Battery box, battery pack and vehicle

Abstract

The utility model provides a kind of battery box, battery pack and vehicle.The utility model discloses a battery box has the receiving cavity of accommodating monomer battery, the battery box includes at least one beam and limiting strip, the beam defines the wall surface of the receiving cavity at least part, the beam includes integrally formed beam body and at least one connecting portion, the limiting strip is connected with the connecting portion.Therefore, the structural strength of the battery box according to the utility model is high.

Description

Technical Field

[0001] This utility model relates to the field of battery technology, specifically to a battery box, a battery pack, and a vehicle. Background Technology

[0002] To improve the driving range of electric vehicles, more space is available inside the battery pack to accommodate the battery cells (individual batteries). This involves eliminating the internal longitudinal beams in the battery box and using steel bracing to fix the crossbeams. This reduces the risk of deformation and cracking of the crossbeams due to the expansion force of the battery cells. In related technologies, fasteners are installed on the crossbeams, connecting the steel bracing to these fasteners. However, this method is time-consuming and labor-intensive. Furthermore, the fasteners may become misaligned or deformed during installation and use, potentially leading to misalignment or deformation of the crossbeams and steel bracing. Such misalignment or deformation can alter the position of the battery cells within the battery pack, potentially causing safety issues. Utility Model Content

[0003] This invention aims to at least partially solve one of the technical problems in the related art. To this end, embodiments of this invention provide a battery box, a battery pack, and a vehicle.

[0004] The battery box of this utility model embodiment has a receiving cavity for accommodating a single battery. The battery box includes at least one beam and a limiting strip. The beam defines at least a portion of the wall of the receiving cavity. The beam includes an integrally formed beam body and at least one connecting portion. The limiting strip is connected to the connecting portion.

[0005] Therefore, the battery box according to the present invention has high structural strength.

[0006] In some embodiments, the beam body and the connecting portion are integrally die-cast.

[0007] In some embodiments, the beam includes a plurality of the connecting portions, which are spaced apart along the length of the beam.

[0008] In some embodiments, the connecting portion has a connecting hole extending through it along the height direction of the beam, the limiting strip has a limiting hole, the limiting strip and the connecting portion are connected by a connector passing through the limiting hole and the connecting hole, the length direction of the beam intersects with the expansion direction of the individual battery in the battery box, and the beam is located on at least one side of the receiving cavity in the expansion direction of the individual battery.

[0009] In some embodiments, a threaded sleeve is provided in the connecting hole of the connecting part, and the connecting member is threadedly connected to the threaded sleeve.

[0010] In some embodiments, the dimension of the connecting portion in the width direction of the beam is greater than or equal to 16 mm; and / or

[0011] The dimension of the connecting part in the height direction of the beam is greater than or equal to 12mm.

[0012] In some embodiments, the beam body is a hollow structure.

[0013] In some embodiments, the connection is located within a cavity in the beam body and extends along the height direction of the beam.

[0014] In some embodiments, the beam body has a beam opening on one side of the beam in the height direction that communicates with a cavity in the beam body, and the connecting portion extends out of the beam opening.

[0015] In some embodiments, the thickness direction of the limiting strip is consistent with the height direction of the beam, both surfaces of the limiting strip in the height direction of the beam are planes, and the end of the limiting strip is connected to the end of the corresponding connecting portion that extends out of the beam opening.

[0016] In some embodiments, the beam body includes a first side plate and a second side plate opposite to each other in the width direction of the beam, the thickness direction of the first side plate and the thickness direction of the second side plate are both in the width direction of the beam, and any two of the length direction, the width direction and the height direction of the beam are perpendicular to each other.

[0017] The connecting part is connected to the first side plate at the first end in the width direction of the beam, and the connecting part is connected to the second side plate at the second end in the width direction of the beam through a reinforcing rib. The first side plate, the connecting part, the reinforcing rib and the second side plate are integrally formed.

[0018] In some embodiments, there are multiple limiting strips, and the multiple limiting strips are spaced apart along the length direction of the beam.

[0019] In some embodiments, there are multiple beams, and the multiple beams are located on both sides of the receiving cavity in the direction of expansion of the individual battery in the battery box, and the length direction of the beams is perpendicular to the direction of expansion of the individual battery in the battery box.

[0020] In some embodiments, the battery box further includes a box panel, the thickness direction of which is consistent with the height direction of the beam, the box panel and the beam defining a receiving cavity for accommodating a single battery cell, and the box panel and the limiting strip are respectively located on both sides of the height direction of the beam.

[0021] This utility model also proposes a battery pack, comprising:

[0022] A battery box, wherein the battery box is the aforementioned battery box;

[0023] A battery module, comprising at least one individual battery, wherein the battery module is disposed within the receiving cavity of the battery box, and the beam of the battery box is located on at least one side of the receiving cavity in the expansion direction of the individual battery, and the length direction of the beam intersects with the expansion direction of the individual battery.

[0024] This utility model also proposes a vehicle that includes the aforementioned battery pack. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of a battery box and battery pack according to an embodiment of the present utility model.

[0026] Figure 2 yes Figure 1 A magnified view of a portion of the image.

[0027] Figure 3 This is a schematic diagram of the beam body and the connecting part according to an embodiment of the present utility model.

[0028] Figure 4 This is a sectional view of the beam body and the connecting part according to an embodiment of the present utility model.

[0029] Figure 5 yes Figure 4 A magnified view of a portion of the image.

[0030] Figure label:

[0031] 1. Battery box;

[0032] 2. Box panels;

[0033] 3. First beam;

[0034] 4. Second beam;

[0035] 5. Beam body; 51. First side plate; 52. Second side plate; 53. Reinforcing ribs;

[0036] 6. Connecting part; 61. Connecting hole; 62. Threaded sleeve; 63. Connecting piece;

[0037] 7. Limiting strip; 71. Limiting hole;

[0038] 8. Side panels;

[0039] 9. Battery module. Detailed Implementation

[0040] The embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0041] The battery box 1 of this utility model is described below with reference to the accompanying drawings. The battery box 1 has a receiving cavity for accommodating a single battery cell. Figures 1 to 5 As shown, the battery box according to an embodiment of the present invention includes at least one beam and a limiting strip 7, the beam defining at least a portion of the wall of the receiving cavity.

[0042] The beam includes an integrally formed beam body 5 and at least one connecting portion 6, with a limiting strip 7 connected to the connecting portion 6. Specifically, the connecting portion 6 is a fixed structure connected to the limiting strip 7, and at least one connecting portion 6 can be connected to the end of at least one limiting strip 7. The at least one connecting portion 6 is integrally formed with the beam body 5, thereby stabilizing the structure of the beam and the connecting portion 6, making the connection between the connecting portion 6 and the limiting strip 7 more stable, and thus ensuring the stability of the limiting strip 7 when connected to the beam body 5 via the connecting portion 6. Furthermore, the limiting strip 7 can restrict beam deformation, reducing the risk of beam deformation and cracking, thereby improving the structural strength of the battery box 1 according to this embodiment of the present invention. For example, the beam can be integrally formed by casting, plastic forming, or additive manufacturing.

[0043] Therefore, the battery box according to the present invention has high structural strength.

[0044] like Figure 1 As shown, in some embodiments, the battery box 1 further includes a box plate 2, the thickness direction of which is consistent with the height direction of the beam. The box plate 2 and the beam define a receiving cavity for accommodating a single battery cell. The box plate 2 and the limiting strip 7 are located on opposite sides of the beam in the height direction. Specifically, the box plate 2 is connected to one side of the beam in the height direction, and the box plate 2 and the beam define a receiving cavity to accommodate a single battery cell. For example, the box plate 2 is located at the bottom of the beam to support the single battery cell, and the limiting strip 7 is located at the top of the beam. Alternatively, the limiting strip 7 is located at the bottom of the beam, and the box plate 2 is located at the top of the beam.

[0045] In some embodiments, the width direction of the box plate 2 is consistent with the length direction of the beam, and the length direction of the box plate 2 is consistent with the width direction of the beam. Any two of the beam's length direction, width direction, and height direction are perpendicular to each other. For example, the beam's length direction is the left-right direction, its width direction is the front-back direction, its height direction is the up-down direction, the box plate 2's length direction is the front-back direction, the single battery's expansion direction is the front-back direction, the receiving cavity has beams on both sides in the front-back direction, and the limiting strip 7 is connected to the connecting portion 6 on the two beams at both ends in the front-back direction. The left-right, front-back, and up-down directions are as follows... Figure 1 As shown by the arrow in the image.

[0046] In some embodiments, the longitudinal direction of the beam intersects the expansion direction of the individual battery cells within the battery box 1, and the beam is located on at least one side of the receiving cavity in the expansion direction of the individual battery cells. This allows the beam to limit the movement of the individual battery cells in the expansion direction. For example, the beam may be located on at least one side of the receiving cavity in the longitudinal direction.

[0047] like Figure 1 As shown, in some embodiments, there are multiple beams, located on both sides of the receiving cavity in the expansion direction of the individual batteries within the battery box 1. The length direction of the beams is perpendicular to the expansion direction of the individual batteries within the battery box 1. That is, the width direction of the beams is consistent with the expansion direction of the individual batteries. In the width direction of the beams, beams are provided on both sides of the individual batteries (within the battery box 1) to limit their movement. For example, beams are provided on both the front and rear sides of the individual batteries (within the battery box 1).

[0048] For example, the multiple beams include a first beam 3 and a second beam 4, both extending in the left-right direction. The battery box 1 also includes two side panels 8, with the first beam 3 and the second beam 4 positioned on either side of the top of the box panel 2 in the front-rear direction. The side panels 8 extend in the front-rear direction, and are positioned on either side of the top of the box panel 2 in the left-right direction. The two ends of the two side panels 8 are connected to the first beam 3 and the second beam 4, respectively. The box panel 2, the two side panels 8, the first beam 3, and the second beam 4 define a cavity for accommodating multiple individual batteries. A limiting strip 7 is located above the first beam 3 and the second beam 4 and is connected to the connecting portion 6 on the first beam 3 and the second beam 4.

[0049] like Figure 1 As shown, in some embodiments, there are multiple limiting strips 7, which are spaced apart along the length of the beam. All limiting strips 7 are connected to the beam, thereby further improving the structural strength of the battery box 1. For example, the length direction of the limiting strips 7 is the front-to-back direction, and multiple limiting strips 7 are spaced apart along the left-to-right direction. Both the front and rear ends of the limiting strips 7 are connected to the connecting portion 6 of the beam, and the limiting strips 7 are bonded to the shoulder of the individual battery cells.

[0050] In some embodiments, the beam body 5 and the connecting portion 6 are integrally die-cast. Specifically, the beam is a metal part directly die-cast by injecting molten metal (e.g., aluminum alloy) into a mold. The beam body 5 and the connecting portion 6 produced by integral die-casting have a stable structure.

[0051] As shown in some embodiments, the beam includes multiple connecting portions 6, which are spaced apart along the length of the beam. These connecting portions 6 can be connected to multiple limiting strips 7 to further prevent beam deformation and improve the structural strength of the battery box 1. For example, the multiple connecting portions 6 are spaced apart in the left-right direction.

[0052] like Figure 4 and Figure 5 As shown, in some embodiments, the connecting portion 6 has a connecting hole 61 extending through it along the height direction of the beam, and the limiting strip 7 has a limiting hole 71. The limiting strip 7 and the connecting portion 6 are connected by a connector 63 passing through the limiting hole 71 and the connecting hole 61. Specifically, the connecting portion 6 is a solid structure, and the connecting hole 61 is provided on the connecting portion 6 to facilitate the accommodation of the connector 63 so that the limiting strip 7 and the connecting portion 6 can be connected by the connector 63. For example, the connecting hole 61 extends through the connecting portion 6 in the vertical direction.

[0053] like Figure 4 and Figure 5 As shown, in some embodiments, the connecting part 6 has a connecting hole 61 that extends through it in the vertical direction, the limiting strip 7 has a limiting hole 71, and the limiting strip 7 and the connecting part 6 are connected by a connector 63 that passes through the limiting hole 71 and the connecting hole 61, thereby facilitating the connection between the limiting strip 7 and the connecting part 6.

[0054] A threaded sleeve 62 is provided in the connecting hole 61 of the connecting part 6, and the connecting member 63 is threadedly connected to the threaded sleeve 62. The threaded sleeve 62 facilitates a fixed connection with the connecting member 63. For example, the connecting member 63 is an M5*1.5D bolt.

[0055] In some embodiments, preferably, the dimension of the connecting portion 6 in the width direction of the beam is greater than or equal to 16 mm. Preferably, the dimension of the connecting portion 6 in the height direction of the beam is greater than or equal to 12 mm. This allows the connecting portion 6 to have sufficient height, thickness, and structural strength to accommodate the connector 63. For example, the dimension of the connecting portion 6 in the front-to-back direction is 20 mm, and the dimension of the connecting portion 6 in the vertical direction is 15 mm.

[0056] In some embodiments, the beam body 5 is a hollow structure, thereby reducing the weight of the beam body 5.

[0057] In some embodiments, the connecting portion 6 is located within a cavity in the beam body 5 and extends along the height direction of the beam, thereby facilitating the opening of the connecting hole 61. For example, the connecting portion 6 is a polygonal prism structure extending in the vertical direction.

[0058] In some embodiments, the beam body 5 has a beam opening on one side in the height direction that communicates with the cavity of the beam body 5, and the connecting portion 6 extends out of the beam opening. This allows the height of the connecting portion 6 to be adapted to the position of the limiting strip 7, so that the end of the connecting portion 6 can directly contact the limiting strip 7.

[0059] In some embodiments, the thickness direction of the limiting strip 7 is consistent with the height direction of the beam, both surfaces of the limiting strip 7 in the height direction of the beam are planes, and the end of the limiting strip 7 is connected to the end of the corresponding connecting part 6 that extends out of the beam opening. This allows the end of the limiting strip 7 and the end of the corresponding connecting part 6 to be directly connected via the connector 63, thereby reducing assembly difficulty. For example, the lower surface of the limiting strip 7 is coplanar and is connected to the upper end of the corresponding connecting part 6.

[0060] like Figure 3 As shown, in some embodiments, the beam body 5 includes a first side plate 51 and a second side plate 52 opposite each other in the beam's width direction. The thickness directions of the first side plate 51 and the second side plate 52 are both in the beam's width direction. A connecting portion 6 is connected to the first side plate 51 at a first end in the beam's width direction, and to the second side plate 52 at a second end in the beam's width direction via a reinforcing rib 53. The first side plate 51, the connecting portion 6, the reinforcing rib 53, and the second side plate 52 are integrally formed.

[0061] Specifically, the first side plate 51, the connecting portion 6, the reinforcing rib 53, and the second side plate 52 are sequentially connected in the width direction of the beam, thereby improving the structural strength of the beam. For example, the beam body 5 includes a first side plate 51 and a second side plate 52 opposite each other in the front-rear direction, with the thickness directions of the first side plate 51 and the second side plate 52 both in the front-rear direction. The connecting portion 6 is connected to the first side plate 51 at a first end in the front-rear direction, and to the second side plate 52 at a second end in the front-rear direction via the reinforcing rib 53. The first side plate 51 defines the wall of the receiving cavity, and at least a portion of the dimension of the connecting portion 6 in the first direction (left-right direction) decreases in the second direction (front-rear direction) away from the first side plate 51. For example, the outer surface of the first side plate 51 defines the wall of the receiving cavity.

[0062] like Figure 3 As shown, in some embodiments, the second side plate 52 has a concave-convex reinforcing structure, which can further improve the structural strength of the beam.

[0063] like Figure 1 As shown, this utility model also proposes a battery pack. According to an embodiment of this utility model, the battery pack includes a battery box and a battery module 9. The battery box is a battery box 1 according to an embodiment of this utility model. The battery module 9 includes at least one individual battery cell and is disposed within the receiving cavity of the battery box 1. A beam of the battery box 1 is located on at least one side of the receiving cavity in the expansion direction of the individual battery cell, and the length direction of the beam intersects with the expansion direction of the individual battery cell. Specifically, the battery module 9 includes multiple individual batteries and is disposed within the receiving cavity. Therefore, the battery box according to an embodiment of this utility model has high structural strength, thereby improving the safety of the battery pack according to an embodiment of this utility model.

[0064] The present invention also proposes a vehicle, wherein the vehicle according to an embodiment of the present invention includes a battery pack according to an embodiment of the present invention, thereby enabling the vehicle according to an embodiment of the present invention to have high safety.

[0065] In the description of this utility model, it should be understood that 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", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0066] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0067] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0068] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0069] In this utility model, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0070] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A battery box, the battery box having a receiving cavity for accommodating a single battery cell, characterized in that, include: At least one beam and a limiting strip, the beam defining at least a portion of the wall of the receiving cavity, the beam comprising an integrally formed beam body and at least one connecting portion, the limiting strip being connected to the connecting portion.

2. The battery box according to claim 1, characterized in that, The beam body and the connecting part are integrally die-cast.

3. The battery box according to claim 1, characterized in that, The beam includes a plurality of connecting portions, which are spaced apart along the length of the beam.

4. The battery box according to claim 3, characterized in that, The connecting part has a connecting hole that passes through it along the height direction of the beam, the limiting strip has a limiting hole, the limiting strip and the connecting part are connected by a connector that passes through the limiting hole and the connecting hole, the length direction of the beam intersects with the expansion direction of the individual battery in the battery box, and the beam is located on at least one side of the receiving cavity in the expansion direction of the individual battery.

5. The battery box according to claim 4, characterized in that, The connecting hole of the connecting part is provided with a threaded sleeve, and the connecting member is threadedly connected to the threaded sleeve.

6. The battery box according to claim 5, characterized in that, The dimension of the connecting part in the width direction of the beam is greater than or equal to 16 mm; and / or The dimension of the connecting part in the height direction of the beam is greater than or equal to 12mm.

7. The battery box according to any one of claims 1-6, characterized in that, The beam body is a hollow structure.

8. The battery box according to claim 7, characterized in that, The connecting portion is located within a cavity in the beam body and extends along the height direction of the beam.

9. The battery box according to claim 8, characterized in that, The beam body has a beam opening on one side of the beam in the height direction that communicates with the cavity of the beam body, and the connecting part extends out of the beam opening.

10. The battery box according to claim 9, characterized in that, The thickness direction of the limiting strip is consistent with the height direction of the beam. Both surfaces of the limiting strip in the height direction of the beam are planes. The end of the limiting strip is connected to the end of the corresponding connecting part that extends out of the beam opening.

11. The battery box according to claim 9, characterized in that, The beam body includes a first side plate and a second side plate opposite to each other in the width direction of the beam. The thickness direction of the first side plate and the thickness direction of the second side plate are both in the width direction of the beam. Any two of the length direction, the width direction and the height direction of the beam are perpendicular to each other. The connecting part is connected to the first side plate at the first end in the width direction of the beam, and the connecting part is connected to the second side plate at the second end in the width direction of the beam through a reinforcing rib. The first side plate, the connecting part, the reinforcing rib and the second side plate are integrally formed.

12. The battery box according to claim 3, characterized in that, There are multiple limiting strips, and the multiple limiting strips are spaced apart along the length direction of the beam.

13. The battery box according to claim 3, characterized in that, There are multiple beams, and the multiple beams are located on both sides of the receiving cavity in the direction of expansion of the individual batteries in the battery box. The length direction of the beams is perpendicular to the expansion direction of the individual batteries in the battery box.

14. The battery box according to claim 1, characterized in that, The battery box also includes a box panel, the thickness direction of which is consistent with the height direction of the beam. The box panel and the beam define a cavity for accommodating a single battery cell. The box panel and the limiting strip are located on both sides of the height direction of the beam.

15. A battery pack, characterized in that, include: A battery box, wherein the battery box is the battery box as described in any one of claims 1-14; A battery module, comprising at least one individual battery, wherein the battery module is disposed within the receiving cavity of the battery box, and the beam of the battery box is located on at least one side of the receiving cavity in the expansion direction of the individual battery, and the length direction of the beam intersects with the expansion direction of the individual battery.

16. A vehicle, characterized in that, Includes the battery pack as described in claim 15.

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