Battery module fixing support and battery pack

Abstract

The utility model discloses a battery module fixing support and a battery pack, and relates to the technical field of batteries, the battery module fixing support comprises a bearing frame, a support main body and inner side supports, the bearing frame is provided with the support main body, the inner wall of the support main body is provided with a plurality of inner side supports, and each inner side support is provided with a plurality of first connecting pieces; through the arrangement of the bracket main body, the inner side frame and the rib plates, the bracket main body has enough rigidity and strength performance, can restrain a heavier battery module, and ensures that the performance requirements are met under complex and changeable driving road conditions; meanwhile, good mechanical properties are achieved, and the bearing capacity and the deformation resistance are good.

Description

Technical Field

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

[0002] A power battery pack is usually composed of a box cover, a box body, modules, electrical components and a thermal management system, while a cylindrical battery cell module is mainly composed of a cylindrical battery cell, an end plate and a fixed bracket. There is a big difference between the design of a cylindrical module and a square module. A square module is usually fixedly connected by an end plate and a side plate, with a low center of gravity and good reliability, while a cylindrical module is usually designed with a high center of gravity, resulting in insufficient mechanical properties. It is often necessary to increase the rigidity and mechanical properties of the module structure by adding brackets.

[0003] The existing fixed bracket includes a bracket body and a mounting portion for mounting a battery module inside the bracket body. In order to ensure the connection reliability between the battery pack module and the box frame beam, and to ensure the effective transmission and balance of force, a commonly used method in the prior art is to increase the thickness of the module fixing bracket. Although this method has obvious effects, the bracket is usually bulky and costly, and cannot meet the requirements of lightweight. At the same time, stress is more likely to be concentrated and cannot be released. Utility Model Content

[0004] The purpose of the utility model is to provide a battery module fixing bracket and a battery pack to solve the above-mentioned technical problems.

[0005] The technical solution adopted by the utility model is as follows:

[0006] A battery module fixing bracket comprises a load-bearing frame, a bracket body and an inner bracket, wherein the bracket body is arranged on the load-bearing frame, a plurality of inner brackets are arranged on the inner wall of the bracket body, and each of the inner brackets is respectively provided with a plurality of first connecting members.

[0007] Preferably, the bracket body includes a first outer frame and a second outer frame, the two first outer frames and the two second outer frames are distributed in a ring shape, and the lower end of the first outer frame has a connecting portion.

[0008] As a further preference, the lower end of the first outer frame is arranged inside the supporting frame, and the connecting portion is connected to the supporting frame.

[0009] As a further preference, a plurality of ribs are provided on the outer peripheral walls of the first outer frame and the second outer frame.

[0010] As a further preference, a plurality of first threaded holes are provided on the rib plate located at the lowermost side.

[0011] As a further preference, a plurality of second connecting members are provided between the two first outer frames, and two ends of the second connecting members are connected to two sides of the two first outer frames.

[0012] As a further preference, each of the inner brackets includes a connecting plate, and the connecting plate is arranged on the inner wall of the second outer frame.

[0013] As a further preference, both ends of the connecting plate are bent inwardly to form bent ends, and the first connecting member is arranged at the bent ends.

[0014] A battery pack comprises a battery pack case, a battery module arranged in the battery pack case, and a battery module fixing bracket for carrying the battery module.

[0015] The above technical solution has the following advantages or beneficial effects:

[0016] In the utility model, by arranging the bracket body, the inner frame and the rib plate, the bracket body has sufficient rigidity and strength to restrain the heavier battery module, ensuring that the performance requirements are met under complex and changeable driving conditions; at the same time, it has good mechanical properties, and its load-bearing capacity and deformation resistance are good. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the bracket body in the utility model;

[0018] Figure 2 It is a schematic diagram of the coordination of the bracket body, the load-bearing frame and the battery pack box in the utility model;

[0019] Figure 3 It is a structural schematic diagram of the load-bearing frame in the utility model;

[0020] Figure 4 It is a structural schematic diagram of a battery module installed in a battery module fixing bracket in the utility model.

[0021] In the figure: 1. load-bearing frame; 2. bracket body; 201. first outer frame; 202. second outer frame; 203. connection part; 204. rib plate; 205. first threaded hole; 206. second connection piece; 3. inner bracket; 301. connection plate; 302. bending end; 303. first connection piece; 4. battery pack body; 5. battery module. DETAILED DESCRIPTION

[0022] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] In the description of the present invention, it should be noted that if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, if the terms "first", "second", "third" appear, they are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0024] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" 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 a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0025] Figure 1 It is a structural schematic diagram of the bracket body in the utility model; Figure 2 It is a schematic diagram of the coordination of the bracket body, the load-bearing frame and the battery pack box in the utility model; Figure 3 It is a structural schematic diagram of the load-bearing frame in the utility model; Figure 4 This is a schematic diagram of the structure in which the battery module is installed in the battery module fixing bracket in the utility model. Figures 1 to 4 FIG. 1 shows a preferred embodiment, which shows a battery module fixing bracket, including a supporting frame 1, a bracket body 2 and an inner bracket 3. The supporting frame 1 is provided with a bracket body 2, and the inner wall of the bracket body 2 is provided with a plurality of inner brackets 3, and each inner bracket 3 is provided with a plurality of first connecting members 303. In this embodiment, see Figure 1 and Figure 4As shown, the supporting frame 1 is detachably mounted on the lower end of the bracket body 2, and the inner bracket 3 is detachably or fixedly mounted on the side wall of the bracket body 2, wherein the bracket body 2 and the inner bracket 3 are both used to fix the battery module 5, the battery module 5 is installed in the bracket body 2, and then connected to the battery module 5 through the first connecting member 303 on the inner bracket 3, and the first connecting member 303 can be selected from bolts or screws, which are used to cooperate with the connecting holes on the side wall of the battery module 5.

[0026] Further, as a preferred embodiment, the support body 2 includes a first outer frame 201 and a second outer frame 202, the two first outer frames 201 and the two second outer frames 202 are distributed in a ring shape, and the lower end of the first outer frame 201 has a connecting portion 203. The first outer frame 201 and the second outer frame 202 are independently arranged, and the first outer frame 201 and the second outer frame 202 can be connected to the load-bearing frame 1 by bolts. The two first outer frames 201 and the two second outer frames 202 are distributed on the periphery of the battery module 5, and are used to constrain the battery module 5.

[0027] Further, as a preferred embodiment, the lower end of the first outer frame 201 is disposed inside the supporting frame 1, and the connecting portion 203 is connected to the supporting frame 1. Figure 2 As shown, a plurality of threaded holes are provided at the upper end of the load-bearing frame 1 for installing bolts, so as to facilitate the connection between the first outer frame 201 and the second outer frame 202. The connecting portion 203 of the first outer frame 201 enters into the load-bearing frame 1 and is connected to the load-bearing frame 1 by bolts.

[0028] Further, as a preferred embodiment, a plurality of ribs 204 are provided on the outer peripheral walls of the first outer frame 201 and the second outer frame 202. A plurality of ribs 204 are provided, and are arranged vertically and horizontally. For specific arrangement, see Figure 1 As shown. A plurality of first threaded holes 205 are provided on the rib plate 204 disposed transversely at the bottom, and bolts can pass through the first threaded holes 205 and connect with the threaded holes on the supporting frame 1, thereby connecting and fixing the first outer frame 201 and the second outer frame 202 to the supporting frame 1. Bolt holes are provided on the outer peripheral wall of the supporting frame 1 for installing bolts, and the bolts are used to connect and fix the battery pack box 4.

[0029] In this embodiment, the ribs 204 are connected to the first outer frame 201 and the second outer frame 202 by welding, and the transverse ribs 204 and the longitudinal ribs 204 can be integrally arranged or welded.

[0030] The rib plate 204 is provided to provide the support body 2 with sufficient rigidity and strength, and good bearing capacity and deformation resistance. When the first outer frame 201 and the second outer frame 202 are subjected to force, the force can be transferred to the rib plate 204 to avoid deformation.

[0031] In this embodiment, the first outer frame 201, the second outer frame 202, the rib plate 204 and the supporting frame 1 can all be made of aluminum alloy, which can reduce the overall weight while ensuring strength.

[0032] Further, as a preferred embodiment, a plurality of second connecting members 206 are provided between the two first outer frames 201, and the two ends of the second connecting members 206 are connected to the two sides of the two first outer frames 201. The second connecting members 206 are long bolts, and the two first outer frames 201 are connected to the battery module 5 through the second connecting members 206, or can be connected to the battery module 5 by gluing.

[0033] Further, as a preferred embodiment, each inner bracket 3 includes a connecting plate 301, and the connecting plate 301 is arranged on the inner wall of the second outer frame 202. The connecting plate 301 in the inner bracket 3 and the second outer frame 202 can be welded or bolted, see Figure 2 As shown, at least one inner bracket 3 is provided on the inner wall of each second outer frame 202, and the specific number can be set as needed. Both ends of the connecting plate 301 are bent inward to form a bent end 302, and the first connecting member 303 is provided at the bent end 302, and is connected and fixed to the battery module 5 through the first connecting member 303.

[0034] When in use, the lower end of the battery module 5 can be placed in the supporting frame 1 first, and then the first outer frame 201 and the second outer frame 202 can be installed, so that the second connecting member 206 on the first outer frame 201 passes through the battery module 5, and then the first connecting member 303 on the inner frame of the second outer frame 202 is connected to the battery module 5, so as to fix the position of the battery module 5 and prevent the battery module 5 from shaking. Then, the bracket with the battery module 5 installed is placed in the battery pack box 4, and the supporting frame 1 is connected and fixed to the battery pack box 4 by bolts.

[0035] The battery module fixing bracket in this embodiment is mainly used on a battery pack, which includes a battery pack case 4 and a battery module 5 arranged in the battery pack case 4. The battery module fixing bracket is arranged in the battery pack case 4 to support the battery module 5.

[0036] The above description is only a preferred embodiment of the present invention, and does not limit the implementation mode 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 battery module fixing bracket, characterized in that: It comprises a bearing frame, a bracket body and an inner bracket. The bearing frame is provided with the bracket body. The inner wall of the bracket body is provided with a plurality of inner brackets. Each of the inner brackets is provided with a plurality of first connecting members.

2. The battery module fixing bracket according to claim 1, characterized in that: The support body includes a first outer frame and a second outer frame. The two first outer frames and the two second outer frames are distributed in a ring shape. The lower end of the first outer frame has a connecting portion.

3. The battery module fixing bracket according to claim 2, characterized in that: The lower end of the first outer frame is arranged inside the supporting frame, and the connecting portion is connected to the supporting frame.

4. The battery module fixing bracket according to claim 2, characterized in that: A plurality of ribs are provided on the outer peripheral walls of the first outer frame and the second outer frame.

5. The battery module fixing bracket according to claim 4, characterized in that: A plurality of first threaded holes are formed on the rib plate located at the lowermost side.

6. The battery module fixing bracket according to claim 2, characterized in that: A plurality of second connecting members are arranged between the two first outer frames, and two ends of the second connecting members are connected to two sides of the two first outer frames.

7. The battery module fixing bracket according to claim 2, characterized in that: Each of the inner brackets includes a connecting plate, and the connecting plate is arranged on the inner wall of the second outer frame.

8. The battery module fixing bracket according to claim 7, characterized in that: Both ends of the connecting plate are bent inwardly to form bent ends, and the first connecting member is arranged at the bent ends.

9. A battery pack, characterized in that: It comprises a battery pack case, and a battery module arranged in the battery pack case, and also comprises a battery module fixing bracket as described in any one of claims 1-8 for supporting the battery module.

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