Battery pack mounting structure and vehicle

Abstract

The invention provides a battery pack installation structure and a vehicle. The battery pack installation structure comprises an installation lifting lug arranged on the side portion of a battery pack, a nut plate arranged on a vehicle body edge beam and a connecting bolt which penetrates through the installation lifting lug and then is connected to the nut plate. The installation lifting lug is provided with a first part connected with the battery pack and a second part connected to the outer side of the first part, and the second part is arranged in a downward-inclining mode in the left-right direction of the whole vehicle and in the direction pointing to the outside of the vehicle. The vehicle body edge beam is arranged in a mode of being matched with the second part and abuts against the second part, and the connecting bolt penetrates through the second part and then is connected with the nut plate. According to the battery pack mounting structure, collision energy can be better absorbed when side collision occurs, and the safety of the battery pack can be improved.

Description

Technical Field

[0001] The present invention relates to the technical field of battery pack installation, and in particular to a battery pack installation structure. The present invention also relates to a vehicle provided with the battery pack installation structure. Background Art

[0002] With the rapid development of new energy vehicle technology and the continuous improvement of people's consumption level, new energy vehicles, mainly pure electric and hybrid models, are gradually becoming the mainstream of the automobile market. In the current new energy vehicle models, it is generally necessary to install a battery pack with a certain capacity in the body, and the battery pack in most models is arranged under the front floor of the body to better utilize the body space and avoid affecting the installation of other body parts.

[0003] At present, the battery pack is generally connected to the door sill beams on both sides of the vehicle body by bolts. In order to protect the battery pack when the vehicle is hit sideways, the door sill beams often need to be made stronger and heavier, which not only increases the cost of the vehicle, but also the heavier door sill beams are not conducive to the lightweight design of the vehicle and will affect the improvement of the vehicle's endurance. Therefore, it is particularly important to improve the existing installation method of the battery pack to improve the safety of the battery pack in the event of a side collision. Summary of the invention

[0004] In view of this, the present invention aims to provide a battery pack installation structure to help improve the safety of the battery pack during a side collision.

[0005] To achieve the above object, the technical solution of the present invention is achieved as follows:

[0006] A battery pack mounting structure, comprising a mounting lug disposed on a side of the battery pack, a nut plate disposed on a body side beam, and a connecting bolt passing through the mounting lug and connected to the nut plate;

[0007] The mounting ear has a first portion connected to the battery pack and a second portion connected to the outside of the first portion, and the second portion is arranged to be tilted downward in a direction pointing outward of the vehicle in the left-right direction of the vehicle;

[0008] The vehicle body side beam is adapted to be arranged on the second portion and abuts against the second portion, and the connecting bolt is connected with the nut plate after passing through the second portion.

[0009] Furthermore, in the left-right direction of the whole vehicle, along the direction pointing outward from the vehicle, the first part is arranged to be inclined upward.

[0010] Furthermore, the mounting ear has a plurality of plates arranged at intervals along the up-down direction of the vehicle, and each of the plates extends from the second part to the first part and is connected to the battery pack.

[0011] Furthermore, a reinforcing rib is connected between two adjacent plates, and the reinforcing rib separates a plurality of cavities between the two adjacent plates.

[0012] Furthermore, the side of the battery pack has a side beam, the mounting lug is connected to the side beam, and the mounting lug and the side beam are extruded integrally.

[0013] Furthermore, the inside of the side beam is hollow, and a plurality of spaced-apart reinforcing ribs are provided inside the side beam, and from the cross-section of the side beam and the mounting ears, one of the reinforcing ribs is arranged along an extension line of one of the plate bodies.

[0014] Furthermore, along the direction pointing to the second part, the thickness of the first part along the up-down direction of the whole vehicle is gradually set to be smaller, and along the direction pointing to the first part, the thickness of the second part along the up-down direction of the whole vehicle is gradually set to be larger.

[0015] Further, the nut plate has a bottom plate and welding nuts arranged on the bottom plate, and the body side beam is provided with mounting holes arranged corresponding to the nut holes of the welding nuts;

[0016] The mounting through hole is a long hole extending in the left-right direction of the vehicle, the bottom plate is connected to a crush plate via a deformable connecting portion, and the welding nut is connected to the crush plate;

[0017] When the connecting portion is deformed, the welding nut can move relative to the bottom plate along the length direction of the mounting through hole.

[0018] Furthermore, the bottom plate is provided with a through hole, and the collapse plate is located in the through hole;

[0019] The collapse plate is located at two ends of the mounting through hole in the length direction, one end of which is connected to the bottom plate through the connecting portion, and a compression deformation space is formed between the other end and the inner wall of the through hole.

[0020] Furthermore, one side of the through hole forms an opening extending to the outside of the bottom plate, and the connecting portion is located at the opening and is two connecting portions arranged opposite to each other at the opening;

[0021] Each of the connecting parts is connected to the bottom plate through a connecting arm, and in the front-rear direction of the vehicle, there is a gap between the front and rear sides of the crush plate and the inner wall of the through hole, and the gaps on both sides are connected to the crushing deformation space.

[0022] Furthermore, the connecting portion adopts a curved connecting plate.

[0023] Compared with the prior art, the present invention has the following advantages:

[0024] The battery pack mounting structure described in the present invention is such that the mounting ear on the side has a first part and a second part that are connected, and the second part is arranged to be inclined downward, and the body side beam is adapted to the second part. Therefore, the inclined design of the second part in the mounting ear can not only fully crush the mounting ear in the event of a side collision to better absorb the collision energy, but also cause the battery pack to slide downward in the event of a side collision to prevent the battery pack from being squeezed and collided by the body structure, thereby helping to improve the safety of the battery pack in the event of a side collision.

[0025] In addition, the upward inclination of the first part can be matched with the downward inclination design of the second part, so that the overall installation ear has a better crushing energy absorption effect. The installation ear has multiple plates arranged at intervals up and down, and each plate extends all the way to connect with the battery pack, so that each plate can form a force transmission channel along the Y direction of the whole vehicle, which helps to disperse the collision force to the battery pack frame, so as to reduce the impact damage caused by the collision while crushing and absorbing energy. Reinforcing ribs are set between adjacent plates, and the cavities are separated by the reinforcing ribs, which can increase the structural strength of the installation ear, ensure the reliability of the battery pack installation, and improve the energy absorption capacity of the installation ear when it is crushed.

[0026] Secondly, the mounting lugs and the side beams on the sides of the battery pack are extruded in one piece, which can facilitate the preparation of the mounting lugs and the connection with the battery pack, and can also ensure the structural strength of the mounting lugs themselves and the connection strength between them and the battery pack. The setting of the internal reinforcing ribs of the side beams can further increase the structural strength of the side beams and the structural safety of the battery pack. One of the reinforcing ribs is arranged along the extension line of the plate body, which is conducive to the continuity of the collision force transmission channel formed between the plate body and the side beams, and can improve the transmission and dispersion effect of the collision force at the side beams.

[0027] The thickness of the first part gradually decreases along the direction pointing to the second part, and the thickness of the second part gradually increases along the direction pointing to the first part, which is beneficial to the bending of the mounting lugs during a side collision, so as to better achieve crushing energy absorption. The nut plate is composed of a base plate and a welding nut, so that the mounting holes are long strips arranged along the left and right directions of the vehicle, and the welding nuts can move relative to the base plate along the length direction of the mounting holes, so that the battery pack mounting point can be crushed and displaced when a side collision occurs, which is beneficial to reduce the collision impact on the battery pack and improve the safety of the battery pack.

[0028] In addition, the crush plate is arranged in the through hole on the bottom plate, and one end of the crush plate is connected to the bottom plate through a connecting portion, and a crush deformation space is formed at the other end, which helps to simplify the nut plate structure and can limit the moving distance of the welded nut, thereby ensuring the use effect of the nut plate when it collapses. The two connecting portions are relatively arranged at the opening, which can ensure the reliability of the connection between the crush plate and the bottom plate. Through the setting of the connecting arm, a gap is provided between the front and rear sides of the crush plate and the inner wall of the through hole, which is not only conducive to the Y-direction movement of the crush plate, but also has a certain movement ability in the X-direction, which helps to improve the safety of the battery pack in the event of a head-on collision or a rear-end collision. The connecting portion adopts a curved connecting plate, which has a simple structure, is easy to prepare and form, and has a good crush deformation effect.

[0029] Another object of the present invention is to provide a vehicle, in which the battery pack installation structure as described above is provided.

[0030] The vehicle described in the present invention has the same beneficial effects as the above-mentioned battery pack installation structure, which will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the accompanying drawings:

[0032] Figure 1 This is a schematic diagram of the application of the battery pack installation structure according to an embodiment of the present invention;

[0033] Figure 2 for Figure 1 Cross-sectional view at the AA position;

[0034] Figure 3 It is a schematic diagram of the arrangement of the mounting lugs according to an embodiment of the present invention;

[0035] Figure 4 for Figure 2 Cross-section view at the mid-BB position;

[0036] Figure 5 It is a schematic diagram of the structure of the mounting lug and the side beam according to an embodiment of the present invention;

[0037] Figure 6 It is a schematic diagram of the arrangement of the nut plate according to an embodiment of the present invention;

[0038] Figure 7 for Figure 6 A partial enlarged view of part C in the middle;

[0039] Figure 8 It is a structural schematic diagram of a nut plate according to an embodiment of the present invention;

[0040] Fig. 9 This is a schematic diagram of the structure of the bottom plate according to an embodiment of the present invention;

[0041] Description of reference numerals:

[0042] 1. Battery pack; 2. Mounting lugs; 3. Car body side beam; 4. Nut plate; 5. Mounting sleeve; 6. Connecting bolts;

[0043] 101, side beam; 101a, first reinforcing rib; 101b, second reinforcing rib; 201, first part; 202, second part; 2a, plate body; 2b, reinforcing rib; 3a, mounting hole; 401, bottom plate; 401a, crush plate; 401b, connecting part; 401c, through hole; 401d, connecting arm; 402, welding nut; 402a, nut hole;

[0044] e, gap; t, crush deformation zone; K, opening; Q, cavity. DETAILED DESCRIPTION

[0045] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other.

[0046] In the description of the present invention, it should be noted that if there are terms indicating orientation or positional relationship such as "upper", "lower", "inner", "outer", etc., they are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention 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 limiting the present invention. In addition, if there are terms such as "first", "second", etc., they are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0047] In addition, in the description of the present invention, unless otherwise clearly defined, the mating parts may be connected by conventional connection structures in the art. Moreover, the terms "installation", "connection", "connection" and "connector" 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 an indirect connection through an intermediate medium, or it can be a communication between the two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood in combination with specific circumstances.

[0048] The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0049] Embodiment 1

[0050] This embodiment relates to a battery pack installation structure, combined with Figure 1 and Figure 2 As shown in the figure, in terms of overall structure, the battery pack mounting structure includes a mounting ear 2 arranged on the side of the battery pack 1, a nut plate 4 arranged on the body side beam 3, and a connecting bolt 6 that passes through the mounting ear 2 and is connected to the nut plate 4.

[0051] Among them, the mounting ear 2 has a first part 201 connected to the battery pack 1, and a second part 202 connected to the outside of the first part 201. At this time, the outside of the above-mentioned first part 201, that is, along the left-right direction of the whole vehicle, the side of the first part 201 close to the outside of the vehicle. In addition, in this embodiment, still in the left-right direction of the whole vehicle, along the direction pointing to the outside of the vehicle, the second part 202 is also set to be tilted downward. The body side beam 3 is adapted to the above-mentioned second part 202 and abuts against the second part 202. At the same time, the above-mentioned connecting bolt 6 is also specifically passed through the second part 202 and connected to the nut plate 4.

[0052] As described above, the mounting ear 2 on the side of the battery pack 1 has a first part 201 and a second part 202 connected, and the second part 202 is arranged to be tilted downward, and the body side beam 3 is adapted to be arranged to be arranged to be in the second part 202. In this way, the present embodiment utilizes the tilted design of the second part 202 in the mounting ear 2, so that the mounting ear 2 can be fully crushed in a side collision to better absorb the collision energy, and at the same time, in a side collision, the battery pack 1 can slide downward to prevent the battery pack 1 from being squeezed and collided by the body structure, so as to improve the safety of the battery pack 1.

[0053] Based on the above overall introduction, specifically, in the vehicle body, the body side beam 3 generally refers to the door sill beams on the left and right sides of the middle part of the vehicle body, which is also the left and right sides of the battery pack 1 installed on the door sill beams through the mounting ears 2. At the same time, since the installation method of the left and right sides of the battery pack 1 is generally the same, the present embodiment will also be specifically described by taking the mounting ears 2 on one side as an example.

[0054] As a preferred implementation form, continue to combine Figures 3 to 5 As shown in , in this embodiment, in the left-right direction of the vehicle, in the direction pointing outward from the vehicle, the first part 201 is also arranged upwardly inclined. At this time, by making the first part 201 arranged upwardly inclined, it can be matched with the downwardly inclined design of the second part 202, so that the mounting eye 2 as a whole has a better crushing energy absorption effect.

[0055] In this embodiment, in terms of specific structure, as a preferred implementation form, still refer to Figure 5 As shown, the mounting ear 2 also has a plurality of plates 2a spaced apart in the vertical direction of the vehicle, and each plate 2a extends from the second portion 202 to the first portion 201 and is connected to the battery pack 1 .

[0056] At this point, it can be understood that the mounting ear 2 has multiple plates 2a spaced apart from each other, and each plate 2a extends until it is connected to the battery pack 1, so that each plate 2a can form a force transmission channel along the Y direction of the vehicle (i.e. the left and right direction of the vehicle), thereby facilitating the transmission and dispersion of the collision force to the frame of the battery pack 1, so as to reduce the impact damage caused by the collision while crushing and absorbing energy. When a side collision occurs, the transmission of the collision force by the force transmission channel formed by each plate 2a in the mounting ear 2 can be seen again in Figure 5 shown.

[0057] On the basis of the plurality of spaced plates 2a in the mounting ear 2, as a preferred implementation form, the present embodiment also has a reinforcing rib 2b connected between two adjacent plates 2a, and the reinforcing rib 2b separates a plurality of cavities Q between two adjacent plates 2a. At this time, by providing reinforcing ribs 2b between adjacent plates 2a and separating the cavities Q by the reinforcing ribs 2b, it is obvious that the structural strength of the mounting ear 2 can be increased to ensure the reliability of the installation of the battery pack 1. At the same time, it can be understood that by utilizing the improvement of the structural strength of the mounting ear 2, of course, it can also improve the energy absorption capacity of the mounting ear 2 when it is crushed, so as to better absorb the collision energy and reduce the collision impact on the battery pack 2.

[0058] In this embodiment, the mounting lug 2 can be formed by machining or casting, and can be connected to the side of the battery pack 1 by screwing, welding, etc. However, in the specific implementation, as a preferred implementation form, the side of the battery pack 1 of this embodiment has a side beam 101, and the mounting lug 2 is specifically connected to the side beam 101, and the mounting lug 2 and the side beam 101 on the same side are also made of aluminum alloy and are extruded as a whole.

[0059] In this way, the mounting ears 2 on each side are extruded integrally with the side beams 101 on the sides of the battery pack 1, which can facilitate the preparation of the mounting ears 2 and the connection with the battery pack 1, and can also ensure the structural strength of the mounting ears 2 themselves and the connection strength between them and the battery pack 1.

[0060] In addition, based on the extrusion molding, the side beam 101 of this embodiment is hollow inside, and as a preferred implementation form, a plurality of spaced reinforcing ribs are also arranged inside the side beam 101. The above-mentioned reinforcing ribs can be spaced along the vertical direction of the vehicle, and further, from the cross-section of the side beam 101 and the mounting lug 2, in this embodiment, one of the reinforcing ribs can be arranged along the extension line of one of the plate bodies 2a.

[0061] It can be understood that by setting various reinforcing ribs inside the side beam 101, the structural strength of the side beam 101 can be further increased, and the structural safety of the battery pack 1 can be increased. Similarly, arranging one of the reinforcing ribs along the extension line of the plate body 2a is also beneficial to the continuity of the collision force transmission channel formed between the plate body 2a and the side beam 101, thereby enhancing the transmission and dispersion effect of the collision force at the side beam 101.

[0062] In a specific implementation, the number of reinforcing ribs inside the side beam 101 can be, for example, two, and they are respectively referred to as the first reinforcing rib 101a and the second reinforcing rib 101b. At the same time, the number of plates 2a in the mounting lug 2 can also be specifically three arranged in an upper and lower interval. Figure 5 As shown, they are arranged along the extension line of the plate body 2 a in the middle to form a through force transmission channel between the mounting lugs 2 and the side beams 101 .

[0063] Of course, in addition to the above-mentioned arrangement of the middle plate 2a and the first reinforcing rib 101a, in the specific implementation of this embodiment, for the bottom plate 2a, the side connected to the side beam 101 can be arranged close to the second reinforcing rib 101b. For the top plate 2a, it can be connected to the top of the side beam 101, which can also better improve the collision force transmission effect between the mounting ear 2 and the side beam 101.

[0064] In this embodiment, Figure 4 and Figure 5 As shown, as a preferred implementation form, along the direction pointing to the second part 202, the thickness of the first part 201 along the vertical direction of the whole vehicle is gradually set to be smaller, and along the direction pointing to the first part 201, the thickness of the second part 202 along the vertical direction of the whole vehicle is gradually set to be larger.

[0065] In this way, the thickness of the first part 201 gradually decreases along the direction pointing to the second part 202, and the thickness of the second part 202 gradually increases along the direction pointing to the first part 201, which means that the cross-sectional thickness of the middle position between the connection point between the mounting ear 2 and the body side beam 3 and the root of the mounting ear 2 is smaller, so as to guide the mounting ear to bend during a side collision, and to facilitate the mounting ear 2 to produce a collapse, so as to better achieve crushing energy absorption.

[0066] In this embodiment, since the mounting lug 2 is made of extruded aluminum, Figure 3 As shown, in order to facilitate the connection of the mounting ear 2 with the nut plate 4 on the body side beam 3 through the connecting bolt 6, in specific implementation, a mounting sleeve 5 can also be provided on the mounting ear 2. The mounting sleeve 5 is inserted into the mounting ear 2 and can be fixedly connected to the mounting ear 2 by welding. When the battery pack 1 is assembled, the connecting bolt 6 passes through the mounting sleeve 5 and is then screwed to the nut plate 4.

[0067] Continue to see Figures 6 to 9 As shown in , as a preferred implementation form, the nut plate 4 of this embodiment has a bottom plate 401 and a welding nut 402 arranged on the bottom plate 401, and a mounting hole 3a corresponding to the nut hole 402a of the welding nut 402 is also arranged on the body side beam 3. The mounting hole 3a is specifically a long hole extending in the left-right direction of the whole vehicle. At the same time, the bottom plate 401 is also connected to the crush plate 401a through a deformable connecting portion 401b. The above-mentioned welding nut 402 is connected to the crush plate 401a, and when the connecting portion 401b is deformed, the welding nut 402 can move relative to the bottom plate 401 along the length direction of the mounting hole 3a.

[0068] At this time, by making the nut plate 4 composed of the base plate 401 and the welding nut 402, the mounting hole 3a is in the shape of a long strip arranged along the left-right direction of the vehicle, and the welding nut 402 can be moved relative to the base plate 401 along the length direction of the mounting hole 3a, so that when a side collision occurs, the installation point of the battery pack 1 can be collapsed and displaced, which is beneficial to reduce the collision impact on the battery pack 1 and improve the safety of the battery pack 1.

[0069] In detail, for the nut plate 4, the bottom plate 401 can be preferably connected to the body side beam 3 by spot welding, and as an exemplary structural form, a through hole 401c is provided on the bottom plate 401 in this embodiment, and the above-mentioned crush plate 401a is located in the above-mentioned through hole 401c. The crush plate 401a is located at the two ends in the length direction of the installation hole 3a (i.e., the left and right direction of the whole vehicle), one end of which is connected to the bottom plate 401 through the connecting portion 401b, and the other end forms a crush deformation zone t with the inner wall of the through hole 401c.

[0070] It can be understood that the crush plate 401a is set in the through hole 401c on the base plate 401, and one end of the crush plate 401a is connected to the base plate 401 through the connecting portion 401b, and the other end forms a crush deformation zone t, which helps to simplify the structure of the nut plate 4 and can limit the movement distance of the crush plate 401a with the welding nut 402, thereby ensuring the use effect of the nut plate 4 when it collapses.

[0071] In this embodiment, as a preferred implementation form, still combined with Fig. 9As shown, one side of the through hole 401c also forms an opening K that penetrates to the outside of the bottom plate 401, and the connecting portion 401b is located at the opening K, and the connecting portion 401b is specifically two connected to each other at the opening K. In addition, each connecting portion 401b of this embodiment is also connected to the bottom plate 401 through a connecting arm 401d, and in the front-to-back direction of the vehicle, there is a gap e between the front and rear sides of the crush plate 401a and the inner wall of the through hole 401c. Moreover, the gaps e on both sides are connected to the crush deformation space t.

[0072] At this time, the two connecting parts 401b are arranged relatively at the opening K, which can ensure the reliability of the connection between the crush plate 401a and the bottom plate 401. By setting the connecting arm 401d, a gap e is provided between the front and rear sides of the crush plate 401a and the inner wall of the through hole 401c. This embodiment is not only conducive to the movement of the crush plate 401a in the Y direction (left and right direction of the whole vehicle), but also has a certain mobility in the X direction (front and rear direction of the whole vehicle), thereby helping to improve the safety of the battery pack 1 in the event of a head-on collision or a rear-end collision.

[0073] It is worth noting that, in the specific implementation, the connection portion 401b of this embodiment can be, for example, a curved connection plate. In the natural state, the connection plate is curved, and the arrangement of the crush plate 401a in the bottom plate 401 is realized. When the vehicle is hit sideways, the body side beam 3 is subjected to force, and the collision force is transmitted to the crush plate 401a via the connection bolt 6 connected to the welding nut 402. Then, the crush plate 401a pulls the connection portion 401b, so that the curved connection portion 401b can be deformed, and at the same time, the crush plate 401a compresses the above-mentioned crush deformation zone t, thereby realizing the crushing function of the installation point of the battery pack 1.

[0074] It is understandable that in this embodiment, the connection part 401b adopts a curved connection plate, which not only has the advantages of simple structure and easy preparation and molding, but also has a good crush deformation effect. Moreover, in specific implementation, of course, in addition to using a curved connection plate located at the opening K, the connection part 401b can also be set at other positions, for example, the connection part 401b consisting of a curved connection plate is respectively set at the gap e on the front and rear sides of the crush plate 401a, which is also possible.

[0075] The battery pack mounting structure of the present embodiment has a side mounting ear 2 with a first part 201 and a second part 202 connected, and the second part 202 is arranged to be tilted downward, and the body side beam 3 is adapted to the second part 202. The tilted design of the second part 202 in the mounting ear 2 can not only fully crush the mounting ear 2 in the event of a side collision to better absorb the collision energy, but also can cause the battery pack 1 to slide downward in the event of a side collision, thereby preventing the battery pack 1 from being squeezed and collided by the body structure, which is beneficial to improving the safety of the battery pack 1 in the event of a side collision.

[0076] But still Figure 4 As shown in the figure, when the vehicle has a side collision, the decomposition force of the side impact force F along the normal direction of the mounting surface of the mounting ear 2 is F2, and the component force F2 generates a torque with a lever arm L around the root of the mounting ear 2, thereby causing the mounting ear 2 on the side of the battery pack 1 to deform and collapse to absorb the collision energy, thereby reducing the damage to the internal structure of the battery pack 1 and the like caused by the side collision, thereby improving the safety of the battery pack 1.

[0077] Embodiment 2

[0078] This embodiment relates to a vehicle, in which the battery pack installation structure of the first embodiment is provided. The vehicle of this embodiment adopts the battery pack installation structure of the first embodiment, which can better absorb the collision energy in the event of a side collision, and can also prevent the battery pack 1 from being squeezed and collided by the vehicle body structure in the event of a side collision, thereby improving the collision safety of the battery pack 1 and having good practicality.

[0079] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A battery pack installation structure, characterized in that: It comprises a mounting lug (2) arranged on the side of a battery pack (1), a nut plate (4) arranged on a vehicle body side beam (3), and a connecting bolt (6) passing through the mounting lug (2) and connected to the nut plate (4); The mounting ear (2) comprises a first portion (201) connected to the battery pack (1), and a second portion (202) connected to the outside of the first portion (201), and the second portion (202) is arranged to be tilted downward in a direction pointing outward from the vehicle in the left-right direction of the vehicle; The vehicle body side beam (3) is adapted to be arranged on the second part (202) and abuts against the second part (202), and the connecting bolt (6) is connected to the nut plate (4) after passing through the second part (202).

2. The battery pack installation structure according to claim 1, characterized in that: In the left-right direction of the whole vehicle, along the direction pointing outward from the vehicle, the first part (201) is arranged to be inclined upward.

3. The battery pack installation structure according to claim 1, characterized in that: The mounting lug (2) comprises a plurality of plates (2a) arranged at intervals along the vertical direction of the vehicle, each of the plates (2a) extending from the second part (202) to the first part (201) and connected to the battery pack (1).

4. The battery pack installation structure according to claim 3, characterized in that: A reinforcing rib (2b) is connected between two adjacent plate bodies (2a), and the reinforcing rib (2b) separates a plurality of cavities (Q) between the two adjacent plate bodies (2a).

5. The battery pack installation structure according to claim 3, characterized in that: The side of the battery pack (1) has a side beam (101), the mounting lug (2) is connected to the side beam (101), and the mounting lug (2) and the side beam (101) are integrally extruded.

6. The battery pack installation structure according to claim 5, characterized in that: The side beam (101) is hollow inside, and a plurality of spaced-apart reinforcing ribs are provided inside the side beam (101). In addition, from the cross-section of the side beam (101) and the mounting lug (2), one of the reinforcing ribs is arranged along an extension line of one of the plate bodies (2a).

7. The battery pack installation structure according to claim 1, characterized in that: Along the direction pointing to the second part (202), the thickness of the first part (201) along the vertical direction of the whole vehicle is gradually reduced, and along the direction pointing to the first part (201), the thickness of the second part (202) along the vertical direction of the whole vehicle is gradually increased.

8. The battery pack installation structure according to any one of claims 1 to 7, characterized in that: The nut plate (4) comprises a bottom plate (401) and a welding nut (402) arranged on the bottom plate (401), and the vehicle body side beam (3) is provided with a mounting through hole (3a) arranged corresponding to a nut hole (402a) of the welding nut (402); The mounting through hole (3a) is a long hole extending in the left-right direction of the vehicle, the bottom plate (401) is connected to a crush plate (401a) via a deformable connecting portion (401b), and the welding nut (402) is connected to the crush plate (401a); When the connecting portion (401b) is deformed, the welding nut (402) can move relative to the bottom plate (401) along the length direction of the mounting through hole (3a).

9. The battery pack installation structure according to claim 8, characterized in that: The bottom plate (401) is provided with a through hole (401c), and the collapse plate (401a) is located in the through hole (401c); The collapse plate (401a) is located at two ends of the mounting hole (3a) in the length direction, one end of which is connected to the bottom plate (401) through the connecting portion (401b), and a collapse deformation space (t) is formed between the other end and the inner wall of the through hole (401c).

10. The battery pack installation structure according to claim 9, characterized in that: An opening (K) is formed on one side of the through hole (401c) and extends to the outside of the bottom plate (401); the connecting parts (401b) are located at the opening (K) and are two connecting parts arranged opposite to each other at the opening (K); Each of the connecting parts (401b) is connected to the bottom plate (401) via a connecting arm (401d), and in the front-rear direction of the vehicle, there is a gap (e) between the front and rear sides of the crush plate (401a) and the inner wall of the through hole (401c), and the gaps (e) on both sides are connected to the crush deformation space (t).

11. The battery pack installation structure according to claim 9, characterized in that: The connecting portion (401b) is a curved connecting plate.

12. A vehicle, characterized in that: The vehicle is provided with the battery pack mounting structure according to any one of claims 1 to 11.

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