Fixing structure between battery modules

Abstract

The utility model discloses a fixing structure between battery modules, which is characterized in that along a first direction, one side, facing a second shell, of a first shell is a first end to be fixed, and one side, facing the first shell, of the second shell is a second end to be fixed. The limiting device is arranged between the first battery module and the second battery module and comprises a support limiting assembly, the support limiting assembly comprises a limiting support and a tongue piece, and the limiting support extends in the first direction and is connected with the first end to be fixed. The tongue piece is connected with the second to-be-fixed end, correspondingly arranged at the bottom of the limiting support and used for being matched with the limiting support in the third direction for limiting. Through the matching design of the limiting support and the tongue piece, the displacement of the battery module in the third direction can be effectively limited, it is ensured that the battery module is more stable in the using process, and compared with a glue bonding mode, the structure is simple in installation mode, low in cost and higher in reliability.

Description

TECHNICAL FIELD

[0001] The utility model relates to battery technology field, concretely relates to a battery module fixed structure between. BACKGROUND

[0002] Although the development of new energy vehicles is more and more rapid in recent years, the problem of battery safety is always the restricting factor of large-scale popularization and use of new energy vehicles. Due to the complexity of road conditions, the battery box is subjected to continuous vibration test in the process of vehicle driving, which puts forward very strict requirements on the fixing reliability of the internal module of the battery box.

[0003] When a plurality of battery modules are arranged in the battery pack in the prior art, the two battery modules are usually fixed by structural glue after pressure maintaining, and the pressure maintaining process needs to be handled by a worker, and the overall labor cost is high. UTILITY MODEL CONTENT

[0004] In order to overcome the above-mentioned shortcomings, the utility model aims at providing a battery module fixed structure between to solve the problem of high overall labor cost of fixing two battery modules by structural glue after pressure maintaining in the background technology.

[0005] In order to achieve the above-mentioned purposes, the utility model adopts the technical scheme of a battery module fixed structure between, the first battery module and the second battery module are arranged at intervals along the first direction and / or the second direction, the first battery module comprises a first shell, the second battery module comprises a second shell, and the first shell and the second shell extend along the third direction. The battery module fixed structure between comprises:

[0006] Along the first direction, the side of the first shell facing the second shell is a first fixed end, and the side of the second shell facing the first shell is a second fixed end.

[0007] The limiting device is arranged between the first battery module and the second battery module and comprises a bracket limiting component, the bracket limiting component comprises a limiting bracket and a tongue piece, the limiting bracket extends along the first direction and is connected with the first fixed end. The tongue piece is connected with the second fixed end and is correspondingly arranged at the bottom of the limiting bracket and is used for cooperating with the limiting bracket in the third direction.

[0008] The battery module fixed structure between provided by the utility model can effectively limit the displacement of the battery module in the third direction through the cooperation of the limiting bracket and the tongue piece, and ensure that the battery module is more stable during use. Compared with the structural adhesive bonding method, the installation method is simple, the cost is low, and the reliability is higher.

[0009] In some embodiments, the second end to be fixed is provided with a mounting slot hole at a corresponding position of the tongue. In the third direction, the bottom of the tongue is connected to the bottom of the mounting slot hole, and the top of the tongue is bent in the first direction to the side close to the first end to be fixed, so that when the first battery module and the second battery module are fixedly connected, the limiting support abuts against the top of the tongue and is pressed downward.

[0010] By adopting the above technical solution, the tongue and the limiting support are arranged in cooperation, which can quickly position and fix the first battery module and the second battery module, and the tongue and the limiting support after being pressed downward form a self-locking mechanism, which can effectively prevent loosening when the battery module is subjected to vibration or impact.

[0011] In some embodiments, the limiting device further comprises a plurality of plug-in fixing members, and the plurality of plug-in fixing members are respectively arranged on both sides of the bracket limiting assembly in the third direction and are arranged at intervals in the second direction. Each plug-in fixing member comprises a fixing part and a plug-in part arranged correspondingly in the first direction, the fixing part is connected to the first end to be fixed, and the plug-in part is connected to the second end to be fixed. The fixing part and the plug-in part can be plugged and matched to fixedly connect the first battery module and the second battery module.

[0012] By adopting the above technical solution, the plug-in fixing member is designed to realize quick connection and firm fixation between the battery modules by cooperation of the fixing part and the plug-in part, so as to prevent loosening and displacement of the battery modules. The arrangement of the plug-in fixing member makes the assembly of the battery modules more convenient. The plug-in fixing members arranged at intervals in the second direction can quickly complete the connection of the first battery module and the second battery module, thereby improving the production efficiency.

[0013] In some embodiments, the fixing part comprises two bent stop plates arranged oppositely in the second direction. Each bent stop plate extends in the third direction and is bent in the second direction to the side close to the other bent stop plate to form a clamping interval in cooperation with the first end to be fixed. The plug-in part is sized to be fitted in the clamping interval.

[0014] By adopting the above technical solution, the fixing part forms a clamping interval by two bent stop plates arranged oppositely in the second direction, and forms a buckle type fixing structure in cooperation with the plug-in part, which can realize quick plugging and fixing. Compared with the bolt connection or end plate fixing mode, this structure can effectively prevent loosening when the battery module is subjected to vibration or impact, and improve the fixing reliability.

[0015] In some embodiments, the limiting device further comprises a plurality of upper stoppers, which are arranged above the bracket limiting assembly and correspond to the plurality of plug-in fixing members one by one. Each of the upper stoppers extends along the first direction and is connected to the bottom of the two bent stop plates at both ends, for cooperating with the plug-in part to limit the displacement along the third direction.

[0016] By adopting the above technical scheme, the cooperation between the upper stopper and the plug-in fixing member further limits the displacement of the battery module in the third direction, so that the battery module can still be kept stable under the condition of vibration or impact. In addition, the cooperation between the upper stopper and the plug-in fixing member realizes quick assembly.

[0017] In some embodiments, the limiting device further comprises a plurality of lower stoppers, which are arranged below the bracket limiting assembly and correspond to the plurality of plug-in fixing members one by one. Each of the lower stoppers extends along the first direction and is arranged at the top of the plug-in part, for cooperating with the fixed part to limit the displacement along the third direction.

[0018] By adopting the above technical scheme, the design of the lower stopper makes the assembly of the battery module more convenient. Through the cooperation between the plug-in fixing member and the lower stopper, the battery module can be quickly fixed without complex bolt tightening or welding procedures, thereby simplifying the assembly process.

[0019] In some embodiments, the plug-in part is provided with a weight-reducing groove on the side facing the fixed part along the first direction.

[0020] By adopting the above technical scheme, the design of the weight-reducing groove can reduce the weight while maintaining the structural strength, thereby reducing the overall weight of the battery module fixing structure and realizing lightweight design, so as to facilitate the transportation and installation of the battery module. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 is a perspective view of a first battery module according to an embodiment of the present application;

[0022] Figure 2 is a perspective view of a second battery module according to an embodiment of the present application;

[0023] Figure 3 is a structural schematic view of the first battery module and the second battery module after being fixed according to an embodiment of the present application;

[0024] In the drawings:

[0025] 1. First battery module; 10. First end to be fixed; 2. Second battery module; 20. Second end to be fixed; 21. Mounting slot; 31. Limiting bracket; 32. Tongue; 41. Fixing part; 42. Bending baffle; 43. Snap-fit ​​section; 44. Connecting part; 45. Weight reduction groove; 50. Upper stop part; 51. Lower stop part. Detailed Implementation

[0026] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the scope of protection of the present invention.

[0027] refer to Figures 1 to 3 , Figure 1 A perspective view of the first battery module 1 in a battery module fixing structure provided by an embodiment of the present invention is shown; Figure 2 A perspective view of the second battery module 2 in a battery module fixing structure provided in an embodiment of the present invention is shown. Figure 3 This diagram illustrates the structure of a battery module 1 and a second battery module 2 after being fixed together according to an embodiment of the present invention.

[0028] like Figures 1 to 3 As shown, the technical solution adopted by this utility model is a battery module fixing structure, along the first direction ( Figure 3 (as shown in the X direction) and / or the second direction ... Figure 3 A first battery module 1 and a second battery module 2 are spaced apart in the Y direction (as shown in the middle). The second battery module 2 is spaced apart from the first battery module 1 along a first direction, or spaced apart from the first battery module 1 along a second direction, or the first battery module 1 is spaced apart from the second battery module 1 along both the first and second directions. The first battery module 1 includes a first housing, and the second battery module 2 includes a second housing. Both the first and second housings are spaced apart in the third direction. Figure 3 Extending in the Z-direction (as shown). The battery module fixing structure includes:

[0029] Along the first direction, the side of the first outer shell facing the second outer shell is the first end to be fixed 10, and the side of the second outer shell facing the first outer shell is the second end to be fixed 20.

[0030] A limiting device, disposed between the first battery module 1 and the second battery module 2, includes a bracket limiting assembly. The bracket limiting assembly includes a limiting bracket 31 and a tongue 32. The limiting bracket 31 extends along a first direction and is connected to the first end 10 to be fixed. The tongue 32 is connected to the second end 20 to be fixed and is correspondingly disposed at the bottom of the limiting bracket 31 for upper and lower limiting of the limiting bracket 31 in a third direction.

[0031] The utility model provides a kind of battery module fixed structure, the cooperation design of limiting support 31 and tongue piece 32 can effectively limit the displacement of battery module in third direction, ensure that battery module is more stable in use process, and this structure is compared with glue bonding mode, installation mode is simple, low in cost, with higher reliability.

[0032] In some embodiments, referring to Figures 1 to 3 , for the description of subsequent position direction, first battery module 1 and second battery module 2 in the scheme are spaced apart along the first direction. Second end to be fixed 20 and the corresponding place of tongue piece 32 are equipped with mounting slot hole 21. Along the third direction, the bottom of tongue piece 32 is connected with the bottom of mounting slot hole 21, the top of tongue piece 32 is bent and arranged along the first direction to the side close to first end to be fixed 10, for when first battery module 1 and second battery module 2 are fixedly connected, limiting support 31 and the top of tongue piece 32 abut and press down.

[0033] Exemplarily, the cooperation of tongue piece 32 and limiting support 31 can quickly position and fix first battery module 1 and second battery module 2, and tongue piece 32 and limiting support 31 form a self-locking mechanism after pressing down. This structure can effectively prevent loosening when battery module is subjected to vibration or impact.

[0034] In some embodiments, referring to Figures 1 to 3 , the limiting device further includes a plurality of plug-in fixing pieces, and the plurality of plug-in fixing pieces are respectively arranged on both sides of the support limiting assembly along the third direction and are spaced apart along the second direction. Each plug-in fixing piece includes a fixed part 41 and a plug-in part 44 arranged correspondingly along the first direction, the fixed part 41 is connected with the first end to be fixed 10, and the plug-in part 44 is connected with the second end to be fixed 20. The fixed part 41 and the plug-in part 44 can be plugged and matched to fixedly connect the first battery module 1 and the second battery module 2.

[0035] Exemplarily, the design of plug-in fixing piece realizes the quick connection and firm fixation between battery modules by the cooperation of fixed part 41 and plug-in part 44, to prevent battery modules from loosening and displacement. The setting of plug-in fixing piece makes the assembly of battery module more convenient. The plug-in fixing pieces spaced apart along the second direction can quickly complete the connection of the first battery module 1 and the second battery module 2, thereby improving the production efficiency.

[0036] In some embodiments, referring to Figures 1 to 3The fixed part 41 includes two bending baffles 42 arranged opposite to each other along the second direction. Each bending baffle 42 extends along the third direction and is arranged to bend towards the other baffle along the second direction to form a clamping interval 43 with the first fixed end 10. The connector part 44 is arranged to be inserted into the clamping interval 43.

[0037] Exemplarily, the fixed part 41 forms the clamping interval 43 through the two bending baffles 42 arranged opposite to each other along the second direction, and cooperates with the connector part 44 to form a snap-on fixing structure, which can realize quick insertion and fixing. Compared with the bolt connection or end plate fixing mode, this structure can effectively prevent loosening and improve the fixing reliability when the battery module is subjected to vibration or impact.

[0038] In some embodiments, referring to Figures 1 to 3 The limiting device further includes a plurality of upper stop portions 50 arranged above the bracket limiting assembly and corresponding to the plurality of insertion fixing members. Each upper stop portion 50 extends along the first direction and is connected to the bottom of the two bending baffles 42 at both ends, for limiting the connector part 44 along the third direction.

[0039] Exemplarily, the cooperation between the upper stop portion 50 and the insertion fixing member further limits the displacement of the battery module in the third direction, ensuring that the battery module remains stable under vibration or impact conditions. In addition, the upper stop portion 50 realizes quick assembly through cooperation with the insertion fixing member.

[0040] In some embodiments, referring to Figures 1 to 3 The limiting device further includes a plurality of lower stop portions 51 arranged below the bracket limiting assembly and corresponding to the plurality of insertion fixing members. Each lower stop portion 51 extends along the first direction and is arranged on the top of the connector part 44, for limiting the fixed part 41 along the third direction.

[0041] Exemplarily, the cooperation between the lower stop portion 51 and the insertion fixing member further limits the displacement of the battery module in the third direction, ensuring that the battery module is more stable during use. Compared with the single limiting mode, this double limiting (upper stop portion 50 and lower stop portion 51) design can more effectively prevent the battery module from loosening or falling off, improving the reliability of the overall fixing structure. In addition, the design of the lower stop portion 51 makes the assembly of the battery module more convenient. Through the cooperation between the insertion fixing member and the lower stop portion 51, the battery module can be quickly fixed without complex bolt tightening or welding procedures, simplifying the assembly process.

[0042] In some embodiments, referring to Figures 1 to 3 Figures 1 to 3 The side of the connector part 44 facing the fixed part 41 along the first direction is provided with a weight-reducing groove 45.

[0043] By way of example, the design of the weight reduction groove 45 can maintain structural strength while reducing weight, reduce the overall weight of the battery module fixing structure, and thus achieve a lightweight design, so as to facilitate transportation and installation of the battery module.

[0044] The above embodiments are only for illustrating the technical concept and characteristics of the present application, and the purpose is to enable those skilled in the art to understand the content of the present application and implement it, and cannot limit the protection scope of the present application, and any equivalent changes or modifications made according to the spirit and essence of the present application shall be covered within the protection scope of the present application.

Claims

1. A battery module-to-module fixing structure, a first battery module and a second battery module being spaced apart in a first direction and / or a second direction, the first battery module including a first housing, the second battery module including a second housing, the first housing and the second housing each extending in a third direction; characterized in that, The battery module inter-fixing structure comprises: Along the first direction, one side of the first shell facing the second shell is a first end to be fixed, and one side of the second shell facing the first shell is a second end to be fixed; The limiting device is arranged between the first battery module and the second battery module and comprises a bracket limiting assembly, the bracket limiting assembly comprises a limiting bracket and a tongue, the limiting bracket extends along the first direction and is connected with the first end to be fixed, and the tongue is connected with the second end to be fixed and is correspondingly arranged at the bottom of the limiting bracket and used for cooperating with the limiting bracket in a third direction.

2. The battery inter-module fixation structure according to claim 1, wherein The corresponding position of the second end to be fixed and the tongue is provided with a mounting groove hole; along the third direction, the bottom of the tongue is connected with the bottom of the mounting groove hole, and the top of the tongue is arranged to be bent towards the side close to the first end to be fixed along the first direction, so that when the first battery module and the second battery module are fixedly connected, the limiting bracket and the top of the tongue abut and are pressed downward.

3. The battery inter-module fixation structure according to claim 1, wherein The limiting device further comprises a plurality of plug-in fixing members, the plurality of plug-in fixing members are respectively arranged on both sides of the bracket limiting assembly along the third direction and are arranged at intervals along the second direction; each plug-in fixing member comprises a fixing part and a plug-in part which are correspondingly arranged along the first direction, the fixing part is connected with the first end to be fixed, and the plug-in part is connected with the second end to be fixed; the fixing part and the plug-in part can be plug-in matched, and are used for fixedly connecting the first battery module and the second battery module.

4. The battery inter-module fixation structure according to claim 3, characterized in that, The fixing part comprises two bent stop plates which are oppositely arranged along the second direction; each bent stop plate extends along the third direction and is arranged to be bent towards the opposite direction along the second direction, so as to cooperate with the first end to be fixed to form a clamping interval; the plug-in part is arranged to be adaptively sized to the clamping interval, and is used for being plug-in fixed in the clamping interval.

5. The battery inter-module fixation structure according to claim 4, wherein The limiting device further comprises a plurality of upper stop parts, the plurality of upper stop parts are arranged above the bracket limiting assembly and are correspondingly arranged with the plurality of plug-in fixing members one by one; each upper stop part extends along the first direction, and both ends are correspondingly connected with the bottoms of the two bent stop plates, and is used for cooperating with the plug-in part in the third direction.

6. The battery inter-module fixation structure according to claim 4, wherein The limiting device further comprises a plurality of lower stop parts, the plurality of lower stop parts are arranged below the bracket limiting assembly and are correspondingly arranged with the plurality of plug-in fixing members one by one; each lower stop part extends along the first direction and is arranged at the top of the plug-in part, and is used for cooperating with the fixing part in the third direction.

7. The battery inter-module fixation structure according to claim 3, wherein One side of the plug-in part facing the fixing part along the first direction is provided with a weight-reducing groove.

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