Battery pack sealing strip, battery pack mounting structure, and vehicle

Abstract

The present application relates to the technical field of vehicle parts, and provides a battery pack sealing strip, a battery pack mounting structure, and a vehicle. The battery pack sealing strip comprises a sealing part and a connecting part sequentially connected in a vertical direction. The end of the connecting part away from the sealing part is configured to be connected to a battery pack cover plate. A first sealing structure and a second sealing structure protrude from the end of the sealing part away from the connecting part, a protrusion height of the first sealing structure being greater than a protrusion height of the second sealing structure. The sealing part is configured to be sealed against a vehicle body floor by means of the first sealing structure and the second sealing structure. In this way, the first sealing structure having the larger protrusion height can be used to contact the vehicle body floor first to achieve a first seal, and the second sealing structure having the smaller protrusion height can then contact the vehicle body floor to achieve a second seal, so that a plurality of seals can be formed between the battery pack sealing strip and the vehicle body floor.

Description

Battery pack sealing strip, battery pack mounting structure and vehicle Technical Field

[0001] The present application relates to the technical field of vehicle components, and more specifically, to a battery pack sealing strip, a battery pack mounting structure, and a vehicle. Background Art

[0002] Currently, electric vehicle designs typically install the battery pack under the vehicle. However, this arrangement creates a double floor at the battery pack level due to the coexistence of the battery pack cover and floor. This not only underutilizes the battery pack cover, but also increases the number of components and weight of the vehicle, shortening the electric vehicle's range. Therefore, some models have eliminated the floor above the battery pack to increase battery pack cover utilization and reduce weight. Therefore, even with the floor removed, a sealing structure is required to seal the battery pack from the passenger compartment.

[0003] However, existing sealing structures typically consist of simple sealing strips that are directly attached to the battery pack cover using adhesive. This can easily lead to accelerated damage to the sealing strip around the adhesive location due to twisting of the battery pack, and is also inconvenient to remove and replace. Furthermore, existing sealing strips typically have a rectangular cross-section and rely on surface-to-surface contact between the strip and the vehicle body floor to achieve a seal. This simple design results in poor sealing effectiveness and is ineffective in preventing sand and stone.

[0004] Summary of the Invention

[0005] The problem to be solved by this application is: how to improve the sealing effect between the battery pack and the vehicle body floor.

[0006] To solve the above problems, the present application provides a battery pack sealing strip, comprising a sealing portion and a connecting portion connected in sequence along a vertical direction, wherein the end of the connecting portion away from the sealing portion is configured to be connected to the battery pack cover plate, and the end of the sealing portion away from the connecting portion is protruding with a first sealing structure and a second sealing structure, wherein the protruding height of the first sealing structure is greater than the protruding height of the second sealing structure, and the sealing portion is configured to abut and seal with the vehicle body floor through the first sealing structure and the second sealing structure.

[0007] Optionally, the first sealing structure includes a first sealing lip and a second sealing lip, and the first sealing lip and the second sealing lip are arranged oppositely at two ends of the second sealing structure.

[0008] Optionally, a first abutting surface is provided on the first sealing lip, and a second abutting surface is provided on the second sealing lip, one end of the first abutting surface is connected to a side of the first sealing lip facing the second sealing lip, and the other end is connected to a side of the first sealing lip facing away from the second sealing lip, one end of the second abutting surface is connected to a side of the second sealing lip facing the first sealing lip, and the other end is connected to a side of the second sealing lip facing away from the first sealing lip, the first abutting surface and the second abutting surface are arranged opposite to each other, and the distance between the first abutting surface and the second abutting surface increases from the first end to the second end of the sealing portion, wherein the first end of the sealing portion is connected to the connecting portion, and the second end of the sealing portion is away from the connecting portion.

[0009] Optionally, the second sealing structure includes a plurality of sealing teeth, the sealing portion and the connecting portion are extended along a first calibration direction, the plurality of sealing teeth are arranged along a second calibration direction and are respectively extended along the first calibration direction, one end of the sealing tooth is connected to the connecting portion, and the other end is configured to abut and seal against the vehicle body floor; wherein the second calibration direction is parallel to the horizontal direction and perpendicular to the first calibration direction.

[0010] Optionally, an end of the sealing tooth away from the connecting portion is configured to form a line-surface contact with the vehicle body floor.

[0011] Optionally, a first clamping structure is provided on the connecting portion, a second clamping structure is provided on the battery pack cover, and the first clamping structure is configured to be clamped with the second clamping structure.

[0012] Optionally, the end surface of the connecting portion away from the sealing portion has a wave structure, and each crest of the wave structure is configured to abut and seal with the battery pack cover.

[0013] To solve the above problems, the present application further provides a battery pack mounting structure, including a vehicle body floor, a battery pack and the battery pack sealing strip as described above, wherein the battery pack includes a battery pack cover, and the vehicle body floor is provided with an opening that passes through the vehicle body floor in a vertical direction, the battery pack cover is configured to cover the opening, and the battery pack sealing strip is configured to be arranged around the opening.

[0014] Optionally, a boss structure is provided on the vehicle body floor, the boss structure is configured to protrude toward the battery pack cover, and the sealing portion is configured to abut and seal against a side of the boss structure facing the battery pack cover.

[0015] To solve the above problems, the present application also provides a vehicle, including the battery pack sealing strip as described above, or including the battery pack mounting structure as described above.

[0016] Compared with the prior art, this application has the following beneficial effects:

[0017] The present application can achieve the installation and fixation of the battery pack sealing strip on the battery pack cover by detachably connecting the connecting portion of the battery pack sealing strip to the battery pack cover, and also facilitates the rapid removal and replacement of the battery pack sealing strip. At the same time, by providing a first sealing structure and a second sealing structure at one end of the sealing portion away from the connecting portion, such as the upper end, and designing the raised height of the first sealing structure to be greater than the raised height of the second sealing structure, in this way, during the extrusion sealing process of the battery pack sealing strip, the first sealing structure with a larger raised height first contacts the vehicle body floor to achieve the first seal, and the second sealing structure with a smaller raised height later contacts the vehicle body floor to achieve the second seal, so that multiple seals can be formed between the battery pack sealing strip and the vehicle body floor, thereby effectively improving the sealing effect between the battery pack and the vehicle body floor, and at the same time, preventing mud and sand intrusion and corrosion, thereby improving the reliability of the seal. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] FIG1 is a cross-sectional schematic diagram of a battery pack sealing strip installed between a vehicle body floor and a battery pack cover in an embodiment of the present application;

[0019] FIG2 is a schematic structural diagram of a battery pack sealing strip according to an embodiment of the present application;

[0020] FIG3 is a schematic cross-sectional view at AA in FIG2 ;

[0021] FIG4 is a schematic structural diagram of a battery pack cover in an embodiment of the present application;

[0022] FIG5 is a schematic cross-sectional view at point BB in FIG4 ;

[0023] FIG6 is a schematic structural diagram of the battery pack and the vehicle body floor assembly according to an embodiment of the present application;

[0024] FIG7 is a schematic top view of the vehicle body floor in an embodiment of the present application;

[0025] FIG8 is a schematic structural diagram of the vehicle body floor and the battery pack sealing strip when they are sealed at the boss structure in an embodiment of the present application.

[0026] Description of reference numerals:

[0027] 100. Battery pack sealing strip; 1. Sealing portion; 11. First sealing structure; 111. First sealing lip; 1112. First abutting surface; 112. Second sealing lip; 1121. Second abutting surface; 12. Second sealing structure; 121. Sealing teeth; 2. Connecting portion; 21. First snap-fitting structure; 22. Wave structure; 200. Vehicle body floor; 201. First floor frame; 202. Second floor frame; 203. Third floor frame; 204. Fourth floor frame; 210. Opening; 220. Boss structure; 300. Battery pack; 310. Battery pack cover; 311. Second snap-fitting structure; 320. Battery pack frame. DETAILED DESCRIPTION

[0028] In order to make the above-mentioned objects, features and advantages of the present application more obvious and easy to understand, the specific embodiments of the present application are described in detail below with reference to the accompanying drawings.

[0029] The Z-axis in the accompanying drawings represents the vertical direction, that is, the up-down position, and the positive direction of the Z-axis (i.e., the direction of the arrow on the Z-axis) represents the top, and the reverse direction of the Z-axis represents the bottom; the X-axis in the accompanying drawings represents the horizontal direction and is designated as the front-to-back position, with the positive direction of the X-axis representing the front side, and the reverse direction of the X-axis representing the rear side; the Y-axis in the accompanying drawings represents the left-to-right position, with the positive direction of the Y-axis representing the left side, and the reverse direction of the Y-axis representing the right side. It should also be noted that the aforementioned Z-axis, Y-axis, and X-axis are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be understood as limiting this application.

[0030] It should be noted that the terms "first," "second," and the like in the specification and claims of this application and the accompanying drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or precedence. It should be understood that the terms used in this manner are interchangeable where appropriate, such that the embodiments of the present application described herein can be implemented in an order other than that illustrated or described herein.

[0031] As shown in Figure 1, an embodiment of the present application provides a battery pack sealing strip 100, including a sealing portion 1 and a connecting portion 2 connected in sequence along the up and down directions, the connecting portion 2 is configured to be detachably connected to the battery pack cover 310 at one end away from the sealing portion 1, and a first sealing structure 11 and a second sealing structure 12 are protruding from the end of the sealing portion 1 away from the connecting portion 2. The protruding height of the first sealing structure 11 is greater than the protruding height of the second sealing structure 12, and the sealing portion 1 is configured to abut and seal with the vehicle body floor 200 through the first sealing structure 11 and the second sealing structure 12.

[0032] It should be noted that the first sealing structure 11 and the second sealing structure 12 are generally extended along the extension direction of the battery pack sealing strip 100 , and the extension direction of the battery pack sealing strip 100 is also the length direction of the battery pack sealing strip 100 . When the battery pack sealing strip 100 is an annular sealing strip, as shown in FIG2 , the extending direction of the battery pack sealing strip 100 is the circumferential direction of the annular sealing strip. In this case, the width directions of the battery pack sealing strip 100 at different positions are also different. For example, as shown in FIG2 , the width direction of the sealing strips constituting the front and rear ends of the battery pack sealing strip 100 is the X-axis direction, i.e., the front-to-back direction, and the width direction of the sealing strips constituting the left and right ends of the battery pack sealing strip 100 is the Y-axis direction, i.e., the left-to-right direction. When the battery pack sealing strip 100 is composed of multiple long strips spliced ​​end to end, each sealing strip is provided with a sealing portion 1 and a connecting portion 2. In this case, the extending direction of the battery pack sealing strip 100 is the extending direction of the corresponding sealing strip, which is also the length direction of the corresponding sealing strip. Accordingly, the width direction of the battery pack sealing strip 100 is the width direction of the corresponding sealing strip. For ease of description, the battery pack sealing strip 100 is described as an annular sealing strip as an example.

[0033] Specifically, the battery pack 300 is typically mounted at the lower end of the vehicle body floor 200, as shown in Figure 6. In this case, the battery pack cover 310 serves as the upper cover of the battery pack 300, the first sealing structure 11 and the second sealing structure 12 are located at the upper end of the sealing portion 1, and the first snap-fit ​​structure 21 (described below) and the corrugated structure 22 (described below) are located at the lower end of the connecting portion 2. However, in other embodiments, the battery pack 300 can also be mounted at the upper end of the vehicle body floor 200. In this case, the battery pack cover 310 serves as the lower cover of the battery pack 300, the first sealing structure 11 and the second sealing structure 12 are located at the lower end of the sealing portion 1, and the first snap-fit ​​structure 21 and the corrugated structure 22 are located at the upper end of the connecting portion 2. For ease of description, this and the following descriptions will assume that the battery pack 300 is mounted at the lower end of the vehicle body floor 200. The raised height of the first sealing structure 11 refers to the vertical dimension of the first sealing structure 11. Correspondingly, the raised height of the second sealing structure 12 refers to the vertical dimension of the second sealing structure 12. During assembly, the connecting portion 2 of the battery pack sealing strip 100 can be first connected to the battery pack cover 310 of the battery pack 300 by a detachable method such as snap connection, so that the battery pack sealing strip 100 can be detachably fixed to the battery pack cover 310, and then the battery pack frame 320 of the battery pack 300 is connected to the longitudinal beam of the vehicle body by fasteners such as bolts, and the sealing portion 1 of the battery pack sealing strip 100, for example, the upper end is made to contact the vehicle body floor 200, and the battery pack sealing strip 100 is pre-tightened by the fasteners so that the battery pack sealing strip 100 is pressurized up and down, resulting in extrusion deformation, thereby playing a sealing role.

[0034] In this embodiment, the battery pack sealing strip 100 can be removably connected to the battery pack cover 310 by connecting the connecting portion 2 of the battery pack sealing strip 100 to the battery pack cover 310, thereby achieving a secure installation of the battery pack sealing strip 100 on the battery pack cover 310. This also facilitates quick removal and replacement of the battery pack sealing strip 100. Furthermore, by providing a first sealing structure 11 and a second sealing structure 12 at an end of the sealing portion 1, remote from the connecting portion 2, such as the upper end, and designing the raised height of the first sealing structure 11 to be greater than the raised height of the second sealing structure 12, during the compression sealing process of the battery pack sealing strip 100, the first sealing structure 11, with its greater raised height, first contacts the vehicle body floor 200, achieving a primary seal, while the second sealing structure 12, with its smaller raised height, later contacts the vehicle body floor 200, achieving a secondary seal. This allows for multiple seals to be formed between the battery pack sealing strip 100 and the vehicle body floor 200, effectively improving the sealing effect between the battery pack 300 and the vehicle body floor 200. Furthermore, this prevents the intrusion of mud and sand and corrosion, thereby enhancing sealing reliability.

[0035] Optionally, as shown in FIG. 3 , the first sealing structure 11 includes a first sealing lip 111 and a second sealing lip 112 , and the first sealing lip 111 and the second sealing lip 112 are oppositely arranged at two ends of the second sealing structure 12 .

[0036] In this embodiment, the battery pack sealing strip 100 is typically an annular sealing strip, wherein the first sealing lip 111 is provided on the inner ring of the annular sealing strip, and the second sealing lip 112 is provided on the outer ring of the annular sealing strip. By designing the first sealing structure 11 as a structure with opposing sealing lips, the first sealing structure 11 can better prevent foreign matter such as mud, sand, and pebbles from entering between the first sealing structure 11 and the vehicle body floor 200. Furthermore, the structure is simple and easy to manufacture.

[0037] Optionally, in combination with Figure 3, a first abutting surface 1112 is provided on the first sealing lip 111, and a second abutting surface 1121 is provided on the second sealing lip 112, one end of the first abutting surface 1112 is connected to the side of the first sealing lip 111 facing the second sealing lip 112, and the other end is connected to the side of the first sealing lip 111 away from the second sealing lip 112, one end of the second abutting surface 1121 is connected to the side of the second sealing lip 112 facing the first sealing lip 111, and the other end is connected to the side of the second sealing lip 112 away from the first sealing lip 111, the first abutting surface 1112 and the second abutting surface 1121 are arranged opposite to each other, and the distance between the first abutting surface 1112 and the second abutting surface 1121 increases from the first end to the second end of the sealing portion 1, wherein the first end of the sealing portion 1 is connected to the connecting portion 2, and the second end of the sealing portion 1 is away from the connecting portion 2.

[0038] In this embodiment, the lower end of the sealing portion 1 is connected to the connecting portion 2, so the first and second ends of the sealing portion 1 are also the lower and upper ends of the sealing portion 1, respectively. The first abutting surface 1112 is the upper end surface of the first sealing lip 111, and the second abutting surface 1121 is the upper end surface of the second sealing lip 112. Moreover, the distance between the first abutting surface 1112 and the second abutting surface 1121 increases from the lower end to the upper end of the sealing portion 1, that is, the distance between the first abutting surface 1112 and the second abutting surface 1121 gradually increases from bottom to top. In other words, the first abutting surface 1112 and the second abutting surface 1121 are arranged at an angle and are arranged opposite to each other, wherein the first abutting surface 1112 and the second abutting surface 1121 can have an inclined surface structure or a curved surface structure as shown in Figure 3. In this way, when the first sealing structure 11 of the sealing part 1 first contacts the vehicle body floor 200, the first sealing lip 111 and the second sealing lip 112 can be deformed to both sides under the action of extrusion, so that the second sealing structure 12 can be abutted and sealed with the vehicle body floor 200, thereby achieving a second seal on the basis of achieving the first seal, achieving multiple seals, and effectively improving the sealing effect of the battery pack sealing strip 100.

[0039] Optionally, in combination with Figures 1 and 3, the second sealing structure 12 includes a plurality of sealing teeth 121, the sealing portion 1 and the connecting portion 2 are extended along a first calibration direction, the plurality of sealing teeth 121 are arranged along a second calibration direction, and are respectively extended along the first calibration direction, one end of the sealing tooth 121 is connected to the connecting portion 2, and the other end is configured to abut against the vehicle body floor 200, wherein the second calibration direction is parallel to the horizontal direction and perpendicular to the first calibration direction.

[0040] It should be noted that the first calibration direction is the extension direction of the battery pack sealing strip 100 , and the second calibration direction is the width direction of the battery pack sealing strip 100 , that is, the plurality of sealing teeth 121 are arranged along the width direction of the battery pack sealing strip 100 .

[0041] In this embodiment, the upper end of the sealing teeth 121 can be a flat surface with a certain width. In this case, the cross-section of the sealing teeth 121 is generally narrow at the upper end and wide at the lower end, so that the sealing teeth 121 form surface-to-surface contact with the vehicle body floor 200. The upper end of the sealing teeth 121 can also be an edge, that is, the cross-section of the sealing teeth 121 is generally sharp at the upper end and wide at the lower end, as shown in Figure 3, so that the sealing teeth 121 form linear surface contact with the vehicle body floor 200. Multiple sealing teeth 121 can be arranged in intervals or adjacently. In actual applications, it is generally preferred to arrange multiple sealing teeth 121 adjacently to reduce the width of the battery pack sealing strip 100. During the assembly process, the first sealing structure 11 of the sealing part 1 first abuts against the vehicle body floor 200 to achieve the first seal. When the battery pack 300 continues to squeeze the battery pack sealing strip 100 upward, the multiple sealing teeth 121 of the second sealing structure 12 form multiple sealing parts with the vehicle body floor 200, thereby achieving the second seal. At the same time, the second seal is a multi-stage sealing structure composed of multiple sealing parts, and the sealing effect is better. In addition, the gaps between adjacent sealing teeth 121 can not only provide a better deformation space for the second sealing structure 12, preventing the multiple sealing teeth 121 from rubbing and making abnormal noises when being squeezed, but also facilitate heat dissipation of the battery pack sealing strip 100 to prevent aging of the battery pack sealing strip 100.

[0042] Optionally, as shown in FIG. 3 , the sealing teeth 121 are configured to form line-surface contact with the vehicle body floor 200 .

[0043] In this embodiment, the cross-section of the sealing teeth 121 preferably has a pointed upper end and a wide lower end. The root of the sealing teeth 121 is integrally connected to the upper end of the connecting portion 2, and the tip of the sealing teeth 121 abuts against the vehicle body floor 200, forming a linear contact. This reduces the contact area between a single sealing tooth 121 and the vehicle body floor 200, preventing friction noise caused by squeezing between the sealing teeth 121 and the vehicle body floor 200.

[0044] Optionally, in combination with Figures 1, 3 and 5, a first snap-fitting structure 21 is provided on the connecting portion 2, a second snap-fitting structure 311 is provided on the battery pack cover 310, and the first snap-fitting structure 21 is configured to snap-fit ​​with the second snap-fitting structure 311.

[0045] Specifically, the first snap-fit ​​structure 21 is generally arranged along the extension direction of the battery pack sealing strip 100, while the second snap-fit ​​structure 311 is arranged corresponding to the first snap-fit ​​structure 21, that is, the second snap-fit ​​structure 311 is arranged on the battery pack cover 310 along the extension direction of the battery pack sealing strip 100. In other words, when the battery pack sealing strip 100 is an annular sealing strip, the second snap-fit ​​structure 311 is also an annular structure, as shown in FIG4 ; when the battery pack sealing strip 100 is assembled into an annular sealing strip by a plurality of long strips, the second snap-fit ​​structure 311 is also formed by connecting a plurality of segments end to end in sequence to form an annular structure. The first snap-fit ​​structure 21 and the second snap-fit ​​structure 311 can be a mutually engaging connection structure such as a card slot and a card block, or other connecting structures that adopt a snap-fit ​​connection, which is not specifically limited here.

[0046] In this embodiment, a first clamping structure 21 and a second clamping structure 311 are respectively provided on the connecting portion 2 of the battery pack sealing strip 100 and the battery pack cover 310, so that the first clamping structure 21 and the second clamping structure 311 can be clamped together to realize the fixed connection and limitation between the battery pack sealing strip 100 and the battery pack cover 310. Compared with the prior art of installing and fixing the sealing strip by gluing, this can realize the traceless installation and limitation of the battery pack sealing strip 100, and facilitate the rapid disassembly and replacement of the battery pack sealing strip 100.

[0047] Optionally, with reference to FIG1 , FIG3 and FIG5 , the first clamping structure 21 and the second clamping structure 311 are respectively one of a clamping slot and a clamping block.

[0048] In this embodiment, either a slot is provided on the connecting portion 2 and a block is provided on the battery pack cover 310, or the block is provided on the connecting portion 2 and a slot is provided on the battery pack cover 310. In practical applications, the slot is provided on the connecting portion 2 and the block is provided on the battery pack cover 310. In this way, the battery pack sealing strip 100 and the battery pack cover 310 are connected by the engagement between the slot and the block, which not only simplifies the mechanical structure of the battery pack sealing strip 100 and the battery pack cover 310 but also facilitates processing and manufacturing.

[0049] Furthermore, in combination with Figures 3 and 5, a plurality of first snap-fit ​​structures 21 are provided on the connecting portion 2, and a plurality of second snap-fit ​​structures 311 are provided on the battery pack cover 310. The plurality of first snap-fit ​​structures 21 are arranged in one-to-one correspondence with the plurality of second snap-fit ​​structures 311, and the plurality of first snap-fit ​​structures 21 are arranged along the second calibration direction.

[0050] In this embodiment, the connecting portion 2 is typically provided with a plurality of first engaging structures 21, such as three engaging grooves, and the plurality of first engaging structures 21 are arranged along the width direction of the battery pack sealing strip 100. Accordingly, the battery pack cover 310 is provided with a plurality of second engaging structures 311, such as three engaging blocks, and the plurality of second engaging structures 311 are arranged one-to-one with the plurality of first engaging structures 21. Thus, by engaging the plurality of first engaging structures 21 with the plurality of second engaging structures 311, the force applied to the battery pack sealing strip 100 is more evenly distributed, ensuring the firmness and effectiveness of the engagement between the battery pack sealing strip 100 and the battery pack cover 310. This reduces the risk of the battery pack sealing strip 100 falling off and improves the sealing effect between the battery pack sealing strip 100 and the battery pack cover 310.

[0051] Optionally, as shown in FIG1 and FIG3 , the end surface of the connecting portion 2 away from the sealing portion 1 is in a wave structure 22 , and each crest of the wave structure 22 is configured to abut and seal against the battery pack cover 310 .

[0052] Specifically, the wave structure 22 is usually arranged at, for example, the lower end of the connecting portion 2, that is, the lower end surface of the connecting portion 2 is in a wave shape with ups and downs. Moreover, the wave structure 22 is extended along the battery pack sealing strip 100, and the various crests of the wave structure 22 are arranged in the width direction of the battery pack sealing strip 100. The raised heights of the various crests of the wave structure 22 (that is, the dimensions of the wave structure 22 at the crests along the up and down directions) can be the same or different. For example, when the upper end surface of the battery pack cover 310 is uneven, the raised heights of the various crests of the wave structure 22 can be designed to be different. When the upper end surface of the battery pack cover 310 is flat, the raised heights of the various crests of the wave structure 22 can be designed to be the same.

[0053] In this embodiment, by designing the end face of the connecting portion 2 away from the sealing portion 1 into a wave structure 22, a wavy contact surface with undulating shapes is formed at the lower end of the battery pack sealing strip 100, and each wave crest of the wavy contact surface is in contact with the battery pack cover 310, thereby forming a plurality of line-surface contact sealing portions between the battery pack sealing strip 100 and the battery pack cover 310, thereby realizing multi-stage sealing of the lower end of the battery pack sealing strip 100. Compared with surface-to-surface contact sealing, this can reduce the friction, abnormal noise and wear caused by surface-to-surface contact, and at the same time, make the deformation and force effects of the battery pack sealing strip 100 better, and the sealing effect better.

[0054] 6 and 7 , another embodiment of the present application provides a battery pack mounting structure, including a vehicle body floor 200, a battery pack 300, and the battery pack sealing strip 100 as described above. The battery pack 300 includes a battery pack cover 310. The vehicle body floor 200 is provided with an opening 210 that passes through the vehicle body floor 200 in a vertical direction. The battery pack cover 310 is configured to block the opening 210, and the battery pack sealing strip 100 is configured to be arranged around the opening 210.

[0055] Specifically, the battery pack 300 is typically mounted at the lower end of the vehicle body floor 200. As shown in Figure 6, the battery pack 300 typically includes a battery pack cover 310 and a battery pack frame 320. The battery pack cover 310 is typically connected to the upper end of the battery pack frame 320 and to the lower end of the vehicle body floor 200. The battery pack sealing strip 100 is typically disposed between the vehicle body floor 200 and the battery pack cover 310. The sealing portion 1 of the battery pack sealing strip 100 abuts and seals the vehicle body floor 200, and the connecting portion 2 of the battery pack sealing strip 100 is snap-fitted to the battery pack cover 310. The vehicle body floor 200 is a hollow floor structure having an opening 210. The battery pack cover 310 covers the opening 210 of the vehicle body floor 200, enabling the battery pack cover 310 to provide support for the vehicle body floor structure. The battery pack sealing strip 100 is disposed on the first floor frame 201, the second floor frame 202, the third floor frame 203, and the fourth floor frame 204, and is disposed around the opening 210. The area enclosed by the battery pack sealing strip 100 is typically larger than the area of ​​the opening 210, and the shape of the battery pack sealing strip 100 typically matches the shape of the opening 210. For example, if the opening 210 is rectangular, the battery pack sealing strip 100 typically also has a rectangular structure; if the opening 210 is trapezoidal, the battery pack sealing strip 100 typically also has a trapezoidal structure.

[0056] In this embodiment, the vehicle body floor 200 is designed as a hollow floor structure with an opening 210 to reduce the weight of the vehicle body and lower production costs; at the same time, the battery pack cover 310 is used to cover the opening 210, so that the battery pack cover 310 can provide support as the vehicle body floor structure, thereby reasonably utilizing the load-bearing capacity of the battery pack 300; and the battery pack sealing strip 100 is used to seal the circumference of the opening 210 to achieve a seal between the battery pack 300 and the vehicle body floor 200, thereby preventing external noise, wind, mud and sand, etc. from entering the passenger compartment.

[0057] As shown in FIG7 , the vehicle body floor 200 includes a first floor frame 201, a second floor frame 202, a third floor frame 203, and a fourth floor frame 204, which are connected end to end to form an opening 210. The first floor frame 201 and the third floor frame 203 are disposed opposite each other and form the front and rear ends of the vehicle body floor 200, while the second floor frame 202 and the fourth floor frame 204 are disposed opposite each other and form the left and right ends of the vehicle body floor 200. The first floor frame 201 is typically welded to the front panel and front cross member of the vehicle body to form a front connection and sealing support structure. The third floor frame 203 is typically welded to the rear structure of the vehicle body to form a rear sealing and connection support structure. The second floor frame 202 and the fourth floor frame 204 are typically welded to the front and rear of the vehicle body via longitudinal beams to form left and right sealing and support structures. Furthermore, the second floor frame 202 and the fourth floor frame 204 are typically disposed symmetrically to reduce mold costs.

[0058] Optionally, as shown in Figure 8, a boss structure 220 is provided on the vehicle body floor 200, and the boss structure 220 is configured to be raised toward the battery pack cover 310, and the sealing portion 1 is configured to abut and seal with the side of the boss structure 220 facing the battery pack cover 310.

[0059] In this embodiment, the boss structure 220 is arranged along the extension direction of the battery pack sealing strip 100, that is, the boss structure 220 is also generally annular. The boss structure 220 is generally protruded from a local part of the vehicle body floor 200 toward the battery pack cover 310 and is arranged around the opening 210 on the vehicle body floor 200. In other words, the first floor frame 201, the second floor frame 202, the third floor frame 203 and the fourth floor frame 204 of the vehicle body floor 200 are all provided with the boss structure 220, and the sealing portion 1 of the battery pack sealing strip 100 is abutted and sealed with the side of the boss structure 220 facing the battery pack cover 310. In this way, there is a certain distance between the sealing surface on the boss structure 220 (that is, the side of the boss structure 220 facing the battery pack cover 310) and the floor surface, so that the boss structure 220 can be used to resist external noise, wind and mud and sand during driving, so that the boss structure 220 can play the role of the first sealing structure. Moreover, the setting of the boss structure 220 can increase the rigidity of the sealing surface and reduce the distance between the battery pack cover 310 and the vehicle body floor 200, thereby increasing the sealing pressure during extrusion sealing and improving the reliability of the seal.

[0060] Another embodiment of the present application provides a vehicle, comprising the battery pack sealing strip 100 as described above, or comprising the battery pack mounting structure as described above.

[0061] The beneficial effects of the vehicle in this embodiment relative to the prior art are the same as those of the above-mentioned battery pack sealing strip 100 or the above-mentioned battery pack mounting structure, and will not be repeated here.

[0062] Although the present application is disclosed as above, the protection scope of the present application is not limited thereto. Those skilled in the art may make various changes and modifications without departing from the spirit and scope of the present application, and these changes and modifications will fall within the protection scope of the present application.

Claims

1. A battery pack sealing strip, characterized in that: The invention comprises a sealing portion (1) and a connecting portion (2) connected in sequence along a vertical direction, wherein the end of the connecting portion (2) away from the sealing portion (1) is configured to be connected to a battery pack cover plate (310), and the end of the sealing portion (1) away from the connecting portion (2) is provided with a first sealing structure (11) and a second sealing structure (12) protruding therefrom, wherein the protruding height of the first sealing structure (11) is greater than the protruding height of the second sealing structure (12), and the sealing portion (1) is configured to be abutted and sealed with a vehicle body floor (200) through the first sealing structure (11) and the second sealing structure (12).

2. The battery pack sealing strip according to claim 1, characterized in that: The first sealing structure (11) comprises a first sealing lip (111) and a second sealing lip (112), wherein the first sealing lip (111) and the second sealing lip (112) are arranged oppositely at two ends of the second sealing structure (12).

3. The battery pack sealing strip according to claim 2, characterized in that: The first sealing lip (111) is provided with a first abutting surface (1112), and the second sealing lip (112) is provided with a second abutting surface (1121), one end of the first abutting surface (1112) is connected to a side of the first sealing lip (111) facing the second sealing lip (112), and the other end is connected to a side of the first sealing lip (111) facing away from the second sealing lip (112), and one end of the second abutting surface (1121) is connected to a side of the second sealing lip (112) facing the first sealing lip (112). One end of the sealing portion (1) is connected to the side of the second sealing lip (112) facing away from the first sealing lip (111), and the other end is connected to the side of the second sealing lip (112) facing away from the first sealing lip (111), the first abutting surface (1112) and the second abutting surface (1121) are arranged opposite to each other, and the distance between the first abutting surface (1112) and the second abutting surface (1121) increases along the direction from the first end to the second end of the sealing portion (1), wherein the first end of the sealing portion (1) is connected to the connecting portion (2), and the second end of the sealing portion (1) is away from the connecting portion (2).

4. The battery pack sealing strip according to claim 1, characterized in that: The second sealing structure (12) comprises a plurality of sealing teeth (121); the sealing portion (1) and the connecting portion (2) are extended along a first calibration direction; the plurality of sealing teeth (121) are arranged in an array along a second calibration direction and are respectively extended along the first calibration direction; one end of the sealing tooth (121) is connected to the connecting portion (2) and the other end is configured to abut against and seal the vehicle body floor (200); wherein the second calibration direction is parallel to the horizontal direction and perpendicular to the first calibration direction.

5. The battery pack sealing strip according to claim 4, characterized in that: One end of the sealing tooth (121) away from the connecting portion (2) is configured to form a line-surface contact with the vehicle body floor (200).

6. The battery pack sealing strip according to claim 1, characterized in that: The connecting portion (2) is provided with a first clamping structure (21), the battery pack cover plate (310) is provided with a second clamping structure (311), and the first clamping structure (21) is configured to be clamped with the second clamping structure (311).

7. The battery pack sealing strip according to claim 1, characterized in that: The end surface of the connecting portion (2) away from the sealing portion (1) presents a wave structure (22), and each wave crest of the wave structure (22) is configured to abut and seal against the battery pack cover plate (310).

8. A battery pack installation structure, characterized in that: The invention comprises a vehicle body floor (200), a battery pack (300) and a battery pack sealing strip as claimed in any one of claims 1 to 7, wherein the battery pack (300) comprises a battery pack cover (310), the vehicle body floor (200) is provided with an opening (210) penetrating the vehicle body floor (200) in a vertical direction, the battery pack cover (310) is configured to cover the opening (210), and the battery pack sealing strip is configured to be arranged around the opening (210).

9. The battery pack installation structure according to claim 8, characterized in that: The vehicle body floor (200) is provided with a boss structure (220), the boss structure (220) being configured to be raised toward the battery pack cover (310), and the sealing portion (1) of the battery pack sealing strip being configured to abut and seal against a side of the boss structure (220) facing the battery pack cover (310).

10. A vehicle, characterized in that: It includes a battery pack sealing strip as described in any one of claims 1 to 7, or it includes a battery pack mounting structure as described in any one of claims 8 to 9.

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