Battery module bearing frame and battery pack

Abstract

The utility model discloses a battery module bearing frame and a battery pack, and relates to the technical field of batteries, the battery module bearing frame is mounted in a battery pack box body, the battery module bearing frame comprises a frame body, a first connecting piece and a second connecting piece, a plurality of connecting holes are formed in the upper surface of the frame body, and the first connecting piece is arranged on the outer edge of the upper end of the frame body; a second connecting piece is arranged on the inner wall of the lower end of the frame body. The framework body is matched with the outer framework and the inner framework, so that the framework has relatively high rigidity, can bear and restrain a relatively heavy battery module and realizes effective fixation of the battery module, and the first connecting piece and the second connecting piece on the framework body are connected with the battery pack box body through spot welding; and the frame body can be conveniently mounted in the battery pack box body.

Description

Technical Field

[0001] The utility model relates to the technical field of batteries, in particular to a battery module bearing frame and a battery pack. Background Art

[0002] An on-vehicle power battery pack usually consists of a box body, a box cover, modules, thermal management and electrical components. The mechanical properties of the battery pack box body depend on the weight and height of the modules and the structure of the beam of the module bearing frame. Among them, the weight and height of the modules are often determined by customer requirements and layout space. The structure of the beam of the module bearing frame is the only factor that can be changed and is an important means to optimize the mechanical properties of the battery pack to enhance the stiffness and strength mechanical properties of the battery pack structure.

[0003] The battery module bearing frame in the prior art includes a first cross beam, a second cross beam, a first longitudinal beam and a second longitudinal beam. Two parallel first cross beams are connected to a plurality of mutually parallel first longitudinal beams to form a frame structure. Then, a plurality of second longitudinal beams are arranged at equal intervals between the two first cross beams, and a plurality of second cross beams are arranged between adjacent first longitudinal beams and second longitudinal beams to form a bearing frame, and the battery module is placed in the bearing frame.

[0004] However, it is difficult to effectively fix the battery module with this kind of bearing frame, and there is a problem of inconvenient fixing in the battery pack box body. Summary of the Utility Model

[0005] The purpose of the utility model is to provide a battery module bearing frame and a battery pack to solve the above technical problems.

[0006] The technical solution adopted by the utility model is as follows:

[0007] A battery module bearing frame is installed in a battery pack box body and includes a frame body, a first connecting piece and a second connecting piece. A plurality of connecting holes are formed in the upper surface of the frame body. The first connecting piece is arranged on the outer edge of the upper end of the frame body, and the second connecting piece is arranged on the inner wall of the lower end of the frame body.

[0008] Preferably, the first connecting pieces are annularly distributed on the upper surface of the frame body, and the first connecting pieces are spot-welded to the battery pack box body.

[0009] Preferably, the second connecting piece includes a plurality of support plates. The plurality of support plates are distributed on the inner wall of the lower end of the frame body, and a gap is provided between adjacent two support plates.

[0010] As a further preference, the support plates are spot-welded to the battery pack box body.

[0011] Preferably, it further includes an outer frame and an inner frame. The outer frame is detachably arranged at the upper end of the frame body, and the inner frame is arranged on the inner walls of both sides of the outer frame.

[0012] More preferably, a third connecting member for connecting the battery module is arranged on the inner frame.

[0013] More preferably, a fourth connecting member for connecting the battery module is arranged inside the outer frame.

[0014] More preferably, the outer frame is connected to the connecting hole on the frame body through a fifth connecting member.

[0015] A battery pack includes a battery pack box body, a battery module arranged in the battery pack box body, and a battery module bearing frame for supporting the battery module.

[0016] The above technical solution has the following advantages or beneficial effects:

[0017] In the present utility model, through the mutual cooperation of the frame body, the outer frame and the inner frame, it has strong rigidity, can bear and restrain a heavier battery module, realizes effective fixation of the battery module, and the first connecting member and the second connecting member on the frame body are connected to the battery pack box body by spot welding, which is convenient for installing the frame body in the battery pack box body. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic structural diagram of the frame body in the present utility model;

[0019] Figure 2 is a schematic structural diagram of the cooperation between the frame body and the battery pack box body in the present utility model;

[0020] Figure 3 is a schematic structural diagram of the cooperation between the battery module bearing frame and the battery module in the present utility model;

[0021] Figure 4 is a schematic structural diagram of the cooperation between the battery module bearing frame and the battery pack box body in the present utility model.

[0022] In the figure: 1. Battery pack box body; 2. Frame body; 201. Reinforcing plate; 3. First connecting member; 4. Second connecting member; 5. Connecting hole; 6. Battery module; 7. Outer frame; 701. First frame; 702. Second frame; 703. Connecting plate; 704. Rib plate; 8. Inner frame; 801. Bottom plate; 802. Bent end; 803. Third connecting member; 804. Fourth connecting member. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] The technical solution of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without making creative efforts shall fall within the protection scope of the present utility model.

[0024] In the description of the present utility model, it should be noted that terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present utility model. In addition, terms such as "first", "second", "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0025] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, terms such as "installation", "connection", and "coupling" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0026] Figure 1 is a schematic structural view of the frame body in the present utility model; Figure 2 is a schematic structural view of the cooperation between the frame body and the battery pack box in the present utility model; Figure 3 is a schematic structural view of the cooperation between the battery module carrier frame and the battery module in the present utility model; Figure 4 is a schematic structural view of the cooperation between the battery module carrier frame and the battery pack box in the present utility model. Please refer to Figures 1 to 4 As shown, a preferred embodiment is shown. A battery module carrier frame is shown, installed in the battery pack box 1, including a frame body 2, a first connector 3, and a second connector 4. A plurality of connection holes 5 are provided on the upper surface of the frame body 2. A first connector 3 is provided on the outer edge of the upper end of the frame body 2, and a second connector 4 is provided on the inner wall of the lower end of the frame body 2. Refer to Figure 1As shown, the first connecting member 3 is arranged in a ring-shaped plate shape and is higher than the height of the upper surface of the frame body 2 for connecting and fixing with the battery pack box body 1. The second connecting member 4 is distributed on the inner wall of the frame body 2 for connecting and fixing with the battery pack box body 1 and can support the battery module 6. In use, the frame body 2 is placed in the battery pack box body 1, and then the first connecting member 3 and the second connecting member 4 are connected and fixed to the inner wall of the battery pack box body 1 by spot welding. Then the battery module 6 is placed in, so that the lower end of the battery module 6 contacts the upper surface of the second connecting member 4.

[0027] Among them, a plurality of reinforcing plates 201 are provided on the outer peripheral wall of the frame body 2 to increase the overall strength of the frame body 2.

[0028] Further, as a preferred embodiment, the first connecting member 3 is annularly distributed on the upper surface of the frame body 2, and the first connecting member 3 is connected to the battery pack box body 1 by spot welding. See Figure 2 As shown, the first connecting member 3 is connected to the inner wall of the battery pack box body 1 by spot welding, and the frame body 2 can be quickly fixed in the battery pack box body 1.

[0029] Further, as a preferred embodiment, the second connecting member 4 includes a plurality of support plates. The plurality of support plates are distributed on the lower inner wall of the frame body 2, and there is a gap between two adjacent support plates. See Figure 2 As shown, the second connecting member 4 includes a plurality of support plates arranged at intervals, and the width of the support plates can be set as required to stably support the battery module 6.

[0030] Among them, the thicknesses of the first support member and the second support member can be set as required.

[0031] Further, as a preferred embodiment, the support plate is connected to the battery pack box body 1 by spot welding, specifically to the bottom wall of the battery pack box body 1, which can realize the quick connection between the frame body 2 and the battery pack box body 1 and prevent the frame body 2 from shaking unstably.

[0032] Further, as a preferred embodiment, it further includes an outer frame 7 and an inner frame 8. The outer frame 7 is detachably arranged at the upper end of the frame body 2, and the inner frame 8 is arranged on the inner walls of both sides of the outer frame 7. See Figure 3 and Figure 4As shown in the figure, the outer frame 7 includes two oppositely arranged first frames 701 and two oppositely arranged second frames 702. Among them, a connecting plate 703 is provided at the lower ends of the two first frames 701. The connecting plate 703 extends into the frame body 2 and is connected to the frame body 2 by bolts. The first frame 701 and the second frame 702 are independently arranged, and a number of rib plates 704 are provided on the outer walls of the first frame 701 and the second frame 702. The rib plates 704 include horizontally arranged rib plates 704 and vertically arranged rib plates 704. For the specific setting method, please refer to Figure 3 As shown in the figure. Among them, a threaded hole is provided on the horizontally arranged rib plate 704 at the lowermost side. A fifth connecting member (bolt or screw) can be installed in the threaded hole, and it is connected to the connection hole 5 on the frame body 2 through the fifth connecting member.

[0033] The inner frame 8 includes a bottom plate 801. The bottom plate 801 is welded to the second frame 702. Bent ends 802 are formed by bending the two ends of the bottom plate 801 at 90°. The third connecting member 803 is arranged on the bent ends 802. For the specific details, please refer to Figure 4 As shown in the figure. Among them, the third connecting member 803 is a bolt, which is used to cooperate with the bolt holes on the battery module 6 to realize the installation of the battery module 6. Among them, the inner frame 8 is specifically arranged on one side where the two second frames 702 are close to each other.

[0034] In this embodiment, the frame body 2, the outer frame 7 and the inner frame 8 can all be made of aluminum alloy material, which can increase the overall stiffness of the load-bearing frame, reduce the weight, have good load-bearing and bending resistance capabilities, can be used in a platformized manner, and is beneficial to reducing the cost of repeated development.

[0035] In addition, a fourth connecting member 804 is also provided inside the outer frame 7. The fourth connecting member 804 is a long bolt. Specifically, the fourth connecting member 804 is arranged between the two first frames 701 and is connected to the two first frames 701.

[0036] During use, first install the frame body 2 in the battery pack box body 1, then install the battery module 6, and then install the first frame 701 and the second frame 702, and limit the battery module 6 in the space formed by the frame body 2 and the outer frame 7 through the third connecting member 803 and the fourth connecting member 804, so as to install the battery module 6 in the battery pack module.

[0037] The battery module load-bearing frame in this embodiment is mainly applied to the battery pack. The battery pack includes a battery pack box body, and a battery module 6 arranged in the battery pack box body 1. A battery module load-bearing frame is arranged in the battery pack box body 1 to support the battery module 6.

[0038] The above are only the preferred embodiments of the present utility model, and thus do not limit the implementation manners and protection scope of the present utility model. For those skilled in the art, it should be realized that all the equivalent substitutions and obvious changes made by using the description and illustrations of the present utility model should be included in the protection scope of the present utility model.

Claims

1. A battery module carrier frame is installed inside a battery pack box, and is characterized in that, It includes a frame body, a first connecting member, and a second connecting member. A plurality of connecting holes are formed in the upper surface of the frame body. The first connecting member is provided at the outer edge of the upper end of the frame body, and the second connecting member is provided on the inner wall of the lower end of the frame body.

2. The battery module carrier frame according to claim 1, wherein, The first connecting members are annularly distributed on the upper surface of the frame body, and the first connecting members are spot-welded to the battery pack box body.

3. The battery module carrier frame according to claim 1, wherein The second connecting member includes a plurality of support plates. The plurality of support plates are distributed on the inner wall of the lower end of the frame body, and a gap is provided between two adjacent support plates.

4. The battery module carrier frame according to claim 3, wherein, The support plates are spot-welded to the battery pack box body.

5. The battery module carrier frame according to claim 1, characterized in that It further includes an outer frame and an inner frame. The outer frame is detachably provided at the upper end of the frame body, and the inner frame is provided on the inner walls on both sides of the outer frame.

6. The battery module carrier frame according to claim 5, wherein, A third connecting member for connecting the battery modules is provided on the inner frame.

7. The battery module carrier frame according to claim 5, wherein A fourth connecting member for connecting the battery modules is provided inside the outer frame.

8. The battery module carrier frame according to claim 5, characterized in that The outer frame is connected to the connecting holes on the frame body through a fifth connecting member.

9. A battery pack, characterized in that, It includes a battery pack box body, battery modules provided in the battery pack box body, and a battery module carrying frame according to any one of claims 1-8 for supporting the battery modules.

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