Mounting frame of battery pack and vehicle

Abstract

The utility model discloses a mounting rack of a battery pack and a vehicle. The mounting rack comprises a first assembling unit and a second assembling unit, the first assembling unit is arranged between the two chassis girders, the first assembling unit comprises first cross beams, first longitudinal beams and first assembling parts, and a first containing cavity is formed between every two adjacent first cross beams and the two chassis girders between the two first cross beams; the second assembling unit is arranged on the side, away from the first assembling unit, of each chassis girder and comprises second cross beams, second longitudinal beams, outer edge beams and second assembling parts, a second containing cavity is formed among every two adjacent second cross beams, the chassis girder between the second cross beams and the outer edge beams, and the first assembling parts and the second assembling parts are used for being connected with a battery pack. The chassis girder is provided with at least one of a first longitudinal beam and a second longitudinal beam. According to the embodiment of the invention, the mounting rack has excellent performance in the aspects of improving the use strength and prolonging the service life, realizes a weight reduction effect, and reduces the mounting difficulty of the battery pack at the same time.

Description

Technical Field

[0001] The present application relates to the technical field of new energy vehicles, and specifically to a battery pack mounting rack and a vehicle. Background Art

[0002] At present, some new energy heavy-duty commercial trucks on the market adopt a bottom-mounted battery pack assembly structure to cope with their huge power demand and harsh working environment. However, although this structure reduces the risk of battery pack failure by combining multiple standard boxes or small battery boxes, it also brings a series of problems.

[0003] First, installing multiple battery boxes undoubtedly increases assembly time, making the production process more complicated and time-consuming. Second, due to the decentralized assembly structure, weight reduction becomes particularly difficult, which not only affects the energy efficiency of the vehicle, but may also lead to a decline in overall performance. In addition, the high and low voltage connections of multiple battery boxes become extremely complicated, which not only increases the difficulty of maintenance, but also leads to an increase in costs.

[0004] In terms of the frame, this bottom-hanging assembly structure also brings many inconveniences. The complicated process affects production efficiency, and the cost of battery replacement is significantly increased due to the special assembly structure. More importantly, in order to support these battery boxes, additional brackets are required, which increases the weight of the vehicle and leads to increased energy consumption.

[0005] Therefore, there is room for improvement in the battery pack assembly structure of new energy heavy-duty commercial vehicles. Utility Model Content

[0006] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model provides a battery pack mounting bracket, which performs well in improving the use strength and extending the service life, and achieves a weight reduction effect, while reducing the difficulty of installing the battery pack.

[0007] Another aspect of the present invention provides a vehicle.

[0008] According to the mounting frame of the battery pack of the embodiment of the first aspect of the utility model, the mounting frame has a first direction consistent with the extension direction of the chassis beam and a second direction perpendicular to the first direction. The mounting frame includes a first assembly unit and a second assembly unit. The first assembly unit is suitable for being installed between the two chassis beams, the first assembly unit includes a first cross beam and a first longitudinal beam, the two ends of the first cross beam are suitable for connecting the two chassis beams respectively, at least two first cross beams are arranged at intervals along the first direction, the first longitudinal beam is arranged between each two adjacent first cross beams, and the first accommodating cavity for installing the fixing block of the battery pack is formed between the two chassis beams between each two adjacent first cross beams. There are at least two first longitudinal beams, all of which are located in the first accommodating cavity and are respectively connected to the two chassis beams. The first assembly unit is provided with a first assembly part for connecting the battery pack; the second assembly unit is suitable for being installed on a part of each chassis beam away from the first assembly unit. On the other hand, the second assembly unit includes a second cross beam, a second longitudinal beam and an outer edge beam, one end of the second cross beam is suitable for connecting to the chassis beam, at least two second cross beams are arranged at intervals along the first direction, the outer edge beam is connected to the end of the second cross beam away from the chassis beam, a second accommodating cavity for installing a fixed block of a battery pack is formed between every two second cross beams, the chassis beam and the outer edge beams, a second longitudinal beam is arranged between every two adjacent second cross beams, the second longitudinal beam is connected to the chassis beam and is located in the second accommodating cavity, and a second assembly part connected to the battery pack is provided on the second assembly unit; wherein, at least one of the first longitudinal beam and the second longitudinal beam is provided on the chassis beam.

[0009] According to the mounting frame of the battery pack of the embodiment of the first aspect of the utility model, a first accommodating cavity for installing a battery pack fixing block is formed by a first assembly unit, and the battery pack is tightly connected to the mounting frame by a first assembly part. A second accommodating cavity for installing a battery pack fixing block is formed by a second assembly unit, and the battery pack is tightly connected to the mounting frame by a second assembly part. By arranging the two second accommodating cavities symmetrically relative to the first accommodating cavity, both sides of the battery pack can be subjected to symmetrical pulling forces on both sides of the mounting frame. The symmetrical distribution of pulling forces can improve the stability of the battery pack in the mounting frame, reduce potential risks caused by uneven force, and extend the service life of the battery pack.

[0010] The first crossbeam is provided to strengthen the connection strength between the two chassis beams, and also effectively disperse some of the stress generated during the operation of the vehicle. In this way, the overall stability of the chassis can be improved, and the vehicle can maintain a stable driving state under various road conditions. By providing the first longitudinal beam, the torsion resistance of the chassis beam is significantly enhanced. As a longitudinal reinforcement, the first longitudinal beam effectively improves the resistance of the chassis beam when subjected to torsional loads. When the chassis copes with complex road conditions and emergencies, it can maintain better structural integrity and stability, thereby ensuring the safety and reliability of the vehicle.

[0011] The second assembly unit includes a second cross beam, a second longitudinal beam and an outer side beam, which provide symmetrical and stable connection points for the battery pack, thereby significantly improving the connection effect between the battery pack and the vehicle chassis.

[0012] According to the mounting frame of the battery pack of some embodiments of the utility model, the two ends of the first cross beam respectively form a first flange, and one end of the second cross beam forms a second flange. Corresponding to each of the chassis beams, the first flange and the second flange are connected to each other by passing through the chassis beam via a plurality of first fasteners, and at least one of the first longitudinal beam and the second longitudinal beam is passed through the chassis beam via a plurality of second fasteners; wherein, the first flange is overlapped with the end of the first longitudinal beam and is passed through and fixed to the chassis beam via a third fastener, and / or, the second flange is overlapped with the end of the second longitudinal beam and is passed through and fixed to the chassis beam via a fourth fastener.

[0013] According to the mounting frame of the battery pack of some embodiments of the present invention, the first assembly part is arranged on the first cross beam and the second assembly part is arranged on the first longitudinal beam and the outer side beam; or, the first assembly part is arranged on the first longitudinal beam and the second assembly part is arranged on the second cross beam.

[0014] According to the mounting bracket of the battery pack in some embodiments of the present invention, the first assembly part and the second assembly part are both floating nuts.

[0015] According to the mounting frame of the battery pack in some embodiments of the present invention, the first assembly unit includes three first beams to form two first accommodating cavities, and the first beams on both sides are respectively provided with positioning portions for positioning the battery pack.

[0016] In some embodiments, the two positioning portions are centrally symmetrically arranged relative to the first cross beam in the middle.

[0017] In some embodiments, the positioning portion includes a square positioning column, a circular positioning hole is formed in the center of the square positioning column, and the positioning portion is integrally formed on the first beam.

[0018] In some embodiments, a corresponding second assembly unit is provided on each side of the chassis beam, and the second assembly unit includes three second cross beams to form two second accommodating cavities, and the outer edge beam is connected to one end of the three second cross beams away from the chassis beam.

[0019] In some optional embodiments, on each of the second assembly units, the outer edge beams are at least two arranged vertically at intervals, and the two outer edge beams are connected by a reinforcement plate;

[0020] The outer edge beam is connected to the second cross beam and a reinforcing angle plate is connected between the two.

[0021] According to the mounting frame of the battery pack in some embodiments of the present invention, the first cross beam, the first longitudinal beam, the second cross beam, and the second longitudinal beam are all castings.

[0022] The vehicle according to the second embodiment of the utility model comprises a vehicle body, two chassis beams and a mounting frame for a battery pack. The chassis beam is connected to the bottom of the vehicle body; the mounting frame is mounted on the chassis beam. The mounting frame for the battery pack is the mounting frame for the battery pack in the first embodiment of the present application.

[0023] According to some embodiments of the present utility model, the vehicle provides a stable and reliable energy support structure through the mounting frame of the battery pack.

[0024] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0026] Figure 1 is a stereogram of a mounting frame in some embodiments of the utility model;

[0027] Figure 2 is a bottom view of a mounting frame in some embodiments of the utility model;

[0028] Figure 3 is a bottom view of a mounting frame in other embodiments of the utility model;

[0029] Figure 4 is another perspective view of the mounting frame in some embodiments of the utility model;

[0030] Figure 5 yes Figure 1 A local enlarged schematic diagram in FIG.

[0031] Figure 6 is a schematic diagram of the connection between the first cross beam and the chassis beam in some embodiments of the utility model;

[0032] Figure 7 It is a structural diagram of the floating nut in some embodiments of the utility model;

[0033] Figure 8 It is a schematic diagram of the connection between the second crossbeam and the floating nut in some embodiments of the utility model.

[0034] Reference numerals:

[0035] Mounting frame 100,

[0036] The first assembly unit 10, the first cross beam 11, the first flange 111, the first longitudinal beam 12, the first accommodating cavity 13, the first assembly member 14, the positioning portion 15, the positioning column 151, the positioning hole 152,

[0037] The second assembly unit 20, the second accommodating cavity 2, the second cross beam 21, the second flange 211, the second longitudinal beam 22, the second assembly part 23, the outer side beam 24, the reinforcing plate 25, the reinforcing angle plate 26, the reinforcing cross beam 27, the connecting part 28,

[0038] The first fastener 30, the second fastener 40, the adapter plate 50,

[0039] Floating nut 60, adjustable space 6, nut box 61, welding nut 62, floating square nut 63,

[0040] Chassis frame 200. DETAILED DESCRIPTION

[0041] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0042] In the description of the present utility model, it should be understood that the terms "center", "upper", "lower", "horizontal", "top", "bottom", "inner", "outer", "vertical", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0043] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0044] At present, the battery packs of new energy heavy-duty commercial vehicles mainly include two types: back-mounted and bottom-mounted. The back-mounted setting is to place the battery pack at the rear of the cab. The bottom-mounted setting is to place the battery pack at the bottom of the frame and connect it through a mounting frame. The mounting frame of the battery pack of this application is mainly an improvement on the mounting frame of the vehicle with a bottom-mounted setting.

[0045] Reference below Figure 1-Figure 8 The mounting bracket 100 of the battery pack according to the embodiment of the utility model is described. The mounting bracket 100 is installed on the chassis beam 200 of the vehicle and is used to connect the battery pack.

[0046] According to some embodiments of the first aspect of the present invention, the mounting bracket 100 of the battery pack includes: a first direction and a second direction, such as Figure 1 As shown, the first direction is the extension direction of the chassis beam 200, and the second direction is perpendicular to the first direction.

[0047] like Figure 1-Figure 3 As shown, the mounting frame 100 of the battery pack includes: a first assembly unit 10 and a second assembly unit 20. The first assembly unit 10 and the second assembly unit 20 are both used to connect the battery pack.

[0048] The first assembly unit 10 is suitable for being installed between two chassis beams 200 of the vehicle. On the one hand, it is used to connect the fixing block on the battery pack, and on the other hand, it can also enhance the connection stability between the two chassis beams 200.

[0049] There are two second assembly units 20, which are arranged at intervals along the second direction, and each second assembly unit 20 is installed on a side of a corresponding chassis beam 200 away from the first assembly unit 10. Figure 1 As shown, the two second assembly units 20 are symmetrically arranged relative to the first assembly unit 10, achieving symmetry in the overall structure.

[0050] The second assembly unit 20 is connected to the fixing block of the battery pack to ensure that the battery pack is firmly and symmetrically connected to the vehicle. Whether in straight-line driving or turning, the battery pack can maintain left-right balance without deviation or shaking.

[0051] like Figure 2 As shown, the first assembly unit 10 includes a first transverse beam 11 and a first longitudinal beam 12 .

[0052] The two ends of the first cross beam 11 are respectively suitable for connecting two chassis beams 200, and at least two first cross beams 11 are arranged at intervals along the first direction. The first cross beam 11 not only realizes the effective connection between the two chassis beams 200, but also bears the role of balancing the weight of the second assembly units 20 on both sides.

[0053] Since the second assembly unit 20 is located on both sides, the weight it bears may affect the balance of the chassis. The first crossbeam 11 can balance this weight distribution. It connects the two chassis beams 200 to form a strong support structure, ensuring that the weight of the second assembly unit 20 can be evenly distributed on the two chassis beams 200, and effectively avoiding the situation of uneven weight distribution at both ends of the vehicle. In this way, it can prevent partial damage to the mounting frame 100 caused by excessive force on one end, thereby ensuring the stability and safety of the vehicle during driving.

[0054] A first longitudinal beam 12 is arranged between every two adjacent first cross beams 11. The first longitudinal beam 12 can strengthen the strength of the chassis beam 200 and disperse the force applied to the vehicle during driving, thereby reducing the force burden on the chassis beam 200. Under complex road conditions, especially in turning, bumping or emergency braking, the chassis beam 200 may be subjected to a large twisting force, and the first longitudinal beam 12 can reduce the risk of the chassis beam 200 twisting.

[0055] A first accommodating cavity 13 for mounting a fixing block of a battery pack is formed between the two chassis girders 200 between every two adjacent first cross beams 11 .

[0056] It is worth noting that a battery pack as a whole will form a plurality of protruding fixing blocks, wherein the fixing block in the middle part is located in the first accommodating cavity 13 .

[0057] There are at least two first longitudinal beams 12, both of which are located in the first accommodating cavity 13, and the two first longitudinal beams 12 are respectively connected to two chassis beams 200. The first longitudinal beams 12 play a role in dispersing the force on the chassis beam 200.

[0058] In some embodiments, the first cross beam 11 extends vertically, that is, the first cross beam 11 has a certain height, and a weight-reducing hole is provided on the first cross beam 11. There are multiple weight-reducing holes, and they are arranged at non-main force-bearing points of the first cross beam 11. This ensures that the first cross beam 11 has a large amount of supporting effect on the chassis, and reduces the overall weight of the mounting frame 100, which helps to achieve lightweighting of the vehicle.

[0059] like Figure 1 As shown, a first assembly member 14 for connecting the battery pack is provided on the first assembly unit 10. The fixing block of the battery pack is connected to the mounting frame 100 through the first assembly member 14.

[0060] like Figure 1 , Figure 3-Figure 4 As shown, the second assembly unit 20 includes a second transverse beam 21 , a second longitudinal beam 22 and an outer edge beam 24 .

[0061] One end of the second cross beam 21 is suitable for connecting to the chassis beam 200 , and at least two second cross beams 21 are arranged at intervals along the first direction.

[0062] The plurality of second cross beams 21 form a frame structure, which enhances the supporting strength of the mounting frame 100 and can also resist impacts and vibrations from multiple directions, thereby improving the safety of the battery pack.

[0063] Meanwhile, multiple second beams 21 are provided to avoid the risk of overall structural damage caused by damage to a single second beam 21. In actual use, even if a second beam 21 is damaged for various reasons, the other second beams 21 can still maintain structural integrity, thereby ensuring the normal operation of the vehicle.

[0064] In addition, it is convenient for operators to perform maintenance and replacement work. Operators can replace a second beam 21 as needed without disassembling the entire mounting frame 100 .

[0065] In some embodiments, the second cross beam 21 extends vertically, that is, the second cross beam 21 has a certain height, and a plurality of weight-reducing holes are provided on the second cross beam 21. The plurality of weight-reducing holes are provided at non-main force-bearing points of the second cross beam 21. The supporting effect of the second cross beam 21 on the chassis beam 200 is ensured, and the overall weight of the mounting frame 100 is reduced, which helps to achieve lightweighting of the vehicle.

[0066] like Figure 1-Figure 3 , Figure 6 As shown, the outer side beam 24 is connected to the end of the second cross beam 21 away from the chassis beam 200, and a second accommodating cavity 2 for installing a fixed block in the battery pack is formed between every two second cross beams 21, the chassis beam 200 and the outer side beam 24.

[0067] The fixing blocks on both sides of the battery pack are suitable for installation in the second accommodating cavity 2. This forms a close connection between the fixing blocks in the battery pack and the second assembly unit 20, effectively preventing the battery pack from shaking or shifting during driving, while enhancing the reliability of the battery pack and improving the safety of the overall structure.

[0068] like Figure 3-Figure 4As shown, a second longitudinal beam 22 is arranged between every two adjacent second cross beams 21, and the second longitudinal beam 22 is connected to the chassis beam 200 and is located in the second accommodating cavity 2. The second longitudinal beam 22 can achieve a structural reinforcement effect on the chassis beam 200 and can also disperse the force on the chassis beam 200.

[0069] The second assembly unit 20 is provided with a second assembly member 23 for connecting the battery pack. The second assembly member 23 is used to connect the battery pack to the mounting frame 100.

[0070] At least one of the first longitudinal beam 12 and the second longitudinal beam 22 is disposed on the chassis beam 200 .

[0071] For example, Figure 2 As shown, when the first longitudinal beam 12 is provided on the chassis beam 200 , a first accommodating cavity 13 is formed between the two first longitudinal beams 12 between every two adjacent first transverse beams 11 .

[0072] For example, Figure 3 As shown, when the second longitudinal beam 22 is arranged on the chassis beam 200 , a second accommodating cavity 2 is formed between every two second transverse beams 21 , the second longitudinal beams 22 therebetween, and the outer edge beams 24 .

[0073] For another example, when the first longitudinal beam 12 and the second longitudinal beam 22 are simultaneously provided on the chassis beam 200 , the first accommodating cavity 13 and the second accommodating cavity 2 are respectively realized by the structures of the above two examples, which will not be described in detail herein.

[0074] It is worth noting that the mounting frame 100 forms a frame structure by connecting multiple beams, which reduces the material coverage of the entire surface, and reduces the amount of material while maintaining the structural strength and rigidity by making weight-reducing holes, thereby achieving the effect of reducing the overall weight of the mounting frame 100 and helping to achieve lightweighting of the vehicle.

[0075] The mounting frame 100 is connected to the battery pack through the first assembly unit 10 and the second assembly unit 20, and also meets the heat dissipation requirements of the battery pack, allowing the heat generated by the battery pack to be quickly transferred to the outside through the gaps between the beams, thereby helping to achieve the heat dissipation function.

[0076] like Figure 1 , Figure 5 As shown, according to the mounting frame 100 of the battery pack of some embodiments of the present invention, the two ends of the first cross beam 11 respectively form a first flange 111, and one end of the second cross beam 21 forms a second flange 211. Corresponding to each chassis beam 200, the first flange 111 and the second flange 211 are connected by a plurality of first fasteners 30 that penetrate the chassis beam 200.

[0077] A through hole is formed on the chassis beam 200 , and the first fastener 30 passes through the through hole and is connected to the first flange 111 and the second flange 211 at both ends.

[0078] The first flange 111 and the second flange 211 enhance the structural strength of the connection position between the first cross beam 11, the second cross beam 21 and the chassis beam 200, and also reduce the number of parts.

[0079] In such Figure 4 , Figure 6 In the illustrated embodiment, the end surface of the first flange 111 extends outward to form an “I” shape.

[0080] The two upper and lower connecting beams in the shape of an “I” are connected to the middle vertical beam to form a stable support frame, which can disperse and resist external forces when subjected to stress, thereby improving the stability of the overall structure.

[0081] Secondly, the “I”-shaped connection end face has a larger contact area, which can better connect with other components and increase the stability of the connection. A larger contact area means that the connection can disperse more force, reduce the stress at the connection position, and thus reduce the risk of damage caused by stress concentration.

[0082] In addition, the "I"-shaped structure also has good torsional resistance, which can prevent deformation or breakage under the action of torsional force and maintain good stability. At the same time, it enhances the torsional resistance of the chassis frame 200 and reduces the possibility of deformation and damage.

[0083] Optionally, the first fastener 30 includes a bolt, a nut, etc.

[0084] At least one of the first longitudinal beam 12 and the second longitudinal beam 22 passes through the chassis beam 200 through a plurality of second fasteners 40. For example, when only the first longitudinal beam 12 is provided, the first longitudinal beam 12 is connected to the chassis beam 200 through the second fasteners 40. For another example, Figure 4 As shown, when only the second longitudinal beam 22 is provided, the second longitudinal beam 22 is connected to the chassis frame 200 through the second fastener 40. For another example, when the first longitudinal beam 12 and the second longitudinal beam 22 are provided at the same time, they are connected to the chassis frame 200 together through the second fastener 40.

[0085] In some embodiments not shown in the figures, the first flange 111 is overlapped with the end of the first longitudinal beam 12 and is fixed to the chassis beam 200 through a third fastener. This overlapping arrangement allows the first longitudinal beam 12 and the first cross beam 11 to form a whole at the connection, thereby enhancing the integrity and stability of the mounting frame 100. At the same time, the use of the third fastener ensures the tightness and reliability of the connection, so that the battery pack can remain stable during the driving of the vehicle.

[0086] And / or, the second flange 211 is overlapped with the end of the second longitudinal beam 22 and is fixed to the chassis beam 200 through a fourth fastener. The second flange 211 is also overlapped with the end of the second longitudinal beam 22 and is fixed to the chassis beam 200 through a fourth fastener. This ensures the integrity of the battery pack structure and the reliability of the connection.

[0087] Alternatively, if Figure 1 As shown, the end surface of the second flange 211 connected to the second longitudinal beam 22 is bent and extended outward to form an extension surface, so that the connection between the second cross beam 21 and the second longitudinal beam 22 forms a stacking effect. In this way, the connection area is increased, the connection is more reliable, and the stress concentration phenomenon at the connection can be effectively dispersed.

[0088] It is worth noting that, by using the third fastener and the fourth fastener, a closed-loop connection effect is formed at the connection between the first crossbeam 11 and the first longitudinal beam 12, and the second crossbeam 21 and the second longitudinal beam 22. This closed-loop connection makes the entire battery pack mounting frame 100 more stable and reliable. During the assembly process, since each crossbeam and longitudinal beam is not welded or integrally formed, the connection has a certain pressure tolerance, which helps to reduce stress concentration and reduce assembly difficulty.

[0089] In some embodiments, an adapter plate 50 is further provided at the connection between the first cross beam 11 and the chassis beam 200. The adapter plate 50 is L-shaped, with one side of the adapter plate 50 connected to the first cross beam 11 and the other side connected to the chassis beam 200. The adapter plate 50 serves as an intermediate piece between the two, increasing the connection area. This can not only better disperse stress and reduce stress concentration, but also improve the stability of the connection.

[0090] At the same time, since the L-shaped structure itself has good stability and torsion resistance, it can effectively transmit and disperse the force between the first cross beam 11 and the chassis beam 200. Optionally, the connection between the adapter plate 50 and the first cross beam 11 and the chassis beam 200 can be achieved by welding, bolting, etc.

[0091] Alternatively, if Figure 5 As shown, an adapter plate 50 is provided at the connection between the first cross beam 11 and the chassis beam 200 on both sides.

[0092] According to some embodiments not shown in the figures, the first assembly part 14 is arranged on the first cross beam 11 and the second assembly part 23 is arranged on the first longitudinal beam 12 and the outer side beam 24 .

[0093] The first assembly part 14 is provided to support the weight of the battery pack together with the first cross beam 11, to ensure the stable installation of the battery pack on the chassis beam 200, and to absorb the vibration and impact generated by the battery pack during the driving of the vehicle.

[0094] The second assembly part 23 is respectively arranged on the first longitudinal beam 12 and the outer side beam 24, and plays a role of working in cooperation with the first assembly part 14. The first longitudinal beam 12 is the main supporting structure inside the battery pack, and the connection between the second assembly part 23 and the first assembly part 14 ensures the stability of the battery pack in the first direction.

[0095] The outer edge beam 24 serves as the outer protection structure of the battery pack. The second assembly part 23 thereon not only enhances the overall strength of the battery pack, but also helps prevent damage to the interior of the battery pack caused by external impact.

[0096] Or, if Figure 2 As shown, the first mounting part 14 is arranged on the first longitudinal beam 12 and the second mounting part 23 is arranged on the second transverse beam 21 .

[0097] Or, if Figure 3 , Figure 8 As shown, the first mounting part 14 is arranged on the second longitudinal beam 22 and the second mounting part 23 is arranged on the second transverse beam 21 .

[0098] The first longitudinal beam 12 or the chassis frame 200 is connected to the battery pack via the first assembly part 14 .

[0099] The second assembly parts 23 connect the two sides of the battery pack to the second beams 21 , and distribute the weight to avoid excessive pressure on the second beam 21 at a single position, thereby extending the service life of the mounting frame 100 .

[0100] The plurality of mounting points formed by the first assembly member 14 and the second assembly member 23 are double "E" shaped in shape, such as Figure 2-Figure 3 As shown, the setting of double "E"-shaped mounting points can improve the mode of the battery pack in the second direction, effectively reduce the vibration amplitude generated on both sides of the battery pack when it is vibrated, thereby reducing the risk of disconnection and desoldering of the electrical circuit on the battery pack, and ensuring the reliability of the battery pack.

[0101] According to some embodiments of the present invention, the battery pack mounting frame 100 is as follows: Figure 2 As shown, the first assembly part 14 and the second assembly part 23 are both floating nuts 60. The floating nuts 60 can ensure the stability of the assembly, and can also effectively absorb the accumulated tolerances during the assembly process, prevent problems such as loose assembly or misalignment caused by the accumulated tolerances, and ensure the verticality requirements of the mounting frame 100 and each mounting point on the battery pack.

[0102] like Figure 7As shown, in some optional embodiments, the floating nut 60 includes: a nut box 61, two welding nuts 62 and a floating square nut 63. An adjustable space 6 is set inside the nut box 61, and the floating square nut 63 is set in the adjustable space 6. The floating square nut 63 can move horizontally in this adjustable space 6, and a threaded hole is formed on the floating square nut 63. Since the threaded hole is not fixed, it can be fine-tuned in the horizontal direction as needed. This means that by adjusting the horizontal position of the floating square nut 63 in the adjustable space 6, the position of the threaded hole can be fine-tuned. This fine-tuning function not only makes the installation of the battery pack stable and reliable, but also improves the efficiency of connecting the battery pack to the mounting frame 100.

[0103] According to some embodiments of the present invention, the battery pack mounting frame 100 is as follows: Figure 1-Figure 3 As shown, the first assembly unit 10 includes three first beams 11 to form two first accommodating chambers 13. Figure 2-Figure 4 As shown, the first cross beams 11 on both sides are respectively provided with positioning portions 15 for positioning the battery pack. The two fixing blocks located in the middle of the battery pack are respectively installed in the two first accommodating cavities 13. The mounting frame 100 can effectively fix the battery pack by connecting with the battery pack fixing blocks to prevent it from shaking during operation.

[0104] The two positioning parts 15 are arranged symmetrically with respect to the middle first cross beam 11. The function of these positioning parts 15 is to accurately position the battery pack to ensure that its position during the assembly process is accurate. By improving the assembly accuracy, the battery pack can be prevented from shifting or tilting during the assembly process, thereby ensuring the safety of the battery pack.

[0105] According to some embodiments of the present invention, the battery pack mounting frame 100 is as follows: Figure 5 As shown, the positioning portion 15 includes a square positioning column 151 , a circular positioning hole 152 is formed at the center of the square positioning column 151 , and the positioning portion 15 is integrally formed on the first crossbeam 11 .

[0106] The square positioning column 151 makes the connection between the positioning portion 15 and the mounting bracket 100 more stable.

[0107] The circular positioning hole 152 can form an accurate match with the corresponding part on the battery pack, making the positioning process faster and more accurate, thereby simplifying the assembly steps, reducing the assembly time, and reducing the errors that may occur during the assembly process.

[0108] The positioning portion 15 is formed on the first cross beam 11 to ensure accurate pre-positioning of the battery pack in the first direction, which is beneficial for subsequent installation.

[0109] According to the mounting frame 100 of the battery pack of some embodiments of the utility model, a second assembly unit 20 is correspondingly provided on each side of the chassis beam 200, and the second assembly unit 20 includes three second cross beams 21 to form two second accommodating cavities 2, and the outer edge beam 24 is connected to one end of the three second cross beams 21 away from the chassis beam 200.

[0110] The four fixing blocks on both sides of the battery pack can be accurately placed in the second accommodating chambers 2 on both sides, thereby achieving a tight connection between the battery pack and the mounting frame 100. This not only further enhances the connectivity of the battery pack, but also effectively reduces the risk of the battery pack being offset.

[0111] The outer side beam 24 is connected to the end of the three second cross beams 21 away from the chassis beam 200 to form a complete frame. This frame not only enhances the stability and rigidity of the mounting frame 100, but also can absorb and disperse part of the impact force when the vehicle collides or other accidents occur, protecting the battery pack from damage.

[0112] In such Figure 1 In some of the embodiments shown, on each second assembly unit 20 , there are at least two outer side beams 24 arranged at intervals in the vertical direction, and the two outer side beams 24 are connected by a reinforcing plate 25 .

[0113] The reinforcing plate 25 can enhance the supporting force between the outer side beams 24 , effectively avoiding the shaking phenomenon that may occur between the two outer side beams 24 , thereby ensuring the stability of the second accommodating cavity 2 .

[0114] In some optional embodiments, the outer side beam 24 can adopt a side beam member with a cross section of "L" or "mouth". For example, the outer side beam 24 at the top vertically adopts a "mouth" side beam member, and the outer side beam 24 at the bottom adopts an "L"-shaped side beam member.

[0115] Optionally, the reinforcing plate 25 is made of a high-strength steel plate to further enhance the supporting effect on the outer side beam 24 .

[0116] The outer side beam 24 is connected to the second cross beam 21 and a reinforcing angle plate 26 is connected therebetween. The reinforcing angle plate 26 has a reinforcing effect, thereby enhancing the bearing capacity of the entire second assembly unit 20 and improving the torsion resistance of the mounting frame 100.

[0117] Optionally, the reinforcing plate 25 and the reinforcing angle plate 26 are both made of high-strength steel plates, so as to further improve the strength of the mounting frame 100 .

[0118] According to the mounting frame 100 of the battery pack of some embodiments of the present invention, the first cross beam 11, the first longitudinal beam 12, the second cross beam 21, and the second longitudinal beam 22 are all castings.

[0119] This is because the internal structure of the casting is dense, without defects such as pores and slag inclusions, so it has high strength and stiffness. In the mounting bracket 100 of the battery pack, the first cross beam 11, the first longitudinal beam 12, the second cross beam 21 and the second longitudinal beam 22, as key supporting and connecting components, need to bear various forces and vibrations from the battery pack and the vehicle. Using castings can ensure that these components have sufficient stiffness and strength to cope with various complex working environments.

[0120] In addition, the casting also has high production efficiency and can reduce production costs.

[0121] According to some embodiments of the present utility model, the mounting bracket 100 of the battery pack, as Figure 1-Figure 3 shown, the second assembly unit 20 further includes a reinforcing cross beam 27. The two ends of the reinforcing cross beam 27 are respectively connected to the outer side beam 24 and the chassis girder 200 on the same side. The reinforcing cross beam 27 has a certain pulling force on the second assembly unit 20, and correspondingly reduces the amplitude on both sides of the mounting bracket 100.

[0122] Optionally, the cross section of the reinforcing cross beam 27 is in a "mouth" shape. The two ends of the reinforcing cross beam 27 are connected to the outer side beam 24 and the chassis girder 200 through connectors 28.

[0123] According to a vehicle of the second aspect of the present utility model.

[0124] The above vehicle includes a vehicle body, two chassis girders 200 and a mounting bracket 100.

[0125] The chassis girder 200 is connected to the bottom of the vehicle body and is arranged along the length direction of the vehicle body.

[0126] The mounting bracket 100 is mounted on the chassis girder 200.

[0127] The vehicle of the embodiment of the present utility model ensures the safety performance of the battery pack by improving the stability and reliability of the mounting bracket. By reducing the weight of the mounting bracket, the production cost of the vehicle is reduced, and at the same time, the energy utilization is improved.

[0128] Next, with reference to the attached Figure 1 、 Figure 3-Figure 8 , describe the mounting bracket 100 according to a specific embodiment of the present application.

[0129] With reference to Figure 1 、 Figure 3-Figure 5 , the mounting bracket 100 includes a first assembly unit 10, a second assembly unit 20, a first fastener 30, a second fastener 40 and an adapter plate 50.

[0130] With reference to Figure 3 , the first assembly unit 10 is mounted between two chassis girders 200 of the vehicle.

[0131] The first assembly unit 10 includes three first beams 11 , a first accommodating cavity 13 , a first assembly member 14 and a positioning portion 15 .

[0132] The three first cross beams 11 are arranged at intervals along the first direction, and two ends of each first cross beam 11 are connected to two chassis beams 200 respectively.

[0133] Reference Figure 3-Figure 4 There are two positioning portions 15 , which are respectively formed on the first cross beams 11 on both sides, and the two positioning portions 15 are centrally symmetrically arranged relative to the middle first cross beam 11 .

[0134] The positioning portion 15 includes a square positioning column 151 . A circular positioning hole 152 is formed in the center of the square positioning column 151 .

[0135] Reference Figure 3 The first accommodating cavity 13 is formed by two adjacent first cross beams 11 and two chassis beams 200 therebetween.

[0136] Reference Figure 5-Figure 6 A first flange 111 is formed at both ends of each first beam 11 .

[0137] The adapter plate 50 is disposed at both ends of the first cross beam 11 on both sides. The adapter plate 50 forms an L-shape, with one part connected to the first cross beam 11 and the other part connected to the chassis beam 200 .

[0138] Reference Figure 3 The first assembly part 14 is a floating nut 60 and is disposed on the second longitudinal beam 22 .

[0139] The second assembly unit 20 is installed on a side of each chassis beam 200 that is away from the first assembly unit 10 .

[0140] Reference Figure 1 The second assembly unit 20 includes three second cross beams 21 , a second longitudinal beam 22 , a second assembly member 23 , two outer side beams 24 , a reinforcing plate 25 , a reinforcing angle plate 26 , a reinforcing cross beam 27 and a connecting member 28 .

[0141] The three second cross beams 21 are arranged at intervals along the first direction, and one end of each second cross beam 21 is connected to the chassis beam 200 , and the two outer side beams 24 are connected to one end of the second cross beam 21 away from the chassis beam 200 .

[0142] The two outer beams 24 are arranged at intervals in the vertical direction.

[0143] The reinforcing plate 25 is arranged between the two outer side beams 24 .

[0144] The reinforcing angle plate 26 is disposed between the outer edge beam 24 and the second cross beam 21 .

[0145] The reinforcing cross beam 27 is arranged between the outer side beam 24 and the chassis beam 200 on the same side.

[0146] One end of each second cross beam 21 forms a second flange 211. The first flange 111 and the second flange 211 are connected to each other by passing through the chassis beam 200 through a plurality of first fasteners 30.

[0147] The second longitudinal beam 22 is disposed between two adjacent second transverse beams 21 , is connected to the chassis beam 200 , and is located in the second accommodating cavity 2 .

[0148] Reference Figure 4 The second fastener 40 is used to connect the second longitudinal beam 22 and the chassis beam 200 .

[0149] The second accommodating cavity 2 is shared by two adjacent second transverse beams 21, the second longitudinal beam 22 therebetween, and the two outer side beams 24 therebetween. The second flange 211 is overlapped with the end of the second longitudinal beam 22 and is fixed to the chassis beam 200 through a fourth fastener.

[0150] The connecting members 28 are arranged at both ends of the reinforcing cross beam 27 .

[0151] The second assembly part 23 is a floating nut 60 and is disposed on the second cross beam 21 .

[0152] Reference Figure 7 The floating nut 60 includes a nut box 61, two welding nuts 62 and a floating square nut 63. An adjustable space 6 is provided inside the nut box 61, and the floating square nut 63 is provided in the adjustable space 6. The floating square nut 63 can move horizontally in the adjustable space 6, and a threaded hole is formed on the floating square nut 63.

[0153] Other components of the mounting bracket according to the embodiment of the utility model, such as a vehicle, are known to those skilled in the art and will not be described in detail here.

[0154] In the description of this specification, the description with reference to the terms "embodiment", "example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0155] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A battery pack mounting frame, used for mounting on a chassis beam of a vehicle, characterized in that: The mounting frame has a first direction consistent with the extension direction of the chassis beam and a second direction perpendicular to the first direction, and the mounting frame includes: A first assembly unit is suitable for being installed between the two chassis beams. The first assembly unit includes a first cross beam and a first longitudinal beam. Both ends of the first cross beam are suitable for connecting the two chassis beams respectively. At least two first cross beams are arranged at intervals along the first direction. The first longitudinal beam is arranged between each two adjacent first cross beams. A first accommodating cavity for installing a fixing block of a battery pack is formed between the two chassis beams between each two adjacent first cross beams. There are at least two first longitudinal beams, all of which are located in the first accommodating cavity and are respectively connected to the two chassis beams. The first assembly unit is provided with a first assembly part connected to the battery pack. a second assembly unit, adapted to be installed on a side of each chassis beam away from the first assembly unit, the second assembly unit comprising a second cross beam, a second longitudinal beam and an outer side beam, one end of the second cross beam being adapted to be connected to the chassis beam, at least two second cross beams being arranged at intervals along the first direction, the outer side beam being connected to one end of the second cross beam away from the chassis beam, a second accommodating cavity for installing a fixing block of a battery pack being formed between every two second cross beams, the chassis beam and the outer side beams, one second longitudinal beam being arranged between every two adjacent second cross beams, the second longitudinal beam being connected to the chassis beam and being located in the second accommodating cavity, and a second assembly part for connecting the battery pack being provided on the second assembly unit; Wherein, at least one of the first longitudinal beam and the second longitudinal beam is arranged on the chassis beam.

2. The mounting bracket for the battery pack according to claim 1, characterized in that: The two ends of the first cross beam respectively form a first flange, and one end of the second cross beam forms a second flange. Corresponding to each chassis beam, the first flange and the second flange are connected by passing through the chassis beam through a plurality of first fasteners, and at least one of the first longitudinal beam and the second longitudinal beam passes through the chassis beam through a plurality of second fasteners; The first flange is overlapped with the end of the first longitudinal beam and is fixed to the chassis beam through a third fastener, and / or the second flange is overlapped with the end of the second longitudinal beam and is fixed to the chassis beam through a fourth fastener.

3. The mounting bracket for the battery pack according to claim 1, characterized in that: The first assembly part is arranged on the first cross beam and the second assembly part is arranged on the first longitudinal beam and the outer edge beam; Alternatively, the first assembly member is arranged on the first longitudinal beam and the second assembly member is arranged on the second transverse beam.

4. The mounting bracket for a battery pack according to claim 1, characterized in that: The first assembly part and the second assembly part are both floating nuts.

5. The mounting bracket for a battery pack according to claim 1, characterized in that: The first assembly unit includes three first crossbeams to form two first accommodating chambers, and the first crossbeams on both sides are respectively provided with positioning portions for positioning the battery pack; The two positioning portions are centrally symmetrically arranged relative to the first cross beam in the middle.

6. The mounting bracket for the battery pack according to claim 5, characterized in that: The positioning portion comprises a square positioning column, a circular positioning hole is formed at the center of the square positioning column, and the positioning portion is integrally formed on the first crossbeam.

7. The mounting bracket for a battery pack according to claim 4, characterized in that: A corresponding second assembly unit is provided on each side of the chassis beam, and the second assembly unit includes three second cross beams to form two second accommodating cavities, and the outer edge beam is connected to one end of the three second cross beams away from the chassis beam.

8. The mounting bracket for the battery pack according to claim 7, characterized in that: On each of the second assembly units, the outer edge beams are at least two arranged vertically at intervals, and the two outer edge beams are connected by a reinforcing plate; The outer edge beam is connected to the second cross beam and a reinforcing angle plate is connected between the two.

9. The mounting bracket for a battery pack according to any one of claims 1 to 8, characterized in that: The first cross beam, the first longitudinal beam, the second cross beam, and the second longitudinal beam are all castings.

10. A vehicle, characterized in that: include: Car body; two chassis beams, the chassis beams being connected to the bottom of the vehicle body; The mounting bracket of the battery pack according to any one of claims 1 to 9, wherein the mounting bracket is mounted on the chassis beam.

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