Drain, battery pack, and vehicle

Abstract

The application provides a liquid discharge piece, a battery pack and a vehicle, and relates to the technical field of batteries. The liquid discharge piece is arranged on the outer box wall of a battery box and is located in an assembly gap. The liquid discharge piece has a capillary structure configured to absorb and discharge liquid in the assembly gap. In this way, by arranging the liquid discharge piece in the assembly gap, the capillary structure of the liquid discharge piece can actively and in real time absorb and discharge the liquid in the assembly gap, thereby reducing the accumulation of liquid in the assembly gap and avoiding corrosion of the battery box by the liquid, so as to improve the reliability and stability of the battery pack.

Description

Technical Field

[0001] This application relates to the field of battery technology, and in particular to a drain device, a battery pack, and a vehicle. Background Technology

[0002] In recent years, new energy vehicles have received increasing attention and favor from the public due to their environmental friendliness and economy.

[0003] In related technologies, new energy vehicles include a chassis and a battery pack, with the battery pack positioned between the chassis and the underbody protection plate. There are assembly gaps between the battery pack and the chassis, and between the battery pack and the underbody protection plate. These gaps can easily trap moisture and other substances. With prolonged vehicle use, this moisture and other substances can corrode the battery pack casing, leading to a decrease in the battery pack's safety.

[0004] Therefore, there is an urgent need for a battery pack that can improve safety. Utility Model Content

[0005] This application provides a drain component, a battery pack, and a vehicle, which drains liquid from the assembly gap, thereby improving the safety of the battery pack and the vehicle.

[0006] To achieve the above objectives, this application adopts the following technical solution:

[0007] This application provides a draining component for use in a battery box, wherein the battery box is used to connect with a structural component and form an assembly gap;

[0008] The draining component is disposed on the outer wall of the battery box and located in the assembly gap;

[0009] The draining component has a capillary structure configured to draw out liquid from the assembly gap.

[0010] In some embodiments, the capillary structure includes a capillary suction section and a siphon discharge section; the capillary suction section has a suction port, and the capillary suction section is configured to adsorb fluid within the assembly gap through the suction port;

[0011] The siphon drainage section and the capillary suction section are connected to form a fluid channel, and the fluid in the fluid channel is discharged through the end of the siphon drainage section.

[0012] In some embodiments, on the plane containing the first plane, the orthographic projection of the capillary liquid absorption portion is located within the orthographic projection of the siphon liquid discharge portion;

[0013] The first plane is perpendicular to the thickness direction of the draining component.

[0014] In some embodiments, the fluid channel extends along a first direction that intersects the thickness direction of the drain element.

[0015] In some embodiments, the capillary structure includes one siphon drainage section and at least two capillary suction sections, with the at least two capillary suction sections spaced apart around the siphon drainage section.

[0016] In some embodiments, the size of the capillary suction portion near the siphon discharge portion is larger than the size of the capillary suction portion away from the siphon discharge portion.

[0017] In some embodiments, the number of capillary structures is multiple, and the multiple capillary structures are arranged at intervals along the second direction on the draining element;

[0018] The second direction, the first direction, and the thickness direction of the draining component are perpendicular to each other.

[0019] In some embodiments, the number of capillary structures is multiple, and the multiple capillary structures form two capillary groups; each capillary group includes at least two capillary structures spaced apart along a second direction.

[0020] The two capillary groups are spaced apart along the thickness direction of the draining component.

[0021] In some embodiments, the draining component has an adsorption surface perpendicular to the thickness direction of the draining component; the capillary suction portion has an opening located on the adsorption surface;

[0022] The area of ​​the opening is S1, and the area of ​​the adsorption surface is S2. S1 and S2 satisfy: S1 = (1%~80%) × S2.

[0023] In some embodiments, the draining component includes a polyvinyl chloride component, a high-density polyethylene component, a glass fiber component, a carbon fiber component, or a basalt fiber component.

[0024] In some embodiments, the siphon drainage section has an inclined tendency along the thickness direction of the drainage member.

[0025] In some embodiments, along the first direction, the height of the siphon drainage section near the middle of the drainage member is higher than the height of the siphon drainage section near the end of the drainage member.

[0026] Secondly, embodiments of this application provide a battery pack for use in a vehicle, the battery pack comprising:

[0027] A battery box, which is used to connect to the vehicle and form an assembly gap with the structural components of the vehicle;

[0028] A drain component is disposed on the outer wall of the battery box and located in the assembly gap; wherein the drain component is the drain component described in any one of the first aspects.

[0029] In some embodiments, the drain device is located on the outer side of the top wall of the battery box;

[0030] And / or, the draining component is located on the outer side of the bottom wall of the battery box.

[0031] In some embodiments, along the height direction of the battery box, the end of the siphon drainage section of the draining member faces the bottom of the battery box.

[0032] In some embodiments, the outer wall of the battery box is provided with a first liquid collecting element, which is located on the side where the end of the siphon drainage section of the draining element is located, and is used to collect the liquid discharged from the end of the siphon drainage section.

[0033] Thirdly, this application provides a vehicle, comprising:

[0034] Structural components;

[0035] A battery pack, wherein the battery pack is any one of the battery packs described in the second aspect, wherein the battery box of the battery pack and the structural component are connected and form an assembly gap.

[0036] In some embodiments, the vehicle includes:

[0037] Chassis, the chassis forming the structural component;

[0038] And / or, a bottom guard plate, which forms the structural member.

[0039] In some embodiments, the vehicle further includes a second liquid collection unit, which corresponds to the side where the end of the siphon drain section in the battery pack is located, and is used to collect the liquid discharged from the end of the siphon drain section.

[0040] The drain device, battery pack, and vehicle provided in this application are configured such that the drain device is located on the outer wall of the battery box and within the assembly gap. The drain device has a capillary structure configured to draw in and drain liquid from the assembly gap. Thus, by placing the drain device within the assembly gap, the capillary structure of the drain device actively and in real time draws out and drains the liquid from the assembly gap, reducing the accumulation of liquid in the assembly gap and preventing corrosion of the battery box, thereby improving the reliability and stability of the battery pack. Attached Figure Description

[0041] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0042] Figure 1 This is a schematic diagram showing the connection between the drain component and the battery box provided in an embodiment of this application;

[0043] Figure 2 A schematic diagram of the draining component provided in an embodiment of this application;

[0044] Figure 3 for Figure 2 Enlarged view of a local structure in section I;

[0045] Figure 4 This is a capillary structure in the drainage component provided in the embodiments of this application;

[0046] Figure 5 The capillary structure two in the drainage component provided in the embodiments of this application;

[0047] Figure 6 The capillary structure three in the drainage component provided in the embodiments of this application;

[0048] Figure 7 The capillary structure four in the drainage component provided in the embodiments of this application;

[0049] Figure 8 The capillary structure five in the drainage component provided in the embodiments of this application;

[0050] Figure 9 Sixth, the capillary structure in the drainage component provided in the embodiments of this application.

[0051] Explanation of reference numerals in the attached figures:

[0052] 100-drainage parts;

[0053] 110 - Capillary structure; 111 - Capillary suction section; 112 - Siphon discharge section; 113 - First capillary group; 114 - Second capillary group;

[0054] 200 - Battery box; 210 - Top cover; 220 - Battery tray;

[0055] 300 - Bottom guard plate. Detailed Implementation

[0056] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0057] This application provides a vehicle including a structural component and a battery pack. The battery box 200 of the battery pack is connected to the structural component, forming an assembly gap. It should be noted that the vehicle structure provided in this application embodiment is a common vehicle structure known to those skilled in the art, and will not be described in detail here.

[0058] In some embodiments, the vehicle includes a chassis forming a structural component, and the battery box 200 is attached to the bottom of the chassis. This creates an assembly gap between the top of the battery box 200 and the chassis.

[0059] It should be noted that the battery box 200 can be bolted to the chassis. The high-strength bolts not only ensure a secure connection but also create a detachable connection, allowing the battery box 200 to be disassembled when necessary. Alternatively, the battery box 200 can also be connected to the chassis via snap-fit, welding, or other methods; however, this embodiment does not require such a connection.

[0060] See Figure 1 In some embodiments, the vehicle includes a floor guard 300 disposed at the bottom of the battery box 200. In this embodiment, the floor guard 300 forms a structural component. It is easy to understand that an assembly gap is formed between the bottom of the battery box 200 and the floor guard 300.

[0061] It should be noted that the connection method between the bottom guard plate 300 and the battery box 200 can be the same as the connection method between the battery box 200 and the chassis, and will not be described again in this section.

[0062] In some embodiments, the battery box 200 is disposed between the vehicle chassis and the underbody 300, and an assembly gap is formed between the battery box 200 and the vehicle floor, and between the battery box 200 and the underbody 300.

[0063] See Figure 1 The battery box 200 in this embodiment includes a top cover 210 and a battery tray 220, with the top cover 210 disposed on top of the battery tray 220. The top cover 210 and the battery tray 220 can be connected by snap-fit, bolts, or other means, without limitation.

[0064] As will be understood by those skilled in the art, when the battery box 200 is fitted with the vehicle, there is an assembly gap between the top cover 210 and the chassis, and / or, there is an assembly gap between the battery tray 220 and the underbody protection plate 300.

[0065] As vehicles are used, due to capillary action, liquid can be drawn into the assembly gaps. This liquid comes into contact with structural components and the outer wall of the battery pack 200. Prolonged accumulation of this liquid in the assembly gaps can lead to the absorption of sulfur dioxide, chloride ions, and other substances from the atmosphere. These substances combine to form corrosive acidic compounds. Combined with the effects of oxygen and carbon dioxide, the liquid will corrode the battery pack 200, affecting its reliability and safety. Therefore, there is an urgent need for a battery pack that can improve reliability and safety.

[0066] To address this issue, the battery pack in this embodiment includes a battery box 200 and a drain component 100. The connection between the battery box 200 and the vehicle's structural components creates an assembly gap. The drain component 100 is located on the outer wall of the battery box 200 within this assembly gap. The drain component 100 drains liquid from the assembly gap, preventing corrosion of the battery box 200 and thus improving the reliability and safety of the battery pack. As will be readily understood by those skilled in the art, when such a battery pack is applied to a vehicle, it can also improve the vehicle's reliability and safety.

[0067] The following is combined with Figures 1 to 9 The specific implementation structure of the draining component 100 in the embodiments of this application will be described.

[0068] In this embodiment, the drain component 100 is disposed on the outer wall of the battery box 200 and located in the assembly gap. The drain component 100 has a capillary structure 110, which is configured to suck and drain liquid in the assembly gap. Thus, by providing the drain component 100 in the assembly gap, the capillary structure 110 of the drain component 100 actively and in real time sucks out and drains the liquid in the assembly gap, reducing the accumulation of liquid in the assembly gap, thereby avoiding corrosion of the battery box 200 by the liquid, and improving the reliability and stability of the battery pack.

[0069] It should be noted that the drain component 100 can be located between the top cover 210 of the battery box 200 and the chassis of the vehicle, that is, the drain component 100 is located on the outer side of the top wall of the battery box 200; and / or, between the battery tray 220 of the battery box 200 and the underbody protection plate 300 of the vehicle, that is, the drain component 100 is located on the outer side of the bottom wall of the battery box 200.

[0070] For example, the drain component 100 located between the top cover 210 and the chassis has a capillary structure 110 whose suction port may face the chassis and / or the top cover 210. The drain component 100 located between the battery tray 220 and the bottom guard plate 300 has a capillary structure 110 whose suction port may face the battery tray 220 and / or the bottom guard plate 300.

[0071] See Figure 2 and Figure 3 As an optional implementation, the capillary structure 110 includes a capillary suction section 111 and a siphon discharge section 112; the capillary suction section 111 has a suction port and is configured to absorb fluid in the assembly gap through the suction port; the siphon discharge section 112 and the capillary suction section 111 are connected to form a fluid channel, and the fluid in the fluid channel is discharged through the end of the siphon discharge section 112.

[0072] As will be readily understood by those skilled in the art, this section will use the example of the draining component 100 being installed on the top cover 210 of the battery box 200 for illustration.

[0073] Combination Figure 1 , Figure 2 , Figure 3 The drain component 100 is installed on the upper cover 210 of the battery box 200 and is located between the upper cover 210 and the chassis (not shown in the figure). The capillary suction section 111 and the siphon drain section 112 are connected. The capillary suction section 111 uses capillary action to allow liquid to enter the siphon drain section 112 through the suction port. The siphon drain section 112 then draws in the liquid until it is full, and finally, the liquid flows out through its end. In this way, the capillary structure 110 creates a spontaneous suction and drain action, quickly draining the liquid from the assembly gaps. This avoids liquid retention in the assembly gaps and prevents corrosion of the battery box 200 and structural components, thereby improving the reliability and safety of the battery pack and the vehicle.

[0074] It should be noted that, see Figure 4 , Figure 8 The capillary suction section 111 can be a groove-shaped structure. See also... Figure 5 , Figure 6 , Figure 7 and Figure 9 The capillary suction section 111 can also be a perforated structure, and the siphon drainage section 112 can also be a grooved or perforated structure, to form a cavity for containing liquid. Correspondingly, the shape of the suction port can be a perforated or grooved structure, which is not required in this embodiment.

[0075] It should be noted that the suction port of the capillary suction part 111 may face only the chassis, or only the battery box 200, or the suction port may face both the battery box 200 and the chassis at the same time.

[0076] In some embodiments, the fluid channel extends along a first direction that intersects the thickness direction of the drain element 100.

[0077] As those skilled in the art will understand, the first direction intersects with the thickness direction of the drain component 100, and the first direction can be the length direction or the width direction of the drain component 100. This application embodiment uses the length direction of the drain component 100 as an example for illustration.

[0078] In the drain component 100, the fluid channel extends along a first direction. In this embodiment, the fluid channel extends in the first direction in a curved manner, or the fluid channel extends in the first direction in a straight manner. This embodiment does not limit this.

[0079] It should still be noted that, see Figure 2 , Figure 3 , Figure 4 , Figure 8 and Figure 9 The number of capillary liquid absorption sections 111 can be one, and one capillary liquid absorption section 111 is connected to the siphon liquid discharge section 112.

[0080] See Figure 6 and Figure 7 In one optional embodiment, the capillary structure 110 includes a siphon drainage section 112 and at least two capillary suction sections 111, with the at least two capillary suction sections 111 spaced apart around the siphon drainage section 112. This improves the washing efficiency by using at least two capillary suction sections 111, allowing liquid to be quickly drawn into the siphon drainage section 112 and quickly discharged through it, thereby improving the reliability and safety of the battery pack. Furthermore, the at least two capillary suction sections 111 spaced apart around the siphon drainage section 112 in this embodiment form a redundant design, ensuring that liquid is removed from multiple locations.

[0081] For example, see Figure 6 In this embodiment, there can be two capillary liquid absorption parts 111. The two capillary liquid absorption parts 111 are disposed on the periphery of the siphon liquid discharge part 112 and are both connected to the siphon liquid discharge part 112.

[0082] See Figure 7 In this embodiment, there are multiple capillary liquid absorption sections 111, which are spaced apart on the periphery of the siphon liquid discharge section 112 and can all be connected to the siphon liquid discharge section 112.

[0083] It should be noted that the different structures of the capillary structure 110 in this application can be combined and formed on the draining component 100. The embodiments of this application do not limit the combination of the various capillary structures 110.

[0084] Combination Figure 7 The size of the capillary suction section 111 near the siphon discharge section 112 is larger than the size of the capillary suction section 111 away from the siphon discharge section 112. It is easy to understand that the capillary suction section 111 is used to absorb liquid, and this arrangement facilitates the washing of the capillary suction section 111 with liquid.

[0085] During battery pack use, mud, sand, or small pebbles may accumulate in the assembly gaps. These particles can enter the siphon drainage section 112, easily causing blockage. To solve this problem, see [link to relevant documentation]. Figures 3 to 9 On the plane containing the first plane, the orthographic projection of the capillary liquid absorption section 111 is located within the orthographic projection of the siphon liquid discharge section 112; wherein, the first plane is perpendicular to the thickness direction of the liquid discharge component 100.

[0086] It is understood, as those skilled in the art will understand, that the first plane can be a surface extending parallel to the draining component 100 along the first direction. The radial dimension of the siphon draining section 112 is larger than the radial dimension of the capillary suction section 111. Mud / sand / dust particles in the liquid will naturally settle due to gravity, and the particles will not flow into the capillary suction section 111 with the liquid, thus ensuring that the siphon draining section 112 of the draining component 100 will not be blocked.

[0087] See Figure 2 In some embodiments, there are multiple capillary structures 110, which are arranged at intervals along the second direction on the draining member 100; the second direction, the first direction and the thickness direction of the draining member 100 are perpendicular to each other.

[0088] It should be noted that when the first direction is the length direction of the drain component 100, the second direction is the width direction of the drain component 100; when the first direction is the width direction of the drain component 100, the second direction is the length direction of the drain component 100. This application embodiment is described with the first direction being the length direction of the drain component 100 and the second direction being the width direction of the drain component 100.

[0089] In this embodiment, the number of capillary structures 110 can be two, three, four, or more; the specific number of capillary structures 110 is not limited in this embodiment. When multiple capillary structures 110 are arranged at intervals along the second direction, the spacing between adjacent capillary structures 110 along the second direction can be the same or different; this embodiment does not impose any limitation on this. By using multiple capillary structures 110, the drainage efficiency of the drain component 100 is increased, preventing liquid accumulation in the assembly gaps and reducing liquid corrosion of the battery box 200 and / or structural components, thereby improving the reliability and safety of the battery pack and ensuring the reliability and safety of the vehicle when the battery pack is used.

[0090] When there are multiple capillary structures 110, there are many ways to arrange them on the draining component 100. See [link / reference] Figure 9 As one alternative implementation, multiple capillary structures 110 form two capillary groups; each capillary group includes at least two capillary structures 110 spaced apart along a second direction; the two capillary groups are spaced apart along the thickness direction of the draining member 100.

[0091] To facilitate understanding of the embodiments of this application by those skilled in the art, two capillary groups are defined as the first capillary group 113 and the second capillary group 114. The number of capillary structures 110 in the first capillary group 113 and the second capillary group 114 can be two, three, or more. This application embodiment does not require a specific number of capillary structures 110 in the first capillary group 113 and the second capillary group 114. Furthermore, the number of capillary structures 110 in the first capillary group 113 can be the same as or different from the number of capillary structures 110 in the second capillary group 114.

[0092] As an optional implementation, the number of capillary structures 110 in the first capillary group 113 is the same as the number of capillary structures 110 in the second capillary group 114. The spacing along the second direction between two adjacent capillary structures 110 in the first capillary group 113 can be the same or different, and the spacing along the second direction between two adjacent capillary structures 110 in the second capillary group 114 can also be the same or different. The spacing along the second direction between two adjacent capillary structures 110 in the first capillary group 113 can be the same or different from the spacing along the second direction between two adjacent capillary structures 110 in the second capillary group 114; this embodiment does not impose any limitations on this.

[0093] In this embodiment, by arranging two capillary groups at intervals along the thickness direction of the drain component 100, the proportion of fluid channels in the drain component 100 is increased, the draining efficiency of the drain component 100 is improved, liquid accumulation in the assembly gap is avoided, and the corrosion of the battery box 200 and / or structural components by the liquid is reduced, thereby improving the reliability and safety of the battery pack, and ensuring the reliability and safety of the vehicle when the battery pack is applied to the vehicle.

[0094] For example, the draining component 100 has an adsorption surface perpendicular to its thickness direction; the capillary suction portion 111 has an opening on the adsorption surface. The area of ​​the adsorption opening is S1, and the area of ​​the adsorption surface is S2, where S1 and S2 satisfy: S1 = (1%~80%) × S2. Thus, by increasing the suction area of ​​the draining component 100, the draining performance of the draining component 100 is enhanced.

[0095] For example, S1 = 1% × S2, S1 = 15% × S2, S1 = 20% × S2, S1 = 35% × S2, S1 = 80% × S2, etc., and this application embodiment does not limit this. It should be noted that S1 / S2 only needs to satisfy the above-mentioned numerical range of 1% to 80%.

[0096] In some embodiments, the drain component 100 includes a polyvinyl chloride (PVC) component, a high-density polyethylene (HDPE) component, a glass fiber component, a carbon fiber component, or a basalt fiber component. It should be noted that the drain component 100 in the embodiments of this application can be a PVC component, or a HDPE component, or a glass fiber component, or a carbon fiber component, or a basalt fiber component.

[0097] As an optional implementation, the siphon drainage section 112 has an inclined tendency along the thickness direction of the drainage member 100. It can be understood that with such a siphon drainage section 112, the drainage efficiency of the drainage member 100 can be improved.

[0098] For example, along the first direction, the siphon drainage section 112 may have an inclined trend that is higher in the middle and lower on both sides, or the siphon drainage section 112 may have an inclined trend that is higher on one side and lower on the other side. This application embodiment does not limit this.

[0099] Optionally, along the first direction, the height of the siphon drainage section 112 near the middle of the drainage member 100 is higher than the height of the siphon drainage section 112 near the end of the drainage member 100. In this way, liquid enters the siphon drainage section 112 from the capillary suction section 111, and under the action of gravity, flows along the inclined siphon drainage section 112 to the two ends of the siphon drainage section 112 along the first direction, and is discharged from the two ends.

[0100] See Figure 1When the drain component 100 and the battery box 200 are assembled, the end of the siphon drain section 112 of the drain component 100 faces the bottom of the battery box 200 along the height direction of the battery box 200. Thus, when the liquid flows to the end of the siphon drain section 112 and overflows, the liquid creates a siphon effect within the siphon drain section 112 due to the drop, further generating negative pressure inside the assembly gap, increasing the liquid absorption efficiency and drain efficiency of the drain component 100.

[0101] In some embodiments, the outer wall of the battery box 200 is provided with a first liquid collecting element. The first liquid collecting element is located on the side where the end of the siphon drainage section 112 of the drain section 100 is located, and is used to collect the liquid discharged from the end of the siphon drainage section 112. In this way, the liquid is collected by the first liquid collecting element and finally discharged through the vehicle's pipeline, avoiding the impact of the liquid on the battery pack and / or other components of the vehicle, and further improving the reliability and safety of the battery pack and the vehicle.

[0102] In some embodiments, the vehicle further includes a second liquid collector, which corresponds to the side where the end of the siphon drain section 112 in the battery pack is located, and is used to collect the liquid discharged from the end of the siphon drain section 112. Thus, by collecting the liquid through the second liquid collector, the liquid is ultimately discharged through the vehicle's piping, avoiding the liquid's impact on the battery pack and / or other components of the vehicle, further improving the reliability and safety of the battery pack and the vehicle.

[0103] It should be noted that the terms "one embodiment," "embodiment," "exemplary embodiment," "some embodiments," etc., mentioned in the specification indicate that the described embodiment may include a specific feature, structure, or characteristic, but not every embodiment necessarily includes that specific feature, structure, or characteristic. Furthermore, such phrases do not necessarily refer to the same embodiment. Moreover, when a specific feature, structure, or characteristic is described in connection with an embodiment, implementing such a feature, structure, or characteristic in conjunction with other embodiments, whether explicitly described or not, is within the knowledge scope of those skilled in the art.

[0104] Generally speaking, terms should be understood at least in part by their use in context. For example, at least in part by context, the term "one or more" as used in the text can be used to describe any feature, structure, or characteristic of the singular meaning, or a combination of features, structures, or characteristics of the plural meaning. Similarly, at least in part by context, terms such as "a" or "the" can also be understood to convey either singular or plural usage.

[0105] It should be readily understood that the terms “on,” “above,” and “on top of” in this application should be interpreted in the broadest possible sense, such that “on” means not only “directly on something” but also “on something” with an intermediate feature or layer therebetween, and that “above” or “on top of” means not only “on something” but also “on something” without an intermediate feature or layer therebetween (i.e., directly on something).

[0106] Furthermore, for ease of explanation, spatially relative terms such as "below," "below," "under," "above," and "above" may be used to describe the relationship of one element or feature relative to other elements or features as shown in the figures. Spatially relative terms are intended to encompass different orientations of the device in use or operation other than those shown in the figures. The device may have other orientations (rotated 90° or in other orientations), and the spatially relative descriptive terms used herein may be interpreted accordingly.

[0107] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A liquid discharge member characterized by comprising: Applied to a battery box (200), the battery box (200) is used to connect with structural components and form an assembly gap; The drain component (100) is disposed on the outer wall of the battery box (200) and located in the assembly gap; The draining component (100) has a capillary structure (110) configured to draw out liquid in the assembly gap.

2. The liquid discharge member according to claim 1, wherein The capillary structure (110) includes a capillary liquid absorption section (111) and a siphon liquid discharge section (112); the capillary liquid absorption section (111) has a liquid suction port, and the capillary liquid absorption section (111) is configured to absorb fluid in the assembly gap through the liquid suction port; The siphon drainage section (112) and the capillary suction section (111) are connected to form a fluid channel, and the fluid in the fluid channel is discharged through the end of the siphon drainage section (112).

3. The liquid discharge member according to claim 2, wherein On the plane containing the first plane, the orthographic projection of the capillary liquid absorption section (111) is located within the orthographic projection of the siphon liquid discharge section (112); The first plane is perpendicular to the thickness direction of the draining component (100).

4. The liquid discharge member according to claim 2, wherein The fluid channel extends along a first direction, which intersects the thickness direction of the draining component (100).

5. The liquid discharge member according to claim 4, wherein The capillary structure (110) includes one siphon drainage section (112) and at least two capillary suction sections (111), with the at least two capillary suction sections (111) spaced apart on the periphery of the siphon drainage section (112).

6. The liquid discharge member according to claim 5, wherein The size of the capillary liquid absorption section (111) near the siphon liquid discharge section (112) is larger than the size of the capillary liquid absorption section (111) away from the siphon liquid discharge section (112).

7. The liquid discharge member according to any one of claims 1 to 6, wherein The number of capillary structures (110) is multiple, and the multiple capillary structures (110) are arranged at intervals along the second direction on the draining component (100); The second direction, the first direction, and the thickness direction of the draining component (100) are perpendicular to each other.

8. The liquid discharge member according to any one of claims 1 to 6, wherein The number of capillary structures (110) is multiple, and the multiple capillary structures (110) form two capillary groups; each capillary group includes at least two capillary structures (110) spaced apart along the second direction; The two capillary groups are spaced apart along the thickness direction of the draining component (100).

9. The liquid discharge member according to claim 2, wherein The draining component (100) has an adsorption surface perpendicular to the thickness direction of the draining component (100); the capillary suction part (111) has an opening located on the adsorption surface; The area of ​​the opening is S1, and the area of ​​the adsorption surface is S2. S1 and S2 satisfy: S1 = (1%~80%) × S2.

10. The liquid discharge member according to any one of claims 1 to 6, wherein The drain component (100) includes polyvinyl chloride components, high-density polyethylene components, glass fiber components, carbon fiber components, and basalt fiber components.

11. The liquid discharge member according to any one of claims 2 to 6, wherein The siphon drainage section (112) has an inclined tendency along the thickness direction of the drainage component (100).

12. The liquid discharge member according to claim 11, wherein Along the first direction, the height of the siphon drainage section (112) near the middle of the drainage member (100) is higher than the height of the siphon drainage section (112) near the end of the drainage member (100).

13. A battery pack, characterized by For use in vehicles, the battery pack includes: A battery box (200) is used to connect to the vehicle and form an assembly gap with the structural components of the vehicle; A drain component (100) is disposed on the outer wall of the battery box (200) and located in the assembly gap; wherein the drain component (100) is the drain component (100) according to any one of claims 1-12.

14. The battery pack of claim 13, wherein, The drain component (100) is disposed on the outer side of the top wall of the battery box (200); And / or, the draining component (100) is disposed on the outer side of the bottom wall of the battery box (200).

15. The battery pack of claim 14, wherein, Along the height direction of the battery box (200), the end of the siphon drainage section (112) of the drainage component (100) faces the bottom of the battery box (200).

16. The battery pack of any one of claims 13-15, wherein, The outer wall of the battery box (200) is provided with a first liquid collecting device, which is located on the side where the end of the siphon drainage section (112) of the draining device (100) is located, and is used to collect the liquid discharged from the end of the siphon drainage section (112).

17. A vehicle characterized by comprising: include: Structural components; A battery pack, wherein the battery pack is the battery pack according to any one of claims 13-16, wherein the battery box (200) of the battery pack is connected to the structural member and forms an assembly gap.

18. The vehicle of claim 17, wherein, The vehicles include: Chassis, the chassis forming the structural component; And / or, a bottom guard plate (300), which forms the structural member.

19. The vehicle of claim 17, wherein, The vehicle also includes a second liquid collection device, which corresponds to the side where the end of the siphon drain section (112) in the battery pack is located, and is used to collect the liquid discharged from the end of the siphon drain section (112).

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