Small battery module protection box

Abstract

The present invention discloses a small battery module protection box, which solves the problems of short battery life and unsafe use in the prior art, and is characterized in that: the box body (1) is a rectangular straight-cylinder structure, the four edges are arc-shaped edges (4), and a circular hole (5) is arranged at the edge of the top opening; the box cover (2) is a concave square structure, two threading holes (9) for leading out the positive and negative bus of the battery module are arranged on the top plate, and threaded holes (7) are arranged at the circular holes (5) arranged at the edge of the top opening of the box body (1) on the surrounding side walls, and an embedded fixing edge (8) is arranged at the outer edge of the top. The present invention has the advantages of compact structure, simple manufacture, safe use, beautiful appearance, etc., and can be widely used in various types of electric vehicles.

Description

Technical field:

[0001] The invention belongs to the field of new energy battery accessories, and in particular relates to a small battery module protection box. Background technology:

[0002] The 21st century is an era with new energy as its theme, and new energy power batteries also show their unstoppable development momentum in response to the needs of the times. In the process of battery production and use, there are problems such as fire and explosion. At present, electric vehicle batteries are only wrapped with PVC plastic parts in production and use, and the outer layer is not protected. When the battery is impacted by fire and explosion, it cannot effectively protect the safety of the vehicle and the user. At the same time, the battery module cannot be isolated from the outside world by vacuum, and cannot effectively prevent the occurrence of adverse phenomena such as water ingress and leakage on rainy days, which reduces the service life of the battery. In order to solve the above problems, the existing solution is generally to place a small battery module in the battery box, but most of the existing battery boxes adopt a box cover with a card outside the box, which increases the overall size. The sharp edges of the box body bring safety hazards to employees in production. The flat round hole design of the box body makes the tail of the screw exposed outside the box body, occupying the overall size. The thickness of the screw hole of the box cover is insufficient, which affects the number of times the screw thread is recycled. Summary of the invention:

[0003] The object of the present invention is to provide a small battery module protection box which has a compact structure, is simple to manufacture, is safe to use and has a beautiful appearance.

[0004] The technical solution adopted by the present invention is as follows: it comprises a box body, a box cover and a battery module arranged in the box body, the box body is a rectangular straight-cylindrical structure, the four sides of the box body are arc-shaped edges, and a circular hole is arranged at the edge of the open end of the box body; the box cover is a concave square structure, two threading holes for leading out the positive and negative buses of the battery module are arranged on the top plate of the box cover, threaded holes are arranged on the side walls of the box cover corresponding to the circular holes, and an embedded fixing edge is arranged at the open end of the box cover; the battery module is placed in the box body, and a flame-retardant colloid is filled between the battery module and the box body.

[0005] Furthermore, the circular hole is a sinking hole in the outer wall.

[0006] Furthermore, a flange is provided on the inner wall of the threaded hole.

[0007] Furthermore, the box body and the box cover are both made of metal material.

[0008] The beneficial effects of the present invention are as follows: since the battery module and the box body are sealed into a whole by a vacuum glue filling process, the battery module is isolated from the outside world by vacuum, effectively preventing the occurrence of adverse phenomena such as water ingress and water leakage, and extending the service life of the battery; the box body adopts a rounded edge design to eliminate the safety hazards brought to employees by sharp edges; the box cover adopts an embedded structure to reduce the overall external dimensions; the circular hole of the box body adopts an inward concave design to allow the tail of the screw to be embedded in the box body, thereby not occupying the overall size; the inner wall flange design of the screw hole of the box cover increases the number of recycling times of the screw thread and increases the service life of the battery module protection box. The present invention has the advantages of beautiful appearance, compact structure, simple manufacture, safe use, etc., and can be widely used in various types of electric vehicles. Description of the drawings:

[0009] Figure 1 This is a three-dimensional assembly exploded view of the present invention;

[0010] Figure 2 It is a schematic diagram of the three-dimensional structure of the box cover of the present invention;

[0011] Figure 3 It is a schematic diagram of a partially enlarged structure of the box body of the present invention.

[0012] In the figure: 1 is a box body, 2 is a box cover, 3 is a battery module, 4 is an arc-shaped edge, 5 is a round hole, 6 is a positive and negative bus, 7 is a threaded hole, 8 is an embedded fixed edge, and 9 is a threading hole. Specific implementation method:

[0013] The present invention will be further described below in conjunction with the accompanying drawings.

[0014] like Figure 1 As shown, the small battery module protection box is composed of a box body 1, a box cover 2 and a battery module 3 arranged in the box body 1. The box body 1 can be made of metal material according to the shape and size of the battery module. The whole is a rectangular straight cylinder structure with four arc-shaped edges 4. A circular hole 5 is provided at the edge of the top opening. The circular hole 5 is a sinking hole on the outer wall (such as Figure 3 The box cover 2 is also made of metal material and is a concave square structure. Two threading holes 9 for leading out the positive and negative bus of the battery module are set on the top plate. Threaded holes 7 are set at the circular holes 5 set at the edge of the top opening end of the box body 1 on the surrounding side walls, and flanges are set on the inner walls of the threaded holes 7 to increase the number of times the screw threads can be recycled. The open end of the box cover 2 is provided with an embedded fixing edge 8 (as shown in FIG. Figure 2As shown). When implementing the present invention, taking a small battery module 3 with a size of 74mm×66mm×250mm as an example, a rectangular straight-cylinder box body 1 with a size of 78mm×70mm×260mm and a concave square box cover 2 with a size of 75mm×67mm×10mm are made of metal material. First, the small battery module 3 is placed in the box body 1 with a rectangular straight-cylinder structure, and the positive and negative bus 6 is led out through the positive and negative bus threading holes 9 on the bottom plate of the box cover 2, and then the box cover 2 is embedded in the box body 1, and the embedded fixed edge 8 is stuck on the opening edge of the rectangular straight-cylinder box body 1. Then, a vacuum glue pouring process is used around the small battery module 3, and the flame-retardant colloid is filled between the battery module 3 and the box body 1, so that the battery module 3 is in a vacuum state, and finally the box body 1, the box cover 2 and the small battery module 3 are fixed into one by bolts through the sunken circular hole 5 set at the opening edge of the box body 1 and the corresponding inward flange threaded hole 7 of the box cover 2. The invention has the advantages of compact structure, simple manufacture, safe use, beautiful appearance, etc., and can be widely applied to various types of electric vehicles.

Claims

1. A small battery module protection box, comprising a box body (1), a box cover (2) and a battery module (3) arranged in the box body (1), characterized in that: The box body (1) is a rectangular straight-cylindrical structure. The four sides of the box body (1) are arc-shaped edges (4). The battery module (3) and the box body (1) are sealed into a whole by using a vacuum glue injection process, so that the battery module is vacuum-isolated from the outside, effectively preventing water ingress and water leakage, and extending the service life of the battery. A circular hole (5) is provided at the edge of the opening end of the box body (1). The box cover (2) is an inwardly concave square structure. The box cover (2) adopts an embedded structure, which can reduce the overall external dimensions. The circular hole (5) of the box body (1) adopts an inwardly concave design. The tail of the screw is embedded in the box body so that it does not occupy the overall size; two threading holes (9) for leading out the positive and negative bus bars of the battery module are arranged on the top plate of the box cover (2); threaded holes (7) are arranged on the side wall of the box cover (2) corresponding to the circular holes (5); and an embedded fixing edge (8) is arranged on the open end of the box cover (2); the battery module (3) is placed in the box body (1), and a flame retardant colloid is filled between the battery module (3) and the box body (1); a flange is arranged on the inner wall of the threaded hole (7); the box body (1) and the box cover (2) are both made of metal materials; A small battery module (3) with a size of 74 mm × 66 mm × 250 mm is made of a metal material to form a rectangular straight-cylindrical box body (1) with a size of 78 mm × 70 mm × 260 mm and a concave square box cover (2) with a size of 75 mm × 67 mm × 10 mm. First, the small battery module (3) is placed in the rectangular straight-cylindrical box body (1), and the positive and negative bus bars (6) are led out through the positive and negative bus bar threading holes (9) on the bottom plate of the box cover (2). Then, the box cover (2 ) is embedded in the box body (1), at which time the embedded fixed edge (8) is stuck on the edge of the opening of the rectangular straight-cylindrical box body (1), and then a vacuum glue pouring process is used around the small battery module (3) to fill the space between the battery module (3) and the box body (1) with a flame-retardant colloid, so that the battery module (3) is in a vacuum state. Finally, the box body (1), the box cover (2) and the small battery module (3) are fixed together by bolts through the sunken circular hole (5) provided at the edge of the opening of the box body (1) and the corresponding inward flange threaded hole (7) of the box cover (2).

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