Battery pack and vehicle

Abstract

The utility model relates to a battery pack and a vehicle, a battery box body comprises a battery shell, an internal accessory and connecting glue, a glue overflowing groove and a glue overflowing hole are formed in the battery shell, and the connecting glue comprises a glue body located between the battery shell and the internal accessory and a glue extending part extending from the glue overflowing hole to the glue overflowing groove. The glue body can bond the battery shell and the internal accessory, and the glue extension part forms a similar riveting structure to be further connected with the battery shell, so that the battery shell and the internal accessory are connected into a space structure, the connection strength between the battery shell and the internal accessory is improved, and the mechanical bearing capacity is improved.

Description

Technical Field

[0001] The present disclosure relates to the technical field of battery packs, and in particular, to a battery pack and a vehicle. Background Art

[0002] With the continuous development of new energy vehicles, the design requirements for battery safety performance are getting higher and higher. The bottom plate of the battery box and the liquid cooling plate are independent of each other. Usually, MPP (microporous foamed polypropylene, abbreviated as MPP, made by foaming PP plastic material, hard and light with certain mechanical strength) is filled in the gap between the two for protection and buffering against mechanical scraping of the bottom plate, ball impact, etc. In this solution, the main load-bearing structure of the whole package is the bottom plate. Due to the large size of the battery pack and the limited space for connecting and fixing the liquid cooling plate and the frame. Therefore, the overall stiffness of the battery pack is poor, and it is easily damaged and cracked during mechanical tests. Summary of the Utility Model

[0003] The purpose of the present disclosure is to provide a battery pack and a vehicle. The battery pack can connect the battery housing and internal components into a spatial structure, improve the connection strength between the battery housing and internal components, and enhance the mechanical load-bearing capacity.

[0004] To achieve the above object, according to the first aspect of the present disclosure, there is provided a battery pack, including:

[0005] A battery housing, including an overflow groove and an overflow hole, the overflow groove is located on the outer side surface of the battery housing and is communicated with the inside of the battery housing through the overflow hole, wherein the area of the overflow groove is larger than the area of the overflow hole;

[0006] Internal components, disposed inside the battery housing; and

[0007] A connecting glue, including a glue body located between the battery housing and the internal components, and a glue body extension part extending into the overflow groove and connected to the glue body, for fixedly connecting the internal components and the battery housing.

[0008] Optionally, the overflow groove and the overflow hole are disposed on the side wall or the bottom wall of the battery housing.

[0009] Optionally, the overflow groove is formed by inward depression from the outer side surface of the battery housing, and the overflow hole is located inside the depression.

[0010] Optionally, the connected overflow hole and overflow groove are coaxially arranged.

[0011] Optionally, the ratio of the area of the overflow groove to the area of the overflow hole ≥ 2:1.

[0012] Optionally, the diameter of the overflow hole ≥ 2 mm.

[0013] Optionally, the distance between the surface of the colloid extension away from the glue overflow hole and the bottom surface of the glue overflow groove is less than or equal to the depth of the glue overflow groove.

[0014] Optionally, the distance between the surface of the colloid extension away from the glue overflow hole and the bottom surface of the glue overflow groove is ≥2 mm.

[0015] Optionally, the connecting glue is a foaming potting glue.

[0016] Optionally, the battery housing includes a frame and a bottom plate connected to the bottom of the frame;

[0017] The bottom surface of the bottom plate forms the glue overflow groove, and the bottom plate is provided with a glue overflow hole communicating the glue overflow groove and the top surface of the bottom plate; and / or

[0018] The internal fitting includes a liquid cooling plate disposed inside the frame; the glue body is located between the liquid cooling plate and the bottom plate, and the glue body is fixedly connected to the liquid cooling plate and the bottom plate respectively.

[0019] Optionally, the liquid cooling plate is provided with a through hole, and the connecting glue further includes a cavity extension portion extending from the through hole to the accommodation cavity of the battery housing, and the accommodation cavity is used for accommodating the battery module of the battery pack.

[0020] Optionally, there are a plurality of glue overflow holes, which are arranged at intervals on the bottom plate;

[0021] There are a plurality of glue overflow grooves, which are arranged at intervals on the bottom plate, and one glue overflow groove communicates with at least one glue overflow hole; and / or

[0022] The glue overflow holes and the glue overflow grooves correspond one by one.

[0023] Optionally, the liquid cooling plate includes a flow channel plate and a flat plate, and the flow channel plate and the flat plate enclose an internal flow channel;

[0024] The flat plate is located on the side of the flow channel plate away from the bottom plate, and the flow channel plate is formed with a depression facing away from the bottom plate, and the glue overflow hole and the glue overflow groove correspond to the depression.

[0025] Optionally, the battery housing further includes an upper cover plate connected to the upper part of the frame, the top surface of the upper cover plate is provided with a second glue overflow hole, and the top surface of the upper cover plate is provided with a second glue overflow groove corresponding to the second glue overflow hole;

[0026] The battery pack further includes a second connecting adhesive. The second connecting adhesive includes a second adhesive body located inside the frame and a second adhesive extension portion connected to the second adhesive body. The second adhesive extension portion extends to the second glue overflow hole and at least a part of the second glue overflow groove, and is used to fixedly connect the upper cover plate to the internal fittings inside the frame.

[0027] Optionally, the battery housing includes at least one of a frame, a bottom plate, and an upper cover plate;

[0028] The internal fittings include a battery cell module;

[0029] At least one of the frame, the bottom plate, and the upper cover plate is provided with the glue overflow groove and the glue overflow hole;

[0030] The adhesive body of the connecting adhesive is located between the battery cell module and the battery housing, and the adhesive extension portion extends to the glue overflow groove through the glue overflow hole, and is used to fixedly connect the battery cell module to the battery housing.

[0031] According to a second aspect of the present disclosure, a vehicle is further provided. The vehicle includes the above-mentioned battery pack.

[0032] Through the above technical solution, that is, the battery pack of the present disclosure includes a battery housing, internal fittings, and a connecting adhesive, and a glue overflow groove and a glue overflow hole are formed on the battery housing. Since the connecting adhesive includes an adhesive body located between the battery housing and the internal fittings, and an adhesive extension portion extending from the glue overflow hole to the glue overflow groove, the adhesive body can bond the battery housing and the internal fittings, and the adhesive extension portion forms a structure similar to a riveting structure to further connect with the battery housing, so as to connect the battery housing and the internal fittings into a spatial structure body, improve the connection strength between the battery housing and the internal fittings, and enhance the mechanical load-bearing capacity.

[0033] Other features and advantages of the present disclosure will be described in detail in the subsequent specific implementation section. Description of the Drawings

[0034] The drawings are used to provide a further understanding of the present disclosure, and constitute a part of the specification. They are used to explain the present disclosure together with the following specific implementation manners, but do not constitute a limitation to the present disclosure. In the drawings:

[0035] Figure 1 is a bottom view of a battery box body provided by some embodiments of the present disclosure.

[0036] Figure 2 is based on Figure 1 The A-A cross-sectional view in

[0037] Figure 3 is based on Figure 1 The enlarged view of part B in

[0038] Figure 4 is based on Figure 2 the enlarged view of part C in

[0039] Figure 5 It is a schematic diagram of the dimensional relationship between the components of the battery box body provided by some embodiments of the present disclosure.

[0040] Figure 6 is based on Figure 2 the enlarged view of part C in , where the foaming potting glue is hidden.

[0041] Description of the reference numerals

[0042] 100 - battery housing; 110 - frame; 120 - bottom plate; 121 - glue overflow groove; 122 - glue overflow hole; 200 - internal fittings; 210 - liquid cooling plate; 211 - flow channel plate; 212 - flat plate; 300 - connecting glue; 310 - glue body; 320 - glue body extension part. Detailed implementation manners

[0043] The following will describe in detail the specific implementation manners of the present disclosure with reference to the accompanying drawings. It should be understood that the specific implementation manners described herein are only used to explain and illustrate the present disclosure, and are not used to limit the present disclosure.

[0044] In the present disclosure, unless otherwise stated, the orientation terms such as "top, bottom" generally refer to the top and bottom of the battery box body during actual use. "Inside, outside" refer to the inside and outside of the corresponding component contour; "far, near" refer to the corresponding structure or component being far from or close to another structure or component. In addition, the terms "first", "second", etc. used in the present disclosure are used to distinguish one element from another, and do not have an order or importance. In addition, in the following description, when referring to the drawings, unless otherwise explained, the same reference numerals in different drawings represent the same or similar elements. The above definitions are only used to explain and illustrate the present disclosure, and should not be construed as a limitation of the present disclosure.

[0045] The object of the present disclosure is to provide a battery pack and a vehicle, and the battery pack can connect the battery housing and the internal fittings into a spatial structure body, improve the connection strength between the battery housing and the internal fittings, and enhance the mechanical load-bearing capacity.

[0046] To achieve the above object, according to the first aspect of the present disclosure, a battery pack is provided, which includes a battery housing 100, internal fittings 200, and a connecting adhesive 300. The battery housing 100 includes an overflow groove 121 and an overflow hole 122. The overflow groove 121 is located on the outer side of the battery housing 100 and communicates with the inside of the battery housing 100 through the overflow hole 122, wherein the area of the overflow groove 121 is larger than the area of the overflow hole 122; the internal fittings 200 are disposed inside the battery housing 100; the connecting adhesive 300 includes an adhesive body 310 located between the battery housing and the internal fittings, and a colloidal extension 320 extending into the overflow groove 121 and connected to the adhesive body 310, for fixedly connecting the internal fittings 200 and the battery housing 100.

[0047] Through the above technical solution, that is, the battery pack of the present disclosure includes a battery housing 100, internal fittings 200, and a connecting adhesive 300, and an overflow groove 121 and an overflow hole 122 are formed on the battery housing 100. Since the connecting adhesive 300 includes an adhesive body 310 located between the battery housing 100 and the internal fittings 200, and a colloidal extension 320 extending from the overflow hole 122 to the overflow groove 121, the adhesive body 310 can bond the battery housing 100 and the internal fittings 200, and the colloidal extension 320 forms a structure similar to a riveting structure to further connect with the battery housing 100, thereby connecting the battery housing 100 and the internal fittings 200 into a spatial structure body, improving the connection strength between the battery housing 100 and the internal fittings 200, and enhancing the mechanical load-bearing capacity.

[0048] Optionally, the overflow groove 121 and the overflow hole 122 can be disposed on the side wall or the bottom wall of the battery housing 100. It should be noted that the battery housing 100 may include a frame 110, and the overflow groove 121 and the overflow hole 122 can be provided on the side wall of the frame 110, so as to fixedly connect the internal fittings 200 and the frame 110 to improve the connection strength of the battery pack. In addition, the battery housing 100 may further include a bottom plate 120, and the overflow groove 121 and the overflow hole 122 can also be provided on the bottom plate 120.

[0049] It can be understood that the internal fitting 200 may further include a battery module, and the connection glue 300 is used to realize the connection between the battery module and the frame 110 or the bottom plate 120. In some embodiments, the battery housing 100 includes a frame 110 and a bottom plate 120 connected to the bottom of the frame 110; an overflow glue groove 121 is formed on the bottom surface of the bottom plate 120, and an overflow glue hole 122 communicating the overflow glue groove 121 and the top surface of the bottom plate 120 is provided on the bottom plate 120; the internal fitting 200 may include a liquid cooling plate 210 disposed inside the frame 110; the glue body 310 is located between the liquid cooling plate 210 and the bottom plate 120, and the glue body 310 is fixedly connected to the liquid cooling plate 210 and the bottom plate 120 respectively.

[0050] In order to better realize that the colloid extension part 320 can be better connected to the bottom plate 120, as Figure 3 shown, in some embodiments, the projection of the overflow glue hole 122 on the plane where the bottom plate 120 is located is smaller than the projection of the overflow glue groove 121 on the plane where the bottom plate 120 is located, so that the colloid extension part 320 extends from the overflow glue hole 122 to the inside of the overflow glue groove 121. Since the area of the colloid extension part 320 inside the overflow glue groove 121 is larger than the area at the overflow glue hole 122, therefore, the colloid extension part 320 can also play a role similar to that of a rivet, and the colloid extension part 320 is more reliably connected to the bottom plate 120, improving the strength of the battery box.

[0051] In some embodiments, the connection glue 300 may be a foaming potting glue, and the internal fitting 200 may include a liquid cooling plate 210. Compared with the related art, the foaming glue body of the foaming potting glue between the bottom plate 120 and the liquid cooling plate 210 of the battery housing 100 can be fixedly connected to the liquid cooling plate 210 and the bottom plate 120 respectively. Since the foaming glue body is formed by foaming, therefore, the bonding effect between the bottom plate 120 and the liquid cooling plate 210 can be better realized (that is, the bonding area between the two can be increased). At the same time, the colloid extension part 320 of the connection glue 300 can form a riveting structure on the bottom plate 120, further improving the connection strength. The battery pack can effectively utilize the foaming filling and bonding performance of the foaming potting glue to fill and bond the bottom plate 120 and the liquid cooling plate 210 into a space structure body, improving the strength of the battery pack and greatly enhancing the mechanical bearing capacity of the liquid cooling plate 210.

[0052] In some embodiments, the glue overflow groove 121 is formed by inward depression from the outer side surface of the battery housing 100, and the glue overflow hole 122 is located inside the depression. Among them, the glue overflow groove 121 can be formed by inward depression from the outer side surface of the battery housing 100 (in the direction of the battery module), and the glue overflow hole 122 is inside the depression to achieve communication with the inside of the battery housing 100. When the foaming potting glue is foaming, it can enter the inside of the glue overflow groove 121 through the glue overflow hole 122 to form a riveting structure (or an inverted buckle structure).

[0053] The glue overflow hole 122 and the glue overflow groove 121 can be of any shape. For example, circular, oval, triangular, rectangular or other polygons. In some embodiments, both the glue overflow hole 122 and the glue overflow groove 121 can be circular holes, which are convenient for processing and manufacturing. For example, the above-mentioned glue overflow hole 122 and glue overflow groove 121 can be directly processed on the bottom plate 120 by stamping process.

[0054] For the convenience of processing, at the same time, to make the foaming potting glue flowing out of the glue overflow hole 122 can be more evenly distributed in the glue overflow groove 121, as Figure 3 shown, in some embodiments, the connected glue overflow hole 122 and the glue overflow groove 121 are coaxially arranged. That is, the center of the projection of the glue overflow hole 122 on the bottom plate 120 coincides with the center of the projection of the glue overflow groove 121 on the bottom plate 120. Since the diameter of the glue overflow groove 121 is larger than the diameter of the glue overflow hole, the projection of the glue overflow hole 122 on the bottom plate 120 is located inside the projection of the glue overflow groove 121 on the bottom plate 120.

[0055] In order to make the colloid extension part 320 play a better fixing role, the area of the glue overflow groove 121 needs to be larger than the area of the glue overflow hole 122. In some embodiments, the ratio of the area A1 of the glue overflow groove 121 to the area A2 of the glue overflow hole 122 is ≥2:1. Among them, it can be understood that the area here refers to the projected area in the plane where the bottom plate 120 is located, that is, the projected area of the glue overflow groove 121 in the plane where the bottom plate 120 is located is greater than or equal to 2 times the projected area of the glue overflow hole 122 in the plane where the bottom plate 120 is located. So that the colloid extension part 320 and the bottom plate 120 have a larger contact area to strengthen the connection.

[0056] For the convenience of the foaming process, the foaming potting glue between the liquid cooling plate 210 and the bottom plate 120 can flow out of the glue overflow hole 122 smoothly and enter the glue overflow groove 121. In some embodiments, the diameter of the glue overflow hole 122 is ≥2mm. Among them, the minimum diameter of the glue overflow hole 122 is 2mm, and it can also be 2.5mm, 3mm, etc., or larger, to avoid the foaming potting glue being trapped by air and unable to flow out.

[0057] As Figure 5As shown, in some embodiments, the distance H1 between the surface of the colloid extension portion 320 away from the glue overflow hole 122 and the bottom surface of the glue overflow groove 121 is less than or equal to the depth H2 of the glue overflow groove 121. Among them, in actual use, the surface of the colloid extension portion 320 is flush with the bottom surface of the glue overflow groove 121 or the surface of the colloid extension portion 320 is above the bottom surface of the glue overflow groove 121, so as to avoid interference with other structures at the bottom of the battery pack.

[0058] In actual operation, by uniformly pouring foaming potting glue on the side surfaces of the liquid cooling plate 210 and the flow channel plate 211, since the foaming glue foams and quickly fills the space, in order to avoid the bottom plate 120 being arched by the acting force of the foaming glue, a glue pressing tooling is added. The installation surface of the tooling is flush with the plane of the bottom plate 120. At this time, the bottom surface of the colloid extension portion 320 in the glue overflow groove 121 does not exceed the bottom surface of the bottom plate 120. If the glue overflow groove 121 is relatively deep and it is necessary to control the height of the bottom surface of the colloid extension portion 320 in the glue overflow groove 121, a boss can be added to the corresponding glue pressing tooling and pressed into the glue overflow groove 121. At this time, the distance H1 between the surface of the colloid extension portion 320 away from the glue overflow hole 122 and the bottom surface of the glue overflow groove 121 is less than the depth H2 of the glue overflow groove 121.

[0059] In order to ensure that the colloid extension portion 320 has sufficient connection strength, in some embodiments, the distance H1 between the surface of the colloid extension portion 320 away from the glue overflow hole 122 and the bottom surface of the glue overflow groove 121 is H1≥2mm. By further limiting the thickness of the colloid extension portion 320 in the glue overflow groove 121, its strength can be improved to the greatest extent.

[0060] Since the glue overflow groove 121 is provided on the bottom plate 120, therefore, under the condition that the relative space structure remains unchanged, the side surface of the bottom plate 120 facing the liquid cooling plate 210 will be closer to the liquid cooling plate 210. Therefore, it is necessary to limit the minimum gap between the liquid cooling plate 210 and the bottom plate 120. On the one hand, it is to ensure the normal foaming of the foaming potting glue; on the other hand, the minimum gap is also used to avoid the bottom plate 120 being easily affected by scraping the bottom of the liquid cooling plate 210. As Figure 5 As shown, in some embodiments of the present disclosure, the minimum distance H3 between the bottom plate 120 and the liquid cooling plate 210 is H3≥2mm. The distance between the bottom plate 120 and the liquid cooling plate 210 can also be 2.5mm or 3mm, and those skilled in the art can make reasonable designs according to the specific structure and space of the battery pack.

[0061] In some other embodiments, the liquid cooling plate 210 may further be provided with through holes, and the connecting adhesive 300 further includes a cavity extension portion which extends from the through holes to the accommodation cavity of the battery housing 100, and the accommodation cavity is used for accommodating the battery modules of the battery pack. Wherein, the interior of the battery housing 100 further includes an accommodation cavity for accommodating the battery modules and is located above the liquid cooling plate 210. The liquid cooling plate 210 may be formed with through holes communicating the accommodation cavity with the gap between the liquid cooling plate 210 and the bottom plate 120. When the foaming potting adhesive of the connecting adhesive 300 foams, it can enter the interior of the accommodation cavity through the through holes to form a cavity extension portion. It can better realize the connection with the liquid cooling plate 210, and at the same time can also be connected to the battery modules, further improving the connection strength of the battery pack.

[0062] Optionally, there are a plurality of glue overflow holes 122, which are arranged at intervals on the bottom plate 120; there are a plurality of glue overflow grooves 121, which are arranged at intervals on the bottom plate 120, and one glue overflow groove 121 communicates with at least one glue overflow hole 122; wherein, the plurality of glue overflow holes 122 can communicate the gap between the liquid cooling plate 210 and the bottom plate 120 with the glue overflow groove 121, so that the foam glue body of the foamed potting adhesive is connected to the colloid extension portion 320, so as to better fixedly connect the bottom plate 120, thereby improving the support for the internal liquid cooling plate 210 and improving the safety of the battery modules inside the battery pack.

[0063] It can be understood that the plurality of glue overflow holes 122 can be respectively communicated with one glue overflow groove 121, that is, the colloid extension portions 320 extending from the plurality of glue overflow holes 122 can be gathered in one glue overflow groove 121, so as to realize the fixation of the bottom plate 120. For example, in some embodiments, a plurality of glue overflow holes 122 are arranged at intervals in a certain direction of the bottom plate 120, and the glue overflow groove 121 is configured as a strip-shaped groove extending in this direction and is respectively communicated with the plurality of glue overflow holes 122. Therefore, the colloid extension portion 320 is a strip-shaped structure in the strip-shaped groove and is respectively connected to the foam glue body 310 through the glue overflow holes 122.

[0064] As Figure 1 shown, in some embodiments of the present disclosure, there are a plurality of glue overflow holes 122 and a plurality of glue overflow grooves 121, and they are in one-to-one correspondence. There are also a plurality of colloid extension portions 320, and each colloid extension portion 320 corresponds to one glue overflow hole 122 and a glue overflow groove 121 communicated with the glue overflow hole 122. Thus, the bottom plate 120 is connected to the foam glue body between the liquid cooling plate 210 and the bottom plate 120 through the plurality of colloid extension portions 320, so that the liquid cooling plate 210 and the bottom plate 120 are connected into a whole through the foaming potting adhesive, improving the overall strength of the battery pack.

[0065] The glue overflow hole 122 and the glue overflow groove 121 can be constructed in any suitable form. Optionally, the liquid cooling plate 210 may include a flow channel plate 211 and a flat plate 212, and the flow channel plate 211 and the flat plate 212 enclose an internal flow channel; the flat plate 212 is located on the side of the flow channel plate 211 away from the bottom plate 120, and the flow channel plate 211 is formed with a depression facing away from the bottom plate 120, and the glue overflow hole 122 and the glue overflow groove 121 correspond to the depression. It should be noted that, in order to form the internal flow channel of the liquid cooling plate 210, the flow channel plate 211 is formed with a depression facing away from the bottom plate 120, and the top of the depression is used to connect with the flat plate 212, so as to form an internal flow channel between the flow channel plate 211 and the flat plate 212. In order to make the foaming potting glue fill the gap between the flow channel plate 211 and the flat plate 212, especially fill it sufficiently in the depression part, the glue overflow groove 121 and the glue overflow hole 122 are arranged at the position of the bottom plate 120 corresponding to the depression.

[0066] It should be noted that the liquid cooling plate 210 can be a structural member with an internal flow channel surrounded by a flow channel plate 211 and a flat plate 212. Among them, the flat plate 212 is closer to the battery module, and the flow channel plate 211 is closer to the bottom plate 120. Therefore, the foaming glue body (glue body 310) of the foaming potting glue can be filled in the gap between the bottom plate 120 and the flow channel plate 211, so that the foaming glue body is bonded to the flow channel plate 211 and the bottom plate 120 together, thereby improving the support strength for the liquid cooling plate 210 and the battery module above the liquid cooling plate 210. At the same time, since the glue body 310 is located between the bottom plate 120 and the liquid cooling plate 210, it can also be used for the protection and buffering during mechanical scraping and impact of the bottom plate 120.

[0067] In the battery pack provided in this embodiment, the foaming potting glue is directly filled in the space between the outer surface (the side of the flow channel plate 211) of the liquid cooling plate 210 and the inner surface of the bottom plate 120. The foaming potting glue is effectively used to foam, fill and bond the bottom plate 120 and the liquid cooling plate 210 into a space structure body, greatly improving the mechanical bearing capacity of the liquid cooling plate 210. The ability of the foaming potting glue to resist impact, etc.; the foaming potting glue has strong filling ability, and theoretically can fill all the gaps between the liquid cooling plate 210 and the bottom plate 120 relatively fully, so as to avoid corrosion by external sand and gravel particles and substances with high acidity and alkalinity, and improve the long-life ability of the liquid cooling plate 210. The space between the liquid cooling plate 210 and the bottom plate 120 is relatively uniform, and the flat-pack process is easier to implement, which is convenient for filling the potting glue and the foaming rate is close to the same with good performance.

[0068] It can be understood that by providing the glue overflow groove 121 and the glue overflow hole 122, the problem of air entrapment caused by foaming of the foaming potting glue between the internal fittings 200 and the battery housing 100 (such as the liquid cooling plate 210 and the bottom plate 120) can be further solved.

[0069] It should be noted that the application of this foaming potting adhesive is not limited to the bottom plate 120. If a foaming potting adhesive is used inside the battery pack, this overflow groove 121 can also be added on the surface of the upper cover plate of the battery pack to improve the overall connection strength between the upper cover plate and the internal components (such as battery modules) of the battery pack.

[0070] Optionally, the battery housing 100 further includes an upper cover plate connected to the upper part of the frame 110. The top surface of the upper cover plate is provided with a second overflow hole, and the top surface of the upper cover plate is provided with a second overflow groove corresponding to the second overflow hole; the battery pack body further includes a second connection adhesive, and the second connection adhesive includes a second adhesive body located inside the frame 110 and a second colloidal extension portion connected to the second adhesive body. The second colloidal extension portion extends to the second overflow hole and at least part of the second overflow groove to fixedly connect the upper cover plate and the internal component 200 (such as a battery module) inside the frame 110. Through the above settings, the upper cover plate can also form an integral body with the internal structure of the frame to improve the overall strength of the battery pack.

[0071] It should be noted that the arrangement of the above-mentioned second overflow hole and second overflow groove can refer to the specific arrangement of the overflow hole 122 and overflow groove 121 on the bottom plate 120 in the above embodiment, which will not be elaborated here one by one. Similarly, it can also improve the connection strength between the upper cover plate and the internal component 200 and play a role similar to that of a rivet.

[0072] In some other embodiments, the battery housing 100 may include at least one of a frame 110, a bottom plate 120, and an upper cover plate; the internal component 200 includes a cell module and a battery module; at least one of the frame 110, the bottom plate 120, and the upper cover plate is provided with the overflow groove 121 and the overflow hole 122; the adhesive body 310 of the connection adhesive 300 is located between the cell module and the battery housing 100, and the colloidal extension portion 320 extends through the overflow hole 122 to the overflow groove 121 to fixedly connect the cell module and the battery housing 100. For example, the adhesive body 310 can be a foaming potting adhesive, and the overflow groove 121 and the overflow hole 122 can be respectively formed on the frame 110, the bottom plate 120, and the upper cover plate. Through the foaming process, the battery module can be simultaneously connected and fixed to the frame 110, the bottom plate 120, and the upper cover plate to form an integral structure, further improving the strength of the battery pack. Of course, it should be noted that the above-mentioned overflow groove 121 and overflow hole 122 can also be formed on one or both of the above-mentioned frame 110, bottom plate 120, and upper cover plate, which can also meet the requirement of improving the strength of the battery pack.

[0073] According to a second aspect of the present disclosure, embodiments of the present disclosure further provide a vehicle, which includes the above-mentioned battery pack. Therefore, the vehicle also has the advantages of the above-mentioned battery pack, which will not be elaborated here one by one.

[0074] For the battery pack and the vehicle of the present disclosure, the battery pack includes a battery housing 100, internal fittings 200, and a connecting adhesive 300. An overflow adhesive groove 121 and an overflow adhesive hole 122 are formed on the battery housing 100. Since the connecting adhesive 300 includes an adhesive body 310 located between the battery housing 100 and the internal fittings 200, and a colloidal extension part 320 extending from the overflow adhesive hole 122 to the overflow adhesive groove 121, the adhesive body 310 can bond the battery housing 100 and the internal fittings 200, and the colloidal extension part 320 forms a structure similar to a riveting structure to be further connected to the battery housing 100, thereby connecting the battery housing 100 and the internal fittings into a spatial structure body, improving the connection strength between the battery housing 100 and the internal fittings 200, and enhancing the mechanical load-bearing capacity.

[0075] The preferred embodiments of the present disclosure have been described in detail above with reference to the accompanying drawings. However, the present disclosure is not limited to the specific details in the above embodiments. Within the scope of the technical concept of the present disclosure, various simple modifications can be made to the technical solutions of the present disclosure, and these simple modifications all fall within the protection scope of the present disclosure.

[0076] In addition, it should be noted that, among the various specific technical features described in the above specific embodiments, they can be combined in any suitable manner without conflict. To avoid unnecessary repetition, the present disclosure will not separately describe various possible combination methods.

[0077] In addition, any combination can be made between various different embodiments of the present disclosure, as long as it does not violate the idea of the present disclosure, it should also be regarded as the content disclosed by the present disclosure.

Claims

1. A battery pack, characterized in that, Comprising: A battery housing, including a glue overflow groove and a glue overflow hole, wherein the glue overflow groove is located on the outer side surface of the battery housing and communicates with the inside of the battery housing through the glue overflow hole. Among them, the area of the glue overflow groove is larger than the area of the glue overflow hole; Internal fittings, arranged inside the battery housing; And A connecting glue, including a glue body located between the battery housing and the internal fittings, and a glue body extension part extending into the glue overflow groove and connected to the glue body, for fixedly connecting the internal fittings and the battery housing.

2. The battery pack according to claim 1, characterized in that, The glue overflow groove and the glue overflow hole are arranged on the side wall or the bottom wall of the battery housing.

3. The battery pack according to claim 1, characterized in that, The glue overflow groove is formed by inward depression from the outer side surface of the battery housing, and the glue overflow hole is located inside the depression.

4. The battery pack according to claim 3, wherein, The connected glue overflow hole and the glue overflow groove are coaxially arranged.

5. The battery pack according to claim 3, characterized in that, The ratio of the area of the glue overflow groove to the area of the glue overflow hole ≥ 2:

1.

6. The battery pack according to claim 5, wherein The diameter of the glue overflow hole ≥ 2 mm.

7. The battery pack according to claim 1, characterized in that, The distance between the surface of the glue body extension part far from the glue overflow hole and the bottom surface of the glue overflow groove is less than or equal to the depth of the glue overflow groove.

8. The battery pack according to claim 7, wherein The distance between the surface of the glue body extension part far from the glue overflow hole and the bottom surface of the glue overflow groove ≥ 2 mm.

9. The battery pack according to claim 1, characterized in that, The connecting glue is a foaming potting glue.

10. The battery pack according to any one of claims 1-9, characterized in that, The battery housing includes a frame and a bottom plate connected to the bottom of the frame; The bottom surface of the bottom plate forms the glue overflow groove, and the bottom plate is provided with the glue overflow hole communicating the glue overflow groove and the top surface of the bottom plate; And / or The internal fittings include a liquid cooling plate arranged inside the frame; the glue body is located between the liquid cooling plate and the bottom plate, and the glue body is fixedly connected to the liquid cooling plate and the bottom plate respectively.

11. The battery pack according to claim 10, wherein, The liquid cooling plate is provided with through holes, and the connecting glue further includes a cavity extension part, which extends from the through holes to the accommodation cavity of the battery housing, and the accommodation cavity is used to accommodate the battery module of the battery pack.

12. The battery pack according to claim 10, characterized in that, There are multiple glue overflow holes, and they are arranged at intervals on the bottom plate; There are multiple glue overflow grooves, and they are arranged at intervals on the bottom plate. One glue overflow groove communicates with at least one glue overflow hole; and / or The glue overflow holes and the glue overflow grooves correspond one by one.

13. The battery pack according to claim 10, characterized in that, The liquid cooling plate includes a flow channel plate and a flat plate, and the flow channel plate and the flat plate enclose an internal flow channel; The flat plate is located on the side of the flow channel plate away from the bottom plate, and the flow channel plate is formed with a depression facing away from the bottom plate direction, and the glue overflow hole and the glue overflow groove correspond to the depression.

14. The battery pack according to claim 10, wherein, The battery housing further includes an upper cover plate connected to the upper part of the frame. The top surface of the upper cover plate is provided with a second glue overflow hole, and the top surface of the upper cover plate is provided with a second glue overflow groove corresponding to the second glue overflow hole; The battery pack further includes a second connecting glue, which includes a second glue body located inside the frame and a second glue body extension part connected to the second glue body. The second glue body extension part extends into the second glue overflow hole and at least part of the second glue overflow groove, for fixedly connecting the upper cover plate and the internal fittings inside the frame.

15. The battery pack according to claim 1, characterized in that, The battery housing includes at least one of a frame, a bottom plate and an upper cover plate; The internal fittings include a battery cell module; At least one of the described frame, the described bottom plate, and the described upper cover plate is provided with the glue overflow groove and the glue overflow hole; The glue body of the connecting glue is located between the battery cell module and the battery housing, and the glue body extension extends to the glue overflow groove through the glue overflow hole to fixedly connect the battery cell module and the battery housing.

16. A vehicle, characterized in that, The vehicle includes the battery pack according to any one of claims 1-15.

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