Bottom guard, battery pack, and vehicle

Abstract

A vehicle (1000). The vehicle (1000) comprises a battery pack (100); the battery pack (100) comprises a bottom guard (1); and the bottom guard (1) comprises a bottom guard body (10). The bottom guard body (10) is provided with a drainage flow channel (11); at least one flow channel opening (120) communicated with the outside is formed in the bottom guard body (10); and the flow channel opening (120) is communicated with the drainage flow channel (11).

Description

Underbody guard, battery pack and vehicle

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to the Chinese patent application filed with the State Intellectual Property Office of China on August 16, 2023, with application number 202322218010.X and titled “Underbody Guard, Battery Pack and Vehicle,” the entire contents of which are incorporated by reference into this application. Technical Field

[0003] The present application relates to the field of battery technology, and in particular to an underbody guard plate, a battery pack and a vehicle. Background Art

[0004] With the rapid development of the new energy vehicle market, the safety of battery packs, as one of the power sources of new energy vehicles, directly impacts vehicle performance and the driving experience. In related technologies, battery packs are typically located under the vehicle body. However, ground clearance is limited, and the underbody shield is located underneath the battery pack. This often leads to water entering the underbody shield when the vehicle passes through puddles or rains, causing water to accumulate. This can corrode the bottom of the tray, and if the accumulated water is not drained for a long time, it can cause water deterioration and odor, leading to customer complaints.

[0005] Public content

[0006] The present application aims to solve at least one of the technical problems existing in the prior art. To this end, the first purpose of the present application is to provide a bottom guard plate that can improve the structural strength of the bottom guard plate and reduce the risk of water accumulation on the bottom guard plate.

[0007] The second object of the present application is to provide a battery pack comprising the bottom guard plate described in the above embodiment.

[0008] The third object of the present application is to provide a vehicle comprising the battery pack described in the above embodiment.

[0009] According to the first aspect of the present application, the bottom guard plate includes: a bottom guard plate body, the bottom guard plate body is provided with a drainage channel, and at least one channel opening connected to the outside is formed on the bottom guard plate body, and the channel opening is connected to the drainage channel.

[0010] The underbody guard of the present invention, with drainage channels and openings provided on the underbody guard body, can quickly drain liquids from the underbody guard, preventing accumulated water from coming into contact with the tray and corroding it, and reducing the possibility of odors from prolonged accumulation of water. Furthermore, the underbody guard provides enhanced protection for the battery pack, reducing the risk of impact from foreign objects or hard objects during driving, thereby protecting the battery pack and reducing operating costs.

[0011] In some embodiments, the bottom guard plate body includes: a bottom wall and a side wall, the side wall is arranged on the outer periphery of the bottom wall, the side wall extends along a first direction away from the bottom wall, and the side wall protrudes from the bottom wall in a second direction, the second direction is perpendicular to the first direction, the side wall and the bottom wall jointly define the drainage channel, and at least one point of the side wall is disconnected to form the channel opening.

[0012] In some embodiments, a protruding structure is provided on the bottom wall, the protruding structure is spaced apart from the side wall, and the protruding structure is formed by a portion of the bottom wall protruding toward the second direction.

[0013] In some embodiments, the drainage channel includes a first drainage channel, which is arranged between the side wall and the protruding structure; the channel opening includes a first channel opening, which includes at least one notch in the side wall.

[0014] In some embodiments, the protrusion structure includes: at least one first protrusion, wherein the first protrusion extends in an annular manner along the circumference of the bottom wall.

[0015] In some embodiments, the drainage channel includes a second drainage channel, which is arranged in a space formed by the first protrusion; the channel opening includes a second channel opening, which includes at least one notch of the first protrusion, and the second channel opening connects the first drainage channel and the second drainage channel.

[0016] In some embodiments, the protrusion structure further includes: at least one second protrusion, the second protrusion extending in an annular manner along the circumference of the bottom wall, and the second protrusion is disposed between the first protrusion and the side wall.

[0017] In some embodiments, the drainage channel includes a third drainage channel, which is arranged between the second protrusion and the first protrusion; the channel opening includes a third channel opening, which includes at least one notch of the second protrusion, and the third channel opening connects the first drainage channel and the third drainage channel.

[0018] In some embodiments, the protrusion structure further includes: a third protrusion, the third protrusion extending along the first direction, the third protrusion intersecting with the first protrusion and / or the second protrusion; and / or the third protrusion extending along the third direction, the third protrusion intersecting with the first protrusion and / or the second protrusion, the first direction, the second direction and the third direction being orthogonal to each other.

[0019] In some embodiments, the protrusion structure further includes: a fourth protrusion, the fourth protrusion intersecting with the first protrusion and the third protrusion; or the fourth protrusion intersecting with the second protrusion and the third protrusion; or the fourth protrusion intersecting with the first protrusion, the second protrusion, and the third protrusion.

[0020] In some embodiments, the bottom guard plate body is rectangular, and there are multiple first flow openings, which include a first sub-flow opening and a second sub-flow opening, and the first sub-flow opening and the second sub-flow opening are respectively located at the same end on two opposite sides of the side wall.

[0021] In some embodiments, an edge of the bottom guard plate body is provided with at least one connecting portion, and the connecting portion is suitable for connecting to a protective plate at the bottom of the vehicle.

[0022] In some embodiments, the bottom guard plate further includes: a heat-insulating component, which is arranged on the first side of the second direction of the bottom guard plate body.

[0023] In some embodiments, the bottom guard plate further includes: a buffer layer, the buffer layer is arranged on the second side of the second direction of the bottom guard plate body, and the second side and the first side are respectively located on both sides of the second direction of the bottom guard plate body.

[0024] In some embodiments, the buffer layer is sprayed on the second side of the bottom guard plate body.

[0025] According to the battery pack of the second embodiment of the present application, it includes: a tray and a bottom guard plate, the bottom guard plate is the bottom guard plate described in any one of the above embodiments, the bottom guard plate is arranged at the bottom of the tray, and the side of the bottom guard plate body where the drainage channel is located faces the tray.

[0026] The vehicle according to the third embodiment of the present application includes the battery pack described in the above embodiment.

[0027] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become obvious from the description below, or will be learned through practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0029] FIG1 is a schematic diagram of a battery pack according to an embodiment of the present application.

[0030] FIG2 is a schematic diagram of a bottom guard plate according to an embodiment of the present application.

[0031] FIG3 is a schematic diagram of a bottom guard plate body according to an embodiment of the present application.

[0032] FIG4 is a bottom view of a battery pack according to an embodiment of the present application.

[0033] FIG5 is a schematic diagram of the installation of the bottom guard plate and the protective plate according to an embodiment of the present application.

[0034] FIG6 is a schematic block diagram of a vehicle according to an embodiment of the present application.

[0035] Reference numerals:

[0036] Vehicle 1000,

[0037] Battery pack 100, bottom guard plate 1, tray 2, protective plate 3,

[0038] Bottom guard plate body 10, drainage channel 11, channel opening 120, first drainage channel 111, second drainage channel 112, third drainage channel 113, first channel opening 12, first sub-channel opening 121, second sub-channel opening 122, bottom wall 13, side wall 14, protrusion structure 15, first protrusion 151, second protrusion 152, third protrusion 153, fourth protrusion 154, connecting portion 16,

[0039] Thermal insulation component 20 and buffer layer 30. DETAILED DESCRIPTION

[0040] The following describes in detail embodiments of the present application, and the embodiments described with reference to the accompanying drawings are exemplary.

[0041] The bottom guard plate 1 according to an embodiment of the present application is described below with reference to Figures 1 to 5, including a bottom guard plate body 10. The bottom guard plate 1 has a first direction A, a second direction C, and a third direction B. The first direction A corresponds to the length direction of the bottom guard plate 1, the second direction C corresponds to the height direction of the bottom guard plate 1, and the third direction B corresponds to the width direction of the bottom guard plate 1.

[0042] Specifically, as shown in FIG. 1 to FIG. 4 , the bottom guard plate body 10 is provided with a drainage channel 11 , and at least one channel opening 120 communicating with the outside is formed on the bottom guard plate body 10 , and the channel opening 120 is communicated with the drainage channel 11 .

[0043] In this embodiment, taking the bottom guard plate 1 disposed at the bottom of the tray 2 of the battery pack 100 as an example, the bottom guard plate 1 can be connected to the tray 2 at the bottom of the tray 2 by bolts, and the bottom guard plate 1 is used to protect the battery pack 100. A drainage channel 11 is provided on one side of the bottom guard plate body 10. Here, the drainage channel 11 is provided on the side of the bottom guard plate 1 adjacent to the tray 2 along the second direction C (i.e., the thickness direction of the bottom guard plate 1). When the vehicle is traveling through water, water is easily intruded into the bottom guard plate 1 located at the bottom of the vehicle. After the water in the bottom guard plate 1 is collected in the drainage channel 11, it is promptly discharged from the channel opening 120, keeping the bottom guard plate 1 dry and preventing prolonged water accumulation from corroding the bottom of the tray 2.

[0044] According to the bottom guard plate 1 of the present embodiment, by providing drainage channels 11 and channel openings 120 on the bottom guard plate body 10, liquids that enter the bottom guard plate 1 can be quickly drained, preventing accumulated water from coming into contact with the tray 2 and corroding it, thereby reducing the possibility of odors caused by prolonged accumulation of water. Furthermore, the bottom guard plate 1 provides enhanced protection for the battery pack 100, reducing the risk of impact from foreign objects or hard objects during driving, thereby protecting the battery pack 100 and reducing operating costs.

[0045] In some embodiments, as shown in Figures 2 and 3, the bottom guard plate body 10 includes a bottom wall 13 and a side wall 14. The side wall 14 is disposed on the outer periphery of the bottom wall 13. The side wall 14 extends away from the bottom wall 13 along a first direction A and protrudes from the bottom wall 13 in a second direction C. The first direction A and the second direction C are perpendicular. The side wall 14 and the bottom wall 13 jointly define a drainage channel 11. At least one portion of the side wall 14 is broken to form a channel opening 120.

[0046] The bottom guard plate body 10 has a first direction A, a second direction C and a third direction B, wherein the first direction A can be the left-right direction of the vehicle, the second direction C can be the height direction of the vehicle, and the third direction B can be the front-back direction of the vehicle. The side walls 14 on both sides along the first direction A extend in directions away from each other and protrude from the bottom wall 13, and the side walls 14 set along the third direction B extend in a direction away from the center of the bottom wall 13. The side walls 14 extending along the first direction A and the third direction B are connected. A flow channel opening 120 connected to the drainage channel 11 is formed on the side wall 14 so that the liquid in the drainage channel 11 can flow out in time. Thus, the bottom wall 13 and the side wall 14 define the drainage channel 11, which can facilitate the liquid in the bottom guard plate 1 to gather at the drainage channel 11, which is conducive to the accumulation of liquid inside the bottom guard plate 1 to flow out from the flow channel opening 120. At the same time, the side wall 14 extending along the first direction A can facilitate the installation of the bottom guard plate 1, and protruding from the bottom wall 13 along the second direction C can facilitate the formation of the drainage channel 11.

[0047] In some embodiments, as shown in FIG4 , a raised structure 15 is provided on the bottom wall 13, and the raised structure 15 is spaced apart from the sidewall 14. Thus, providing the raised structure 15 on the bottom wall 13 of the bottom guard plate 1 can increase the structural strength of the bottom guard plate 1, reduce the area of ​​water accumulation on the bottom guard plate 1, facilitate the flow of accumulated water toward the drainage channel 11, reduce the likelihood of accumulated water contacting the bottom of the tray 2, and prevent corrosion of the tray 2 by the accumulated water. When the bottom guard plate 1 is installed on the bottom of the tray 2, the raised structure 15 can abut against the bottom of the tray 2, preventing water from entering the raised structure 15 and effectively reducing the problem of odor caused by water accumulation on the bottom wall 13.

[0048] In some embodiments, the raised structure 15 is formed by a portion of the bottom wall 13 protruding in the second direction C. For example, the two sides of the bottom guard plate 1 in the thickness direction are respectively a first side and a second side. The sidewall 14 is provided on the first side of the bottom wall 13 and extends in the second direction C, i.e., the height direction, away from the second side. The raised structure 15 is formed by the second side of the bottom guard plate 1 protruding in the thickness direction toward the first side. Thus, the raised structure 15 protrudes in the second direction C, which increases the ground clearance of the bottom wall 13 on the side away from the sidewall 14. This prevents foreign objects from impacting the bottom guard plate 1 and causing deformation and puncture of the battery pack 100. This increases the safety and structural strength of the bottom guard plate 1 and ensures the vehicle's trafficability.

[0049] In some embodiments, as shown in Figures 3 and 4, the drainage channel 11 includes a first drainage channel 111, which is disposed between the side wall 14 and the protruding structure 15. The first drainage channel 111 is an annular channel disposed within the bottom guard plate body 10. The channel opening 120 includes a first channel opening 12, which includes at least one notch in the side wall 14. For example, the notch formed at the connection between the side wall 14 disposed along the first direction A and the side wall 14 disposed along the third direction B is the first channel opening 12, and the first channel opening 12 is located on the side wall 14 disposed along the first direction A, or the first channel opening 12 is opened on at least one of the two opposite side walls 14 in the first direction A, so that the first channel opening 12 and the first drainage channel 111 are in communication. After liquid enters the bottom guard plate body 10 , the liquid can be collected in the drainage channel 11 and then flow out from the first channel opening 12 , avoiding liquid accumulation in the bottom guard plate 1 , and avoiding corrosion and odor in the bottom guard plate 1 .

[0050] 4 , the protrusion structure 15 includes at least one first protrusion 151 extending annularly along the circumference of the bottom wall 13. The first protrusion 151 is designed in a U-shaped pattern on the bottom wall 13. The provision of the first protrusion 151 thus increases the structural strength of the bottom wall 13 and improves the bottom guard plate 1's resistance to impact deformation, thereby enabling the bottom guard plate 1 to better protect the tray 2.

[0051] In some embodiments, the drainage channel 11 includes a second drainage channel 112, which is disposed in the space surrounded by the first protrusion 151. That is, the area enclosed by the first protrusion 151 and the bottom wall 13 constitutes the second drainage channel 112. The channel opening 120 includes a second channel opening (not shown), which includes at least one notch in the first protrusion 151. The second channel opening can connect the first drainage channel 111 and the second drainage channel 112. The second channel opening can be disposed on the first protrusion 151 and on one of the two first protrusions 151 adjacent to the side wall 14, so that the first drainage channel 111 and the second drainage channel 112 can be connected, so that any accumulated liquid in the second drainage channel 112 can flow out, and the second drainage channel 112 defined between the two first protrusions 151 can be kept dry. Thus, multiple first protrusions 151 are arranged at intervals on the bottom wall 13, and the second drainage channel 112 is arranged between two first protrusions 151, which can increase the structural strength of the bottom wall 13. At the same time, through the setting of the second channel opening, the first drainage channel 111 and the second drainage channel 112 are connected, thereby increasing the rate of liquid outflow in the second drainage channel 112.

[0052] Optionally, referring to Figure 4 , the protrusion structure 15 further includes at least one second protrusion 152, which extends annularly along the circumference of the bottom wall 13 and is disposed between the first protrusion 151 and the sidewall 14. The second protrusion 152 is arranged in a U-shaped pattern, positioned on the bottom wall 13, outwardly of the first protrusion 151 and away from the center of the bottom wall 13, and spaced apart from the first protrusion 151. Thus, the provision of the second protrusion 152 can increase the structural strength of the bottom wall 13 and, in combination with the first protrusion 151, further enhance the stability of the protrusion structure 15.

[0053] In some embodiments, as shown in FIG3 , the drainage channel 11 includes a third drainage channel 113, which is disposed between the second protrusion 152 and the first protrusion 151. The channel opening 120 includes a third channel opening (not shown), which includes at least one notch in the second protrusion 152. Specifically, a notch is formed on the second protrusion 152, which is the third channel opening. There may be multiple notches, and the third channel opening can connect the first drainage channel 111 and the third drainage channel 113. Specifically, the second protrusion 152 is disposed between the first protrusion 151 and the sidewall 14, and the third drainage channel 113 is disposed between the second protrusion 152 and the sidewall 14. The third channel opening is disposed on the second protrusion 152. When liquid entering the third drainage channel 113 needs to be discharged, it can flow from the third channel opening into the first drainage channel 111, where it can then be collected and discharged from the first channel opening 12.

[0054] In this embodiment, the first protrusion 151 and the second protrusion 152 can be set at the same time, that is, the first drainage channel 111, the second drainage channel 112 and the third drainage channel 113 can be formed in the bottom guard plate 1 due to the setting of the protrusion structure 15, and the first drainage channel 111 and the third drainage channel 113 are connected through the third channel opening, and the second drainage channel 112 and the third drainage channel 113 are connected through the second channel opening, so that the accumulated liquid inside the protrusion structure 15 can flow out to the first drainage channel 111 for collection and outflow.

[0055] Furthermore, as shown in FIG3 , the protrusion structure 15 further includes a third protrusion 153. The third protrusion 153 extends along the first direction A and intersects with the first protrusion 151 and / or the second protrusion 152. That is, the third protrusion 153 extends along the first direction A and intersects with the annular first protrusion 151 and the annular second protrusion 152, respectively, and the third protrusion 153 protrudes beyond the edge of the second protrusion 152. Alternatively, the third protrusion 153 extends beyond the edge of the first protrusion 151 along the first direction A and is spaced apart from the second protrusion 152, in which case both ends of the third protrusion 153 are located between the first protrusion 151 and the second protrusion 152. Alternatively, the third protrusion 153 is spaced apart from the first protrusion 151 along the first direction A. At this time, the third protrusion 153 extends along the first direction A, and when the third protrusion 153 is connected to the first protrusion 151 and the second protrusion 152, the first protrusion 151 and the second protrusion 152 are symmetrically distributed along the third direction B about the first protrusion 151.

[0056] The third protrusion 153 extends along a third direction B, intersecting the first protrusion 151 and / or the second protrusion 152. The first direction A, the second direction C, and the third direction B are mutually orthogonal. That is, the third protrusion 153 may extend along a third direction B perpendicular to the first direction A, intersecting one of the first protrusion 151 and the second protrusion 152. Alternatively, in this embodiment, the third protrusion 153 intersects both the first protrusion 151 and the second protrusion 152, with both ends of the third protrusion 153 extending beyond the edge of the second protrusion 152 along the third direction B.

[0057] In this embodiment, a third protrusion 153 is provided along the first direction A and the third direction B. The two third protrusions 153 are distributed in a cross shape and are respectively connected to the first protrusion 151 and the second protrusion 152 to improve the structural strength of the protrusion structure 15.

[0058] In some embodiments, as shown in FIG4 , the protrusion structure 15 further includes a fourth protrusion 154. The fourth protrusion 154 is disposed between two adjacent third protrusions 153. The fourth protrusion 154 intersects the first protrusion 151 and the third protrusion 153; or the fourth protrusion 154 intersects the second protrusion 152 and the third protrusion 153. Alternatively, the fourth protrusion 154 intersects the first protrusion 151, the second protrusion 152, and the third protrusion 153. For example, in this embodiment, there are two third protrusions 153 and four fourth protrusions 154. The two fourth protrusions 154 are arranged in an intersecting pattern on the bottom wall 13. The two fourth protrusions 154 and the two third protrusions 153 are alternately arranged within the bottom guard plate 1 along the circumference of the bottom guard plate 1. The fourth protrusion 154 passes through the intersection of the two third protrusions 153 and is connected to the first protrusion 151 and the second protrusion 152. The arrangement of the first protrusion 151 and the second protrusion 152 can be designed as needed, and one or both of the first protrusion 151 and the second protrusion 152 can be provided. The plurality of third protrusions 153 and the plurality of fourth protrusions 154 are arranged in a cross-shaped pattern on the bottom wall 13. Thus, the arrangement of the fourth protrusions 154 can improve the strength of the protrusion structure 15, thereby making the structural strength of the bottom wall 13 more uniform and enhancing the bottom wall 13's ability to withstand impacts.

[0059] In some embodiments, the bottom guard plate body 10 is rectangular, and there are multiple first flow channel openings 12. The multiple first flow channel openings 12 include a first sub-flow channel opening 121 and a second sub-flow channel opening 122. The first sub-flow channel opening 121 and the second sub-flow channel opening 122 are respectively located at the same end on opposite sides of the side wall 14. For example, the first sub-flow channel opening 121 and the second sub-flow channel opening 122 are both located at the same end of the bottom guard plate 1 along the third direction B, and the first sub-flow channel opening 121 and the second sub-flow channel opening 122 are located on opposite sides of the bottom guard plate 1 along the first direction A, with the first sub-flow channel opening 121 and the second sub-flow channel opening 122 facing each other. Therefore, the provision of the first sub-flow channel opening 121 and the second sub-flow channel opening 122 can facilitate the timely discharge of liquid in the drainage channel 11, thereby increasing the rate at which liquid in the drainage channel 11 flows out.

[0060] In some embodiments, as shown in Figures 4 and 5 , the edge of the underbody guard body 10 is provided with at least one connecting portion 16 , which is suitable for connecting to the fender 3 on the underbody of the vehicle. In this embodiment, the connecting portion 16 is provided on one side of the underbody guard body 10 along the third direction B. Multiple connecting portions 16 are provided, spaced apart along the first direction A. Here, the connecting portions 16 are used to connect to the fender 3 on the underbody of the vehicle, saving bracket costs, optimizing space under the vehicle, and improving vehicle assembly efficiency. The connecting portions 16 can be connected to the fender 3 via bolts.

[0061] In some embodiments, as shown in Figures 1 and 2, the bottom guard plate 1 further includes: a thermal insulation component 20. The thermal insulation component 20 is provided on the first side of the bottom guard plate body 10 along the second direction C. The thermal insulation component 20 abuts against the raised structure 15. When the bottom guard plate 1 and the tray 2 are installed, the thermal insulation component 20 abuts between the raised structure 15 and the bottom of the tray 2. The thermal insulation component 20 can be connected to the raised structure 15 by bonding. In this embodiment, there are two thermal insulation components 20, and the two thermal insulation components 20 are spaced apart along the first direction A. The leaked portion between the two thermal insulation components 20 abuts against the bottom of the tray 2. The material of the thermal insulation component 20 can be microporous foamed polypropylene. Therefore, when the thermal insulation member 20 is disposed between the bottom guard plate 1 and the bottom of the tray 2, the thermal insulation member 20 is squeezed and has the function of compressing and blocking water, so that liquid entering the protective plate 3 does not flow into the interior of the protruding structure 15. Alternatively, any accumulated liquid entering the protruding structure 15 can flow from the second drainage channel 112 or the third drainage channel 113 to the first drainage channel 111, facilitating the entry of the liquid into the drainage channel 11 and then out through the first channel opening 12. At the same time, deformation of the bottom guard plate 1 of the battery pack 100 caused by the impact of accumulated water can be effectively reduced.

[0062] Optionally, referring to Figure 2 , the bottom guard plate 1 further includes a buffer layer 30 disposed on the second side of the bottom guard plate body 10 in the second direction C. The second side and the first side are respectively located on opposite sides of the bottom guard plate body 10 in the second direction C. The buffer layer 30 can be spray-bonded to the second side of the bottom guard plate 1, which is the side away from the thermal insulation element 20, to enhance the structural strength of the bottom guard plate 1.

[0063] According to the battery pack 100 of the second embodiment of the present application, it includes: a tray 2 and a bottom guard plate 1. The bottom guard plate 1 is the bottom guard plate 1 of any one of the above embodiments. The bottom guard plate 1 is arranged at the bottom of the tray 2, and the side of the bottom guard plate body 10 of the bottom guard plate 1 where the drainage channel 11 is located faces the tray 2.

[0064] 1-5 , the bottom guard plate 1 is provided at the bottom of the tray 2 to provide increased protection for the battery pack 100 and prevent water accumulation at the bottom of the tray 2 from corroding the tray 2. A protruding structure 15 is provided on one side of the bottom guard plate 1 adjacent to the tray 2 along the second direction C (i.e., the thickness direction of the bottom guard plate 1). The protruding structure 15 includes a first protrusion 151, a second protrusion 152, a third protrusion 153, and a fourth protrusion 154. Multiple first protrusions 151 and multiple second protrusions 152 form multiple U-shaped structures on the bottom wall 13 to strengthen the structure. Multiple third protrusions 153 and multiple fourth protrusions 154 form multiple M-shaped structures on the bottom wall 13 to strengthen the structure. Multiple first protrusions 151, second protrusions 152, third protrusions 153, and fourth protrusions 154 are connected to improve the structural strength of the bottom guard plate body 10. Raised structure 15 projects from the side of bottom wall 13 of bottom guard plate body 10 away from tray 2 toward the side adjacent to tray 2. Thermal insulation 20 is bonded to raised structure 15 and positioned between bottom guard plate 1 and tray 2. This prevents liquid entering bottom guard plate 1 from flowing toward raised structure 15, directing it toward drainage channel 11 and out through first channel opening 12. A buffer layer 30 is sprayed onto the side of bottom guard plate 1 away from tray 2 to enhance its resistance to deformation and wear.

[0065] According to the battery pack 100 of the present embodiment, drainage channel 11 and channel opening 120 are provided on bottom guard plate 1, allowing liquid that enters bottom guard plate 1 to promptly flow out through first channel opening 12. This reduces the risk of water accumulation on bottom guard plate 1 and the impact of water accumulation on bottom guard plate 1, which could cause deformation of the bottom of battery pack 100. This prevents corrosion of tray 2 and increases the safety of battery pack 100. Furthermore, bottom guard plate 1 integrates connection portion 16 for mounting protective plate 3 to protect the vehicle's chassis, saving brackets and optimizing space under the vehicle.

[0066] The vehicle 1000 according to the third embodiment of the present application includes the battery pack 100 in the above embodiment, as shown in FIG6 .

[0067] According to the vehicle 1000 of the embodiment of the present application, by setting a bottom guard plate 1 at the bottom of the battery pack 100, the structural strength of the bottom guard plate 1 can be increased, so that the bottom guard plate 1 can better protect the tray 2 of the battery pack 100 and the batteries inside the tray 2. The raised structure 15 stamped on the bottom guard plate 1 can increase the ground clearance of the vehicle 1000 and improve the safety of the vehicle 1000.

[0068] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present 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 operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0069] In the description of the present application, "first feature" and "second feature" may include one or more of the features. In the description of the present application, "plurality" means two or more. In the description of the present application, the first feature being "above" or "below" the second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact through another feature between them. In the description of the present application, the first feature being "above", "above" and "above" the second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is higher in level than the second feature.

[0070] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "illustrative embodiments," "example," "specific example," or "some examples" means that a specific feature, structure, material, or characteristic described in conjunction with the embodiment or example is included in at least one embodiment or example of the present application. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example.

[0071] Although the embodiments of the present application have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions, and variations may be made to the embodiments without departing from the principles and intent of the present application, and that the scope of the present application is defined by the claims and their equivalents.

Claims

1. A bottom guard plate (1), characterized in that: include: A bottom guard plate body (10), wherein the bottom guard plate body (10) is provided with a drainage channel (11), and at least one channel opening (120) communicating with the outside is formed on the bottom guard plate body (10), and the channel opening (120) is communicated with the drainage channel (11).

2. The bottom guard plate (1) according to claim 1, characterized in that: The bottom guard plate body (10) comprises: a bottom wall (13); and a side wall (14), the side wall (14) being arranged on the outer periphery of the bottom wall (13), the side wall (14) extending in a first direction in a direction away from the bottom wall (13), and the side wall (14) protruding from the bottom wall (13) in a second direction, the second direction being perpendicular to the first direction, the side wall (14) and the bottom wall (13) jointly defining the drainage channel (11); At least one portion of the side wall (14) is broken to form the flow channel opening (120).

3. The bottom guard plate (1) according to claim 2, characterized in that: The bottom wall (13) is provided with a protruding structure (15), the protruding structure (15) and the side wall (14) are spaced apart from each other, and the protruding structure (15) is formed by a portion of the bottom wall (13) protruding toward the second direction.

4. The bottom guard plate (1) according to claim 3, characterized in that: The liquid drainage channel (11) comprises a first liquid drainage channel (111), wherein the first liquid drainage channel (111) is arranged between the side wall (14) and the protruding structure (15); The flow channel opening (120) comprises a first flow channel opening (12), and the first flow channel opening (12) comprises at least one notch of the side wall (14).

5. The bottom guard plate (1) according to claim 4, characterized in that: The protruding structure (15) comprises: At least one first protrusion (151), the first protrusion (151) extending in an annular shape along the circumference of the bottom wall (13).

6. The bottom guard plate (1) according to claim 5, characterized in that The liquid discharge channel (11) comprises a second liquid discharge channel (112), and the second liquid discharge channel (112) is arranged in a space surrounded by the first protrusion (151); The flow channel opening (120) comprises a second flow channel opening, the second flow channel opening comprises at least one notch of the first protrusion (151), and the second flow channel opening is connected to the first liquid discharge channel (111) and the second liquid discharge channel (112).

7. The bottom guard plate (1) according to claim 5 or 6, characterized in that: The protruding structure (15) further comprises: At least one second protrusion (152), the second protrusion (152) extending in an annular shape along the circumference of the bottom wall (13), the second protrusion (152) being arranged between the first protrusion (151) and the side wall (14).

8. The bottom guard plate (1) according to claim 7, characterized in that The liquid discharge channel (11) comprises a third liquid discharge channel (113), and the third liquid discharge channel (113) is arranged between the second protrusion (152) and the first protrusion (151); The flow channel opening (120) comprises a third flow channel opening, the third flow channel opening comprises at least one notch of the second protrusion (152), and the third flow channel opening is connected to the first liquid discharge channel (111) and the third liquid discharge channel (113).

9. The bottom guard plate (1) according to claim 7 or 8, characterized in that: The protrusion structure (15) further includes: a third protrusion (153), the third protrusion (153) extending along the first direction, the third protrusion (153) intersecting with the first protrusion (151) and / or the second protrusion (152); and / or The third protrusion (153) extends along a third direction, the third protrusion (153) intersects with the first protrusion (151) and / or the second protrusion (152), and the first direction, the second direction and the third direction are orthogonal to each other.

10. The bottom guard plate (1) according to claim 9, characterized in that The protrusion structure (15) further includes: a fourth protrusion (154), wherein the fourth protrusion (154) intersects with the first protrusion (151) and the third protrusion (153); or The fourth protrusion (154) intersects with the second protrusion (152) and the third protrusion (153); or The fourth protrusion (154) intersects with the first protrusion (151), the second protrusion (152), and the third protrusion (153).

11. The bottom guard plate (1) according to any one of claims 4 to 10, characterized in that: The bottom guard plate body (10) is rectangular; There are a plurality of the first flow channel openings (12), and the plurality of the first flow channel openings (12) include a first sub-flow channel opening (121) and a second sub-flow channel opening (122), and the first sub-flow channel opening (121) and the second sub-flow channel opening (122) are respectively located at the same end of two sides of the side wall (14) that are opposite to each other.

12. The bottom guard plate (1) according to any one of claims 1 to 11, characterized in that: The edge of the bottom guard plate body (10) is provided with at least one connecting portion (16), and the connecting portion (16) is suitable for connecting to a protective plate (3) at the bottom of a vehicle.

13. The bottom guard plate (1) according to any one of claims 1 to 12, characterized in that: The bottom guard plate (1) further comprises: A heat-insulating component (20), the heat-insulating component (20) being arranged on a first side in a second direction of the bottom guard plate body (10); a buffer layer (30), the buffer layer (30) being arranged on a second side of the bottom guard plate body (10) in a second direction, the second side and the first side being respectively located on two sides of the bottom guard plate body (10) in the second direction; The buffer layer (30) is sprayed on the second side of the bottom guard plate body (10).

14. A battery pack (100), characterized in that: include: Tray (2); and A bottom guard plate (1), the bottom guard plate (1) is a bottom guard plate (1) according to any one of claims 1 to 13, the bottom guard plate (1) is arranged at the bottom of the tray (2), and the side where the drainage channel (11) of the bottom guard plate body (10) of the bottom guard plate (1) is located faces the tray (2).

15. A vehicle (1000), characterized in that: Comprising the battery pack (100) according to claim 14.

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