Bearing structure and electric vehicle

Abstract

The invention discloses a bearing structure and an electric automobile, and relates to the technical field of electric automobiles, the bearing structure is used for being connected with an automobile body and comprises a box body, a cover plate and two side longitudinal beams, the box body comprises a mounting space with an upward opening, and the mounting space is used for mounting a battery; the two side longitudinal beams are arranged on the side portions of the box body in the left-right direction respectively, the side longitudinal beams and the box body are integrally formed, each side longitudinal beam is provided with a plurality of vehicle body connecting parts, and the vehicle body connecting parts face upwards and are connected with a vehicle body; the cover plate covers the opening so that the installation space can be sealed. According to the technical scheme, the battery frame and the side longitudinal beam of the vehicle body are completely integrated, and the strength and rigidity of the overall structure of the vehicle body are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of electric vehicles, and in particular to an upper bearing structure and an electric vehicle. Background Art

[0002] For a load-bearing body, the battery and the body-mounted side longitudinal beams are two separate structural components that need to meet their own safety strength requirements. Traditional battery box side beams are made of aluminum alloy extrusion profiles, while the body uses side longitudinal beams welded together with inner and outer sides. The two are connected by bolts, and the separate connection greatly reduces the strength and rigidity of the overall body structure. Summary of the invention

[0003] The main purpose of the present invention is to provide a load-bearing structure and an electric car, aiming to fully integrate the battery frame with the longitudinal beams of the vehicle body, thereby improving the strength and rigidity of the overall structure of the vehicle body.

[0004] To achieve the above object, the present invention provides a load-bearing structure for connecting to a vehicle body, comprising:

[0005] The box body includes an installation space with an opening facing upwards for installing the battery;

[0006] Two side longitudinal beams are respectively arranged at the side of the box body along the left and right directions, the side longitudinal beams are integrally formed with the box body, each of the side longitudinal beams is provided with a plurality of body connection parts, and the plurality of body connection parts are connected to the body upward; and,

[0007] A cover plate is arranged on the opening to make the installation space airtight.

[0008] In one embodiment, the side longitudinal beam and the box body are integrally formed by die casting.

[0009] In one embodiment, the bearing structure further comprises:

[0010] The seat cross beam is arranged on the upper side of the cover plate and is integrally formed with the cover plate.

[0011] In one embodiment, the seat cross beam is integrally formed with the box body through a die-casting process.

[0012] In one embodiment, the plurality of vehicle body connecting portions are detachably connected to the vehicle body.

[0013] In one embodiment, at least one of the body connection parts is sealingly connected to the body.

[0014] In one embodiment, the vehicle body further includes a positioning pin, and the box body further includes:

[0015] A positioning hole is arranged on at least one side of the box body from the front to the rear, and is used to correspond to the positioning pin.

[0016] In one embodiment, the positioning pins are provided in plurality, and the plurality of positioning pins include at least a first positioning pin and a second positioning pin;

[0017] The box body is provided with a plurality of positioning holes, the plurality of positioning holes at least comprising a first positioning hole and a second positioning hole, the first positioning hole is used to correspond to the first positioning pin, and the second positioning hole is used to correspond to the second positioning pin; wherein,

[0018] The first positioning hole includes a circular hole, and the second positioning hole includes an elongated hole, wherein the horizontal dimension of the elongated hole is larger than the horizontal dimension of the circular hole, so that when the first positioning pin rotates in the hole of the circular hole, the elongated hole allows the second positioning pin to move in its hole.

[0019] In one embodiment, the elongated hole is arranged in a waist shape; or,

[0020] The elongated hole is arranged in an arc shape.

[0021] The present invention also provides an electric vehicle, comprising the load-bearing structure as described in any one of the above.

[0022] The technical solution of the present invention is to use the box body to bear the weight of the battery and external impact, and the upward opening design facilitates the installation and maintenance of the battery. The installation space is closed by the cover plate to prevent dust, moisture and other debris from entering, thereby protecting the battery from damage. The side longitudinal beams and the box body are integrally formed to enhance the strength and rigidity of the overall structure and improve the safety performance of the vehicle. The body connection part set on the side longitudinal beam can be connected to the corresponding structure of the body, ensuring the firm connection between the box body and the body. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0024] Figure 1 A structural schematic diagram of an embodiment of a bearing structure provided by the present invention;

[0025] Figure 2 for Figure 1 Schematic diagram of the structure of the positioning hole.

[0026] Description of Figure Numbers:

[0027] 100. Bearing structure;

[0028] 1. Box body; 11. Body connection part;

[0029] 2. Side longitudinal beams;

[0030] 3. Cover plate;

[0031] 4. Seat beam;

[0032] 5. Positioning hole; 51. First positioning hole; 52. Second positioning hole.

[0033] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0036] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of the features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or solutions that satisfy both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0037] For a load-bearing body, the battery and the body-mounted side longitudinal beams are two separate structural components that need to meet their own safety strength requirements. Traditional battery box side beams are made of aluminum alloy extrusion profiles, while the body uses side longitudinal beams welded together with inner and outer sides. The two are connected by bolts, and the separate connection greatly reduces the strength and rigidity of the overall body structure.

[0038] like Figure 1 As shown, in order to solve the above technical problems, the present invention proposes a bearing structure 100, which is used to connect with the vehicle body, and includes a box body 1, a cover plate 3, and two side longitudinal beams 2. The box body 1 includes an installation space with an opening facing upwards, for installing batteries; two side longitudinal beams 2 are respectively arranged on the side of the box body 1 along the left and right directions, and the side longitudinal beams 2 are integrally formed with the box body 1, and each of the side longitudinal beams 2 is provided with a plurality of vehicle body connecting parts 11, and the plurality of vehicle body connecting parts 11 are connected to the vehicle body upwards; the cover plate 3 is covered on the opening to make the installation space airtight.

[0039] The technical solution of the present invention is to use the box body 1 to bear the weight of the battery and external impact, and the upward opening design facilitates the installation and maintenance of the battery. The installation space is closed by the cover plate 3 to prevent dust, moisture and other debris from entering, thereby protecting the battery from damage. The side longitudinal beam 2 and the box body 1 are integrally formed to enhance the strength and rigidity of the overall structure and improve the safety performance of the vehicle. The body connection part 11 provided on the side longitudinal beam 2 can be connected to the corresponding structure of the body, thereby ensuring the firm connection between the box body 1 and the body.

[0040] It can be understood that the one-piece molding setting not only reduces the setting of the connection structure between the side longitudinal beams 2 and the box body 1, but also makes it possible to save the installation gap between the two side longitudinal beams 2 for the box body 1, thereby increasing the volume of the box body 1 and being able to load more batteries, thereby further improving the energy storage capacity and endurance of the vehicle.

[0041] It is understandable that the integral formation of the side longitudinal beam 2 and the box body 1 can be completed by a variety of manufacturing processes, which can be laser welding (using a high-energy laser beam to heat the contact surface of the side longitudinal beam 2 and the box body 1 to a molten state to form a firm connection.), gas shielded welding (using a welding arc and a shielding gas to weld the contact part of the side longitudinal beam 2 and the box body 1 together), or stamping (processing a metal sheet on a stamping machine to form a component with an integrated structure of the side longitudinal beam 2 and the box body 1.)

[0042] In one embodiment, the side longitudinal beam 2 and the box body 1 are integrally formed by die casting.

[0043] With such arrangement, the integral body formed by the side longitudinal beam 2 and the box body 1 has a higher density and strength through die casting, and will be more solid and less prone to cracks or breaks.

[0044] It is understood that die casting is a precision casting process, which is to inject molten metal or alloy into a mold, and then solidify it under high pressure and rapid cooling conditions, so as to obtain parts with complex shapes and high precision. At the same time, the die casting process can accurately control the size and shape of the parts, ensuring that the joints between the side longitudinal beam 2 and the box body 1 are perfectly matched, thereby improving the accuracy and dimensional stability of the entire load-bearing structure 100.

[0045] In one embodiment, the bearing structure 100 further includes a seat crossbeam 4 , which is disposed on the upper side of the cover plate 3 and is integrally formed with the cover plate 3 .

[0046] In this way, the seat cross beam 4 and the cover plate 3 are integrally formed, which can reduce the weak points of the connection parts, improve the rigidity and strength of the overall structure, and avoid failures caused by fatigue damage at the joints. At the same time, the one-piece molding design can simplify the production process, reduce subsequent processing such as welding and bonding, reduce production costs and time, and improve production efficiency.

[0047] It is understandable that the integral formation of the seat cross beam 4 and the cover plate 3 can be completed by a variety of manufacturing processes, which can be laser welding (using a high-energy laser beam to heat the contact surface of the seat cross beam 4 and the cover plate 3 to a molten state to form a firm connection.), gas shielded welding (using a welding arc and a shielding gas to weld the contact portion of the seat cross beam 4 and the cover plate 3 together), or stamping (processing a metal sheet on a stamping machine to form a component with an integrated structure of the seat cross beam 4 and the cover plate 3.)

[0048] In addition, other required interior decoration parts of the vehicle may be integrated into the cover plate 3 to further improve the integration of the cover plate 3.

[0049] In one embodiment, the seat cross beam 4 is integrally formed with the box body 1 by a die-casting process. In this way, the seat cross beam 4 and the cover plate 3 are formed as a whole with higher density and strength by die-casting, and are more solid and less prone to cracks or breaks.

[0050] It is understood that die casting is a precision casting process, which is to inject molten metal or alloy into a mold, and then solidify and shape it under high pressure and rapid cooling conditions, so as to obtain parts with complex shapes and high precision. At the same time, the die casting process can accurately control the size and shape of the parts, so that the joints between the seat cross beam 4 and the box body 1 are perfectly matched, thereby improving the accuracy and dimensional stability of the entire load-bearing structure 100.

[0051] In one embodiment, the plurality of vehicle body connecting parts 11 are detachably connected to the vehicle body.

[0052] In this way, the body connection parts 11 can be detachably connected to the body, and when damaged or worn, the parts can be quickly replaced, reducing downtime and maintenance costs. In addition, the detachable characteristics of the body connection parts 11 can be flexibly configured according to different needs and vehicle models. For automobile manufacturers, the assembly process of different vehicle models can be simplified on the production line, thereby reducing industrial costs.

[0053] It can be understood that there are three vehicle body connecting parts 11 in this embodiment, which are respectively connected to the A-pillar, B-pillar, and C-pillar of the vehicle body. By limiting the positional relationship between the A-pillar, B-pillar, and C-pillar on the vehicle body and multiple connecting parts, different vehicle body structures can be adapted, thereby reducing industrial costs.

[0054] It is understandable that the multiple vehicle body connection parts 11 can be detachably connected to the vehicle body in a variety of ways, such as bolt and nut connection, screw clip connection, or self-tapping screw connection.

[0055] Specifically, in this embodiment, nuts can be integrated on the inner side of a plurality of connection parts, so that when connecting them with the vehicle body, only bolts need to be inserted, thereby improving the connection strength and facilitating installation.

[0056] In one embodiment, at least one of the vehicle body connecting portions 11 is sealingly connected to the vehicle body.

[0057] With such arrangement, the sealed connection can effectively prevent moisture and dust from invading the interior of the side longitudinal beam 2, protect the internal components from being affected by moisture and dirt, and extend the service life of the vehicle.

[0058] It is understandable that the sealed connection can be achieved in a variety of ways, such as adhesive sealing, welding, and providing a gasket or a sealing ring at the connection.

[0059] Specifically, in this embodiment, the sealing performance is improved by applying sealant to the vehicle body connection portion 11 and then driving bolts therein.

[0060] like Figure 1 and 2 As shown, in one embodiment, the vehicle body further includes a positioning pin, and the box body 1 further includes a positioning hole 5, which is arranged on at least one side from the front to the rear of the box body 1 to correspond to the positioning pin.

[0061] Such an arrangement can effectively achieve accurate positioning between the vehicle body and the box body 1, ensuring that the two are aligned and fixed during the installation process. This design can improve the stability and durability of the structure and avoid misalignment or loosening caused by vibration or impact during use. In addition, the cooperation between the positioning pin and the positioning hole 5 can simplify the operation process during assembly, reduce installation errors, and thus improve production efficiency and product quality.

[0062] It is understandable that the positioning pin is usually pre-set on the vehicle body, and it extends from the vehicle body and is used to be inserted into the positioning hole 5 on the box body 1. The positioning hole 5 is set on at least one side from the front to the rear of the box body 1, corresponding to the positioning pin on the vehicle body. The positioning hole 5 can be a through hole or a blind hole. The specific design depends on the form of the positioning pin and the installation requirements. The number and position of the positioning pins can be determined according to the size and weight of the box body 1 and the structural characteristics of the vehicle body.

[0063] It should be noted that due to various factors (such as manufacturing tolerances, the skill level of the installers, etc.), there may be certain installation errors.

[0064] In view of this, in one embodiment, a plurality of positioning pins are provided, and the plurality of positioning pins include at least a first positioning pin and a second positioning pin; a plurality of positioning holes 5 are provided on the box body 1, and the plurality of positioning holes 5 include at least a first positioning hole 515 and a second positioning hole 525, the first positioning hole 515 is used to correspond to the first positioning pin, and the second positioning hole 525 is used to correspond to the second positioning pin; wherein, the first positioning hole 515 includes a circular hole, and the second positioning hole 525 includes an elongated hole, and the size of the elongated hole in the horizontal direction is larger than the size of the circular hole in the horizontal direction, so that when the first positioning pin rotates in the hole of the circular hole, the elongated hole is used for the second positioning pin to move in its hole.

[0065] In this way, the design of the elongated hole allows the second positioning pin to move in the horizontal direction, thereby compensating for these installation errors and ensuring that the box 1 can be accurately installed in the predetermined position to ensure its relative position with the vehicle body is accurate. This design scheme combining the elongated hole with the circular hole not only cleverly solves the error problem that may occur during the installation process, but also significantly improves the flexibility and fault tolerance of the entire installation process.

[0066] In one embodiment, the elongated hole is arranged in a waist shape.

[0067] In this way, the shape of the waist-shaped hole gives it a larger horizontal movement range, which further enhances the fault tolerance during installation. Compared with ordinary rectangular or elliptical long holes, the waist-shaped hole extends more smoothly in the horizontal direction, providing a smoother movement path for the second positioning pin. This helps to reduce the jamming or resistance that may occur during installation and adjustment, so that the box 1 can more easily reach the ideal installation position.

[0068] In one embodiment, the elongated hole is arranged in an arc shape.

[0069] In this way, the arc-shaped design makes the elongated hole extend more smoothly and continuously in the horizontal direction, providing a smoother moving path for the second positioning pin, thereby reducing the jamming, resistance or friction that may occur during the installation and adjustment process, making it easier for the box 1 to reach the ideal installation position, thereby improving the installation efficiency and accuracy.

[0070] The present invention also proposes an electric vehicle, which includes a load-bearing structure 100. The specific structure of the load-bearing structure 100 refers to the above-mentioned embodiment. Since the electric vehicle adopts all the technical solutions of all the above-mentioned embodiments, it has at least all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, which will not be described one by one here.

[0071] The above description is only an exemplary embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the technical concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A load-bearing structure, used to connect with a vehicle body, characterized in that: include: The box body includes an installation space with an opening facing upwards for installing the battery; Two side longitudinal beams are respectively arranged at the side of the box body along the left and right directions, the side longitudinal beams are integrally formed with the box body, each of the side longitudinal beams is provided with a plurality of body connection parts, and the plurality of body connection parts are connected to the body upward; and, A cover plate is arranged on the opening to make the installation space airtight.

2. The bearing structure according to claim 1, characterized in that: The side longitudinal beam and the box body are integrally formed by die casting.

3. The bearing structure according to claim 1, characterized in that: The bearing structure further comprises: The seat cross beam is arranged on the upper side of the cover plate and is integrally formed with the cover plate.

4. The bearing structure according to claim 3, characterized in that: The seat crossbeam is integrally formed with the box body through a die-casting process.

5. The bearing structure according to claim 1, characterized in that: The plurality of vehicle body connecting portions are detachably connected to the vehicle body.

6. The bearing structure according to claim 1, characterized in that: At least one of the vehicle body connecting parts is sealingly connected to the vehicle body.

7. The bearing structure according to claim 1, characterized in that: The vehicle body further includes a positioning pin, and the box body further includes: A positioning hole is arranged on at least one side of the box body from the front to the rear, and is used to correspond to the positioning pin.

8. The bearing structure according to claim 7, characterized in that: The positioning pins are provided in plurality, and the plurality of positioning pins at least include a first positioning pin and a second positioning pin; The box body is provided with a plurality of positioning holes, the plurality of positioning holes at least comprising a first positioning hole and a second positioning hole, the first positioning hole is used to correspond to the first positioning pin, and the second positioning hole is used to correspond to the second positioning pin; wherein, The first positioning hole includes a circular hole, and the second positioning hole includes an elongated hole, wherein the horizontal dimension of the elongated hole is larger than the horizontal dimension of the circular hole, so that when the first positioning pin rotates in the hole of the circular hole, the elongated hole allows the second positioning pin to move in its hole.

9. The bearing structure according to claim 8, characterized in that: The oblong hole is arranged in a waist shape; or, The elongated hole is arranged in an arc shape.

10. An electric vehicle, characterized in that: The invention comprises the bearing structure as claimed in any one of claims 1 to 9.

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