof jointly form the containing groove (9). The bottom of the side cross beam (4) is provided with a supporting plate.

2. The new energy vehicle chassis according to claim 1, characterized in that, The frame unit further comprises a bidirectional connecting casting (6), one end of the bidirectional connecting casting (6) is connected with the vertical plate (8), and the other end of the bidirectional connecting casting (6) is connected with the height-adjusting cross beam (3).

3. The new energy vehicle chassis according to claim 2, characterized in that, The top of the side cross beam (4) and the position close to the vertical plate (8) are provided with the frame longitudinal beam (7).

4. The new energy vehicle chassis according to claim 3, characterized in that, The height-adjusting cross beam (3) adopts a rectangular hollow pipe, and at least one layer of horizontal reinforcing plates is arranged in the height-adjusting cross beam (3).

5. The new energy vehicle chassis according to claim 3, characterized in that, A plurality of hollow structures (10) are arranged on the frame cross beam and / or the frame longitudinal beam (7).

6. The new energy vehicle chassis according to claim 5, characterized in that, The application further relates to a new energy vehicle chassis, and the bottom of the battery frame (2) is provided with a plurality of battery packs (11).

7. The new energy vehicle chassis according to claim 1, characterized in that, ​ 8. The new energy vehicle chassis according to claim 1, characterized in that, ​ 9. A new energy vehicle, characterized in that, ​

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