Battery packs and power-using devices

Abstract

To provide a battery pack in which the risk of water entry is reduced.SOLUTION: The present application discloses a battery pack 100 and a power use device. The battery pack includes a first module 10 including a first housing 11 with an accommodation cavity. The first housing includes a first top wall 111, a first side wall 112, a first sealing material, and a fastening tool. The first top wall includes a first substrate 1111 and a first convex part, and the first convex part is provided at the first substrate and extends along a first direction. On the first side wall, a first inclination surface is provided; the first inclination surface exists inside the first convex part; and the first inclination surface is disposed so that liquid on the first inclination surface flows outside. The first sealing material is provided between the first substrate and the first side wall and connects between the first substrate and the first side wall, and a part of the first sealing material exists closer to the accommodation cavity. The fastening tool connects between the first substrate and the first side wall. The battery pack is advantageous in reducing the risk that the liquid enters the first housing through a space between the first substrate and the first side wall.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present application relates to the field of energy storage technology, and in particular to battery packs and power-using devices. [Background technology]

[0002] With the rapid development of the new energy industry, battery packs are gradually being applied to various industries, and the working environment is becoming more and more complex. When battery packs are exposed to the outside environment or a watery environment, they are susceptible to rain and splashes of water, which may cause water ingress and affect their lifespan. Summary of the Invention

[0003] In view of the above circumstances, it is necessary to provide a battery pack that reduces the risk of water intrusion.

[0004] An embodiment of the present application provides a battery pack including a first module including a first housing having a storage cavity. The first housing includes a first top wall, a first side wall, a first sealing material, and a fastener. The first top wall includes a first substrate and a first protrusion, the first protrusion being provided on the first substrate and extending along a first direction. The first substrate and the first side wall are aligned along the first direction, and the first side wall has a first inclined surface located inside the first protrusion. The first inclined surface is arranged to allow liquid on the first inclined surface to flow outward, the inner side being the side of the first side wall facing the storage cavity and the outer side being the side of the first side wall facing away from the storage cavity, with the direction from the inner side to the outer side being perpendicular to the first direction. A first sealing material is provided between the first substrate and the first side wall, connecting the first substrate and the first side wall, and a portion of the first sealing material is located on the side of the first inclined surface closest to the storage cavity. A fastener connects the first substrate and the first sidewall.

[0005] In the above-described battery pack, the first protrusion extending in a first direction on the first top wall is advantageous for preventing external liquid from entering the gap between the first top wall and the first side wall. The first inclined surface on the first side wall is advantageous for guiding liquid between the first substrate and the first side wall and causing it to flow outward, thereby reducing the risk of liquid entering the first housing through the gap between the first top wall and the first side wall. The first sealant provided between the first substrate and the first side wall is advantageous for further reducing the risk of liquid entering the first housing through the gap between the first substrate and the first side wall. Connecting the first substrate and the first side wall with a fastener improves the stability of the connection between the first substrate and the first side wall, which not only improves the seismic resistance of the battery pack but also ensures the sealing effect of the first sealant and is advantageous for reducing the risk of liquid entering the first housing through the gap between the first substrate and the first side wall.

[0006] In some embodiments of the present application, the first side wall is provided with a second protrusion, which extends in a direction opposite to the first direction and connects to the first sealing material, and a portion of the second protrusion is located inside the first inclined surface. The first and second protrusions are spaced apart, and the first inclined surface is located between the portion of the first protrusion and the portion of the second protrusion. Providing the second protrusion on the first side wall is advantageous not only for improving the sealing effect of the first sealing material but also for acting as a barrier against liquid on the first inclined surface, thereby further reducing the risk of liquid entering the first housing through a gap between the first substrate and the first side wall.

[0007] In some embodiments of the present application, when viewed along a first direction, a first protrusion is provided around the accommodating cavity, a second protrusion is provided around the accommodating cavity, and a first sealant is provided around the accommodating cavity, which is advantageous for protecting the first housing in all directions and reduces the risk of external liquid entering the first housing through a gap between the first substrate and the first side wall.

[0008] In some embodiments of the present application, the projection of the first convex portion circumnavigates the projection of the second convex portion along the first direction, which is advantageous to improve the waterproof effect of the second convex portion and reduce the risk of external liquid entering the first housing through the gap between the first substrate and the first side wall.

[0009] In some embodiments of the present application, at least a portion of the first convex portion extends beyond the first inclined surface along the first direction, which is advantageous for improving the water-blocking effect of the first convex portion and reducing the risk of external liquid entering the gap between the first substrate and the first side wall.

[0010] In some embodiments of the present application, the second convex portion exceeds the first inclined surface in a direction opposite to the first direction, which is advantageous in improving the water-blocking effect of the second convex portion and reducing the risk of external liquid entering the first housing through the gap between the first substrate and the first side wall.

[0011] In some embodiments of the present application, the first substrate is provided with a first through-hole, and the fastener portion is located in the first through-hole, which is advantageous for improving the stability of the fastener connecting the first substrate and the first side wall, improving the seismic performance of the battery pack, ensuring the sealing effect of the first sealing material, and reducing the risk of liquid entering the first housing through the gap between the first substrate and the first side wall.

[0012] In one embodiment, the projection of the first inclined surface circles the projection of the first through hole along the first direction, and liquid entering through the first through hole flows down the first inclined surface by gravity and flows out through the first inclined surface, which is advantageous in reducing the risk of liquid entering the first housing through the first through hole.

[0013] In some embodiments of the present application, the first side wall further includes a third protrusion, the third protrusion being provided on the first inclined surface and extending in a direction opposite to the first direction, with at least a portion of the third protrusion extending beyond the first inclined surface in the direction opposite to the first direction, a projection of the third protrusion surrounding a projection of the first through-hole in the first direction, and a fastener connecting the third protrusion. By providing the third protrusion, the fastener connects the third protrusion, which is advantageous in reducing the risk of liquid collecting on the first inclined surface due to drilling a hole in the first inclined surface and connecting the fastener, and reducing the risk of liquid entering the first housing through a gap between the first substrate and the first side wall.

[0014] In some embodiments of the present application, the first side wall further includes a first recess, the first recess being recessed along the first direction, and at least a portion of the first protrusion being located within the first recess. By providing the first recess to accommodate the first protrusion, the effect of the first protrusion on the outer size of the first housing is reduced, and the effect of the volume of the first housing on the battery pack is reduced, which is advantageous for improving the space utilization rate of the battery pack.

[0015] In some embodiments of the present application, the first top wall has a first outer surface, the first outer surface is located on a side of the first top wall along a direction opposite to the first direction, and the first outer surface protrudes along the direction opposite to the first direction. The first outer surface serves as a flow guide to guide liquid located on the first outer surface to flow to an edge, reducing the risk of liquid collecting on the first outer surface, further reducing the impact of the liquid on the first housing, and reducing the risk of the liquid entering the first housing.

[0016] In some embodiments of the present application, the battery pack further includes a heat insulator, the first substrate and the heat insulator are arranged along a first direction, and the heat insulator is connected to the first substrate. The heat insulator can function as a heat insulating and temperature buffering layer, which is advantageous in reducing the occurrence of condensation on the inside of the first substrate.

[0017] In some embodiments of the present application, the heat insulator is foamed cotton, which not only provides an anti-condensation effect, but also further reduces the impact on the weight of the battery pack, provides additional cushioning, and reduces the risk of contact loss between the first substrate and components within the accommodating cavity.

[0018] In some embodiments of the present application, the first side wall further includes a second through-hole, the first housing further includes a flow guide plate, the flow guide plate is provided with a second inclined surface, and the second through-hole and the second inclined surface are arranged along the first direction. The second inclined surface is provided with a first notch, and the second inclined surface is arranged to receive liquid flowing down from the second through-hole and guide the liquid to flow toward the first notch, and the first notch is arranged to allow the liquid on the second inclined surface to flow out, which is advantageous in reducing the risk of the liquid flowing down from the second through-hole collecting on the flow guide plate.

[0019] In some embodiments of the present application, the first housing further includes a first bottom wall, the first top wall and the first bottom wall being aligned along a first direction, and the first bottom wall connecting the first side wall. The first bottom wall is provided with a first groove and a third through-hole, the first groove being formed on an inner surface of the first bottom wall and recessed along the first direction, the third through-hole penetrating the first bottom wall, and the inner surface of the first bottom wall being located on a side of the first bottom wall opposite the first direction. The first bottom wall is arranged to guide liquid to flow into the first groove, the first groove is arranged to guide liquid to flow into the third through-hole, and the third through-hole is arranged to drain the liquid in the first groove. The first bottom wall, the first groove, and the third through-hole are advantageous in draining liquid from the first housing, reducing accumulation of liquid in the first housing and reducing the impact of liquid in the first housing on other components.

[0020] In some embodiments of the present application, the battery pack further includes a second module, wherein the first module and the second module are arranged along a first direction, and the second module includes a second housing, wherein the second housing includes a second top wall, the second top wall including a second substrate, and the first bottom wall and the second substrate are arranged along the first direction. The second substrate is provided with a second groove, wherein the second groove is provided on a side of the second substrate that is aligned in a direction opposite to the first direction and is recessed along the first direction. The second groove is positioned to receive liquid flowing out from the third through-hole and guide the liquid to be discharged from the second top wall, thereby reducing the impact of the liquid flowing out from the third through-hole on the second housing and advantageously reducing the risk of the liquid flowing out from the third through-hole entering the second housing.

[0021] In some embodiments of the present application, the first bottom wall is further provided with a drainage portion, the drainage portion is provided on a side of the first bottom wall along the first direction, the drainage portion communicates with the third through-hole and extends along the first direction. The drainage portion can serve as a guide, guiding the flow of liquid flowing out of the third through-hole to an area where the second groove can easily collect the liquid, which is advantageous for the second groove to collect and discharge the liquid flowing out of the third through-hole.

[0022] In some embodiments of the present application, along the first direction, the projection of the drainage portion is located within the projection of the second groove, which is advantageous for the liquid flowing out of the third through hole to pass through the drainage portion and flow into the second groove by gravity, and for the second groove to collect and discharge the liquid flowing out of the third through hole, thereby reducing the impact of the liquid flowing out of the third through hole on the second housing and reducing the risk of the liquid flowing out of the third through hole entering the second housing.

[0023] In some embodiments of the present application, a portion of the first side wall extends beyond the first bottom wall along the first direction to connect the second substrate, and the first side wall extends beyond the portion of the first bottom wall along the first direction, thereby acting as a water barrier and reducing the risk of external liquid entering the gap between the first bottom wall and the second substrate, further reducing the impact of the external liquid on the second housing, and reducing the risk of the external liquid entering the second housing.

[0024] In some embodiments of the present application, the second top wall is provided with a fourth protrusion, the fourth protrusion being provided on a side of the second substrate along the opposite direction to the first direction and extending along the opposite direction to the first direction, the fourth protrusion being located inside the first side wall, and a projection of the fourth protrusion overlapping a projection of the first side wall along the direction from the inside to the outside. The fourth protrusion can further act as a water barrier, further reducing the risk of external liquid entering the gap between the first bottom wall and the second substrate, further reducing the impact of external liquid on the second housing, and reducing the risk of external liquid entering the second housing.

[0025] In some embodiments of the present application, the fourth convex portion is provided with a second notch, which communicates with the second groove and is positioned to allow liquid in the second groove to drain, which is advantageous for reducing accumulation of liquid on the second top wall, reducing the impact of liquid on the second top wall on the second housing, and reducing the risk of liquid on the second top wall entering the second housing.

[0026] In some embodiments of the present application, the second housing further includes a second bottom wall, a second side wall, and a second sealing material, the second top wall and the second bottom wall being arranged along the first direction, the second side wall connecting the second top wall and the second bottom wall, and a portion of the second sealing material being located between the second bottom wall and the second side wall and connecting the second bottom wall and the second side wall. The second sealing material can perform a sealing function, which is advantageous in reducing the risk of liquid entering the second housing through a gap between the second bottom wall and the second side wall.

[0027] In some embodiments of the present application, the second bottom wall is provided with a fifth convex portion, which extends in a direction opposite to the first direction and is provided inside the second sealing material. The fifth convex portion can act as a water-blocking agent, and after external liquid has entered the gap between the second bottom wall and the second side wall through the second sealing material, the fifth convex portion can act as a barrier against the liquid, further reducing the risk of the external liquid entering the second housing through the gap between the second bottom wall and the second side wall.

[0028] In some embodiments of the present application, the second bottom wall further includes a second recess, which is recessed in the first direction and located inside the fifth protrusion. After the external liquid enters the second housing through the fifth protrusion, the second recess accommodates a portion of the liquid, which is advantageous in reducing the impact of the liquid entering the second housing on other components.

[0029] In some embodiments of the present application, the second bottom wall further includes a support surface, the support surface being located inside the second recess. The second module further includes an electric core assembly, the electric core assembly being mounted on the support surface. The support surface extends over the fifth protrusion and the second recess in a direction opposite to the first direction. After external liquid enters the second housing through the fifth protrusion, the support surface supports the electric core assembly, and the electric core assembly extends over the fifth protrusion and the second recess in a direction opposite to the first direction, reducing the risk of liquid entering the second housing contacting the electric core assembly and advantageously reducing the impact of liquid entering the second housing on the electric core assembly, thereby improving the safety performance of the battery pack.

[0030] In some embodiments of the present application, when viewed along the first direction, the second sealing material is provided around the periphery, which advantageously provides all-round protection and further reduces the risk of external liquids entering the second housing through the gap between the second bottom wall and the second side wall.

[0031] In some embodiments of the present application, when viewed along the first direction, the fifth convex portion is provided around the periphery, which is advantageous in providing all-round protection and further reduces the risk of external liquids entering the second housing through the gap between the second bottom wall and the second side wall.

[0032] In some embodiments of the present application, when viewed along the first direction, the second recess is provided around the periphery, which is advantageous in increasing the capacity of the second recess and further reducing the impact of liquid that has entered the second housing on other components.

[0033] In some embodiments of the present application, along the first direction, the projection of the second sealing material surrounds the projection of the fifth convex portion, the projection of the fifth convex portion surrounds the projection of the second concave portion, and the projection of the second concave portion surrounds the projection of the support surface, forming multiple defensive lines in the second housing and reducing the impact of external liquid on components within the second housing.

[0034] In some embodiments of the present application, the second bottom wall further includes a third inclined surface and a fourth through hole, the third inclined surface being provided on a side of the second bottom wall along a direction opposite to the first direction and positioned inside the second sealing material. The third inclined surface is positioned to receive liquid in the second housing and guide the liquid to flow toward the fourth through hole, and the fourth through hole is positioned to allow liquid on the third inclined surface to flow out. The provision of the third inclined surface and the fourth through hole is advantageous in that liquid that has entered the second housing is discharged from the second bottom wall, reducing accumulation of liquid in the second housing and reducing the impact of liquid in the second housing on other components.

[0035] An embodiment of the present application further provides a power-using device including any one of the battery packs described above.

[0036] In the above-mentioned power-using device, a first convex portion extending along a first direction is provided on the first top wall, a first inclined surface is provided on the first side wall, a first sealing material is provided between the first substrate and the first side wall, and a fastener connects the first substrate and the first side wall, thereby reducing the risk of external liquid entering the first housing through the gap between the first substrate and the first side wall, reducing the impact of external liquid entering the first housing on the battery pack, and advantageously reducing the impact of external liquid entering the first housing on the power-using device. [Brief explanation of the drawings]

[0037] [Figure 1] 1 is a schematic diagram illustrating the structure of a battery pack according to an embodiment of the present application. [Figure 2] 10 is a cross-sectional view of a first module according to an embodiment of the present application, taken along a line perpendicular to a third direction. [Figure 3] 2 is a diagram of a partial structure of a first module along a first direction according to an embodiment of the present application; FIG. [Figure 4] FIG. 10 is a diagram showing a structure in which a first top wall along a direction opposite to a first direction connects a heat insulator according to an embodiment of the present application. [Figure 5] FIG. 2 is a schematic diagram of a partial structure of a first module according to an embodiment of the present application. [Figure 6] FIG. 2 is a schematic diagram of a partial structure of a first module according to an embodiment of the present application. [Figure 7] 10 is a view of a flow guide plate along a second direction according to an embodiment of the present application; FIG. [Figure 8] 3 is a view of a first bottom wall along a first direction according to one embodiment of the present application; FIG. [Figure 9] 1 is an exploded view of a battery pack according to an embodiment of the present application; [Figure 10] FIG. 2 is a structural schematic diagram of a first module according to an embodiment of the present application. [Figure 11] FIG. 2 is a structural schematic diagram of a second module according to an embodiment of the present application. [Figure 12] FIG. 2 is a view of a second module along a first direction according to one embodiment of the present application. [Figure 13] FIG. 2 is a schematic diagram of a partial structure of a second module according to an embodiment of the present application. [Figure 14] FIG. 10 is a diagram of a partial structure of a second module along a second direction according to an embodiment of the present application. [Figure 15] FIG. 10 is a view of a second bottom wall along a first direction according to one embodiment of the present application. [Figure 16] 1 is a structural schematic diagram of a power-using device according to an embodiment of the present application; DETAILED DESCRIPTION OF THE INVENTION

[0038] The following specific embodiments further describe the present application with reference to the above-mentioned drawings.

[0039] Hereinafter, the technical solutions in the embodiments of the present application will be described with reference to the drawings in the embodiments of the present application. Obviously, the described examples are only some of the embodiments of the present application, and not all of the embodiments.

[0040] It should be noted that when one component is considered to be connected to another component, it may be directly connected to that component, or a centrally located component may also exist. When one component is considered to be "mounted" to another component, it may be directly mounted on another component, or a centrally located component may also exist. In this application, unless otherwise clearly specified or limited, the term "connected" should be understood in a broad sense, and may refer to, for example, a fixed connection, a detachable connection, an integral connection, a direct connection, an indirect connection via an intermediate medium, or internal communication between two components. The specific meanings of the above terms used in this specification can be understood by those skilled in the art depending on the context.

[0041] The terminology used herein in the present specification is for the purpose of describing particular embodiments only and is not intended to be limiting of the present specification.

[0042] In the description of the embodiments of the present application, technical terms such as "first," "second," etc. are used only to distinguish different objects, and are not to be understood to indicate or imply relative importance, or to imply the number, specific order, or primary relationship of the technical features shown. In the description of the embodiments of the present application, "plurality" means two or more, unless otherwise specified.

[0043] Reference to an "embodiment" herein means that a particular feature, structure, or characteristic described with reference to an embodiment can be included in at least one embodiment of the present application. The appearances of this phrase in various places in the specification do not necessarily all refer to the same embodiment, nor do they refer to embodiments that are exclusively independent of or alternative to other embodiments. Where not inconsistent, embodiments in the present application may be combined with each other.

[0044] It should be noted that the thickness, length, width, etc. of the various components related to the present embodiment shown in the drawings, as well as the overall thickness, length, width, etc. of the stacking device, are merely illustrative explanations and are in no way limiting to the configuration of the present application.

[0045] An embodiment of the present application provides a battery pack including a first module including a first housing having a storage cavity. The first housing includes a first top wall, a first side wall, a first sealing material, and a fastener. The first top wall includes a first substrate and a first protrusion, the first protrusion being provided on the first substrate and extending along a first direction. The first substrate and the first side wall are aligned along the first direction, and the first side wall has a first inclined surface located inside the first protrusion. The first inclined surface is arranged to allow liquid on the first inclined surface to flow outward, the inner side being the side of the first side wall facing the storage cavity and the outer side being the side of the first side wall facing away from the storage cavity, with the direction from the inner side to the outer side being perpendicular to the first direction. A first sealing material is provided between the first substrate and the first side wall, connecting the first substrate and the first side wall, and a portion of the first sealing material is located on the side of the first inclined surface closest to the storage cavity. A fastener connects the first substrate and the first sidewall.

[0046] In the above-described battery pack, the first protrusion extending in a first direction on the first top wall is advantageous for preventing external liquid from entering the gap between the first top wall and the first side wall. The first inclined surface on the first side wall is advantageous for guiding liquid between the first substrate and the first side wall and causing it to flow outward, thereby reducing the risk of liquid entering the first housing through the gap between the first top wall and the first side wall. The first sealant provided between the first substrate and the first side wall is advantageous for further reducing the risk of liquid entering the first housing through the gap between the first substrate and the first side wall. Connecting the first substrate and the first side wall with a fastener improves the stability of the connection between the first substrate and the first side wall, which not only improves the earthquake resistance of the battery pack but also ensures the sealing effect of the first sealant and is advantageous for reducing the risk of liquid entering the first housing through the gap between the first substrate and the first side wall.

[0047] Hereinafter, the embodiments of the present invention will be further described with reference to the drawings.

[0048] 1 to 4 , an embodiment of the present application provides a battery pack 100 including a first module 10 including a first housing 11 having a receiving cavity 116. The first housing 11 includes a first top wall 111, a first side wall 112, a first sealing material 114, and a fastener 115.

[0049] The first top wall 111 includes a first substrate 1111 and a first protrusion 1112, and the first protrusion 1112 is provided on the first substrate 1111 and extends along the first direction X.

[0050] The first substrate 1111 and the first side wall 112 are arranged along a first direction X, and the first side wall 112 has a first inclined surface 1121, which is located inside the first convex portion 1112 and is arranged to allow liquid on the first inclined surface 1121 to flow outward, with the inside being the side of the first side wall 112 facing the accommodating cavity 116 and the outside being the side of the first side wall 112 facing away from the accommodating cavity 116, and the direction from the inside to the outside being perpendicular to the first direction X.

[0051] The first sealing material 114 is provided between the first substrate 1111 and the first side wall 112, connecting the first substrate 1111 and the first side wall 112, and a portion of the first sealing material 114 is located on the side of the first inclined surface 1121 closer to the receiving cavity 116.

[0052] Fasteners 115 connect the first substrate 1111 and the first sidewall 112 .

[0053] In the battery pack 100 described above, by providing the first top wall 111 with the first protrusion 1112 extending along the first direction X, it is advantageous to prevent external liquid from entering the gap between the first top wall 111 and the first side wall 112, and by providing the first inclined surface 1121 on the first side wall 112, it is advantageous to guide the liquid between the first substrate 1111 and the first side wall 112 to flow outward, thereby reducing the risk of the liquid entering the first housing 11 through the gap between the first substrate 1111 and the first side wall 112, and by providing the first sealing member 1121 between the first substrate 1111 and the first side wall 112, it is advantageous to prevent external liquid from entering the gap between the first top wall 111 and the first side wall 112, and The provision of the stopper 114 is advantageous in further reducing the risk of liquid entering the first housing 11 through the gap between the first substrate 1111 and the first side wall 112, and the fastener 115 connects the first substrate 1111 and the first side wall 112, thereby improving the stability of the connection between the first substrate 1111 and the first side wall 112, which not only improves the earthquake resistance of the battery pack 100 but also is advantageous in improving the sealing effect of the first sealing material 114, thereby reducing the risk of liquid entering the first housing 11 through the gap between the first substrate 1111 and the first side wall 112.

[0054] In one embodiment, the first inclined surface 1121 is inclined downwards along the first direction X, from the inside to the outside, which is advantageous for directing liquid to flow downwards and outwards for drainage.

[0055] In one embodiment, the downward inclination angle of the first inclined surface 1121 is 0.3° to 3°, which is not only advantageous for guiding the liquid downward but also advantageous for processing, thereby saving processing costs. In one embodiment, the inclination angle of the first inclined surface 1121 is formed by die-cutting using an injection molding machine.

[0056] In one embodiment, the battery pack 100 is placed on a bottom or other object along the first direction X, and the first substrate 1111 is positioned above the first side wall 112. When the battery pack 100 is in an environment where it is exposed to rain or splashes water, the first protrusion 1112 extends (downward) along the first direction X, which is advantageous in preventing liquid from entering the gap between the first substrate 1111 and the first side wall 112. After liquid enters the gap between the first substrate 1111 and the first side wall 112, the liquid flows outward under the guidance of the first inclined surface 1121, which is advantageous in reducing the risk of the liquid entering the first housing 11.

[0057] In one embodiment, the first housing 11 further includes a first bottom wall 113, where the first top wall 111 and the first bottom wall 113 are arranged along the first direction X, the first bottom wall 113 connects the first side wall 112, and the first top wall 111, the first bottom wall 113, and the first side wall 112 form an accommodating cavity 116.

[0058] In one embodiment, the first side wall 112 includes a first wall 11261, a second wall 11262, a third wall 11263, and a fourth wall 11264, where the first wall 11261 and the third wall 11263 are arranged along the second direction Y, the second wall 11262 and the fourth wall 11264 are arranged along the third direction Z, the first wall 11261 and the third wall 11263 all connect the second wall 11262 and the fourth wall 11264, and the first wall 11261, the second wall 11262, the third wall 11263, and the fourth wall 11264 all connect the first top wall 111 and the first bottom wall 113. Wherein, the second direction Y is perpendicular to the first direction X, and the third direction Z is perpendicular to both the first direction X and the second direction Y.

[0059] In one embodiment, the first sidewall 112 is peripherally disposed and, in one embodiment, when viewed along the first direction X, the first sidewall 112 has a circular or elliptical shape.

[0060] In one embodiment, first top wall 111 is formed after melting and hardening a plastic material, which is advantageous for reducing the weight of first top wall 111 and reducing the impact of the weight of first top wall 111 on battery pack 100. In one embodiment, first top wall 111 is made of a metal material, which is advantageous for improving the structural strength and rigidity of first top wall 111 and reducing the impact of deformation or damage of first top wall 111 on battery pack 100.

[0061] In one embodiment, the first bottom wall 113 is formed after the plastic material has melted and hardened, which is advantageous for reducing the weight of the first bottom wall 113 and reducing the impact of the weight of the first bottom wall 113 on the battery pack 100. In one embodiment, the first bottom wall 113 is made of a metal material, which is advantageous for improving the structural strength and rigidity of the first bottom wall 113 and reducing the impact of deformation or damage of the first bottom wall 113 on the battery pack 100.

[0062] In one embodiment, the first side wall 112 is formed after the plastic material has melted and hardened, which is advantageous for reducing the weight of the first side wall 112 and reducing the impact of the weight of the first side wall 112 on the battery pack 100. In one embodiment, the first side wall 112 is made of a metal material, which is advantageous for improving the structural strength and rigidity of the first side wall 112 and reducing the impact of deformation or damage of the first side wall 112 on the battery pack 100.

[0063] In one embodiment, the material of the first sealant 114 includes, but is not limited to, silica gel, nitrile rubber, fluororubber, triethylene propylene rubber, chloroprene rubber, butyl rubber, acrylate rubber, natural rubber, and urethane rubber.

[0064] In one embodiment, the first side wall 112 is provided with a second protrusion 1122, which extends in the opposite direction to the first direction X and connects to the first sealing material 114. A portion of the second protrusion 1122 is located inside the first inclined surface 1121. The first protrusion 1112 and the second protrusion 1122 are provided with a gap therebetween, and the first inclined surface 1121 is located between the portion of the first protrusion 1112 and the portion of the second protrusion 1122. Providing the second protrusion 1122 on the first side wall 112 is not only advantageous in improving the sealing effect of the first sealing material 114, but also in acting as a barrier against liquid on the first inclined surface 1121, thereby further reducing the risk of liquid entering the first housing 11 through a gap between the first substrate 1111 and the first side wall 112.

[0065] In one embodiment, when viewed along the opposite direction of the first direction X, the first protrusion 1112 is provided around the accommodating cavity 116, which is advantageous in improving the water-blocking effect of the first protrusion 1112 and reducing the risk of external liquid entering the gap between the first substrate 1111 and the first side wall 112.

[0066] In one embodiment, when viewed along the first direction X, the second protrusion 1122 is provided around the accommodating cavity 116 and the first sealant 114 is provided around the accommodating cavity 116, which is advantageous in improving the waterproof effect of the second protrusion 1122 and the first sealant 114 and reducing the risk of external liquid entering the first housing 11 through the gap between the first substrate 1111 and the first side wall 112.

[0067] In one embodiment, the projection of the first convex portion 1112 circles the projection of the second convex portion 1122 along the first direction X, which is advantageous in improving the waterproof effect of the second convex portion 1122 and further reducing the risk of external liquid entering the first housing 11 through the gap between the first substrate 1111 and the first side wall 112.

[0068] In one embodiment, at least a portion of the first convex portion 1112 exceeds the first inclined surface 1121 along the first direction X, which is advantageous in improving the water-blocking effect of the first convex portion 1112 and reducing the risk of external liquid entering the gap between the first substrate 1111 and the first side wall 112.

[0069] In one embodiment, the second convex portion 1122 exceeds the first inclined surface 1121 in the direction opposite to the first direction X, which is advantageous in improving the water-blocking effect of the second convex portion 1122 and reducing the risk of external liquid entering the first housing 11 through the gap between the first substrate 1111 and the first side wall 112.

[0070] In one embodiment, the first substrate 1111 is provided with a first through-hole 11111, and a portion of the fastener 115 is located in the first through-hole 11111. The portion of the fastener 115 extends through the first through-hole 11111 along the first direction X and then connects to the first side wall 112. This improves the stability of the connection between the first substrate 1111 and the first side wall 112, which is advantageous for improving the earthquake resistance of the battery pack 100, and is also advantageous for improving the sealing effect of the first sealing material 114 and reducing the risk of liquid entering the first housing 11 through the gap between the first substrate 1111 and the first side wall 112.

[0071] In one embodiment, the fastener 115 is a screw, and a screw hole is provided in the first side wall 112. The screw portion extends into the first through-hole 11111 along the first direction X, and then connects with the screw hole, which is easy to assemble and advantageous for improving the installation efficiency of the battery pack 100.

[0072] In one embodiment, the projection of the first inclined surface 1121 circles the projection of the first through hole 11111 along the first direction X, so that liquid that has entered the first through hole 11111 can flow down the first inclined surface 1121 by gravity and flow out through the first inclined surface 1121, which is advantageous in reducing the risk of liquid entering the first housing 11 through the first through hole 11111.

[0073] In one embodiment, the first side wall 112 further includes a third protrusion 1123, which is provided on the first inclined surface 1121 and extends in the opposite direction to the first direction X, and the fastener 115 connects the third protrusion 1123.

[0074] At least a portion of the third convex portion 1123 extends beyond the first inclined surface 1121 along the direction opposite to the first direction X. Providing the third convex portion 1123 is advantageous in reducing the risk of liquid collecting on the first inclined surface 1121 by drilling a hole in the first inclined surface 1121 and connecting the fastener 115, and in reducing the risk of liquid entering the first housing 11 through a gap between the first substrate 1111 and the first side wall 112.

[0075] In one embodiment, the projection of the third protrusion 1123 encircles the projection of the first through-hole 11111 along the first direction X, which is advantageous for assembling the fastener 115, improving the mounting efficiency, improving the stability of the fastener 115 connecting the first substrate 1111 and the first side wall 112, and improving the earthquake resistance of the battery pack 100.

[0076] In one embodiment, a first recess 1124 is further provided in the first side wall 112, and the first recess 1124 is recessed along the first direction X, and at least a portion of the first protrusion 1112 is located within the first recess 1124. By providing the first recess 1124 to accommodate the first protrusion 1112, the effect of the first protrusion 1112 on the outer size of the first housing 11 is reduced, and the effect of the volume of the first housing 11 on the battery pack 100 is reduced, which is advantageous in improving the space utilization rate of the battery pack 100.

[0077] In one embodiment, when viewed along the first direction X, a first recess 1124 is provided around the receiving cavity 116, and the first recess 1124 and the first protrusion 1112 fit together to advantageously accommodate the first protrusion 1112 and reduce the risk of interference between the first top wall 111 and the first side wall 112. The fit between the first recess 1124 and the first protrusion 1112 also advantageously prevents the risk of liquid entering the first housing 11 through a gap between the first top wall 111 and the first side wall 112.

[0078] In one embodiment, the first protrusion 1112 and the first recess 1124 are spaced apart along the first direction X, which is advantageous in reducing the risk of interference between the first protrusion 1112 and the first side wall 112.

[0079] In one embodiment, the first top wall 111 has a first outer surface 1113, which is located on a side of the first top wall 111 that faces in the opposite direction to the first direction X, and which protrudes in the opposite direction to the first direction X. The first outer surface 1113 can serve as a guide, guiding liquid located on the first outer surface 1113 to flow to the edge, reducing the risk of the liquid collecting on the first outer surface 1113 and further reducing the impact of the liquid on the first housing 11 and reducing the risk of the liquid entering the first housing 11.

[0080] In one embodiment, when viewed along the third direction Z, the first outer surface 1113 has an arc-shaped protrusion, with the apex of the arc being close to the middle of the first outer surface 1113, which allows the first outer surface 1113 to guide liquid to its edges, further reducing the risk of liquid collecting on the first outer surface 1113 and advantageously reducing the risk of liquid entering the first housing 11. In addition, the first outer surface 1113 has an arc-shaped protrusion, which improves the structural rigidity of the first top wall 111 and reduces the risk of the first bottom wall 113 being deformed under pressure, advantageously improving the safety performance of the first housing 11.

[0081] In one embodiment, the first module 10 further includes an insulator 12, which is located within the accommodating cavity 116, the first substrate 1111 and the insulator 12 are arranged along the first direction X, and the insulator 12 connects the first substrate 1111.

[0082] When there is a large temperature difference between the inside and outside of first housing 11 and the temperature of receiving cavity 116 is higher than the temperature outside first housing 11, condensation is very likely to occur inside first substrate 1111, and the condensation and dripping will affect the components inside receiving cavity 116. A heat insulator 12 is provided inside first substrate 1111, and the heat insulator 12 functions as a heat insulating and temperature buffer layer, which is advantageous in reducing the occurrence of condensation inside first substrate 1111.

[0083] In one embodiment, the heat insulator 12 is made of foamed cotton, which not only prevents condensation but also reduces the impact on the weight of the battery pack 100, and also provides a cushioning effect, reducing the risk of contact loss between the first substrate 1111 and the components inside the receiving cavity 116.

[0084] 5 to 7, in one embodiment, the first side wall 112 further includes a second through-hole 1125. In one embodiment, the second through-hole 1125 may be a line through-hole.

[0085] In one embodiment, the first housing 11 further includes a flow guide plate 117, which is disposed in the accommodating cavity 116 and connects the first side wall 112. The flow guide plate 117 has a second inclined surface 1171, which faces the first substrate 1111.

[0086] The second through-holes 1125 and the second inclined surfaces 1171 are arranged along the first direction X. When external liquid enters the receiving cavity 116 through the second through-holes 1125, the liquid entering through the second through-holes 1125 can flow to the second inclined surfaces 1171 due to gravity.

[0087] The second inclined surface 1171 is provided with a first notch 1172, and the second inclined surface 1171 is arranged to receive the liquid flowing down from the second through hole 1125 and guide the liquid to the first notch 1172, and the first notch 1172 is arranged to allow the liquid on the second inclined surface 1171 to flow out, which is advantageous in reducing the risk of the liquid flowing down from the second through hole 1125 collecting on the flow guide plate 117.

[0088] In one embodiment, the first notch 1172 and the first bottom wall 113 face each other along the first direction X, which is advantageous in that the liquid flowing out of the first notch 1172 drips onto the first bottom wall 113 by gravity, thereby reducing the impact of the liquid on the components in the receiving cavity 116.

[0089] In one embodiment, the second inclined surface 1171 is inclined downward along the first direction X, and the lowest point of the second inclined surface 1171 is connected to the first notch 1172, which is advantageous in that the second inclined surface 1171 guides the liquid to flow into the first notch 1172 and reduces the accumulation of liquid on the second inclined surface 1171.

[0090] In one embodiment, the flow guide plate 117 is formed after the plastic material has melted and hardened, which is advantageous in reducing the weight of the flow guide plate 117 and reducing the impact of the weight of the flow guide plate 117 on the battery pack 100.

[0091] In one embodiment, the flow guide plate 117 is made of a metal material, which is advantageous to improve the structural strength and rigidity of the flow guide plate 117 and reduce the risk of deformation of the flow guide plate 117. Optionally, the flow guide plate 117 is manufactured by a sheet metal process, which is advantageous to reduce the processing and manufacturing costs.

[0092] In one embodiment, the angle of the second inclined surface 1171 downward in the first direction X is 0.3° to 3°, which is not only advantageous for guiding the liquid downward but also advantageous for processing and reduces processing costs. In one embodiment, the inclination angle of the second inclined surface 1171 is formed by a die cut using an injection molding machine.

[0093] In one embodiment, the first module 10 further includes a conduit 13 and a harness (not shown), where the conduit 13 is provided in the fourth wall 11264 and a portion thereof is located in the second through-hole 1125, a portion of the harness is located in the first housing 11, and a portion of the harness is located in the conduit 13, and the harness allows the first module 10 to be electrically connected to an external device. The conduit 13 provides protection for the harness and reduces the risk of damage to the harness.

[0094] In one embodiment, the first module 10 further includes a third sealing material (not shown), at least a portion of which is located in the gap between the conduit 13 and the second through-hole 1125, to perform a sealing role and reduce the risk of external impurities or liquids entering the accommodating cavity 116 through the gap between the conduit 13 and the second through-hole 1125.

[0095] As shown in FIG. 8 , in one embodiment, the first bottom wall 113 is provided with a first groove 1131 and a third through hole 1132. The first groove 1131 is provided on the inner surface of the first bottom wall 113 and is recessed along the first direction X. The third through hole 1132 penetrates the first bottom wall 113, and the inner surface of the first bottom wall 113 is located on the side of the first bottom wall 113 that is opposite to the first direction X.

[0096] The first bottom wall 113 is arranged to allow liquid on the first bottom wall 113 to flow into the first groove 1131, the first groove 1131 is arranged to guide the liquid to flow into the third through-hole 1132, and the third through-hole 1132 is arranged to drain the liquid in the first groove 1131. The provision of the first bottom wall 113, the first groove 1131, and the third through-hole 1132 is advantageous in draining the liquid in the first housing 11, reducing the accumulation of liquid in the first housing 11, and reducing the impact of the liquid in the first housing 11 on other components.

[0097] In one embodiment, the first bottom wall 113 has a fourth inclined surface 1133, which is located on a side of the first bottom wall 113 facing the receiving cavity 116, and is arranged to guide the liquid to flow into the first groove 1131. In one embodiment, the fourth inclined surface 1133 is inclined downward along the first direction X, and the lowest point of the fourth inclined surface 1133 is connected to the first groove 1131, which is advantageous for guiding the liquid to flow into the first groove 1131 and reducing the accumulation of liquid on the fourth inclined surface 1133.

[0098] In one embodiment, the angle of the fourth inclined surface 1133 downward in the first direction X is 0.3° to 3°, which is not only advantageous for guiding the liquid downward but also advantageous for processing, thereby reducing processing costs. In one embodiment, the inclination angle of the fourth inclined surface 1133 is formed by a die cut by an injection molding machine.

[0099] In one embodiment, when viewed along the first direction X, the third through-hole 1132 is located within the first groove 1131, which is advantageous in allowing liquid within the first groove 1131 to drain through the third through-hole 1132 and reducing the accumulation of liquid within the first groove 1131.

[0100] In one embodiment, the first groove 1131 is sloped downward along the first direction X, and the lowest point of the first groove 1131 is connected to the third through hole 1132, which is advantageous in that the first groove 1131 guides the liquid to flow into the third through hole 1132 and reduces the accumulation of liquid in the first groove 1131.

[0101] In one embodiment, the angle of the downward inclination of the first groove 1131 in the first direction X is 0.3° to 3°, which is not only advantageous for guiding the liquid downward but also advantageous for processing and reduces processing costs. In one embodiment, the inclination angle of the first groove 1131 is formed by a die cut using an injection molding machine.

[0102] In one embodiment, the number of first grooves 1131 is two, and the two first grooves 1131 are arranged along the second direction Y, and the number of third through holes 1132 is two, and when viewed along the first direction X, one third through hole 1132 is located within one first groove 1131.

[0103] In one embodiment, the fourth inclined surface 1133 includes a first portion 11331, a second portion 11332, and a third portion 11333, and the first portion 11331, the second portion 11332, and the third portion 11333 are arranged along the second direction Y, and one first groove 1131 is located between the first portion 11331 and the second portion 11332, and the other first groove 1131 is located between the second portion 11332 and the third portion 11333.

[0104] The first part 11331 is arranged to guide the liquid to flow to the adjacent first groove 1131, the third part 11333 is arranged to guide the liquid to flow to the adjacent first groove 1131, and the second part 11332 is arranged to guide the liquid to flow to the first grooves 1131 on both sides.

[0105] By providing multiple first grooves 1131 and dividing the fourth inclined surface 1133 into multiple parts, it is advantageous to quickly drain liquid on the first bottom wall 113, reduce accumulation of liquid on the first bottom wall 113, and reduce the impact of liquid on the first bottom wall 113 on components in the storage cavity 116.

[0106] As shown in FIGS. 1, 9 to 12, in one embodiment, the battery pack 100 further includes a second module 20, and the first module 10 and the second module 20 are arranged along a first direction X.

[0107] The second module 20 includes a second housing 21, which includes a second top wall 211, which includes a second substrate 2111, and the first bottom wall 113 and the second substrate 2111 are arranged along the first direction X.

[0108] The second substrate 2111 is provided with a second groove 2112, which is provided on one side of the second substrate 2111 along the direction opposite to the first direction X and is recessed along the first direction X.

[0109] The second groove 2112 is positioned to receive the liquid flowing out from the third through hole 1132 and guide the liquid to be discharged from the second top wall 211, which is advantageous in reducing the impact of the liquid flowing out from the third through hole 1132 on the second housing 21 and reducing the risk of the liquid flowing out from the third through hole 1132 entering the second housing 21.

[0110] In one embodiment, the first bottom wall 113 is further provided with a drainage portion 1134, which is provided on one side of the first bottom wall 113 along the first direction X and communicates with the third through-hole 1132 and extends along the first direction X. The drainage portion 1134 can act as a guide, guiding and directing the liquid flowing out of the third through-hole 1132 to an area where the second groove 2112 can easily collect the liquid, which is advantageous for the second groove 2112 to collect and discharge the liquid flowing out of the third through-hole 1132.

[0111] In one embodiment, along the first direction X, the projection of the water outlet of the drainage portion 1134 is located within the projection of the second groove 2112, and the liquid flowing out from the third through hole 1132 is flowed by gravity into the second groove 2112 by the drainage portion 1134, and the second groove 2112 collects the liquid flowing out from the third through hole 1132 and discharges it, which is advantageous in reducing the impact of the liquid flowing out from the third through hole 1132 on the second housing 21 and reducing the risk of the liquid flowing out from the third through hole 1132 entering the second housing 21.

[0112] In one embodiment, the drainage portion 1134 extends along the first direction X, and the liquid is drained directly into the second groove 2112 by the drainage portion 1134, which is advantageous in reducing the time it takes for the liquid to pass through the drainage portion 1134 and improving the water discharge efficiency.

[0113] In one embodiment, the number of drainage portions 1134 is matched with the number of third through-holes 1132 , and each drainage portion 1134 connects one third through-hole 1132 .

[0114] In one embodiment, the number and position of the second grooves 2112 correspond one-to-one to the number and position of the drainage sections 1134, so that liquid flowing out from different drainage sections 1134 falls into different second grooves 2112, which is advantageous in improving the outflow efficiency of the second grooves 2112, reducing the accumulation of liquid on the second top wall 211, and reducing the impact of liquid on the second top wall 211 on the second module 20.

[0115] In one embodiment, the angle of the second groove 2112 downward in the first direction X is 0.3° to 3°, which is not only advantageous for guiding the liquid downward but also advantageous for processing and reduces processing costs. In one embodiment, the angle of the second groove 2112 is formed by die cutting using an injection molding machine.

[0116] In one embodiment, the second housing 21 further includes a second bottom wall 213 and a second side wall 212, the second top wall 211 and the second bottom wall 213 are arranged along the first direction X, and the second side wall 212 connects the second top wall 211 and the second bottom wall 213.

[0117] In one embodiment, the second side wall 212 includes a fifth wall 2121, a sixth wall 2122, a seventh wall 2123, and an eighth wall 2124, where the fifth wall 2121 and the seventh wall 2123 are arranged along the second direction Y, the sixth wall 2122 and the eighth wall 2124 are arranged along the third direction Z, the fifth wall 2121 and the seventh wall 2123 both connect the sixth wall 2122 and the eighth wall 2124, and the fifth wall 2121, the sixth wall 2122, the seventh wall 2123, and the eighth wall 2124 all connect the second top wall 211 and the second bottom wall 213.

[0118] In one embodiment, the second side wall 212 is provided around the periphery and, in one embodiment, when viewed along the first direction X, the second side wall 212 has a circular or elliptical shape.

[0119] In one embodiment, second top wall 211 is formed after the plastic material has melted and hardened, which is advantageous for reducing the weight of second top wall 211 and reducing the impact of the weight of second top wall 211 on battery pack 100. In one embodiment, second top wall 211 is made of a metal material, which is advantageous for improving the structural strength and rigidity of second top wall 211 and reducing the impact of deformation or damage to second top wall 211 on battery pack 100.

[0120] In one embodiment, the second bottom wall 213 is formed after the plastic material has melted and hardened, which is advantageous for reducing the weight of the second bottom wall 213 and reducing the impact of the weight of the second bottom wall 213 on the battery pack 100. In one embodiment, the second bottom wall 213 is made of a metal material, which is advantageous for improving the structural strength and rigidity of the second bottom wall 213 and reducing the impact of deformation or damage of the second bottom wall 213 on the battery pack 100.

[0121] In one embodiment, the second side wall 212 is formed after the plastic material has melted and hardened, which is advantageous for reducing the weight of the second side wall 212 and reducing the impact of the weight of the second side wall 212 on the battery pack 100. In one embodiment, the second side wall 212 is made of a metal material, which is advantageous for improving the structural strength and rigidity of the second side wall 212 and reducing the impact of deformation or damage of the second side wall 212 on the battery pack 100.

[0122] In one embodiment, a portion of the first side wall 112 extends beyond the first bottom wall 113 along the first direction X to connect the second substrate 2111, and the portion of the first side wall 112 that extends beyond the first bottom wall 113 along the first direction X can act as a water barrier, reducing the risk of external liquid entering the gap between the first bottom wall 113 and the second substrate 2111, further reducing the impact of external liquid on the second housing 21, and reducing the risk of external liquid entering the second housing 21.

[0123] In one embodiment, the second top wall 211 is provided with a fourth protrusion 2113, which is provided on a side of the second substrate 2111 that is opposite to the first direction X and extends in the opposite direction to the first direction X. The fourth protrusion 2113 is located inside the first side wall 112, and a projection of the fourth protrusion 2113 overlaps a projection of the first side wall 112 in the direction from the inside to the outside. The fourth protrusion 2113 can further act as a water barrier, further reducing the risk of external liquid entering the gap between the first bottom wall 113 and the second substrate 2111, further reducing the impact of external liquid on the second housing 21, and reducing the risk of external liquid entering the second housing 21.

[0124] In one embodiment, the fourth protrusion 2113 is provided with a second notch 2114, which communicates with the second groove 2112 and is positioned to drain liquid from the second groove 2112, which is advantageous in reducing the accumulation of liquid on the second top wall 211, reducing the impact of the liquid on the second top wall 211 on the second housing 21, and reducing the risk of the liquid on the second top wall 211 entering the second housing 21.

[0125] In one embodiment, the number of second notches 2114 is equal to the number of second grooves 2112 , and each second notch 2114 connects one second groove 2112 .

[0126] 13 to 15 , in one embodiment, the second housing 21 further includes a second sealant 214, which is located between the second bottom wall 213 and the second side wall 212 and connects the second bottom wall 213 and the second side wall 212. The second sealant 214 can perform a sealing role, which is advantageous in reducing the risk of liquid entering the second housing 21 through a gap between the second bottom wall 213 and the second side wall 212.

[0127] In one embodiment, when viewed along the first direction X, the second sealing material 214 is provided all around, which is advantageous for providing all-round protection and further reduces the risk of external liquids entering the second housing 21 through the gap between the second bottom wall 213 and the second side wall 212.

[0128] In one embodiment, the material of the second sealing material 214 includes, but is not limited to, silica gel, nitrile rubber, fluororubber, triethylpropylene rubber, chloroprene rubber, butyl rubber, triethylpropylene acrylate rubber, natural triethylpropylene rubber, and urethane rubber.

[0129] In one embodiment, the second bottom wall 213 is provided with a fifth protrusion 2131, which extends in the opposite direction to the first direction X and is provided inside the second sealing material 214. The fifth protrusion 2131 can act as a water barrier, and after the second sealing material 214 fails or external liquid enters the gap between the second bottom wall 213 and the second side wall 212 through the second sealing material 214, the fifth protrusion 2131 acts as a barrier against the liquid, further reducing the risk of the external liquid entering the second housing 21 through the gap between the second bottom wall 213 and the second side wall 212.

[0130] In one embodiment, the fifth convex portion 2131 extends beyond the second sealing material 214 in the direction opposite to the first direction X, and the fifth convex portion 2131 acts as a water barrier, which is advantageous in reducing the risk of external liquid entering the second housing 21 through the gap between the second bottom wall 213 and the second side wall 212.

[0131] In one embodiment, when viewed along the first direction X, the fifth protrusions 2131 are provided around the periphery, which is advantageous in providing all-round protection and further reduces the risk of external liquids entering the second housing 21 through the gap between the second bottom wall 213 and the second side wall 212.

[0132] In one embodiment, the second bottom wall 213 is further provided with a second recess 2132, which is recessed along the first direction X and located inside the fifth protrusion 2131. After external liquid enters the second housing 21 through the fifth protrusion 2131, the second recess 2132 accommodates some of the liquid, which is advantageous in reducing the impact of the liquid that has entered the second housing 21 on other components.

[0133] In one embodiment, the second bottom wall 213 further includes a support surface 2133, which is located inside the second recess 2132. The second module 20 further includes an electric core assembly 22, which is mounted on the support surface 2133. The support surface 2133 extends beyond the fifth protrusion 2131 and the second recess 2132 in the direction opposite to the first direction X. After external liquid enters the second housing 21 through the fifth protrusion 2131, the support surface 2133 holds the electric core assembly 22, which moves beyond the fifth protrusion 2131 and the second recess 2132 in the direction opposite to the first direction X. This reduces the risk of liquid entering the second housing 21 coming into contact with the electric core assembly 22 and reduces the impact of liquid entering the second housing 21 on the electric core assembly 22, which is advantageous to improving the safety performance of the battery pack 100.

[0134] In one embodiment, when viewed along the first direction X, the second recess 2132 is provided around the support surface 2133, which is advantageous in increasing the capacity of the second recess 2132 and further reducing the effect of liquid that has entered the second housing 21 on the electric core assembly 22 on the support surface 2133.

[0135] In one embodiment, along the first direction X, the projection of the second sealing material 214 surrounds the projection of the fifth convex portion 2131, the projection of the fifth convex portion 2131 surrounds the projection of the second concave portion 2132, and the projection of the second concave portion 2132 surrounds the projection of the support surface 2133, thereby forming multiple defensive lines in the second housing 21 and reducing the impact of external liquids on the electrical core assembly 22.

[0136] In one embodiment, the second bottom wall 213 is further provided with a third inclined surface 2134 and a fourth through hole 2135. The third inclined surface 2134 is provided on a side of the second bottom wall 213 that is opposite to the first direction X and is located inside the second recess 2132. The third inclined surface 2134 is disposed to receive liquid in the second housing 21 and direct the liquid on the third inclined surface 2134 to the fourth through hole 2135, and the fourth through hole 2135 is disposed to allow the liquid on the third inclined surface 2134 to flow out. The fourth through hole 2135 is in communication with the outside, and the provision of the third inclined surface 2134 and the fourth through hole 2135 allows liquid in the second housing 21 to be discharged from the second bottom wall 213, reducing the accumulation of liquid in the second housing 21 and advantageously reducing the impact of liquid in the second housing 21 on other components.

[0137] In one embodiment, the third inclined surface 2134 is inclined downward along the first direction X, and the lowest point of the third inclined surface 2134 is connected to the fourth through hole 2135, which is advantageous for the third inclined surface 2134 to guide the liquid to flow into the fourth through hole 2135.

[0138] In one embodiment, the angle of the third inclined surface 2134 that slopes downward along the first direction X is 0.3° to 3°, which is not only advantageous for guiding the liquid downward but also advantageous for processing and reduces processing costs. In one embodiment, the inclination angle of the third inclined surface 2134 is formed by a die cut using an injection molding machine.

[0139] In one embodiment, the number of fourth through holes 2135 is multiple, which is advantageous in improving the efficiency of drainage of liquid on the second bottom wall 213 and reducing the impact of liquid accumulation on the second bottom wall 213 on the second module 20.

[0140] In one embodiment, the second module 20 further includes a circuit board 23, the circuit board 23 is provided within the second housing 21, the electrical core assembly 22 includes a plurality of electrical cores 221, and the plurality of electrical cores 221 are electrically connected to the circuit board 23.

[0141] In one embodiment, the electrical core 221 includes one or more of a soft shell electrical core, a square shell electrical core, or a cylindrical electrical core.

[0142] In one embodiment, the circuit board 23 includes a BMS (Battery Management System, abbreviated as BMS) assembly, which includes a plurality of electronic components that can perform functions such as data collection, control, protection, communication, power calculation, signal transmission, and electrical energy transmission for the electric core 221. Here, the data collected by the electronic components includes one or more of voltage, current, resistance, and temperature.

[0143] As shown in Figures 9 to 11, in one embodiment, the first module 10 further includes a control unit (not shown), which is located in the first housing 11, and is electrically connected to the second module 20, and the control unit controls the charging and discharging of the electric core assembly 22.

[0144] In one embodiment, the first module 10 further includes a first connector 15, the first connector 15 being provided on the first bottom wall 113, the first connector 15 being connected to the control unit, and a portion of the first connector 15 being exposed on the first bottom wall 113.

[0145] The second module 20 further includes a second connector 24, which is provided on the second top wall 211 and connects to the circuit board 23, with a portion of the second connector 24 exposed at the second top wall 211. The first connector 15 and the second connector 24 are connected to each other so that the control unit electrically connects the circuit board 23 and the electric core assembly 22.

[0146] In one embodiment, a portion of the second connector 24 extends beyond the second top wall 211 in the direction opposite to the first direction X, which is advantageous in reducing the impact of liquid on the second top wall 211 on the second connector 24 and extending the service life of the second connector 24.

[0147] In one embodiment, the first connector 15 is recessed in the second bottom wall 213 in the direction opposite to the first direction X, which is advantageous in reducing the impact of liquid between the second top wall 211 and the first bottom wall 113 on the first connector 15 and extending the service life of the first connector 15.

[0148] As shown in FIG. 16, an embodiment of the present application further provides a power-using device 200 including any one of the battery packs 100 described above.

[0149] In the above-mentioned power consumption device 200, the first top wall 111 is provided with a first convex portion 1112 extending along the first direction X, the first side wall 112 is provided with a first inclined surface 1121, a first sealing material 114 is provided between the first substrate 1111 and the first side wall 112, and a fastener 115 connects the first substrate 1111 and the first side wall 112. This is advantageous in reducing the risk of external liquid entering the first housing 11 through the gap between the first substrate 1111 and the first side wall 112, reducing the impact of external liquid entering the first housing 11 on the battery pack 100, and reducing the impact of external liquid entering the first housing 11 on the power consumption device 200.

[0150] In one embodiment, power-using device 200 includes, but is not limited to, a drone, an electric motorcycle, a home appliance, and a power tool.

[0151] The above are only specific embodiments of the present application, but the protection scope of the present application is not limited thereto, and any changes or replacements within the technical scope disclosed in the present application should be included in the disclosure scope of the present application. [Explanation of symbols]

[0152] Battery pack 100 Module 1 10 1st cabinet 11 1st top wall 111 First board 1111 First through hole 11111 First convex part 1112 1st outer surface 1113 First side wall 112 1st slope 1121 Second convex part 1122 Third convex part 1123 First recess 1124 Second through hole 1125 1st wall 11261 2nd wall 11262 3rd wall 11263 4th wall 11264 First bottom wall 113 1st groove 1131 Third through hole 1132 4th slope 1133 Part 1 11331 2nd part 11332 Third part 11333 Drainage section 1134 First sealing material 114 Fasteners 115 Storage cavity 116 Current guide plate 117 2nd slope 1171 First notch 1172 Insulation 12 conduit 13 Third sealing material 14 1st Connector 15 Module 2 20 Second cabinet 21 2nd top wall 211 Second board 2111 2nd groove 2112 4th convex part 2113 Second notch 2114 Second side wall 212 5th wall 2121 6th wall 2122 7th wall 2123 8th wall 2124 Second bottom wall 213 5th convex part 2131 Second recess 2132 Support surface 2133 Third slope 2134 4th Through Hole 2135 Second sealing material 214 Electrical Core Assembly 22 Electric Core 221 Circuit board 23 Second Connector 24 Electric power usage equipment 200 1st direction Second direction Y 3rd direction Z

Claims

1. a first module including a first housing having a receiving cavity; The first housing includes: a first top wall having a first substrate and a first protrusion provided on the first substrate and extending along a first direction; a first sidewall that is arranged along the first direction together with the first substrate and is provided with a first inclined surface located inside the first convex portion, the first inclined surface being arranged to cause a liquid on the first inclined surface to flow outward, the inside being a side of the first sidewall that faces the accommodating cavity, the outside being a side of the first sidewall that faces away from the accommodating cavity, and the direction of the inside facing the outside being perpendicular to the first direction; a first sealing material provided between the first substrate and the first sidewall, connecting the first substrate and the first sidewall, and positioned on a side of the first inclined surface closer to the receiving cavity; a fastener connecting the first substrate and the first side wall.

2. a second protrusion is provided on the first side wall, the second protrusion extends in a direction opposite to the first direction, connects the first sealing material, and a portion of the second protrusion is located inside the first inclined surface; 2. The battery pack according to claim 1, wherein the first convex portion and the second convex portion are provided with a gap therebetween, and the first inclined surface is located between a portion of the first convex portion and a portion of the second convex portion.

3. When viewed along the first direction, the first protrusion is provided around the accommodating cavity, the second protrusion is provided around the accommodating cavity, and the first sealing material is provided around the accommodating cavity; 3. The battery pack according to claim 2, wherein a projection of the first protrusion surrounds a projection of the second protrusion along the first direction.

4. At least a portion of the first protrusion extends beyond the first inclined surface along the first direction, The battery pack according to claim 2 , wherein the second protrusion exceeds the first inclined surface in a direction opposite to the first direction.

5. a first through-hole is provided in the first substrate, and a portion of the fastener is located in the first through-hole; The battery pack according to claim 1 , wherein a projection of the first inclined surface encircles a projection of the first through hole along the first direction.

6. a third protrusion is further provided on the first side wall, the third protrusion being provided on the first inclined surface and extending along a direction opposite to the first direction; At least a portion of the third convex portion exceeds the first inclined surface along a direction opposite to the first direction, a projection of the third protrusion surrounds a projection of the first through hole along the first direction; The battery pack according to claim 5 , wherein the fastener connects the third protrusion.

7. 2. The battery pack according to claim 1, wherein the first side wall is further provided with a first recess, the first recess is recessed along the first direction, and at least a portion of the first protrusion is located within the first recess.

8. 2. The battery pack according to claim 1, wherein the first top wall has a first outer surface, the first outer surface being located on a side of the first top wall along a direction opposite to the first direction, and the first outer surface protruding along the direction opposite to the first direction.

9. 2. The battery pack according to claim 1, further comprising an insulator, the first substrate and the insulator being arranged along the first direction, and the insulator connecting the first substrate.

10. The first side wall further includes a second through hole; the first housing further includes a flow guide plate, the flow guide plate is provided with a second inclined surface, and the second through holes and the second inclined surface are arranged along the first direction; a first notch is provided on the second inclined surface, the second inclined surface is disposed to receive the liquid flowing down from the second through hole and guide the liquid to the first notch portion; The battery pack according to claim 1 , wherein the first notch is disposed so as to allow liquid on the second inclined surface to flow out.

11. the first housing further includes a first bottom wall, the first top wall and the first bottom wall are arranged along the first direction, and the first bottom wall connects the first side wall; a first groove and a third through-hole are formed in the first bottom wall, the first groove is formed in an inner surface of the first bottom wall and is recessed along the first direction, the third through-hole penetrates the first bottom wall, and the inner surface of the first bottom wall is located on a side of the first bottom wall along a direction opposite to the first direction; 2. The battery pack according to claim 1, wherein the first bottom wall is arranged to guide the liquid to flow into the first groove, the first groove is arranged to guide the liquid to flow into the third through hole, and the third through hole is arranged to drain the liquid in the first groove.

12. the assembled battery further includes a second module, the first module and the second module being arranged along the first direction, the second module including a second housing, the second housing including a second top wall, the second top wall including a second substrate, the first bottom wall and the second substrate being arranged along the first direction, a second groove is provided on the second substrate, the second groove being provided on a side of the second substrate along a direction opposite to the first direction and recessed along the first direction; The battery pack according to claim 11 , wherein the second groove is disposed to receive the liquid flowing out from the third through-hole and guide the liquid to be discharged from the second top wall.

13. a drainage portion is further provided on the first bottom wall, the drainage portion is provided on a side of the first bottom wall along the first direction, the drainage portion communicates with the third through-hole, and the drainage portion extends along the first direction; The battery pack according to claim 12 , wherein a projection of the drainage portion is located within a projection of the second groove along the first direction.

14. a portion of the first side wall extends beyond the first bottom wall along the first direction and connects to the second substrate; a fourth convex portion is provided on the second top wall, the fourth convex portion is provided on a side of the second substrate along a direction opposite to the first direction, and extends along the direction opposite to the first direction; the fourth convex portion is located inside the first side wall; and a projection of the fourth convex portion and a projection of the first side wall overlap along a direction from the inside toward the outside; 13. The battery pack according to claim 12, wherein the fourth protrusion has a second notch that communicates with the second groove, and the second notch is positioned to allow liquid to be discharged from the second groove.

15. the second housing further includes a second bottom wall, a second side wall, and a second sealing material, the second top wall and the second bottom wall are arranged along the first direction, the second side wall connects the second top wall and the second bottom wall, and a portion of the second sealing material is located between the second bottom wall and the second side wall and connects the second bottom wall and the second side wall; a fifth protrusion and a second recess are provided on the second bottom wall, the fifth protrusion extends in a direction opposite to the first direction and is provided inside the second sealing material, the second recess is recessed in the first direction and is located inside the fifth protrusion, The second bottom wall further includes a support surface, the support surface being located inside the second recess; the second module further includes an electrical core assembly mounted on the support surface; The battery pack according to claim 12 , wherein the support surface extends beyond the fifth protrusion and the second recess along a direction opposite to the first direction.

16. When viewed along the first direction, the second sealing material is provided around the periphery, the fifth convex portion is provided around the periphery, and the second concave portion is provided around the periphery, 16. The battery pack according to claim 15, wherein, along the first direction, a projection of the second sealing material surrounds a projection of the fifth convex portion, a projection of the fifth convex portion surrounds a projection of the second concave portion, and a projection of the second concave portion surrounds a projection of the support surface.

17. the second bottom wall further includes a third inclined surface and a fourth through hole, the third inclined surface being provided on a side of the second bottom wall along a direction opposite to the first direction and positioned inside the second sealing material; the third inclined surface is disposed to receive the liquid in the second housing and guide the liquid to flow to the fourth through hole; The battery pack according to claim 15 , wherein the fourth through-hole is arranged to allow liquid on the third inclined surface to flow out.

18. A power consumption device comprising the battery pack according to any one of claims 1 to 17.

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