Box body assembly for battery pack and battery pack

Abstract

The utility model discloses a box body assembly for a battery pack and the battery pack, the box body assembly comprises an integrated box body, an accommodating space is formed in the integrated box body, and the accommodating space is used for placing at least one battery module; the outer wall of the integrated box body is provided with a plurality of grooves, the grooves are sequentially arranged in the circumferential direction of the integrated box body, each groove is at least provided with an inner bottom face, at least one first connecting hole is formed in the inner bottom face, the upper end of the integrated box body is at least provided with an outer edge face, and the outer edge face extends in the circumferential direction of the integrated box body. A plurality of second connecting holes are sequentially formed in the outer edge face in the extending direction. Through the application of the box body assembly of the battery pack, the box body assembly of the battery pack is compact in structure and good in space utilization rate, and the box body assembly can be used as the battery pack formed by a single-layer box body assembly so as to be used for installation at different positions of a whole vehicle; in addition, through cooperation of the bolt structures, the multiple stacked box body assemblies can be conveniently installed so as to meet different electric quantity requirements.

Description

Technical Field

[0001] The utility model relates to the technical field of batteries, and in particular to a box assembly for a battery pack and a battery pack. Background Art

[0002] At present, in response to the needs of the commercial vehicle market, especially the large demands for range and power of large trucks, the existing technology has considered using multiple battery packs in combination to serve as power batteries to provide strong power for large vehicles.

[0003] However, traditional battery packs generally have many disadvantages such as a simple structure, low space utilization, and complex installation, making them difficult to be well applied to the structure of large trucks; especially in the existing technology, when combining and installing multiple battery packs, additional connection structures are often added to the outside of the battery pack, causing it to occupy more space inside the vehicle. Utility Model Content

[0004] In view of this, in order to solve the above problems, the purpose of the present invention is to provide a box assembly for a battery pack, characterized by comprising: an integrated box, wherein a receiving space is formed in the integrated box, and the receiving space is used to place at least one battery module;

[0005] In which, a plurality of grooves are provided on the outer wall of the integrated box body, and the plurality of grooves are arranged in sequence along the circumference of the integrated box body, each of the grooves has at least an inner bottom surface, and at least one first connection hole is provided on the inner bottom surface, and the first connection hole is used for the installation of the bolt structure, and the upper end of the integrated box body has at least one outer edge surface, and the outer edge surface is extended along the circumference of the integrated box body, and the outer edge surface is sequentially provided with a plurality of second connection holes along the extension direction.

[0006] In another preferred embodiment, the integrated box is provided in a rectangular frame structure, and the groove is provided in a horizontally concave configuration relative to the circumferential outer wall of the integrated box.

[0007] In another preferred embodiment, the integrated box body includes at least: an outer wall portion, an inner wall portion and a supporting structure, the accommodating space is formed on the inner side of the inner wall portion, the outer wall portion is arranged around the circumference of the inner wall portion, the supporting structure is connected between the outer wall portion and the inner wall portion, and the groove is formed on the outer side of the inner wall portion.

[0008] In another preferred embodiment, the upper end of the integrated box is open.

[0009] In another preferred embodiment, it further comprises: a reinforcing rib assembly connected to two opposite inner walls of the accommodating space.

[0010] In another preferred embodiment, the reinforcing rib assembly includes: front-end reinforcing ribs, middle reinforcing ribs and rear-end reinforcing ribs, and the front-end reinforcing ribs, the middle reinforcing ribs and the rear-end reinforcing ribs are arranged in sequence along the length direction of the accommodating space.

[0011] In another preferred embodiment, the upper end of the middle reinforcing rib is provided with two protrusions in sequence along the width direction of the accommodating space.

[0012] In another preferred embodiment, a plurality of positioning hole groups are provided on the outer wall of the integrated box, and the positioning hole groups are provided above the first connecting hole.

[0013] The object of the present utility model is to provide a battery pack, comprising at least one box assembly for a battery pack as described in any one of the above items, and further comprising: a box cover, wherein the box cover is arranged on the integrated box body, and a plurality of third connection holes are sequentially arranged on the outer periphery of the box cover, and the third connection holes are arranged opposite to the second connection holes.

[0014] In another preferred embodiment, the battery pack includes at least two box assemblies for the battery pack described in any one of the above items, the two box assemblies are arranged in sequence from top to bottom, and each two adjacent box assemblies are connected by a bolt structure.

[0015] Due to the adoption of the above technical solution, the present invention has the following positive effects compared with the prior art:

[0016] Through the application of the present invention, a box assembly of a battery pack with a compact structure and good space utilization is provided. The battery pack can be used as a single-layer battery pack composed of a single-layer box assembly and a box cover, so as to be installed in different positions of the vehicle. The convenient installation of multiple stacked box assemblies can also be achieved through the cooperation of the bolt structure to take into account different power requirements, especially to meet the power requirements of large trucks. In addition, the cooperation between the groove and the bolt structure further reduces the space occupied in the vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is an overall schematic diagram of a box assembly of a battery pack of the present invention;

[0018] Figure 2 This is a schematic diagram of a first embodiment of a battery pack of the present invention;

[0019] Figure 3 This is a schematic diagram of a second embodiment of a battery pack of the present invention.

[0020] In the attached figure:

[0021] 1. Integrated box; 2. Accommodation space; 3. Battery module; 4. Groove; 5. Inner bottom surface; 6. First connection hole; 7. Outer edge surface; 8. Second connection hole; 9. Outer wall; 10. Inner wall; 11. Support structure; 12. Reinforcement rib assembly; 13. Front end reinforcement rib; 14. Middle reinforcement rib; 15. Rear end reinforcement rib; 16. Protrusion; 17. Positioning hole group; 18. Box cover; 19. Third connection hole; 20. Bolt structure. DETAILED DESCRIPTION

[0022] The following is a clear and complete description of the technical solution of the present invention in conjunction with the accompanying drawings. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0023] In the description of the present invention, it should be understood that the directions or positional relationships indicated by terms such as "upper", "lower", "left", "right", "inside", "outside", "front", "back", "horizontal", and "vertical" are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or component referred to must have a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0024] It should be noted that the terms “horizontal” and “vertical” in the present invention are used to describe a rough positional relationship, rather than a strict “horizontal plane” or “vertical plane”.

[0025] like Figure 1 As shown, a preferred embodiment of a box assembly for a battery pack is shown, comprising: an integrated box 1, a accommodating space 2 is formed in the integrated box 1, and the accommodating space 2 is used to place at least one battery module 3; wherein, a plurality of grooves 4 are provided on the outer wall of the integrated box 1, and the plurality of grooves 4 are arranged in sequence along the circumference of the integrated box 1, and each groove 4 has at least an inner bottom surface 5, and at least one first connection hole 6 is provided on the inner bottom surface 5, and the first connection hole 6 is used for the installation of the bolt structure 20, and the upper end of the integrated box 1 has at least one outer edge surface 7, and the outer edge surface 7 is extended along the circumference of the integrated box 1, and the outer edge surface 7 is sequentially provided with a plurality of second connection holes 8 along the extension direction. Furthermore, the groove 4 is recessed inward relative to the outer wall of the integrated box 1 without occupying external space, and the inner bottom surface 5 of the groove 4 is vertically upward to provide sufficient space for the bolt structure 20 to be positioned and connected with the first connecting hole 6 on the inner bottom surface 5, and the integrated box 1 can be attached to any position in the vehicle through the first connecting hole 6. In particular, multiple integrated boxes 1 can be stacked and installed with the cooperation of the bolt structure 20 through the matching of the first connecting hole 6 and the second connecting hole 8.

[0026] Furthermore, as a preferred embodiment, each first connection hole 6 is directly opposite to a second connection hole 8 , the first connection hole 6 and the second connection hole 8 are both arranged in the vertical direction, and the first connection hole 6 is arranged through the bottom of the integrated box 1 .

[0027] Furthermore, as a preferred embodiment, the bolt structure 20 is preferably a bolt.

[0028] Furthermore, as a preferred embodiment, the bolt structure 20 can be installed in conjunction with a nut, which can be fixedly installed on the outer edge surface 7. The nut is preferably arranged at the above-mentioned second connecting hole 8; the nut can also be regarded as a part required to constitute the second connecting hole 8.

[0029] Furthermore, as a preferred embodiment, the integrated box body 1 is provided in a rectangular frame structure, and the groove 4 is provided in a horizontally concave configuration relative to the circumferential outer wall of the integrated box body 1 .

[0030] Furthermore, as a preferred embodiment, the integrated box 1 includes at least: an outer wall portion 9, an inner wall portion 10, and a support structure 11. An accommodating space 2 is formed on the inner side of the inner wall portion 10. The outer wall portion 9 is arranged around the circumference of the inner wall portion 10. The support structure 11 is connected between the outer wall portion 9 and the inner wall portion 10. The groove 4 is formed on the outer side of the inner wall portion 10. Furthermore, by grooving the space between the outer wall portion 9 and the inner wall portion 10, especially the support structure 11, to form the groove 4, the external space occupied is reduced, and the connection position of the bolt structure 20 is formed without destroying the protective function of the integrated box 1.

[0031] Furthermore, as a preferred embodiment, the support structure 11 is preferably a three-dimensional structure with an X-shaped and / or H-shaped vertical cross-section, so that the support structure 11 can provide sufficient protection for the battery module 3.

[0032] Furthermore, as a preferred embodiment, the upper end of the integrated box 1 is open.

[0033] Furthermore, as a preferred embodiment, it further includes: a reinforcing rib assembly 12 , which is connected to two opposite inner walls of the accommodating space 2 .

[0034] Furthermore, as a preferred embodiment, the reinforcing rib assembly 12 includes: a front reinforcing rib 13, a middle reinforcing rib 14 and a rear reinforcing rib 15, and the front reinforcing rib 13, the middle reinforcing rib 14 and the rear reinforcing rib 15 are arranged in sequence along the length direction of the accommodating space 2.

[0035] Furthermore, as a preferred embodiment, both ends and the bottom of the front reinforcement rib 13 are connected to the inner wall of the accommodating space 2, both ends and the bottom of the middle reinforcement rib 14 are connected to the inner wall of the accommodating space 2, and both ends and the bottom of the rear reinforcement rib 15 are connected to the inner wall of the accommodating space 2.

[0036] Furthermore, as a preferred embodiment, two protrusions 16 are sequentially provided at the upper end of the middle reinforcing rib 14 along the width direction of the accommodating space 2. Furthermore, the upper end surface of the protrusion 16 is flush with the outer edge surface 7, so that the protrusion 16 can provide upward support to the integrated box body 1 or the box cover 18 that may be installed above.

[0037] Furthermore, as a preferred embodiment, a plurality of positioning hole groups 17 are provided on the outer wall of the integrated box body 1, and the positioning hole groups 17 are provided above the first connection hole 6. Furthermore, each positioning hole group 17 includes a plurality of threaded holes, so that when the box body assembly is mounted on the vehicle body, it can be fixed with other connecting components by bolts, that is, one end of the connecting component is fixedly connected to the vehicle body, and the other end of the connecting component is fixed to the positioning hole group 17 by bolts.

[0038] The above description is only a preferred embodiment of the present invention and does not limit the implementation manner and protection scope of the present invention.

[0039] The present invention also has the following implementation methods based on the above:

[0040] like Figure 2 FIG. 1 shows a first preferred embodiment of a battery pack, comprising at least one battery pack case assembly as described above, and further comprising a case cover 18 disposed on the integrated case 1. A plurality of third connection holes 19 are sequentially arranged on the outer periphery of the case cover 18, with the third connection holes 19 being disposed opposite the second connection holes 8. Furthermore, the provision of the case cover 18 seals the upper end of the integrated case 1, forming a complete battery pack structure.

[0041] In a further embodiment of the present invention, each third connection hole 19 matches a second connection hole 8 , and the box cover 18 can be connected to the integrated box body 1 through a corresponding bolt structure 20 .

[0042] In a further embodiment of the present invention, a nut for connecting with a bolt is fixedly provided at each third connecting hole 19 .

[0043] like Figure 3FIG. 2 shows a battery pack according to a second preferred embodiment, further comprising at least two case assemblies for a battery pack as described above, the two case assemblies being arranged sequentially from top to bottom, with each adjacent two case assemblies connected by a bolt structure 20. Furthermore, by connecting the first connection holes 6 and the second connection holes 8 of two adjacent integrated cases 1 with the bolt structure 20, a certain number of case assemblies can be selected for connection based on actual power requirements, thereby forming a multi-layered battery pack.

[0044] In a further embodiment of the present invention, the present invention further comprises: a sealing gasket, which is arranged between two adjacent integrated boxes 1 or between the box cover 18 and the first integrated box 1 thereunder.

[0045] In a further embodiment of the present invention, the integrated box 1 may be integrated with a liquid cooling channel or a liquid heating channel.

[0046] In a further embodiment of the present invention, a plurality of through holes for external connection of electrical components may be provided at both ends of the integrated box 1 along the length direction.

[0047] The above description is only a preferred embodiment of the present invention and does not limit the implementation method and protection scope of the present invention. For those skilled in the art, it should be aware that all solutions obtained by equivalent substitutions and obvious changes made using the description and illustrations of the present invention should be included in the protection scope of the present invention.

Claims

1. A box assembly for a battery pack, characterized in that: include: An integrated box body, wherein a receiving space is formed in the integrated box body, and the receiving space is used to place at least one battery module; In which, a plurality of grooves are provided on the outer wall of the integrated box body, and the plurality of grooves are arranged in sequence along the circumference of the integrated box body, each of the grooves has at least an inner bottom surface, and at least one first connection hole is provided on the inner bottom surface, and the first connection hole is used for the installation of the bolt structure, and the upper end of the integrated box body has at least one outer edge surface, and the outer edge surface is extended along the circumference of the integrated box body, and the outer edge surface is sequentially provided with a plurality of second connection holes along the extension direction.

2. The box assembly for a battery pack according to claim 1, characterized in that: The integrated box body is arranged in a rectangular frame structure, and the groove is arranged to be concave inwardly in a horizontal direction relative to the circumferential outer wall of the integrated box body.

3. The box assembly for a battery pack according to claim 1, characterized in that: The integrated box body includes at least: an outer wall portion, an inner wall portion and a supporting structure, the accommodating space is formed on the inner side of the inner wall portion, the outer wall portion is arranged around the circumference of the inner wall portion, the supporting structure is connected between the outer wall portion and the inner wall portion, and the groove is formed on the outer side of the inner wall portion.

4. The box assembly for a battery pack according to claim 1, characterized in that: The upper end of the integrated box is open.

5. The box assembly for a battery pack according to claim 1, characterized in that: Also includes: A reinforcing rib assembly is connected to two opposite inner walls of the accommodating space.

6. The box assembly for a battery pack according to claim 5, characterized in that: The reinforcing rib assembly includes: a front reinforcing rib, a middle reinforcing rib and a rear reinforcing rib, and the front reinforcing rib, the middle reinforcing rib and the rear reinforcing rib are arranged in sequence along the length direction of the accommodating space.

7. The box assembly for a battery pack according to claim 6, characterized in that: The upper end of the middle reinforcing rib is sequentially provided with two protrusions along the width direction of the accommodating space.

8. The box assembly for a battery pack according to claim 1, characterized in that: A plurality of positioning hole groups are provided on the outer wall of the integrated box, and the positioning hole groups are provided above the first connecting hole.

9. A battery pack, comprising at least one box assembly for a battery pack according to any one of claims 1 to 8, characterized in that: Also includes: The box cover is arranged on the integrated box body, and a plurality of third connection holes are sequentially arranged on the outer periphery of the box cover, and the third connection holes are arranged opposite to the second connection holes.

10. A battery pack comprising at least two box assemblies for battery packs according to any one of claims 1 to 8, characterized in that: The two box assemblies are arranged in sequence from top to bottom, and each two adjacent box assemblies are connected by a bolt structure.

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