Battery pack shell and battery pack

Abstract

The utility model relates to the technical field of battery packs, and discloses a battery pack shell and a battery pack. The battery pack shell comprises a lower shell, a cold plate, a plurality of adapter brackets and a plurality of cross beams, the lower shell comprises a frame and a bottom plate arranged in the frame; the cold plate is connected with a bottom plate of the lower shell; the cross beams are arranged above the cold plate, the two ends of each cross beam are connected with the two opposite side walls of the lower shell through the adapter brackets respectively, and the cold plate is clamped and fixed between the cross beams and the bottom plate through the cross beams and the bottom plate. According to the battery pack shell provided by the utility model, the lower shell is provided with the bottom plate which can play a role in protecting the cold plate and effectively prevent the cold plate from being damaged due to collision, and meanwhile, the cold plate is clamped and fixed between the cross beam and the bottom plate by the cross beam and the bottom plate, so that the stability of the cold plate is ensured. Due to the arrangement of the adapter bracket, the two ends of the cross beam are connected with the two opposite side walls of the lower shell through the adapter bracket, so that the assembly of the cold plate and the cross beam is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of battery packs, and in particular to a battery pack shell and a battery pack. Background Art

[0002] The battery pack shell in the current related technology includes a frame structure without a bottom plate, a plurality of beams are welded in the frame structure, and the cold plate is installed in the frame from the side without the beams and fixedly connected to the frame.

[0003] In such a structure, the cold plate is directly exposed to the outside without a protective structure, which makes the cold plate of the battery pack easily bumped or damaged, thereby affecting the cooling effect of the battery pack.

[0004] Therefore, as a solution, a bottom plate is arranged on the frame, but at the same time, since both ends of the beam are connected to the frame by welding, it will be disadvantageous for assembling the cold plate. Utility Model Content

[0005] In view of this, the utility model provides a battery pack housing and a battery pack to solve the problem that the cold plate has no protection and is not conducive to assembly.

[0006] In the first aspect, the utility model provides a battery pack shell, including a lower shell, a cold plate, a plurality of adapter brackets and a plurality of cross beams. The lower shell includes a frame and a bottom plate arranged in the frame; the cold plate is connected to the bottom plate of the lower shell; the cross beams are arranged above the cold plate, and the two ends of each cross beam are respectively connected to the opposite side walls of the lower shell through the adapter brackets, and the cross beams and the bottom plate clamp and fix the cold plate between the two.

[0007] Beneficial effects: The battery pack shell provided by the utility model has a bottom plate provided on the lower shell, which can protect the cold plate and effectively prevent the cold plate from being damaged by bumps. At the same time, the crossbeam and the bottom plate clamp and fix the cold plate between the two to ensure the stability of the cold plate. Due to the provision of the adapter bracket, the two ends of the crossbeam are connected through the adapter bracket and the two opposite side walls of the lower shell, which facilitates the assembly of the cold plate and the crossbeam.

[0008] In an optional embodiment, the lower shell further includes a side panel disposed on the inner surface of the frame, the side panel is a bent structure having a plurality of protrusions and / or grooves, and the adapter bracket is connected to the side panel.

[0009] In an optional embodiment, the adapter bracket includes a first connecting portion and a second connecting portion, the first connecting portion is connected to the frame, and the second connecting portion is connected to the end of the beam.

[0010] In an optional embodiment, the first connection part is a plate-like structure, the first connection part is provided with a first connection hole, the frame is provided with a second connection hole adapted to the first connection hole, and the first connection hole and the second connection hole are connected by a first fastener.

[0011] In an optional embodiment, the end of the crossbeam has a mounting groove, the second connecting portion is a block structure protruding from the first connecting portion, the second connecting portion is adapted to the mounting groove, and the end of the crossbeam is plugged into the second connecting portion.

[0012] In an optional embodiment, the second connecting portion is provided with a third connecting hole, the crossbeam is provided with a fourth connecting hole matching the third connecting hole, and the third connecting hole and the fourth connecting hole are connected by a second fastener.

[0013] In an optional embodiment, along the protruding direction of the second connecting portion, the cross-sectional size of the second connecting portion gradually decreases to form a guiding structure.

[0014] In an optional implementation, the adapter bracket is an integrally formed structure.

[0015] In an optional embodiment, the lower shell includes dedicated mounting holes located at the periphery of the base plate and a common mounting hole located in the middle of the base plate. The four sides of the cold plate are connected to the dedicated mounting holes through third fasteners, and the middle of the cold plate and the middle of the cross beam are connected to the common mounting holes through fourth fasteners. The fourth fastener passes through the cross beam and the cold plate to connect to the base plate.

[0016] In a second aspect, the utility model further provides a battery pack, comprising a battery pack shell of any one of the above technical solutions.

[0017] Beneficial effect: Because the battery pack includes a battery pack shell, it has the same effect as the battery pack shell and will not be described in detail here. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 This is a schematic structural diagram of a battery pack housing according to an embodiment of the utility model;

[0020] Figure 2 for Figure 1 An exploded view of the battery pack housing is shown;

[0021] Figure 3 It is a partial enlarged view of the crossbeam and the adapter bracket;

[0022] Figure 4 for Figure 1 A partial enlarged view of the battery pack housing shown;

[0023] Figure 5 A top view of the lower shell of the battery pack shell;

[0024] Figure 6 for Figure 1 Sectional view along AA;

[0025] Figure 7 for Figure 6 A partial enlarged view of point B in the middle.

[0026] Description of reference numerals:

[0027] 1. Lower shell; 11. Frame; 12. Bottom plate; 121. Special mounting hole; 122. Public mounting hole; 13. Side plate; 2. Cold plate; 3. Adapter bracket; 31. First connecting part; 311. First connecting hole; 32. Second connecting part; 321. Third connecting hole; 4. Crossbeam; 41. Fourth connecting hole; 42. Sixth connecting hole; 5. Fourth fastener. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the utility model.

[0029] Combine the following Figures 1 to 7 , describing an embodiment of the utility model.

[0030] According to an embodiment of the utility model, on the one hand, a battery pack housing is provided, comprising a lower housing 1, a cold plate 2, a plurality of adapter brackets 3 and a plurality of cross beams 4. The lower housing 1 comprises a frame 11 and a bottom plate 12 disposed in the frame 11; the cold plate 2 is connected to the bottom plate 12 of the lower housing 1; the cross beams 4 are disposed above the cold plate 2, and the two ends of each cross beam 4 are respectively connected to the opposite side walls of the lower housing 1 through the adapter brackets 3, and the cross beams 4 and the bottom plate 12 clamp and fix the cold plate 2 therebetween.

[0031] The battery pack housing provided by the embodiment of the utility model, wherein the lower housing 1 is provided with a bottom plate 12, which can protect the cold plate 2 and effectively prevent the cold plate 2 from being damaged by bumps, and at the same time, the cross beam 4 and the bottom plate 12 clamp and fix the cold plate 2 therebetween to ensure the stability of the cold plate 2. Due to the provision of the adapter bracket 3, the two ends of the cross beam 4 are connected through the adapter bracket 3 and the two opposite side walls of the lower housing 1, which facilitates the assembly of the cold plate 2 and the cross beam 4.

[0032] In some embodiments, the adapter bracket 3 includes a first connection portion 31 and a second connection portion 32 , the first connection portion 31 is connected to the frame 11 , and the second connection portion 32 is connected to an end of the beam 4 .

[0033] The adapter bracket 3 is provided with two parts, namely, a first connection part 31 and a second connection part 32 . The first connection part 31 is convenient for connecting the adapter bracket 3 to the frame 11 , and the second connection part 32 is convenient for connecting to the cross beam 4 , thereby facilitating the adapter connection between the cross beam 4 and the lower shell 1 .

[0034] The structures of the first connection part 31 and the second connection part 32 are not limited, and can be a snap-fit ​​structure, a plug-in structure, or a plurality of other structures. Figure 3 In the illustrated embodiment, a fastener connection structure may be adopted as long as it can play a role of transition connection between the cross beam 4 and the frame 11 of the lower shell 1.

[0035] Specifically, in some embodiments, the first connection portion 31 is a plate-like structure, the first connection portion 31 is provided with a first connection hole 311, the frame 11 is provided with a second connection hole adapted to the first connection hole 311, and the first connection hole 311 and the second connection hole are connected by a first fastener.

[0036] By setting the first connecting portion 31 as a plate-like structure, it is easy to connect to the frame 11 of the lower shell 1, and it is also easy to process, save materials, and reduce manufacturing costs. The frame 11 and the first connecting portion 31 are connected by a first fastener, which is easy to disassemble and maintain.

[0037] In some embodiments, the end of the crossbeam 4 has a mounting groove, the second connecting portion 32 is a block structure protruding from the first connecting portion 31 , the second connecting portion 32 is adapted to the mounting groove, and the end of the crossbeam 4 is plugged into the second connecting portion 32 .

[0038] The second connecting portion 32 is a block-shaped structure, and is adapted to the assembly groove of the crossbeam 4 , and can be plug-connected with the crossbeam 4 .

[0039] Furthermore, the assembly groove of the beam 4 has at least one anti-rotation edge, and the structure of the second connecting portion 32 is adapted thereto. Thus, after the beam 4 and the second connecting portion 32 of the adapter bracket 3 are plugged in, the beam 4 can be prevented from circumferential rotation, thereby limiting the beam 4.

[0040] In some embodiments, the cross beam 4 is a hollow rectangular steel, so that the battery pack can be lightweight and the weight and cost can be reduced. The cavity of the cross beam 4 constitutes the above-mentioned assembly groove, and the second connecting portion 32 is adapted to the cavity structure of the cross beam 4, and the two are plugged.

[0041] In some embodiments, the second connection portion 32 is provided with a third connection hole 321 , the cross beam 4 is provided with a fourth connection hole 41 matching the third connection hole 321 , and the third connection hole 321 and the fourth connection hole 41 are connected by a second fastener.

[0042] By providing the third connection hole 321 on the second connection portion 32 of the adapter bracket 3, a fixing point can be provided for the installation of the cross beam 4. The second connection portion 32 and the cross beam 4 are connected by a second fastener, and the adapter bracket 3 and the cross beam 4 can be fastened and connected, thereby ensuring that the cross beam 4 and the lower shell 1 are firmly connected, so that the cross beam 4 plays a role in firmly and reliably supporting and clamping and fixing the cold plate 2.

[0043] In some embodiments, along the protruding direction of the second connection portion 32 , the cross-sectional size of the second connection portion 32 gradually decreases to form a guiding structure.

[0044] Since the second connecting portion 32 has a guiding structure, it is convenient to guide the insertion of the end of the cross beam 4 and the second connecting portion 32 , which is beneficial to improving the assembly efficiency of the battery pack shell.

[0045] In some embodiments, the lower shell 1 further includes a side panel 13 disposed on the inner surface of the frame 11 . The side panel 13 is a bent structure having a plurality of protrusions and / or grooves. The adapter bracket 3 is connected to the side panel 13 .

[0046] In such Figure 4 In the illustrated embodiment, the side plate 13 is “W”-shaped, the second connection hole is provided on a protrusion of the side plate 13 , and the first connection portion 31 of the adapter bracket 3 is connected to the protrusion of the side plate 13 .

[0047] The shape of the protrusion or depression of the side plate 13 is not limited, for example, it can also be two "U" shapes.

[0048] By setting the side panel 13 as a bending structure including a plurality of protrusions and / or grooves, the load on the adapter bracket 3 can be evenly distributed to the hanging points outside the lower shell 1; at the same time, the bending structure can resist the collision of the side column, reduce the deformation inside the package, and play an effective protective role for the battery pack.

[0049] In some embodiments, the side panels 13 are formed by sheet metal stamping.

[0050] In some embodiments, the adapter bracket 3 is an integrally formed structure.

[0051] This facilitates the processing of the adapter bracket 3 and reduces the manufacturing difficulty and manufacturing cost.

[0052] In some embodiments, the lower shell 1 includes dedicated mounting holes 121 located around the base plate 12 and a common mounting hole 122 located in the middle of the base plate 12. The four sides of the cold plate 2 are connected to the dedicated mounting holes 121 through third fasteners, and the middle of the cold plate 2 and the middle of the cross beam 4 are connected to the common mounting holes 122 through fourth fasteners 5. The fourth fastener 5 penetrates the cross beam 4 and connects the cold plate 2 to the base plate 12 of the lower shell 1.

[0053] In this configuration, the cold plate 2 is connected to the bottom plate 12 of the lower shell 1 at all sides, and is connected to the cross beam 4 and the bottom plate 12 at the middle, which can ensure the stable connection between the cold plate 2 and the lower shell 1. The two ends of the cross beam 4 are connected to the frame 11 of the lower shell 1 through the second fastener, and the middle of the cross beam 4 is connected to the cold plate 2 and the bottom plate 12 through the fourth fastener 5, which can ensure the stable connection of the cross beam 4. In this way, the cold plate 2 can be clamped and fastened between the lower shell 1 and the cross beam 4.

[0054] Specifically, the cold plate 2 is provided with fifth connection holes corresponding to the dedicated mounting holes 121 around its periphery, and the third fasteners fasten the fifth connection holes of the cold plate 2 and the dedicated mounting holes 121 of the bottom plate 12 together.

[0055] The middle of the cold plate 2 and the middle of the cross beam 4 are both provided with a sixth connection hole 42 adapted to the common mounting hole 122 , and the fourth fastener 5 fastens the sixth connection hole 42 of the cold plate 2 , the sixth connection hole 42 of the cross beam 4 and the common mounting hole 122 of the bottom plate 12 .

[0056] According to an embodiment of the present utility model, on the other hand, a battery pack is provided, comprising a battery pack shell according to any one of the above technical solutions.

[0057] During installation, the cold plate 2 is placed in the frame 11 of the lower shell 1, and the cold plate 2 and the dedicated mounting holes 121 around the bottom plate 12 are fastened and connected by a plurality of third fasteners. Then, the two ends of the crossbeam 4 are connected to the adapter bracket 3 by the second fastener, so as to realize the integrated installation of the crossbeam 4 and the adapter bracket 3. The crossbeam 4 and the adapter bracket 3 are connected as a whole, and then the whole is fastened and connected to the side plate 13 on the inner side of the frame 11 of the lower shell 1 by the first fastener. Finally, the fourth fastener 5 is used to pass through the crossbeam 4 and the cold plate 2, and fastened to the common mounting hole 122 of the bottom plate 12, so that the cold plate 2 is clamped between the lower shell 1 and the crossbeam 4.

[0058] Because the battery pack includes a battery pack shell, it has the same effect as the battery pack shell and is not described in detail here.

[0059] Although the embodiments of the present invention are described in conjunction with the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations are all within the scope defined by the appended claims.

Claims

1. A battery pack housing, characterized in that: include: A lower shell, the lower shell comprising a frame and a bottom plate arranged in the frame; A cold plate connected to the bottom plate of the lower shell; Multiple adapter brackets; A plurality of cross beams are arranged above the cold plate, two ends of each of the cross beams are respectively connected to the opposite side walls of the lower shell through the adapter bracket, and the cross beams and the bottom plate clamp and fix the cold plate therebetween.

2. The battery pack housing according to claim 1, characterized in that: The lower shell further comprises a side plate arranged on the inner surface of the frame, the side plate is a bending structure having a plurality of protrusions and / or grooves, and the adapter bracket is connected to the side plate.

3. The battery pack housing according to claim 1 or 2, characterized in that: The adapter bracket includes a first connecting portion and a second connecting portion, the first connecting portion is connected to the frame, and the second connecting portion is connected to an end of the beam.

4. The battery pack housing according to claim 3, characterized in that: The first connection part is a plate-like structure, a first connection hole is formed in the first connection part, a second connection hole is formed in the frame to match the first connection hole, and the first connection hole and the second connection hole are connected by a first fastener.

5. The battery pack housing according to claim 4, characterized in that: The end of the crossbeam is provided with a mounting groove, the second connecting portion is a block structure protruding from the first connecting portion, the second connecting portion is adapted to the mounting groove, and the end of the crossbeam is plugged into the second connecting portion.

6. The battery pack housing according to claim 5, characterized in that: The second connecting portion is provided with a third connecting hole, the crossbeam is provided with a fourth connecting hole matching with the third connecting hole, and the third connecting hole and the fourth connecting hole are connected by a second fastener.

7. The battery pack housing according to claim 5, characterized in that: Along the protruding direction of the second connecting portion, the cross-sectional size of the second connecting portion gradually decreases to form a guiding structure.

8. The battery pack housing according to claim 1 or 2, characterized in that: The adapter bracket is an integrated structure.

9. The battery pack housing according to claim 1 or 2, characterized in that: The lower shell includes dedicated mounting holes located at the periphery of the base plate and a common mounting hole located in the middle of the base plate. The four sides of the cold plate are connected to the dedicated mounting holes through third fasteners, and the middle of the cold plate and the middle of the cross beam are connected to the common mounting holes through fourth fasteners. The fourth fastener passes through the cross beam and connects the cold plate to the base plate.

10. A battery pack, characterized in that: A battery pack casing comprising the battery pack casing according to any one of claims 1 to 9.

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