Battery module sheet metal box body

Abstract

The utility model relates to a battery module sheet metal box body, which comprises a box body, a box cover and screws, the box body is provided with a cavity with an upward opening, the side wall of the box body close to the opening end is provided with a threaded hole, and the cavity is used for installing a battery module; the box cover covers the opening, the periphery of the box cover is bent downwards to form a mounting part, the mounting part is located on the periphery of the side wall of the box body, a through hole corresponding to the threaded hole is formed in the mounting part in a penetrating mode, a sealing cavity communicated with the through hole is formed in the inner side of the mounting part, and the lower end of the sealing cavity is open. The side wall of the box body extends into the sealing cavity, and sealant is injected into the sealing cavity; and the screw penetrates through the through hole and is in threaded fit with the box body. According to the utility model, the utilization rate of the maximum space of the box body can be kept, and meanwhile, the direct material cost and the overall weight of the product cannot be increased too much.

Description

Technical Field

[0001] The utility model relates to the technical field of battery boxes, in particular to a battery module sheet metal box. Background Art

[0002] In order to achieve the maximum energy output of the battery, most batteries nowadays complete their energy supply in the form of a battery box. The battery box is equipped with a battery module. In order to prevent the battery module from short-circuiting, the battery box has waterproof properties.

[0003] Patent CN111740039A discloses a battery case, which includes a case, a cover plate, a sealing gasket and a connecting assembly, wherein the sealing gasket is sandwiched between the case and the cover plate, and the connecting assembly passes through the case, the sealing gasket and the cover plate, and the connecting assembly includes a nut and a screw, wherein the nut is fixed to the case, and the screw and the nut cooperate to fix the cover plate to the case, and the nut includes a supporting portion, which is supported between the case and the cover plate, wherein the thickness of the supporting portion is less than the initial thickness of the sealing gasket, and the compression of the sealing gasket is limited during the process of locking the case and the cover plate.

[0004] However, in the above-mentioned prior art, the box body and the cover plate are bent outward to form flanges to place the sealing gasket, and the sealing effect is achieved through the sealing gasket. However, due to the limited space in the vehicle, the flanges of the box body and the cover plate occupy the effective space of the entire system, resulting in reduced internal space utilization of the battery box. Utility Model Content

[0005] In view of this, it is necessary to provide a battery module sheet metal box to solve the problem in the prior art that the box and the cover are bent outward to form flanges to place the sealing gasket, and the sealing effect is achieved through the sealing gasket. However, due to the limited space in the vehicle, the flanges of the box and the cover occupy the effective space of the entire system, resulting in a technical problem in which the internal space utilization of the battery box is reduced.

[0006] The utility model provides a battery module sheet metal box, the battery module sheet metal box comprising:

[0007] The box body has a cavity with an opening facing upward, and a threaded hole is provided on the side wall of the box body near the opening end;

[0008] A box cover is arranged at the opening, the peripheral edge of the box cover is bent downward to form a mounting portion, the mounting portion is located at the outer periphery of the box body side wall, the mounting portion is penetrated by a through hole corresponding to the threaded hole, the inner side of the mounting portion is provided with a sealing cavity connected to the through hole, the lower end of the sealing cavity is open, and the box body side wall extends into the sealing cavity, and the sealing cavity is used to inject sealant; and

[0009] A screw is passed through the through hole and matched with the thread of the box body.

[0010] In some embodiments, the battery module sheet metal box also includes a mounting plate, which is arranged on the inner side of the mounting portion, and one end of the mounting plate away from the mounting portion is bent downward to form a bent portion, and the mounting plate and the mounting portion together enclose the sealed cavity.

[0011] In some embodiments, the lower end of the bending portion is higher than the lower end of the mounting portion.

[0012] In some embodiments, the upper end of the side wall of the box body is inwardly contracted to form a connecting portion, the threaded hole is located in the connecting portion, the mounting portion is located at the periphery of the connecting portion, and the size of the mounting portion is adapted to the size of the connecting portion.

[0013] In some embodiments, the distance from the threaded hole to the upper end surface of the connecting portion is smaller than the depth of the sealing cavity.

[0014] In some embodiments, when the box cover is disposed on the opening, the outer side surface of the box cover is flush with the outer side surface of the box body.

[0015] In some embodiments, the side wall of the box body is provided with a through hole;

[0016] The battery module sheet metal box also includes a nut, which is arranged on the inner side of the box side wall and corresponds to the through hole, and the nut constitutes the threaded hole.

[0017] In some embodiments, there are multiple threaded holes and multiple through holes, and the multiple threaded holes are arranged at intervals along the circumference of the box body. The multiple through holes and the multiple threaded holes correspond one-to-one. There are multiple screws, and the multiple screws correspond one-to-one to the multiple threaded holes.

[0018] In some embodiments, the sealing cavity is arranged in a complete circle around the mounting portion.

[0019] In some embodiments, the outer side of the box cover is also provided with a charging and discharging interface and a handle.

[0020] Compared with the prior art, the utility model provides a battery module sheet metal box, the box has a cavity with an opening facing upward, the box side wall is provided with a threaded hole near the opening end, the box cover is arranged at the opening, the peripheral edge of the box cover is bent downward to form a mounting portion, the mounting portion is located at the outer periphery of the box side wall, the mounting portion is penetrated by a through hole corresponding to the threaded hole, the inner side of the mounting portion is provided with a sealed cavity connected to the through hole, the lower end of the sealed cavity is open, so that when the box cover is provided with the opening, the box side wall extends into the sealed cavity, the screw passes through the through hole and cooperates with the box thread, and the specific use When installing the box cover, first turn the box cover upward and inject sealant into the sealing cavity. Then turn the box body over and buckle it on the box body so that the side wall of the box body extends into the sealing cavity. At this time, the through hole corresponds to the threaded hole and is connected to the sealing cavity. Finally, the screw is screwed to the box body from the outside, and one end extends into the sealant of the sealing cavity. The threaded hole is sealed by the sealant to achieve a waterproof effect. After the sealant is cured, turn the box body over and put it upright. This setting can retain the maximum space utilization of the box body without increasing too much direct material cost and the overall weight of the product.

[0021] The above description is only an overview of the technical solution of the utility model. In order to more clearly understand the technical means of the utility model and implement it according to the contents of the specification, the preferred embodiment of the utility model is described in detail as follows with the accompanying drawings. The specific implementation method of the utility model is given in detail by the following embodiments and their drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0023] Figure 1 A schematic structural diagram of an embodiment of a battery module sheet metal box provided by the utility model;

[0024] Figure 2 for Figure 1 A partial cross-sectional view of the sheet metal box of the middle battery module;

[0025] Figure 3 for Figure 1 A three-dimensional schematic diagram of the middle box;

[0026] Figure 4 for Figure 1 Schematic diagram of the middle box cover.

[0027] Description of reference numerals:

[0028] 1-box body, 11-connecting part, 111-through hole, 12-nut, 2-box cover, 21-installation part, 211-through hole, 212-sealed cavity, 22-mounting plate, 221-bending part, 23-charging and discharging interface, 24-handle, 3-screw. DETAILED DESCRIPTION

[0029] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings, wherein the accompanying drawings constitute a part of the present application and are used together with the embodiments of the present invention to illustrate the principles of the present invention, but are not used to limit the scope of the present invention.

[0030] See also Figures 1 to 4 The sheet metal box of the battery module comprises a box 1, a box cover 2 and a screw 3, wherein the box 1 has a cavity with an opening facing upward, and a threaded hole is provided on the side wall of the box 1 near the opening end, and the cavity is used for installing the battery module; the box cover 2 is provided at the opening, and the peripheral edge of the box cover 2 is bent downward to form a mounting portion 21, and the mounting portion 21 is located at the outer periphery of the side wall of the box 1, and a through hole 211 corresponding to the threaded hole is penetrated by the mounting portion 21, and a sealing cavity 212 communicating with the through hole 211 is provided on the inner side of the mounting portion 21, and the lower end of the sealing cavity 212 is open, so that when the box cover 2 covers the opening, the side wall of the box 1 extends into the sealing cavity 212, and the sealing cavity 212 is used for injecting sealant; the screw 3 penetrates the through hole 211 and is threadedly matched with the box 1.

[0031] The utility model provides a battery module sheet metal box, the box 1 has a cavity with an opening facing upward, the side wall of the box 1 is provided with a threaded hole near the opening end, the box cover 2 is provided at the opening, the peripheral edge of the box cover 2 is bent downward to form a mounting portion 21, the mounting portion 21 is located at the outer periphery of the side wall of the box 1, the mounting portion 21 is penetrated by a through hole 211 corresponding to the threaded hole, the inner side of the mounting portion 21 is provided with a sealed cavity 212 connected to the through hole 211, the lower end of the sealed cavity 212 is open, so that when the box cover 2 covers the opening, the side wall of the box 1 extends into the sealed cavity 212, the screw 3 penetrates the through hole 211 and cooperates with the box 1 thread, specifically When in use, firstly, the box cover 2 is turned up and set upward, and sealant is injected into the sealing cavity 212, then the box body 1 is turned over and buckled on the box body 1, so that the side wall of the box body 1 extends into the sealing cavity 212. At this time, the through hole 211 corresponds to the threaded hole and is connected to the sealing cavity 212. Finally, the screw 3 is screwed to the box body 1 from the outside, and one end extends into the sealant of the sealing cavity 212. The threaded hole is sealed by the sealant to achieve a waterproof effect. After the sealant is cured, the box body 1 is turned over and placed upright. Such a setting can retain the maximum space utilization of the box body 1 without increasing too much direct material cost and the overall weight of the product.

[0032] Furthermore, in this embodiment, the battery module sheet metal box also includes a mounting plate 22, and the mounting plate 22 is arranged on the inner side of the mounting portion 21. One end of the mounting plate 22 away from the mounting portion 21 is bent downward to form a bending portion 221. The mounting plate 22 and the mounting portion 21 together enclose the sealed cavity 212.

[0033] Furthermore, there is no limitation on the connection method between the mounting plate 22 and the mounting portion 21. In the present embodiment, the mounting plate 22 and the mounting portion 21 are connected by welding, which is convenient for production and manufacturing.

[0034] Furthermore, in order to prevent the bending portion 221 from occupying too much space in the box body 1, in this embodiment, the lower end of the bending portion 221 is higher than the lower end of the mounting portion 21. This arrangement prevents the bending portion 221 from protruding downward and extending into the space in the box body 1, thereby preventing the bending portion 221 from occupying space in the box body 1.

[0035] Furthermore, the upper end of the side wall of the box body 1 is inwardly contracted to form a connecting portion 11, the threaded hole is located at the connecting portion 11, the mounting portion 21 is located at the periphery of the connecting portion 11, and the size of the mounting portion 21 is adapted to the size of the connecting portion 11.

[0036] Furthermore, in order to avoid interference, in this embodiment, the distance from the threaded hole to the upper end surface of the connecting portion 11 is smaller than the depth of the sealing cavity 212 .

[0037] Furthermore, when the box cover 2 is placed on the opening, the outer side of the box cover 2 is flush with the outer side of the box body 1. This arrangement makes the entire battery box body 1 beautiful in appearance and prevents the box cover 2 from protruding.

[0038] Furthermore, the side wall of the box body 1 is provided with a through hole 111; the battery module sheet metal box body further includes a nut 12, which is arranged on the inner side of the side wall of the box body 1 and corresponds to the through hole 111, and the nut 12 constitutes the threaded hole. Such an arrangement is convenient for production.

[0039] There is no limitation on the connection method between the nut 12 and the box body 1. In the present embodiment, the nut 12 and the box body 1 are connected by welding.

[0040] Furthermore, in order to improve the connection strength between the box cover 2 and the box body 1, in the present embodiment, the threaded hole and the through hole 211 are both provided in plurality, the plurality of threaded holes are arranged at intervals along the circumference of the box body 1, the plurality of through holes 211 and the plurality of threaded holes correspond one-to-one, and the screws 3 are provided in plurality, and the plurality of screws 3 correspond one-to-one to the plurality of threaded holes.

[0041] Furthermore, since there are multiple threaded holes and multiple through holes 211, and the multiple threaded holes are arranged at intervals along the circumference of the box body 1, in this embodiment, the sealing cavity 212 is arranged in a full circle around the mounting portion 21. In this way, the sealing cavity 212 can be connected to the multiple through holes 211, thereby achieving the purpose of sealing the multiple threaded holes.

[0042] Furthermore, a charging and discharging interface 23 and a handle 24 are also provided on the outer side of the box cover 2 .

[0043] In the description of this application, it should be noted that when there are directional indications (such as up, down, left, right, front, back...), the directional indications are only used to explain the relative position relationship, movement, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly. Unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" 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, and it can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0044] It should be noted that, in the present application, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply that there is any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or equipment. In the absence of more restrictions, the elements defined by the sentence "including one..." do not exclude the existence of other identical elements in the process, method, article or equipment including the elements. In addition, the meaning of "and / or" appearing in the full text includes three parallel schemes, taking "A and / or B" as an example, including scheme A or scheme B or schemes that A and B meet simultaneously. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the fact that ordinary technicians in the field can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0045] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by any technician familiar with the technical field within the technical scope disclosed in the present invention should be included in the protection scope of the present invention.

Claims

1. A battery module sheet metal box, characterized in that: It includes: The box body has a cavity with an opening facing upward, and a threaded hole is provided on the side wall of the box body near the opening end; A box cover is arranged at the opening, the peripheral edge of the box cover is bent downward to form a mounting portion, the mounting portion is located at the outer periphery of the box body side wall, the mounting portion is penetrated by a through hole corresponding to the threaded hole, the inner side of the mounting portion is provided with a sealing cavity connected to the through hole, the lower end of the sealing cavity is open, and the box body side wall extends into the sealing cavity, and the sealing cavity is used to inject sealant; and A screw is passed through the through hole and matched with the thread of the box body.

2. The battery module sheet metal box according to claim 1, characterized in that: The battery module sheet metal box also includes a mounting plate, which is arranged on the inner side of the mounting portion. One end of the mounting plate away from the mounting portion is bent downward to form a bent portion, and the mounting plate and the mounting portion together enclose the sealed cavity.

3. The battery module sheet metal box according to claim 2, characterized in that: The lower end of the bending portion is higher than the lower end of the mounting portion.

4. The battery module sheet metal box according to claim 1, characterized in that: The upper end of the side wall of the box body is inwardly contracted to form a connecting portion, the threaded hole is located in the connecting portion, the mounting portion is located at the outer periphery of the connecting portion, and the size of the mounting portion is adapted to the size of the connecting portion.

5. The battery module sheet metal box according to claim 4, characterized in that: The distance from the threaded hole to the upper end surface of the connecting portion is smaller than the depth of the sealing cavity.

6. The battery module sheet metal box according to claim 4, characterized in that: When the box cover is arranged on the opening, the outer side surface of the box cover is flush with the outer side surface of the box body.

7. The battery module sheet metal box according to claim 1, characterized in that: The side wall of the box body is provided with a through hole; The battery module sheet metal box also includes a nut, which is arranged on the inner side of the box side wall and corresponds to the through hole, and the nut constitutes the threaded hole.

8. The battery module sheet metal box according to claim 1, characterized in that: There are multiple threaded holes and multiple through holes, and the multiple threaded holes are arranged at intervals along the circumference of the box body. The multiple through holes correspond to the multiple threaded holes one by one. There are multiple screws, and the multiple screws correspond to the multiple threaded holes one by one.

9. The battery module sheet metal box according to claim 8, characterized in that: The sealing cavity is arranged in a complete circle around the mounting portion.

10. The battery module sheet metal box according to claim 1, characterized in that: The outer side of the box cover is also provided with a charging and discharging interface and a handle.

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