High-rigidity sealed battery box body

Abstract

The utility model relates to a high-rigidity sealed battery box body and belongs to the technical field of battery box body manufacturing. The box body middle frame structure comprises a box body middle frame, the box body middle frame comprises a middle frame plate body and two ribs, the two ribs are arranged in parallel in the length direction of the middle frame plate body, and pre-cutting openings are formed in the ribs and used for bending the middle frame plate body; the box body cover plate is arranged at the top of the box body middle frame and is matched and sealed with the rib positioned at the upper part; the box body bottom plate is arranged at the bottom of the box body middle frame and is matched and sealed with the rib positioned below; and the battery cell is arranged in the battery box body structure. According to the utility model, the box body middle frame, the box body cover plate and the box body bottom plate are matched with the sealing step to form the battery box body, and the two ribs on the box body middle frame not only can enhance the rigidity of the box body, but also can be used as the sealing step to be connected with the cover plate and the bottom plate to finish surface sealing and improve the sealing property.

Description

Technical Field

[0001] This utility model relates to the field of battery box manufacturing technology, and in particular to a high-rigidity sealed battery box. Background Technology

[0002] With the development of technology in the field of battery box manufacturing, sheet metal bending and welding technologies for battery box structures have emerged. However, this processing method still has some problems in practical applications:

[0003] (1) The number of bending operations is high, and the processing complexity is high;

[0004] (2) Sheet metal cutting generates a lot of waste and has a low raw material utilization rate;

[0005] (3) The welding volume is large, the welding cost is high, the risk of welding thermal deformation is high, the welding precision is insufficient, and the aesthetics of the weld are insufficient.

[0006] (4) The sealing function is difficult to achieve and not economical, and has significant limitations.

[0007] Therefore, in order to solve the above problems, it is necessary for society to develop a high-rigidity sealed battery box. Utility Model Content

[0008] To address the shortcomings of the existing production technology, the applicant provides a high-rigidity sealed battery housing, thereby giving the battery housing high structural rigidity and good sealing performance.

[0009] The technical solution adopted in this utility model is as follows: A high-rigidity sealed battery box, comprising:

[0010] The box frame includes a frame plate and two ribs. The two ribs are parallel to each other along the length of the frame plate, and a pre-cutting notch is provided on the rib for bending the frame plate.

[0011] The box cover is located at the top of the box frame and is sealed in conjunction with the upper rib;

[0012] The bottom plate of the enclosure is located at the bottom of the middle frame of the enclosure and is sealed in conjunction with the rib located below it;

[0013] The battery cells are located inside the battery housing structure.

[0014] As a further improvement to the above technical solution:

[0015] Preferably, the middle frame plate is bent to form a surrounding frame structure, and the remaining parts of the two ribs after bending respectively form an upper sealing step and a lower sealing step. The upper sealing step cooperates with the box cover plate to form a surface seal, and the lower sealing step cooperates with the box bottom plate to form a surface seal, thereby achieving overall sealing of the battery box.

[0016] Preferably, the side of the box cover and the box bottom plate that contacts the sealing step is provided with a sealing groove or sealing strip that matches the sealing step, so as to enhance the sealing performance of the box.

[0017] Preferably, the battery box structure is formed by a box cover, a box frame, and a box bottom plate.

[0018] Preferably, the inner frame of the box is formed by multiple bending and wrapping, and welded to close the joint at the end to form a weld.

[0019] Preferably, the pre-cut opening is located at the bending point of the middle frame plate to ensure that the middle frame plate can deform during bending.

[0020] Preferably, the number of the battery cells is set to at least one.

[0021] The beneficial effects of this utility model are as follows:

[0022] This utility model has a compact structure and is easy to assemble. It uses aluminum extrusion molding, and the aluminum extrusion molding substrate has two ribs, one above the other. After partially cutting and removing the ribs near the bending position, the battery box frame is formed. The two ribs can serve as sealing edges of the battery box frame. After locking with the upper and lower cover plates, a surface seal is achieved, ensuring the sealing line of the box. In addition, the two ribs can also increase the rigidity of the battery box itself. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0024] Figure 2 This is a schematic diagram of the inner frame structure of the box body of this utility model.

[0025] Figure 3 This is a schematic diagram of the box frame of this utility model in its unfolded state. (The pre-cut opening is not shown.)

[0026] Figure 4 This is a schematic diagram of the box frame of this utility model in a bent state.

[0027] The components include: 1. Box cover plate; 2. Box middle frame; 3. Battery cell; 4. Box bottom plate; 5. Welds;

[0028] 201. Mid-frame plate; 202. Rib; 203. Pre-cut opening. Detailed Implementation

[0029] The specific embodiments of this utility model are described below with reference to the accompanying drawings.

[0030] To facilitate understanding of this utility model, a more complete description will be given below with reference to the accompanying drawings. Preferred embodiments of this utility model are shown in the drawings. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure of this utility model.

[0031] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0032] When using the terms “including,” “having,” and “comprising” as described herein, another component may be added unless explicitly qualifying terms such as “only,” “consisting of,” etc. are used. Unless otherwise stated, singular terms may include plural forms and should not be construed as having a quantity of one.

[0033] It should be understood that although the terms "first," "second," etc., may be used herein to describe various elements, these elements should not be limited by these terms. These terms are used only to distinguish one element from another. For example, without departing from the scope of this invention, a first element may be referred to as a second element, and similarly, a second element may be referred to as a first element.

[0034] Furthermore, the accompanying drawings are not drawn to a 1:1 scale, and the relative dimensions of the components are shown in the drawings only as examples and not necessarily to actual scale.

[0035] like Figure 1 The figure shows a schematic diagram of the structure of a high-rigidity sealed battery box according to an embodiment of the present invention; for ease of description, the figure only shows the structure related to the embodiment of the present invention.

[0036] In this embodiment, a high-rigidity sealed battery box is provided, including a box cover plate 1, a box middle frame 2, and a box bottom plate 4. The box cover plate 1, the box middle frame 2, and the box bottom plate 4 together form a closed battery box structure for accommodating and protecting the battery cells 3.

[0037] Combination Figures 2-4 The diagram shows a schematic representation of the structure of the box frame 2 in one embodiment of the present invention. In some embodiments, the box frame 2 includes a frame plate 201 and two ribs 202; the two ribs 202 are arranged parallel to each other along the length of the frame plate 201 to enhance the rigidity of the box.

[0038] Among them, the middle frame plate 201 is the main body of the middle frame 2 of the box. It forms a surrounding frame structure by bending. During the bending process, the middle frame plate 201 deforms at the pre-cut opening 203 position on the rib 202 to form a frame shape.

[0039] Ribs 202: Ribs 202 are installed on the upper and lower sides of the middle frame plate 201 to increase the rigidity of the box. Pre-cutouts 203 are provided on the ribs 202, positioned at the bending point of the middle frame plate 201 to ensure smooth deformation during bending. After bending, the remaining portions of the two ribs 202 form the upper sealing step and the lower sealing step, respectively.

[0040] In some embodiments, the upper part of the battery box is sealed: the box cover plate 1 is disposed on the top of the box frame 2 and cooperates with the upper rib 202 (i.e., the upper sealing step) for sealing. To achieve a better sealing effect, a sealing groove or sealing strip matching the sealing step can be provided on the side of the box cover plate 1 that contacts the upper sealing step.

[0041] In some embodiments, the lower part of the battery box is sealed: the bottom plate 4 of the box is located at the bottom of the middle frame 2 of the box and cooperates with the rib 202 (i.e., the lower sealing step) located below to seal. Similarly, in order to enhance the sealing performance, a sealing groove or sealing strip matching the sealing step can also be provided on the side of the bottom plate 4 that contacts the lower sealing step.

[0042] In some embodiments, the middle frame 2 of the box is formed by bending and circling multiple times, and then welded to close the joint at the end to form a weld 5. In the end, the middle frame 2, the box cover plate 1, and the box bottom plate 4 together form a closed battery box structure to accommodate the battery cell 3.

[0043] In some embodiments, the number of battery cells 3 may be set to at least one, depending on actual needs.

[0044] In summary, this utility model has a reasonable structure and is easy to assemble. Through the bending and welding process of the inner frame 2 of the box, as well as the sealing cooperation between the box cover plate 1 and the box bottom plate 4, the rapid assembly and compact structure of the battery box are achieved. By setting two ribs 202, the rigidity of the battery box is effectively increased and the deformation resistance of the box is improved. At the same time, the two ribs 202 also serve as sealing steps, which are used to cooperate with the box cover plate 1 and the box bottom plate 4 respectively to form a surface seal, ensuring the airtightness of the battery box and effectively preventing the leakage of internal battery materials and the intrusion of external materials.

[0045] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0046] The embodiments described above merely illustrate the implementation of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A high-rigidity sealed battery case, characterized in that, include: The box frame (2) includes a frame plate (201) and two ribs (202). The two ribs (202) are arranged parallel to each other along the length of the frame plate (201), and a pre-cutting opening (203) is provided on the ribs (202) for bending the frame plate (201). The box cover (1) is set on the top of the box frame (2) and is sealed with the upper rib (202); The bottom plate (4) of the box is set at the bottom of the middle frame (2) of the box and is sealed with the rib (202) located below it; The battery cell (3) is located inside the battery housing structure.

2. The high-rigidity sealed battery casing as described in claim 1, characterized in that, The middle frame plate (201) is bent to form a surrounding frame structure, and the remaining parts of the two ribs (202) after bending form an upper sealing step and a lower sealing step, respectively. The upper sealing step cooperates with the box cover plate (1) to form a surface seal, and the lower sealing step cooperates with the box bottom plate (4) to form a surface seal, thereby achieving overall sealing of the battery box.

3. The high-rigidity sealed battery case as described in claim 2, characterized in that, The cover plate (1) and bottom plate (4) of the enclosure are provided with sealing grooves or sealing strips that match the sealing steps on the side that contacts the sealing steps, so as to enhance the sealing performance of the enclosure.

4. The high-rigidity sealed battery case as described in claim 1, characterized in that, The battery box structure is formed by the box cover plate (1), the box middle frame (2) and the box bottom plate (4).

5. The high-rigidity sealed battery case as described in claim 1, characterized in that, The inner frame (2) of the box is formed by bending and wrapping multiple times, and welded and closed at the end to form a weld (5).

6. The high-rigidity sealed battery case as described in claim 1, characterized in that, The pre-cut opening (203) is positioned at the bending point of the middle frame plate (201) to ensure that the middle frame plate (201) can deform during bending.

7. The high-rigidity sealed battery case as described in claim 1, characterized in that, The number of the battery cells (3) is set to at least one.

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