Double-layer battery pack box body structure

Abstract

The utility model discloses a double-layer battery pack box body structure which comprises an upper-layer module and a lower-layer module which are arranged up and down, a box body for accommodating the upper-layer module and the lower-layer module, and a fixing structure, the fixing structure comprises threaded sleeves which are fixedly connected to the periphery of the lower layer module in the vertical direction, guide blocks which are fixedly connected to the periphery of the upper layer module and correspond to the threaded sleeves in a one-to-one mode, and screw rods which penetrate through the guide blocks and are in threaded connection with the threaded sleeves. The upper layer module and the lower layer module are fixed into a whole through the fixing structure, the overall stability of the battery pack is improved, and the battery pack and the box body are effectively connected together through the connection of the fixing structure and the box body, so that the battery pack is prevented from vibrating during shaking, and the possibility that a reinforcing structure is loosened due to vibration is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of battery packs, in particular to a double-layer battery pack box structure. Background Art

[0002] Double-layer battery packs are usually used in low-speed vehicle projects. In response to market needs, two-wheeled vehicle manufacturers are gradually replacing lead-acid batteries with lithium iron phosphate batteries. Limited by the existing frame space, a double-layer mode is usually required to meet the power requirements. The overall height is relatively large, which makes it impossible to ensure the overall strength and rigidity. Under such circumstances, it is urgent to develop a double-layer battery pack box structure to achieve reliable fixation of the upper module and solve the problem of low overall strength and rigidity of the battery pack. Utility Model Content

[0003] The purpose of the present invention is to provide a double-layer battery pack box structure to solve the problems raised in the above background technology.

[0004] To achieve the above objectives, the present invention provides the following technical solutions:

[0005] A double-layer battery pack box structure includes an upper module and a lower module placed above and below, and a box body that accommodates the upper module and the lower module. It also includes a fixing structure, which includes a vertical threaded sleeve fixed to the outer periphery of the lower module, a guide block fixed to the outer periphery of the upper module and corresponding to the threaded sleeve one by one, and a screw passing through the guide block and threadedly connected to the threaded sleeve.

[0006] The utility model connects the upper module 1 and the lower module 2 into one body through the fixing structure 4, thereby improving the overall connection strength of the battery pack.

[0007] Further solution: a threaded hole is opened at the bottom of the box body, and the screw rod passes through the threaded sleeve and the threaded hole in sequence and is fixedly connected to the box body.

[0008] The battery pack as a whole is fixed to the box body 3 to further achieve reliable fixation of the battery pack as a whole.

[0009] A further solution includes a buffer bump disposed on the top of the upper module.

[0010] The top of the buffer protrusion 5 abuts against the top wall of the box body 1, providing a buffering effect when the battery box shakes to prevent the battery pack from being damaged.

[0011] Further solution: the buffer bump includes a bump body and an adhesive layer adhered to the upper end of the bump body.

[0012] The adhesive layer 52 is configured as foam with adhesive backing and can be bonded to the inner wall of the box body 3 .

[0013] A further solution includes an adhesive plate disposed between the upper module and the lower module.

[0014] The bonding plate 6 is configured as double-sided adhesive foam to bond the upper and lower modules together, further strengthening the stability of the connection between the upper module 1 and the lower module 2.

[0015] Further solution: the box body includes a bottom frame and a cover body arranged on the upper part of the bottom frame, and the bottom frame and the cover body are connected by connecting bolts.

[0016] Further solution: the number of the buffer bumps is at least two.

[0017] Further solution: the cross section of the upper module is smaller than the cross section of the lower module.

[0018] Further solution: one side of the upper module is aligned with the lower module, and the other side is connected to the upper end surface of the lower module through a reinforcement structure.

[0019] Further solution: The reinforcement structure includes a nut fixed on the lower module, a fixing block fixed on the upper module, and a short bolt passing through the fixing block and threadedly connected to the nut.

[0020] Place the smaller module on top and align one side of the two modules to facilitate the installation of the fixing structure 4 on that side. On the opposite side of the side, reinforce it with another set of reinforcement structures 7. Unlike the fixing structure 4, short bolts are used, and the bottom end of the short bolts abuts against the top surface of the lower module 2.

[0021] Compared with the prior art, the beneficial effects of the present invention are:

[0022] The utility model fixes the upper and lower modules into one body through a fixing structure, thereby improving the overall stability of the battery pack, and effectively connects the battery pack and the box body through the connection between the fixing structure and the box body, thereby avoiding vibration of the battery pack when shaking occurs and avoiding the possibility of the reinforcement structure becoming loose due to vibration.

[0023] The bumps provide additional cushioning between the battery pack and the enclosure, preventing damage from collision when the battery pack vibrates. The adhesive plate between the upper and lower modules bonds them together to prevent displacement and provides preliminary reinforcement. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is an exploded view of the structure of the utility model;

[0025] Figure 2 This utility model is different from Figure 1 Exploded diagram of the utility model structure;

[0026] In the figure: 1-upper module, 2-lower module, 3-box, 31-bottom frame, 32-cover, 4-fixing structure, 41-threaded sleeve, 42-guide block, 43-screw, 5-buffer bump, 51-bump body, 52-adhesive layer, 6-adhesive plate, 7-reinforcement structure, 71-nut, 72-fixing block. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0028] In the description of the present invention, it should be noted that the terms "upper", "lower", "left", "right", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, or are the directions or positional relationships in which the product of the present invention is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as a limitation on the present invention.

[0029] See also Figure 1-2 A double-layer battery pack case structure includes an upper module 1 and a lower module 2 placed one above the other, and a case 3 that accommodates the upper and lower modules 1 and 2. The case also includes a fixing structure 4, which includes a vertically threaded sleeve 41 fixed to the outer periphery of the lower module 2, a guide block 42 fixed to the outer periphery of the upper module 1 and corresponding to the threaded sleeve 41, and a screw 43 passing through the guide block 42 and threadedly connected to the threaded sleeve 41. The fixing structure 4 connects the upper module 1 and the lower module 2 into a single unit, thereby improving the overall connection strength of the battery pack.

[0030] Furthermore, a threaded hole is formed at the bottom of the box 3, and the screw 43 passes through the threaded sleeve 41 and the threaded hole in sequence to be fixedly connected to the box 3. The battery pack is fixed to the box 3, further achieving a reliable fixation of the battery pack as a whole.

[0031] Furthermore, a buffering protrusion 5 is provided on the top of the upper module 1. The top of the buffering protrusion 5 abuts against the top wall of the box body 1, providing a buffering effect when the battery box shakes to prevent the battery pack from being damaged.

[0032] Furthermore, the buffer bump 5 includes a bump body 51 and an adhesive layer 52 bonded to the upper end of the bump body 51. The adhesive layer 52 is configured as foam with adhesive backing and can be bonded to the inner wall of the box body 3.

[0033] Furthermore, it also includes an adhesive plate 6 disposed between the upper module 1 and the lower module 2. The adhesive plate 6 is configured as double-sided adhesive foam to bond the upper and lower modules together, further strengthening the stability of the connection between the upper module 1 and the lower module 2.

[0034] Furthermore, the box body 3 includes a bottom frame 31 and a cover body 32 covering the upper portion of the bottom frame 31 , and the bottom frame 31 and the cover body 32 are connected by connecting bolts.

[0035] Furthermore, the number of the buffer bumps 5 is at least two. In this embodiment, the buffer bumps 5 are set to two and are symmetrically arranged at the top of the upper module 1. In other embodiments, the buffer bumps 5 can also be set to four.

[0036] Furthermore, the cross section of the upper module 1 is smaller than that of the lower module 2. One side of the upper module 1 is aligned with the lower module 2, and the other side is connected to the upper end surface of the lower module 2 via a reinforcement structure 7.

[0037] Furthermore, the reinforcement structure 7 includes a nut 71 fixed to the lower module 2, a fixing block 72 fixed to the upper module 1, and a short bolt threaded through the fixing block 72 and connected to the nut 71. The smaller module is placed on top, and one side of the two modules is aligned to facilitate the installation of the fixing structure 4 on that side. On the opposite side, another set of reinforcement structures 7 is used for reinforcement. Unlike the fixing structure 4, this one uses a short bolt, the bottom end of which abuts the top surface of the lower module 2.

[0038] Although this specification is described according to implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

[0039] Therefore, the above description is only a preferred embodiment of the present application and is not intended to limit the scope of implementation of the present application; that is, all equivalent modifications made according to the scope of the claims of the present application are within the scope of protection of the claims of the present application.

Claims

1. A double-layer battery pack box structure, comprising an upper module (1) and a lower module (2) placed above and below, and a box (3) accommodating the upper module (1) and the lower module (2), characterized in that: The fixing structure (4) further comprises a vertical threaded sleeve (41) fixed to the outer periphery of the lower module (2), a guide block (42) fixed to the outer periphery of the upper module (1) and corresponding to the threaded sleeve (41), and a screw (43) passing through the guide block (42) and threadedly connected to the threaded sleeve (41); A threaded hole is provided at the bottom of the box body (3), and the screw rod (43) passes through the threaded sleeve (41) and the threaded hole in sequence to be fixedly connected to the box body (3).

2. The double-layer battery pack box structure according to claim 1, characterized in that: It also includes a buffering protrusion (5) arranged on the top of the upper module (1).

3. The double-layer battery pack box structure according to claim 2, characterized in that: The buffer bump (5) comprises a bump body (51) and an adhesive layer (52) adhered to the upper end of the bump body (51).

4. The double-layer battery pack box structure according to claim 1, characterized in that: It also includes an adhesive plate (6) arranged between the upper module (1) and the lower module (2).

5. The double-layer battery pack box structure according to claim 1, characterized in that: The box body (3) comprises a bottom frame (31) and a cover body (32) arranged on the upper part of the bottom frame (31); the bottom frame (31) and the cover body (32) are connected by connecting bolts.

6. The double-layer battery pack box structure according to claim 2, characterized in that: The number of the buffer bumps (5) is at least two.

7. The double-layer battery pack box structure according to claim 1, characterized in that: The cross section of the upper module (1) is smaller than the cross section of the lower module (2).

8. The double-layer battery pack box structure according to claim 7, characterized in that: One side of the upper module (1) is aligned with the lower module (2), and the other side is connected to the upper end surface of the lower module (2) via a reinforcement structure (7).

9. The double-layer battery pack box structure according to claim 8, characterized in that: The reinforcement structure (7) comprises a nut (71) fixed on the lower module (2), a fixing block (72) fixed on the upper module (1), and a short bolt passing through the fixing block (72) and threadedly connected to the nut (71).

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