Battery pack assembly mounting structure and vehicle

Abstract

The utility model provides a battery pack assembly mounting structure and a vehicle, the battery pack assembly mounting structure comprises a front cabin assembly and a front floor assembly connected to the rear side of the front cabin assembly, a battery pack mounting space capable of accommodating the battery pack assembly is formed below the front floor assembly, and a seat mounting space is formed above the front floor assembly; side connecting positions connected with the corresponding side parts of the battery pack assembly are respectively formed on the left side and the right side of the front floor assembly; the battery pack assembly mounting structure further comprises a first force transmission beam extending front and back, the first force transmission beam is connected to the front cabin assembly, and a front connecting position connected with the front portion of the battery pack assembly is formed at the rear end of the first force transmission beam. The connection point positions of the first force transmission beam and the battery pack assembly are increased, so that the frame structure at the bottom of the vehicle body is reinforced, and the situation that the weight of the vehicle body is increased too much due to excessive increase of reinforcing structures is avoided; the first force transmission beam does not occupy the installation space of the battery pack, the size of the battery pack assembly is not compressed, and the endurance of the whole vehicle is not affected.

Description

Technical Field

[0001] The utility model belongs to the technical field of vehicle components, and particularly relates to an installation structure of a battery pack assembly and a vehicle. Background Art

[0002] With the long-term development of automotive technology, the requirements for vehicle safety are also getting higher and higher. The strengthening of the body structure is crucial for safety. Currently, the improvement of structural strength is mainly achieved by adding strengthening members, which generally leads to problems such as increased body weight and energy consumption. For new energy vehicles, traditional strengthening means will not only affect the cruising range due to weight gain, but also the increase in the strengthening structure arranged on the body bottom frame will occupy the installation space of the battery pack, further enhancing the negative impact on the cruising range. Summary of the Utility Model

[0003] An embodiment of the utility model provides an installation structure of a battery pack assembly and a vehicle, aiming to solve the problems that traditional body strengthening means will cause excessive body weight gain and occupy the installation space of the battery pack.

[0004] To achieve the above object, the technical solution adopted by the utility model is as follows:

[0005] In a first aspect, an embodiment of the utility model provides an installation structure of a battery pack assembly, including:

[0006] A front engine compartment assembly, and a front floor assembly connected to the rear side of the front engine compartment assembly, and a battery pack installation space capable of accommodating the battery pack assembly is formed below the front floor assembly;

[0007] Left and right sides of the front floor assembly respectively form side connection positions connected to corresponding side parts of the battery pack assembly;

[0008] The installation structure of the battery pack assembly further includes a first force transmission beam extending in the front-rear direction, the first force transmission beam is connected to the front engine compartment assembly, and a front connection position connected to the front part of the battery pack assembly is formed at the rear end.

[0009] Combined with the first aspect, in a possible implementation manner, the installation structure of the battery pack assembly further includes a second force transmission beam extending in the front-rear direction, the front part of the second force transmission beam is connected to the front engine compartment assembly, and the rear part is connected to the front floor assembly, and the second force transmission beam forms the side connection position.

[0010] Combined with the first aspect, in a possible implementation manner, a rear connection position connected to the rear part of the battery pack assembly is further formed at the rear side of the front floor assembly.

[0011] In some embodiments, there are two sets of the front connection positions, the two sets of the front connection positions are symmetrically distributed left and right, and the distance between the two sets of the front connection positions is D1;

[0012] There are two sets of the rear connection positions, the two sets of the rear connection positions are symmetrically distributed left and right, and the distance between the two sets of the rear connection positions is D2, and D2 < D1.

[0013] In some embodiments, there are two first force transmission beams, and they are symmetrically distributed left and right. There are two second force transmission beams, and they are symmetrically distributed left and right;

[0014] The second force transmission beam is located between the first force transmission beam and the edge of the corresponding side of the front floor assembly. There is a front mounting longitudinal beam on the lower side of the front engine compartment assembly, and there is a front floor upper longitudinal beam on the upper side of the front floor assembly. The front mounting longitudinal beam and the front floor upper longitudinal beam are butt-jointed up and down to form the first force transmission beam with a closed inner cavity, and the rear end of the front mounting longitudinal beam forms the front connection position.

[0015] In some embodiments, the front mounting longitudinal beam is a concave beam body, and the front mounting longitudinal beam protrudes backward from the front engine compartment assembly, and the protruding area of the front mounting longitudinal beam is in fit connection with the lower side surface of the front floor assembly;

[0016] The front floor upper longitudinal beam is a convex beam body, and the front end of the front floor upper longitudinal beam protrudes forward from the front floor assembly, and the protruding area of the front floor upper longitudinal beam is in fit connection with the upper side surface of the front engine compartment assembly.

[0017] In some embodiments, the rear end of the front floor upper longitudinal beam extends to the middle of the front floor assembly.

[0018] In some embodiments, there is a front connection longitudinal beam on the lower side of the front engine compartment assembly, and there is a front floor longitudinal beam on the lower side of the front floor assembly. The rear end of the front connection longitudinal beam is connected to the front end of the front floor longitudinal beam to form the second force transmission beam with a closed inner cavity, and the front floor longitudinal beam forms the side connection position.

[0019] In some embodiments, the battery pack assembly mounting structure further includes a third force transmission beam, the third force transmission beam is arranged on the front floor assembly and extends in the front-rear direction, and the rear end of the third force transmission beam forms the rear connection position.

[0020] The solution shown in the embodiments of the present application, compared with the prior art, forms a side connection position at the side between the battery pack assembly and the front floor assembly, and a front connection position at the front between the battery pack assembly and the front engine compartment assembly. There are more connection points, and the bonding strength between the battery pack assembly and the vehicle body is higher, which is beneficial to improving the overall structural strength. Since the connection points between the battery pack assembly and the vehicle body cover the front and side of the battery pack assembly, it can better withstand the frontal collision force and the side collision force. Due to the provision of the first force transmission beam, a force transmission path is formed between the front engine compartment assembly and the battery pack assembly. When a frontal collision occurs, the force received by the front engine compartment assembly can not only directly transmit the force to the front floor assembly, but also be transmitted to the battery pack assembly through the first force transmission beam, and the internal structure of the battery pack assembly is used to resist and absorb the collision energy, reducing the deformation and sheet metal tearing degree of the longitudinal beam member in the front engine compartment assembly, reducing the deformation amount of the front engine compartment assembly, improving the problem that the deformation amount of the front engine compartment is too large and too much occupation of the occupant compartment space causes injury to the front row occupants, and improving safety.

[0021] Generally speaking, the present application realizes the strengthening of the bottom frame structure of the vehicle body by increasing the connection points between the first force transmission beam and the battery pack assembly, and at the same time avoids the problem of excessive vehicle body weight increase caused by adding too many strengthening structures. In addition, since the first force transmission beam is located on the front side of the battery pack assembly, it does not occupy the battery pack installation space, the volume of the battery pack assembly is not compressed, avoiding the problem of overall power reduction of the battery pack assembly caused by adding strengthening structures, and does not affect the vehicle range.

[0022] In a second aspect, an embodiment of the present invention further provides a vehicle, including the above-mentioned battery pack assembly installation structure.

[0023] The solution shown in the embodiments of the present application, compared with the prior art, realizes the strengthening of the bottom frame structure of the vehicle body by adopting the above-mentioned battery pack assembly installation structure, and at the same time avoids the problem of excessive vehicle body weight increase caused by adding too many strengthening structures, does not increase the vehicle energy consumption. At the same time, the structural optimization of the present application does not occupy the battery pack installation space, the volume of the battery pack assembly is not compressed, avoiding the problem of overall power reduction of the battery pack assembly caused by adding strengthening structures, and does not affect the vehicle range performance, which is beneficial to improving the use quality of the whole vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is the assembly bottom view of the battery pack assembly installation structure and the battery pack assembly provided by Embodiment 1 of the present invention;

[0025] Figure 2 It is the exploded view of the battery pack assembly installation structure provided by Embodiment 1 of the present invention;

[0026] Figure 3 It is the bottom view of the battery pack assembly installation structure provided by Embodiment 2 of the present invention;

[0027] Figure 4 is Figure 3 the B-B sectional view of;

[0028] Figure 5 is the top view of the battery pack assembly installation structure provided in the second embodiment of the present utility model;

[0029] Figure 6 is Figure 1 the A-A sectional view of;

[0030] Figure 7 is Figure 3 the distribution schematic diagram of the front connection position and the rear connection position in;

[0031] Explanation of reference numerals:

[0032] 1. Front engine compartment assembly; 2. Front floor assembly; 210. Seat installation cross beam; 220. Middle plate of front floor; 230. Side plate of front floor; 3. Side connection position; 4. First force transmission beam; 410. Front installation longitudinal beam; 420. Upper longitudinal beam of front floor; 5. Front connection position; 6. Second force transmission beam; 610. Front connection longitudinal beam; 620. Front floor longitudinal beam; 7. Rear connection position; 8. Third force transmission beam; 9. Battery pack assembly; 910. Battery pack main body; 920. Installation frame; 10. Connection component; 1010. Installation seat; 1020. Fastener; 11. Connection seat. Specific embodiments

[0033] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present utility model clearer and more understandable, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0034] In the claims, the description and the above-mentioned accompanying drawings of the present utility model, unless otherwise clearly defined, when using terms such as "first", "second" or "third", etc., are all used to distinguish different objects and are not used to describe a specific order.

[0035] In the claims, the description and the above-mentioned drawings of the present utility model, the terms "upper" and "lower" are in the same directions as the up and down directions of the vehicle body, the terms "front" and "back" are in the same directions as the front and back directions of the vehicle body, and the terms "left" and "right" are in the same directions as the left and right directions of the vehicle body. Unless otherwise clearly defined, for the orientation terms, such as the use of terms "center", "lateral", "longitudinal", "horizontal", "vertical", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "high", "low", etc. to indicate the orientation or position relationship are based on the orientation and position relationship shown in the 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 or be constructed and operated in a specific orientation, so it should not be construed as limiting the specific protection scope of the present utility model.

[0036] In the claims, the description and the above-mentioned drawings of the present utility model, unless otherwise clearly defined, if the terms "fixed connection" or "fixedly connected" are used, they should be understood in a broad sense, that is, any connection method without displacement relationship and relative rotation relationship between the two, that is, including non-removable fixed connection, removable fixed connection, being integrally formed, and being fixedly connected through other devices or elements.

[0037] In the claims, the description and the above-mentioned drawings of the present utility model, if the terms "comprising", "having" and their variants are used, are intended to mean "including but not limited to".

[0038] In the claims, the description and the above-mentioned drawings of the present utility model, if the term "fitting connection" is used, its implementation manners include but are not limited to fitting welding, connecting through a threaded connection assembly after fitting, etc.

[0039] Please refer to Figures 1 to 5 , and now the battery pack assembly installation structure provided by the present utility model will be described. The battery pack assembly installation structure includes a front engine compartment assembly 1, and a front floor assembly 2 connected to the rear side of the front engine compartment assembly 1. A battery pack installation space capable of accommodating a battery pack assembly 9 is formed below the front floor assembly 2, and a seat installation space is formed above; side connection positions 3 connected to the corresponding side parts of the battery pack assembly 9 are respectively formed on the left and right sides of the front floor assembly 2; the battery pack assembly installation structure further includes a first force transmission beam 4 extending in the front-back direction, and the first force transmission beam 4 is connected to the front engine compartment assembly 1, and a front connection position 5 connected to the front part of the battery pack assembly 9 is formed at the rear end.

[0040] In this embodiment, the number of the front connection positions 5 can be one. In this case, it is advisable to set the front connection position 5 to coincide with the front-back central axis of the front floor assembly 2 to ensure the uniformity of force. The number of the front connection positions 5 can also be multiple, and the distribution methods are exemplified as follows: 1) The front connection positions 5 are arranged in multiple rows in the front-back direction, and each row is provided with multiple front connection positions 5 distributed in the left-right direction; 2) The multiple front connection positions 5 are arranged in a row in the left-right direction. For the method 2), on the premise of ensuring a relatively large number of connection points and reliable connection, it can also minimize the occupation of the front-back space and avoid the arrangement of other components below the front engine compartment assembly 1 being affected by the setting of the front connection positions 5.

[0041] Compared with the prior art, for the battery pack assembly installation structure provided in this embodiment, a side connection position 3 located on the side is formed between the battery pack assembly 9 and the front floor assembly 2, and a front connection position 5 located in the front is formed between the battery pack assembly 9 and the front engine compartment assembly 1. Since there are relatively many connection points, the bonding strength between the battery pack assembly 9 and the vehicle body is relatively high, which is beneficial to improving the overall structural strength; since the connection points between the battery pack assembly 9 and the vehicle body cover the front and side of the battery pack assembly 9, it can bear the front collision force and the side collision force well; since the first force transmission beam 4 is provided, a force transmission path is formed between the front engine compartment assembly 1 and the battery pack assembly 9. When a frontal collision occurs, the force received by the front engine compartment assembly 1 can not only be directly transmitted to the front floor assembly 2, but also be transmitted to the battery pack assembly 9 through the first force transmission beam 4, and the internal structure of the battery pack assembly 9 is used to resist and absorb the collision energy, reducing the deformation and sheet metal tearing of the longitudinal beam components in the front engine compartment assembly 1, reducing the deformation amount of the front engine compartment assembly 1, improving the problem that the excessive deformation of the front engine compartment occupies too much of the occupant compartment space and causes injuries to the front row occupants, and improving the safety.

[0042] Generally speaking, in this embodiment, by increasing the connection points between the first force transmission beam 4 and the battery pack assembly 9, the strengthening of the bottom frame structure of the vehicle body is realized, and at the same time, the problem of excessive vehicle body weight increase caused by excessive addition of strengthening structures is avoided. In addition, since the first force transmission beam 4 is located on the front side of the battery pack assembly 9, it does not occupy the battery pack installation space, the volume of the battery pack assembly 9 is not compressed, the problem of overall power reduction of the battery pack assembly 9 caused by adding strengthening structures is avoided, and the vehicle endurance is not affected.

[0043] In some specific embodiments, the number of side connection positions 3 on the left side of the front floor assembly 2 can be one or multiple. In the case of multiple settings, the multiple side connection positions 3 on the left side are distributed in the front-rear direction, increasing the connection area between the battery pack assembly 9 and the front floor assembly 2 in the front-rear direction, maximizing the bonding strength between the two. At the same time, when a frontal collision occurs, the multiple side connection positions 3 distributed in the front-rear direction can play a role in superimposing and bearing the frontal collision force, maximizing the bearing capacity, which promotes the reduction of collision energy and the reduction of collision deformation.

[0044] It should be noted that the setting method and principle of the side connection position 3 on the right side of the front floor assembly 2 are similar to those on the left side, and will not be elaborated here. More specifically, the side connection position 3 on the left side of the front floor assembly 2 and the side connection position 3 on the right side are symmetrically arranged left and right to improve the force uniformity of the battery pack assembly 9.

[0045] In some embodiments, referring to Figures 1 to 5 , the battery pack assembly mounting structure further includes a second force transmission beam 6 extending in the front-rear direction. The front part of the second force transmission beam 6 is connected to the front engine compartment assembly 1, and the rear part is connected to the front floor assembly 2. The second force transmission beam 6 forms the side connection position 3. Among them, based on the front-rear extension layout of the second force transmission beam 6, it is advisable to set multiple side connection positions 3, and the multiple side connection positions 3 are distributed in the front-rear direction to make full use of the space of the second force transmission beam 6. The second force transmission beam 6 in this embodiment is similar to the first force transmission beam 4, forming a force transmission path between the front engine compartment assembly 1 and the battery pack assembly 9. When a frontal collision occurs, the force received by the front engine compartment assembly 1 can not only directly transmit the force to the front floor assembly 2, but also be transmitted to the battery pack assembly 9 through the second force transmission beam 6. The internal structure of the battery pack assembly 9 is used to resist and absorb the collision energy, assisting the first force transmission beam 4 to further reduce the deformation and sheet metal tearing of the longitudinal beam components in the front engine compartment assembly 1, reducing the deformation of the front engine compartment assembly 1, and further improving the problem of excessive deformation of the front engine compartment causing injury to the front row occupants, thus enhancing safety.

[0046] During specific implementation, the rear end of the second force transmission beam 6 extends to the rear part of the front floor assembly 2. By extending the length of the second force transmission beam 6, the force transmission path of the second force transmission beam 6 is increased, thereby enhancing the dissipation effect of the second force transmission path on the collision energy. At the same time, the extension of the second force transmission beam 6 also increases the points or areas for the second force transmission beam 6 to conduct the acting force to the battery pack assembly 9 and the front floor assembly 2, further accelerating the speed of the force transmission and decomposition of the collision force. In addition, the second force transmission beam 6 also strengthens the front floor assembly 2, which promotes the improvement of the bending and torsional strength of the front floor assembly 2. When a collision occurs, the deformation of the front floor assembly 2 is smaller and the safety is higher.

[0047] In some embodiments, referring to Figures 1 to 5, a rear connection position 7 for connecting to the rear part of the battery pack assembly 9 is further formed at the rear side of the front floor assembly 2. In this embodiment, the number of connection points between the battery pack assembly 9 and the front floor assembly 2 is further increased, the bonding strength between the battery pack assembly 9 and the front floor assembly 2 is improved, and then the integrity of the battery pack assembly 9 and the battery pack assembly installation structure after assembly is improved. By improving the integrity, the overall structural strength of the battery pack assembly 9 after assembly is improved, and thus it can better resist the collision force; moreover, the connection points between the battery pack assembly 9 and the vehicle body cover the front, side, and rear of the battery pack assembly 9 at the same time, which is beneficial to improving the overall torsional stiffness of the vehicle body and is also beneficial to improving the NVH dynamic stiffness of the key installation points. When a collision occurs, the collision force borne by the battery pack assembly 9 can be quickly transmitted to the rear part of the front floor assembly 2, and the collision force can be quickly dispersed through the connection between the front floor assembly 2 and other parts of the vehicle body, further improving the decomposition and transmission effect of the collision force.

[0048] During specific implementation, the number of the rear connection positions 7 can be one. At this time, it is advisable to set the position of the rear connection position 7 to coincide with the front-rear central axis of the front floor assembly 2 to ensure the uniformity of force. The number of the rear connection positions 7 can also be multiple. Examples of the distribution methods of the rear connection positions 7 are as follows: 1) The rear connection positions 7 are arranged in multiple rows along the front-rear direction, and each row is provided with multiple rear connection positions 7 distributed along the left-right direction; 2) Multiple rear connection positions 7 are arranged in a row along the left-right direction. For method 2), on the premise of ensuring a large number of connection points and reliable connection, it can also minimize the occupation of the front-rear space and avoid the arrangement of other components behind the front floor assembly 2 being affected by the setting of the rear connection position 7.

[0049] On the basis of setting the rear connection position 7, refer to Figures 1 to 4 , the battery pack assembly installation structure further includes a third force transmission beam 8. The third force transmission beam 8 is arranged on the front floor assembly 2 and extends along the front-rear direction. The rear end of the third force transmission beam 8 forms the rear connection position 7; wherein, the front end of the third force transmission beam 8 extends to the front end of the front floor assembly 2. By setting the third force transmission beam 8, the frontal collision force can be quickly transmitted from front to back to the battery pack assembly 9, further increasing the transmission path and decomposition efficiency of the frontal collision force.

[0050] During specific implementation, refer to Figures 1 to 4 , the front floor assembly 2 includes a front floor middle plate 220 and two front floor side plates 230. The two front floor side plates 230 are respectively arranged on the left and right sides of the front floor middle plate 220, and the side edges of the front floor side plates 230 are overlapped and fixed with the corresponding side edges of the front floor middle plate 220. The overlapping area between the front floor side plates 230 and the front floor middle plate 220 forms a hollow third force transmission beam 8, so that the third force transmission beam 8 has a closed inner cavity, thereby providing a reliable force transmission function.

[0051] On the basis of providing the rear connection position 7, the cooperation mode between the rear connection position 7 and the front connection position 5 can be referred to Figure 7 , where there are two groups of front connection positions 5, the two groups of front connection positions 5 are symmetrically distributed left and right, and the distance between the two groups of front connection positions 5 is D1; there are two groups of rear connection positions 7, the two groups of rear connection positions 7 are symmetrically distributed left and right, and the distance between the two groups of rear connection positions 7 is D2, and D2 < D1. In specific implementation, each group of front connection positions 5 includes at least one front connection position 5, and each group of rear connection positions 7 includes at least one rear connection position 7; in this embodiment, an implementation mode is exemplarily shown in which each group of front connection positions 5 includes one front connection position 5 and each group of rear connection positions 7 includes one rear connection position 7. In this embodiment, a trapezoidal distribution configuration is formed between the front connection position 5 and the rear connection position 7. By utilizing the characteristic that the trapezoid has a relatively high structural strength, reinforcement is formed between the battery pack assembly 9 and the battery pack assembly installation structure, which is beneficial to improving the bending and torsion resistance strength of the overall structure after assembly, as well as the load-bearing capacity in the front-back direction and the left-right direction.

[0052] In some specific distribution embodiments of the first force transmission beam 4 and the second force transmission beam 6, there are two first force transmission beams 4, and they are symmetrically distributed left and right. There are two second force transmission beams 6, and they are symmetrically distributed left and right, as Figure 3 shown; in order to maximize the coverage area of the battery pack installation space as much as possible, the second force transmission beam 6 is located between the first force transmission beam 4 and the edge of the corresponding side of the front floor assembly 2. Based on this, in order to form the first force transmission beam 4, a front installation longitudinal beam 410 is provided on the lower side of the front engine compartment assembly 1, and a front floor upper longitudinal beam 420 is provided on the upper side of the front floor assembly 2. The front installation longitudinal beam 410 and the front floor upper longitudinal beam 420 are butt-jointed up and down to form the first force transmission beam 4 with a closed inner cavity, and the rear end of the front installation longitudinal beam 410 forms the front connection position 5. Since the first force transmission beam 4 has a closed inner cavity, it can more reliably realize the transmission of the acting force and form an effective force transmission path; at the same time, by decomposing the first force transmission beam 4, the front floor upper longitudinal beam 420 is arranged on the upper side to avoid affecting the installation of the battery pack assembly 9 below. The front installation longitudinal beam 410 is used to realize the connection with the front engine compartment assembly 1. The design and assembly of the two beam bodies are more flexible and can better meet the arrangement requirements of the surrounding components.

[0053] On the basis of the above embodiment, refer to Figure 4 , in order to form the first force transmission beam 4 with a closed inner cavity, the front installation longitudinal beam 410 is a concave beam body, and the front installation longitudinal beam 410 protrudes backward from the front engine compartment assembly 1. The rear protruding area of the front installation longitudinal beam 410 is in fit connection with the lower side surface of the front floor assembly 2; the front floor upper longitudinal beam 420 is a convex beam body, and the front end of the front floor upper longitudinal beam 420 protrudes forward from the front floor assembly 2. The front protruding area of the front floor upper longitudinal beam 420 is in fit connection with the upper side surface of the front engine compartment assembly 1.

[0054] In specific implementation, refer toFigure 4 , the front mounting longitudinal beam 410 forms an inner cavity that is wider at the top and narrower at the bottom, and the front floor upper longitudinal beam 420 forms an inner cavity that is narrower at the top and wider at the bottom. The wide ends of the front mounting longitudinal beam 410 and the front floor upper longitudinal beam 420 are butt-jointed with each other. At the same time, the front engine compartment assembly 1 and the front floor assembly 2 close the open sides of the front mounting longitudinal beam 410 and the front floor upper longitudinal beam 420, forming two closed inner cavities up and down. In the vertical and horizontal directions, the trapezoidal inner cavity enables both the front mounting longitudinal beam 410 and the front floor upper longitudinal beam 420 to provide effective support, enhancing the structural strength of this area and providing better support for side impacts; in the front-rear direction, the two can also form two parallel force transmission channels, enabling the rapid decomposition and transmission of collision forces; at the same time, the cooperation between the front mounting longitudinal beam 410 and the front floor upper longitudinal beam 420 also effectively improves the bending and torsional strength of this area, promoting the structural stability of this area during frontal and side impacts.

[0055] After a collision occurs, the collision energy will generate vibrations. In this embodiment, the height of the inner cavity formed by the front floor upper longitudinal beam 420 is less than the height of the inner cavity formed by the front mounting longitudinal beam 410. The front floor upper longitudinal beam 420 and the front mounting longitudinal beam 410 are asymmetric in the vertical direction. During the transmission of the collision energy, the frequencies of the forces transmitted by the front floor upper longitudinal beam 420 and the front mounting longitudinal beam 410 are different, playing the role of frequency avoidance design and avoiding further damage to the vehicle body structure caused by resonance.

[0056] In some specific embodiments of the front floor upper longitudinal beam 420, refer to Figure 2 and Figure 5 , the rear end of the front floor upper longitudinal beam 420 extends to the middle of the front floor assembly 2. In this embodiment, a seat mounting cross beam 210 is provided on the upper side of the front floor assembly 2. In order to avoid the front floor upper longitudinal beam 420 affecting the seat mounting cross beam 210, the front floor upper longitudinal beam 420 is extended to the middle of the front floor assembly 2; in addition, the front floor upper longitudinal beam 420 has a longer length area extending backward compared to the front mounting longitudinal beam 410. The front part of the front floor upper longitudinal beam 420 and the front mounting longitudinal beam 410 cooperate as a whole to form a first force transmission beam 4. When a collision occurs, in addition to transmitting the collision force through the first force transmission beam 4, the front floor upper longitudinal beam 420 can also continue to transmit the force to the middle of the front floor assembly 2, further promoting the transmission and decomposition of the collision force.

[0057] In order to form a second force transmission beam 6, refer to Figure 2, a front connecting longitudinal beam 610 is provided on the lower side of the front engine compartment assembly 1, and a front floor longitudinal beam 620 is provided on the lower side of the front floor assembly 2. The rear end of the front connecting longitudinal beam 610 is connected to the front end of the front floor longitudinal beam 620 to form a second force transmission beam 6 with a closed inner cavity. The front floor longitudinal beam 620 forms a side connection position 3. In this embodiment, the space below the front engine compartment assembly 1 and the front floor assembly 2 is fully utilized to form the second force transmission beam 6, which not only meets the installation requirements of the battery pack assembly 9 but also avoids affecting the layout of the components above the front floor assembly 2 and the front engine compartment assembly 1. At the same time, the second force transmission beam 6 is decomposed to meet the connection between the front engine compartment assembly 1 and the front floor assembly 2, and also makes the design of the front connecting longitudinal beam 610 and the front floor longitudinal beam 620 more flexible. Specifically, during implementation, the left and right widths of the front connecting longitudinal beam 610 gradually decrease from front to back to facilitate the transmission of frontal collision forces.

[0058] In some specific embodiments of the front connecting longitudinal beam 610 and the front floor longitudinal beam 620, refer to Figure 4 , both the front connecting longitudinal beam 610 and the front floor longitudinal beam 620 form inner cavities that are wider at the top and narrower at the bottom. The front engine compartment assembly 1 and the front floor assembly 2 close the open sides of the front connecting longitudinal beam 610 and the front floor longitudinal beam 620 to form a closed inner cavity that runs through from front to back. In the vertical and horizontal directions, the trapezoidal inner cavity enables both the front connecting longitudinal beam 610 and the front floor longitudinal beam 620 to provide effective support, enhancing the structural strength of this area and providing better support for side collisions; in the front-back direction, it can provide more reliable support and force transmission.

[0059] In some embodiments of the battery pack assembly 9, refer to Figure 1 and Figure 6 , the battery pack assembly 9 includes a battery pack main body 910 and an installation frame 920. The installation frame 920 surrounds the outer periphery of the battery pack main body 910, and a connection component 10 is provided on the installation frame 920 to be connected to the front connection position 5, the side connection position 3, and the rear connection position 7 respectively. Specifically, main body installation holes are respectively provided on the lower sides of the first force transmission beam 4, the second force transmission beam 6, and the third force transmission beam 8. Different main body installation holes respectively form the front connection position 5, the side connection position 3, and the rear connection position 7. Connection seats 11 corresponding to the installation holes are respectively fixed inside the first force transmission beam 4, the second force transmission beam 6, and the third force transmission beam 8; the connection component 10 includes an installation seat 1010 and a fastener 1020. Frame installation holes corresponding to the main body installation holes are provided on the installation seat 1010. During installation, the installation seat 1010 is placed on the installation frame 920, and the fastener 1020 sequentially passes through the installation seat 1010 and the main body installation hole and is finally connected and fixed to the corresponding connection seat 11. Among them, the connection seat 11 is connected to the first force transmission beam 4, the second force transmission beam 6, and the third force transmission beam 8 by welding.

[0060] More specifically, the adaptation methods between the connecting seat 11 and the fastener 1020 are exemplified as follows: 1) The fastener 1020 is a threaded fastener 1020, and the connecting seat 11 is a threaded seat, as Figure 6 shown; 2) The fastener 1020 is a direct plug-in buckle, and the connecting seat 11 is a clamping seat, which is not shown in the figure.

[0061] For the installation structure of the battery pack assembly of the present application, an assembly design concept of forming a frame-type fusion structure between the battery pack assembly 9 and the vehicle body is adopted. Compared with the traditional structure, connection points are respectively added on the front side and the rear side of the battery pack assembly 9, and two groups of force transmission channels are formed through the first force transmission beam 4 and the second force transmission beam 6, so as to disperse the frontal collision force, which is beneficial to dispersing the collision force, thereby forming reinforcement to solve the problem of vehicle body deformation and tearing. While achieving the reinforcement effect, it can also avoid occupying the installation space of the battery pack; in addition, since the connection points of the battery pack assembly 9 surround the periphery of the battery pack assembly 9, it is beneficial to improve the overall torsional stiffness of the vehicle body, and the reinforcement of the overall structure is beneficial to improving the NVH dynamic stiffness of the key installation points.

[0062] Based on the same inventive concept, the embodiment of the present application further provides a vehicle, including the above-mentioned installation structure of the battery pack assembly.

[0063] Compared with the prior art, the vehicle provided in this embodiment realizes the reinforcement of the bottom frame structure of the vehicle body by adopting the above-mentioned installation structure of the battery pack assembly. At the same time, it also avoids the problem of excessive vehicle body weight increase caused by adding too many reinforcement structures, does not increase the energy consumption of the whole vehicle. At the same time, the structural optimization of the present application does not occupy the installation space of the battery pack, and the volume of the battery pack assembly 9 is not compressed, avoiding the problem of overall power reduction of the battery pack assembly 9 caused by adding reinforcement structures, and does not affect the endurance performance of the whole vehicle, which is beneficial to improving the use quality of the whole vehicle.

[0064] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present utility model shall be included in the protection scope of the present utility model.

Claims

1. A battery pack assembly installation structure, characterized in that: include: A front cabin assembly (1), and a front floor assembly (2) connected to the rear side of the front cabin assembly (1), wherein a battery pack installation space capable of accommodating a battery pack assembly (9) is formed below the front floor assembly (2); The left side and the right side of the front floor assembly (2) respectively form side connection positions (3) connected to corresponding side portions of the battery pack assembly (9); The battery pack assembly installation structure also includes a first force transmission beam (4) extending forward and backward, wherein the first force transmission beam (4) is connected to the front cabin assembly (1), and a rear end forms a front connection position (5) connected to the front of the battery pack assembly (9).

2. The battery pack assembly installation structure according to claim 1, characterized in that: The battery pack assembly mounting structure also includes a second force transmission beam (6) extending in the front-to-back direction, the front portion of the second force transmission beam (6) is connected to the front cabin assembly (1), and the rear portion is connected to the front floor assembly (2), and the second force transmission beam (6) forms the side connection position (3).

3. The battery pack assembly installation structure according to claim 1, characterized in that: The rear side of the front floor assembly (2) is also formed with a rear connection position (7) connected to the rear part of the battery pack assembly (9).

4. The battery pack assembly installation structure according to claim 3, characterized in that: The front connection positions (5) are provided with two groups, the two groups of the front connection positions (5) are symmetrically distributed left and right, and the distance between the two groups of the front connection positions (5) is D1; The rear connection positions (7) are provided with two groups, the two groups of the rear connection positions (7) are symmetrically distributed left and right, and the distance between the two groups of the rear connection positions (7) is D2, D2<D1.

5. The battery pack assembly installation structure according to claim 2, characterized in that: There are two first force transmission beams (4) and they are symmetrically distributed on the left and right. There are two second force transmission beams (6) and they are symmetrically distributed on the left and right. The second force transmission beam (6) is located between the edges of the first force transmission beam (4) and the corresponding sides of the front floor assembly (2); a front mounting longitudinal beam (410) is provided on the lower side of the front cabin assembly (1); a front floor upper longitudinal beam (420) is provided on the upper side of the front floor assembly (2); the front mounting longitudinal beam (410) and the front floor upper longitudinal beam (420) are butted up and down with each other to form the first force transmission beam (4) with a closed inner cavity; the rear end of the front mounting longitudinal beam (410) forms the front connecting position (5).

6. The battery pack assembly installation structure according to claim 5, characterized in that: The front mounting longitudinal beam (410) is a concave beam body, and the front mounting longitudinal beam (410) protrudes rearward from the front cabin assembly (1), and the rearward convex area of ​​the front mounting longitudinal beam (410) is fitted and connected to the lower side of the front floor assembly (2); The upper longitudinal beam (420) on the front floor is an upward convex beam body, and the front end of the upper longitudinal beam (420) on the front floor protrudes forward from the front floor assembly (2), and the forward convex area of ​​the upper longitudinal beam (420) on the front floor is fitted and connected to the upper side surface of the front cabin assembly (1).

7. The battery pack assembly installation structure according to claim 5, characterized in that: The rear end of the front floor upper longitudinal beam (420) extends to the middle of the front floor assembly (2).

8. The battery pack assembly installation structure according to claim 2, characterized in that: A front connecting longitudinal beam (610) is provided on the lower side of the front cabin assembly (1), and a front floor longitudinal beam (620) is provided on the lower side of the front floor assembly (2). The rear end of the front connecting longitudinal beam (610) is connected to the front end of the front floor longitudinal beam (620) to form the second force transmission beam (6) having a closed inner cavity. The front floor longitudinal beam (620) forms the side connecting position (3).

9. The battery pack assembly installation structure according to claim 3, characterized in that: The battery pack assembly installation structure also includes a third force transmission beam (8), which is arranged on the front floor assembly (2) and extends in the front-rear direction, and the rear end of the third force transmission beam (8) forms the rear connection position (7).

10. A vehicle, characterized in that: It includes a battery pack assembly mounting structure as described in any one of claims 1 to 9.

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