Battery pack shell and battery pack

Abstract

The utility model discloses a battery pack shell and a battery pack, the battery pack shell comprises an upper cover and a lower box body, and an accommodating cavity is defined between the upper cover and the lower box body; and the supporting assembly is arranged in the containing cavity, the two ends of the supporting assembly are connected with the lower box body, and the supporting assembly is used for supporting the upper cover in the vertical direction. According to the battery pack shell disclosed by the utility model, the supporting assembly is arranged between the upper cover and the lower box body, so that the overall strength of the battery pack is improved, the treading performance of the battery pack is improved, the abnormal sound condition is avoided, and the service life of the battery pack is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to battery manufacturing technical field especially is related to a battery package shell and battery package. BACKGROUND

[0002] The related art points out that with the rapid development and iteration of the automobile industry, the cost of the battery package is particularly prominent, and various complex working conditions are encountered during the driving of the electric vehicle. In order to improve the ability of the battery package to cope with various working conditions, the structural strength of the battery package must be improved, and the design method of the battery package structure directly affects the overall safety performance of the battery package. With the attention to safety performance and energy, the safety performance of the battery package is increasingly important; with the development of new processes and new technologies, the battery package structure also appears in various forms; and with the continuous improvement of the energy density of the battery package, the high-integration battery package structure is particularly important.

[0003] The original battery package structure has a large cavity area, and there is no electric core covering under the upper cover of the battery package. The performance of the battery package is difficult to guarantee when the structure is stepped on the top, and the upper cover of the battery package is prone to abnormal noise problem when stepped on, SUMMARY

[0004] The utility model aims at solving one of the technical problems existing in the prior art. Therefore, the utility model provides a battery package shell which improves the overall structural strength of the battery package.

[0005] The utility model further provides a battery package with the above-mentioned battery package shell.

[0006] According to the battery package shell of the utility model first aspect, including: upper cover and lower box, the upper cover and lower box between define the accommodating cavity;Supporting assembly, the supporting assembly is located in the accommodating cavity, both ends of the supporting assembly are connected with the lower box, and the upper cover is supported in the vertical direction.

[0007] According to the battery package shell of the utility model, the supporting assembly is arranged between the upper cover and the lower box, the overall strength of the battery package is improved, the stepping performance of the battery package is improved, the abnormal noise condition is avoided, and the service life of the battery package is prolonged.

[0008] In some embodiments, the supporting assembly includes a support rod and a support seat, both ends of the support rod are connected with one of the support seats respectively, and the support rod and the support seat are interference fit.

[0009] In some embodiments, the support seat includes a seat body and a support plate, the support plate is connected with the seat body, the seat body is connected with the lower box, the support plate is bent to define a groove, and both ends of the support rod are arranged in the groove.

[0010] In some embodiments, the support rod comprises a first rod and a second rod, the first rod is sleeved in the second rod, and the second rod is formed with a reinforcing portion extending in the length direction.

[0011] In some embodiments, the length L2 of the support assembly is consistent with the width dimension of the accommodating cavity.

[0012] In some embodiments, the length L1 of the support rod satisfies: L1 = L2 - 2 * t1, wherein L2 is the length of the support assembly, and t1 is the thickness of the seat body.

[0013] In some embodiments, the length a and the width b of the seat body satisfy: a = b (0.05-0.1) * L2, and / or the length c of the support plate satisfies: a >= c >= 0.5 * a, and / or the height d of the support plate satisfies: a >= d >= 0.5 * a, and / or the chamfer radius r of the support plate is not less than 5 mm.

[0014] In some embodiments, the thickness t2 of the support plate satisfies: 3 mm >= t1 = t2 >= 2 mm, and / or the wall thickness t3 of the first rod and the wall thickness t4 of the second rod satisfy: 1.5 mm >= t3 = t4 >= 1 mm.

[0015] In some embodiments, the width k of the reinforcing portion satisfies: k >= 2 * t3, and / or the length j of the reinforcing portion satisfies: j >= 2 * k, and / or the width m of the support rod satisfies: m = a - 2 * t2, and / or the height n of the support rod satisfies: n = m - 2 * k.

[0016] The battery pack according to the second aspect of the present application comprises the battery pack shell according to the first aspect of the present application.

[0017] The battery pack according to the present application improves the anti-treading performance of the battery pack and the overall structural strength of the battery pack by setting the battery pack shell according to the first aspect.

[0018] Additional aspects and advantages of the present application will be given in part in the following description, will become apparent from the following description, or will be learned by practice of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 is a schematic view of a battery pack shell according to an embodiment of the present application;

[0020] Figure 2 is Figure 1 is a schematic view of a support assembly shown in FIG. 1;

[0021] Figure 3 yes Figure 2 A schematic side view of the support assembly shown in FIG;

[0022] Figure 4 yes Figure 2 The local enlarged view of point D shown in FIG;

[0023] Figure 5 yes Figure 2 AA cross-sectional schematic diagram shown in;

[0024] Figure 6 yes Figure 2 Schematic diagram of the BB cross section shown in .

[0025] Reference numerals:

[0026] 100. Battery pack shell; 1. Lower box; 2. Support assembly; 21. Support rod; 211. First rod; 212. Second rod; 2121. Reinforcement; 22. Support seat; 221. Seat body; 222. Support plate; 2221. Groove. DETAILED DESCRIPTION

[0027] The following describes in detail embodiments of the present invention, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to explain the present invention, and should not be construed as limiting the present invention.

[0028] Reference below Figure 1 and Figure 2 A battery pack housing 100 according to an embodiment of the first aspect of the present invention is described.

[0029] like Figure 1 As shown, the battery pack housing 100 according to the embodiment of the first aspect of the present utility model includes: an upper cover, a lower box body 1 and a support assembly 2.

[0030] Specifically, a housing cavity is defined between the upper cover and the lower case 1. A support assembly 2 is disposed within the cavity. Both ends of the support assembly 2 are connected to the lower case 1, providing vertical support for the upper cover. As shown in the figure, the two ends of the support assembly 2 are connected to the two sides of the lower case 1, respectively, and the upper cover is disposed above the support assembly 2. The overall structure is simple and highly robust.

[0031] According to the battery pack shell 100 of the embodiment of the present invention, by providing a support assembly 2, the support assembly 2 is arranged between the upper cover and the lower box body 1, thereby improving the overall strength of the battery pack, enhancing the pedaling performance of the battery pack, avoiding the generation of abnormal noise, and extending the service life of the battery pack.

[0032] In some embodiments, the support assembly 2 and the upper cover are provided with foam to avoid direct contact and friction between the support assembly 2 and the upper cover, thereby avoiding the occurrence of local wear of the upper cover.

[0033] In some embodiments of the utility model, the support assembly 2 comprises: a support rod 21 and a support seat 22, both ends of the support rod 21 are connected with a support seat 22 respectively, and the support rod 21 and the support seat 22 are interference fit, the connection firmness and reliability between the support rod 21 and the support seat 22 are improved, and the interference fit can effectively cope with external impact, and the safety and structural strength of the battery pack are improved.

[0034] In some embodiments of the utility model, the support seat 22 comprises a seat body 221 and a support plate 222, the support plate 222 is connected with the seat body 221, the seat body 221 is connected with the lower box body 1, the support plate 222 is bent to define a groove 2221, both ends of the support rod 21 are arranged in the groove 2221, so that the close connection between the support rod 21 and the support seat 22 is ensured, and the support rod 21 is not easy to fall off, and the stability of the overall structure is ensured.

[0035] In some embodiments of the utility model, the support rod 21 comprises a first rod 211 and a second rod 212, the first rod 211 is sleeved in the second rod 212, and the second rod 212 is formed with a reinforcing portion 2121 extending in the length direction, so that the support assembly 2 has better bending stiffness and supporting stiffness, the structural stability of the support rod 21 is improved by cooperation of the first rod 211 and the second rod 212, external pressure can be better resisted, and the structural strength of the support rod 21 is further improved by the reinforcing portion 2121.

[0036] In some embodiments of the utility model, the length L2 of the support assembly 2 is consistent with the width size of the containing cavity, effective support can be provided when the battery pack is subjected to transverse external force, unnecessary deformation between the upper cover and the lower box body 1 is prevented, and the battery pack shell 100 can obtain better transverse stability.

[0037] In some embodiments of the utility model, as shown in the figure, the length L1 of the support rod 21 satisfies: L1=L2-2*t1, wherein L2 is the length of the support assembly 2, and t1 is the thickness of the seat body 221. That is, the length of the support rod 21 is the length of the support assembly 2 minus the thickness of the seat body 221 at both ends.

[0038] Further, as shown in the figure, the length a and the width b of the seat body 221 satisfy: a = b (0.05~0.1) *L2, the seat body 221 is welded with the lower box body 1, the length a and the width b of the seat body 221 ensure the length of the welding seam, the length c of the support plate 222 satisfies: a >= c >= 0.5 * a, the height d of the support plate 222 satisfies: a >= d >= 0.5 * a, the chamfer radius r of the support plate 222 is not less than 5mm, and the corner stress concentration is avoided.

[0039] Further, as shown in the figure, the thickness t2 of the support plate 222 satisfies: 3mm >= t1 = t2 >= 2mm, the wall thickness t3 of the first rod 211 and the wall thickness t4 of the second rod 212 satisfy: 1.5mm >= t3 = t4 >= 1mm.

[0040] Further, as shown in the figure, the width k of the reinforcing part 2121 satisfies: k >= 2 * t3, the length j of the reinforcing part 2121 satisfies: j >= 2 * k, the width m of the support rod 21 satisfies: m = a - 2 * t2, and the height n of the support rod 21 satisfies: n = m - 2 * k.

[0041] The battery pack according to the second aspect of the present application comprises the battery pack shell 100 according to the first aspect of the present application.

[0042] The battery pack according to the present application improves the anti-treading performance of the battery pack and the overall structural strength of the battery pack by arranging the battery pack shell 100 according to the first aspect of the present application.

[0043] In the description of the present application, it should be understood that the orientations or positional relationships indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0044] In addition, the terms "first" and "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0045] In the utility model, unless another definite provision and limitation, the term " install " " link " " connect " " fixed " and so on term should do broad sense understanding, for example, can be fixed connection, also can be detachable connection, or be integrated;Can be mechanical connection, also can be electric connection, also can be communication;Can be direct connection, also can pass through intermediate medium indirectly connect, can be two element internal communication or two element's mutual action relationship. For ordinary skilled person in the art, can understand the concrete meaning of above-mentioned term in the utility model according to specific circumstances.

[0046] In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present utility model. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine the different embodiments or examples described in the present specification and the features of the different embodiments or examples without contradiction.

[0047] Although the embodiments of the present utility model have been shown and described, those skilled in the art can understand that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and purposes of the present utility model, and the scope of the present utility model is defined by the claims and their equivalents.

Claims

1. A battery pack housing, characterized in that: include: An upper cover and a lower box body, wherein a receiving cavity is defined between the upper cover and the lower box body; A support assembly, wherein the support assembly is arranged in the accommodating cavity, and the two ends of the support assembly are connected to the lower box body, and are used to support the upper cover in the vertical direction. The support assembly includes: a support rod and a support seat, the two ends of the support rod are respectively connected to one of the support seats, and the support rod and the support seat are interference fit, the support seat includes a seat body and a support plate, the support plate is connected to the seat body, and the seat body is connected to the lower box body, the support plate is bent to define a groove, and the two ends of the support rod are arranged in the groove.

2. The battery pack housing according to claim 1, wherein: The support rod includes a first rod and a second rod, the first rod is sleeved in the second rod, and the second rod is formed with a reinforcement portion extending in a length direction.

3. The battery pack housing according to claim 2, wherein: The length L2 of the support assembly is consistent with the width of the accommodating cavity.

4. The battery pack housing according to claim 3, wherein: The length L1 of the support rod satisfies: L1=L2-2*t1, wherein L2 is the length of the support assembly and t1 is the thickness of the base body.

5. The battery pack housing according to claim 4, wherein: The length a and width b of the seat body satisfy: a=b(0.05~0.1)*L2, and / or the length c of the support plate satisfies: a≥c≥0.5*a, and / or the height d of the support plate satisfies: a≥d≥0.5*a, and / or the chamfer radius r of the support plate is not less than 5mm.

6. The battery pack housing according to claim 5, characterized in that: The thickness t2 of the support plate satisfies: 3mm≥t1=t2≥2mm, and / or the wall thickness t3 of the first rod and the wall thickness t4 of the second rod satisfy: 1.5mm≥t3=t4≥1mm.

7. The battery pack housing according to claim 6, wherein: The width k of the reinforcement portion satisfies: k≥2*t3, and / or the length j of the reinforcement portion satisfies: j≥2*k, and / or the width m of the support rod satisfies: m=a-2*t2, and / or the height n of the support rod satisfies: n=m-2*k.

8. A battery pack, characterized in that: A battery pack casing comprising the battery pack casing according to any one of claims 1 to 7.

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