Battery outer box

Abstract

The utility model discloses a battery outer box which comprises a box body with a containing cavity, a cover body covering the box body to seal a cavity opening of the containing cavity and a connecting piece located in the containing cavity and adjacent to the cavity opening. A first through hole is formed in the side wall of the cover body, and a second through hole aligned with the first through hole is formed in the side wall of the box body; the connecting piece is located in the containing cavity and matched with the side wall of the box body in a sealing mode, a blind hole communicating with the second through hole in an aligned mode is formed in the connecting piece, and an internal thread is arranged on the hole wall of the blind hole. The battery outer box disclosed by the utility model can prevent water from entering the screw holes, so that the waterproof effect of the battery outer box disclosed by the utility model is improved.

Description

Technical Field

[0001] The utility model relates to the field of batteries, in particular to a battery outer box used in the field of new energy. Background Art

[0002] As we all know, the new energy industry relies on batteries, especially lithium batteries. Due to their high energy density, consistent capacity, and ability to support high-rate charge and discharge, lithium batteries have gradually become a mainstream product in the new energy industry.

[0003] Among them, during the use of lithium batteries, the use of outer boxes is indispensable. Through the use of outer boxes, the lithium battery modules composed of a preset number of lithium batteries are protected to prevent the lithium battery modules inside the outer boxes from rusting and being squeezed and deformed, resulting in dangerous accidents or unusable.

[0004] However, the existing outer box has the disadvantage of poor waterproofness because water can enter through the screw holes. At the same time, the existing outer box also has the disadvantages of being easily deformed and inconvenient to lift when loaded with a heavy load.

[0005] Therefore, a battery case is provided to overcome one or more of the above-mentioned drawbacks. Utility Model Content

[0006] The utility model aims to provide a battery outer box which can prevent water from entering the screw holes and improve the waterproof effect.

[0007] To achieve the above objectives, the battery outer case of the present invention comprises a case body having a housing cavity, a cover body that covers the case body to seal the opening of the housing cavity, and a connector located within the housing cavity and adjacent to the opening. The cover body has a first through-hole defined in a side wall, and the case body has a second through-hole defined in a side wall aligned with the first through-hole. The connector seals against the case body side wall, and the connector has a blind hole defined within it that aligns with the second through-hole and communicates with the second through-hole, with the blind hole wall having an internal thread.

[0008] Compared with the prior art, the design of "the connecting piece is sealed with the side wall of the box body, a blind hole is provided in the connecting piece and is aligned with the second through hole and connected, and an internal thread is provided on the hole wall of the blind hole" can prevent water from entering through the screw hole, thereby effectively improving the waterproof effect of the battery outer box of the utility model.

[0009] Preferably, the connecting piece is seal-welded to the side wall of the box.

[0010] Preferably, all side walls of the cover body are provided with the first through holes, each of the first through holes corresponds to one of the second through holes, and each of the second through holes corresponds to one of the connecting members.

[0011] Preferably, the connecting piece is threadedly connected to the side wall of the box; or, the connecting piece is seal-welded to the side wall of the box.

[0012] Preferably, a sealing strip is provided on the cover body for sealing the cavity opening of the accommodating cavity.

[0013] Preferably, the sealing strip is annular, fixed to the end wall surface of the cover body, and used for abutting and cooperating with the end surface of the box body penetrated by the cavity.

[0014] Preferably, the side walls of the box body are fully welded to each other.

[0015] Preferably, all side walls of the box body have an inwardly recessed necking structure at a position adjacent to the cavity, and the side walls of the cover body are externally fitted on the necking structure so that the cover body and the box body are aligned in the lateral direction.

[0016] Preferably, a first sunken groove and a second sunken groove are provided on the end wall of the cover body, and a handle is installed in each of the first sunken groove and the second sunken groove. The handle can be sunk into or pulled out of the corresponding first sunken groove or second sunken groove.

[0017] Preferably, the battery outer box of the present invention also includes a transverse reinforcement structure and a support structure, wherein the support structure is respectively fixed on the two opposite side walls of the box body, the transverse reinforcement structure is placed horizontally in the accommodating cavity and adjacent to the cavity opening, and the end of the transverse reinforcement structure is fixedly connected to the support structure.

[0018] Preferably, the supporting structure includes a base body arranged side by side and separated from the side wall of the box body, and a stacked body arranged on opposite sides of the base body and fixedly stacked with the side wall of the box body. An intermediate connecting body is connected between the stacked body and the base body. A suspension body is bent out from the base body and is located between the stacked bodies and is fixedly connected to the transverse reinforcement structure; the transverse reinforcement structure is in the shape of a "door". BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a three-dimensional diagram of the battery outer box of the present invention with the handle in a sunken state.

[0020] Figure 2 yes Figure 1 The three-dimensional exploded view of the battery box is shown.

[0021] Figure 3 yes Figure 2 Exploded three-dimensional diagram from another angle.

[0022] Figure 4 yes Figure 1Floor plan viewed from top to bottom.

[0023] Figure 5 It is along Figure 4 Internal view cut along line AA.

[0024] Figure 6 It is a three-dimensional diagram of the supporting structure and the transverse reinforcement structure in the battery outer box of the present invention when assembled together.

[0025] Figure 7 yes Figure 6 A three-dimensional diagram of the supporting structure in the .

[0026] Figure 8 yes Figure 7 A three-dimensional image from another angle.

[0027] Figure 9 It is a three-dimensional diagram of the connector in the battery outer box of the present utility model. DETAILED DESCRIPTION

[0028] Embodiments of the present invention will now be described with reference to the accompanying drawings, wherein like reference numerals represent like elements throughout the drawings.

[0029] Please refer to Figures 1 to 5 The battery outer box 100 of the present invention includes a box body 10 having a receiving cavity 11, a cover body 20 covering the box body 10 to close the cavity opening 111 of the receiving cavity 11, and a connecting piece 30 located in the receiving cavity 11 and adjacent to the cavity opening 111.

[0030] The side wall 21 of the cover 20 is provided with a first through hole 211. Figure 2 and Figure 3 As an example, all side walls 21 of the cover body 20 are provided with first through holes 211. Obviously, according to actual needs, both opposite side walls 21 of the cover body 20 can also be provided with first through holes 211, or both adjacent side walls 21 of the cover body 20 can be provided with first through holes 211. Figure 2 and Figure 3 Limits shown.

[0031] At the same time, the side wall 12 of the box body 10 is provided with a second through hole 121 aligned with the first through hole 211. Figure 2 and Figure 3 As an example, all side walls 12 of the box body 10 are provided with second through holes 121 to ensure that the second through holes 121 on each side wall 12 of the box body 10 are aligned with the first through holes 211 on a corresponding side wall 21 of the cover body 20 .

[0032] The connector 30 is sealed with the side wall 12 of the box body 10 to ensure that the connection between the connector 30 and the side wall 12 of the box body 10 is sealed; a blind hole 31 is provided in the connector 30 to align with the second through hole 121 and is connected to the second through hole 121. An internal thread 311 is provided on the wall of the blind hole 31 to ensure that the operator can use screws to thread the connector 30 from the outside of the cover body 20, thereby achieving the purpose of locking the cover body 20 and the box body 10 together. Specifically, Figure 5 As an example, the connector 30 is sealed and welded to the side wall 12 of the box body 10, so that the connector 30 is reliably fixed to the side wall 12 of the box body 10. Since the connector 30 and the side wall 12 of the box body 10 are sealed and welded, the end surface 312 of the connector 30 is fully welded to the side wall 12 of the box body 10 (i.e., uninterrupted welding). More specifically, as follows:

[0033] like Figure 2 and Figure 3 As shown, as an example, since all side walls 21 of the cover body 20 are provided with a first through hole 211, and each first through hole 211 corresponds to a second through hole 121, correspondingly, each second through hole 121 corresponds to a connecting member 30; this design increases the locking reliability between the cover body 20 and the box body 10.

[0034] like Figure 3 and Figure 5 As shown in FIG. 1 , as an example, a sealing strip 22 is provided on the cover 20 for sealing the opening 11 of the accommodating cavity 11 , and the joint between the cover 20 and the box body 10 is sealed with the help of the sealing strip 30 , so that the battery outer box 100 of the present invention has better waterproof effect and safety. Figure 3 As an example, the sealing strip 22 is annular and fixed to the end wall 23 of the cover 20. The sealing strip 22 is used to abut against the end face 13 of the box body 10 that is penetrated by the cavity 111. Figure 5 As shown; this can further improve the waterproof effect and safety of the battery outer box 100 of the present utility model, and effectively avoid damage to the sealing strip 22.

[0035] like Figure 2 、 Figure 3 and Figure 5As shown, as an example, the side walls 12 of the box body 10 are fully welded (i.e., continuously welded) to prevent gaps between the side walls 12 of the box body 10. This not only further improves the structural strength of the box body 10, but also further enhances the waterproof performance of the box body 10. In addition, all side walls 12 of the box body 10 have an inwardly concave neck structure 122 adjacent to the cavity 111. In this case, the side wall 21 of the cover body 20 is externally mounted on the neck structure 122, so that the cover body 20 and the box body 10 are laterally aligned, thereby making the appearance of the cover body 20 and the box body 10 more consistent.

[0036] like Figure 1 and Figure 2 As shown, as an example, a first sunken groove 25 and a second sunken groove 26 are provided on the end wall 24 of the cover body 20, and a handle 27 is installed in each of the first sunken groove 25 and the second sunken groove 26. The handle 27 can be sunk into or pulled out of the corresponding first sunken groove 25 or second sunken groove 26; this design makes it easy for the operator to perform a two-handed extraction operation on the battery outer box 100 of the present invention, thereby making it easy for the operator to lift and place the battery outer box 100 of the present invention.

[0037] like Figure 2 As shown, as an example, the battery outer box 100 of the present invention further includes a transverse reinforcement structure 40 and a support structure 50. The support structure 40 is respectively fixed on the two opposite side walls 12 of the box body 10, the transverse reinforcement structure 40 is transversely placed in the accommodating cavity 11 and is adjacent to the cavity opening 11, and the end of the transverse reinforcement structure 40 is fixedly connected to the support structure 50; such a design can prevent the front, back, left and right deformation of the box body 10, thereby improving the ability of the battery outer box 100 of the present invention to resist extrusion or collision deformation; in addition, since the transverse reinforcement structure 40 is transversely placed in the accommodating cavity 11 and is adjacent to the cavity opening 11, on the one hand, it can provide support for the cover body 20; on the other hand, it can reduce the amount of the transverse reinforcement structure 40 occupying the accommodating cavity 11 of the box body 10, thereby providing sufficient space for the storage of the lithium battery module in the box body 10. Specifically, in Figure 2 、 Figure 6 、 Figure 7 and Figure 8In the figure, as an example, the support structure 50 includes a base 51 separated from the side wall 12 of the box body 10 and arranged side by side, and a stacking body 52 arranged on two sides opposite to the base 51 and stacked and fixed with the side wall 12 of the box body 10; an intermediate connecting body 53 is connected between the stacking body 52 and the base 51, and a suspension body 54 is bent on the base 51 and located between the stacking bodies 52 for the transverse reinforcement structure 40 to be fixedly connected, so as to offset the transverse reinforcement structure 40 inward relative to the side wall 12 of the box body 10 by means of the stacking and fixing of the two stacking bodies 52 and the side wall 12 of the box body 10, and the side-by-side separation arrangement between the base 51 and the side wall 12 of the box body 10, thereby providing sufficient operating space for the fixed connection between the transverse reinforcement structure 40 and the support structure 50; in addition, the transverse reinforcement structure 40 is in the shape of a "door" to facilitate the transverse arrangement of the transverse platform structure 40.

[0038] Compared with the prior art, the design of "the connector 30 is sealed with the side wall 12 of the box body 10, a blind hole 31 is provided in the connector 30 and is aligned with and connected to the second through hole 121, and an internal thread 311 is provided on the hole wall of the blind hole 31" can prevent water from entering through the screw hole, effectively improving the waterproof effect of the battery outer box 100 of the present invention.

[0039] It is worth noting that although Figure 4 The outer contours of the projections of the box body 10 and the cover body 20 from top to bottom are shown as rectangles; obviously, according to actual needs, the outer contours of the projections of the box body 10 and the cover body 20 from top to bottom can also be regular polygons or circles, etc., so it is not necessary to Figure 4 Limits shown.

[0040] The above disclosure is only a preferred embodiment of the present invention, and certainly cannot be used to limit the scope of rights of the present invention. Therefore, equivalent changes made according to the scope of the patent application of the present invention are still within the scope covered by the present invention.

Claims

1. A battery outer box, comprising a box body having a receiving cavity and a cover body covering the box body to close the cavity opening of the receiving cavity, wherein a first through hole is formed in a side wall of the cover body, and a second through hole is formed in a side wall of the box body aligned with the first through hole, characterized in that: The battery outer box also includes a connector located in the accommodating cavity and adjacent to the cavity opening, the connector is sealed with the side wall of the box body, a blind hole is provided in the connector and is aligned with the second through hole and connected, and an internal thread is provided on the hole wall of the blind hole.

2. The battery box according to claim 1, characterized in that: The connecting piece is sealed and welded to the side wall of the box.

3. The battery box according to claim 1, characterized in that: All side walls of the cover body are provided with the first through holes, each of the first through holes corresponds to one of the second through holes, and each of the second through holes corresponds to one of the connecting members.

4. The battery box according to claim 1, characterized in that: The cover body is provided with a sealing strip for sealing the cavity opening of the accommodating cavity.

5. The battery box according to claim 4, characterized in that: The sealing strip is annular and fixed on the end wall surface of the cover body. The sealing strip is used to abut and cooperate with the end surface of the box body penetrated by the cavity.

6. The battery box according to claim 1, characterized in that: The side walls of the box body are fully welded to each other.

7. The battery box according to claim 1, characterized in that: All side walls of the box body have an inwardly concave neck structure at a position adjacent to the cavity, and the side walls of the cover body are sheathed on the neck structure so that the cover body and the box body are aligned in the lateral direction.

8. The battery box according to claim 1, characterized in that: The end wall of the cover body is provided with a first sunken groove and a second sunken groove, and a handle is respectively installed in the first sunken groove and the second sunken groove. The handle can be sunk into or pulled out of the corresponding first sunken groove or second sunken groove.

9. The battery box according to claim 1, characterized in that: It also includes a transverse reinforcement structure and a support structure, wherein the support structure is respectively fixed on the two opposite side walls of the box body, the transverse reinforcement structure is placed horizontally in the accommodating cavity and adjacent to the cavity opening, and the end of the transverse reinforcement structure is fixedly connected to the support structure.

10. The battery box according to claim 9, characterized in that: The supporting structure includes a base body separated from the side wall of the box body and arranged side by side, and a stacked body arranged on opposite sides of the base body and fixedly stacked with the side wall of the box body. An intermediate connecting body is connected between the stacked body and the base body. A suspension body is bent out from the base body and is located between the stacked bodies and is fixedly connected to the transverse reinforcement structure; the transverse reinforcement structure is in the shape of a "door".

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