Frame of lower box body of battery

Abstract

The utility model discloses a frame of a lower box body of a battery. The frame comprises a frame main body and a curved surface piece, the frame main body is provided with a weight reduction cavity and a reinforcing rib plate, the reinforcing rib plate is located in the weight reduction cavity, and the frame main body is provided with a mounting hole penetrating to the weight reduction cavity; the curved surface piece is arranged in the mounting hole and seals the mounting hole, the curved surface piece is provided with a positioning part, the positioning part is located in the weight reduction cavity and abuts against the reinforcing rib plate, and the curved surface piece is connected with the frame body in a welded mode. The reinforcing rib plate in the weight reduction cavity of the frame main body can enhance the structural strength of the frame main body, after the curved surface piece is inserted into the mounting hole of the frame main body, the positioning part directly abuts against the reinforcing rib plate in the weight reduction cavity, and the inserting depth position of the curved surface piece is supported and positioned through the reinforcing rib plate, so that when the curved surface piece is directly inserted into the mounting hole, the curved surface piece cannot be damaged. And the curved surface piece and the frame main body can be conveniently welded and fixed, so that the production efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a battery field especially relates to a battery lower box body frame. BACKGROUND

[0002] In the common electric automobile, the battery lower box body is used for bearing and protecting the battery module, and the frame part of the battery lower box body needs to match the chassis of the automobile. With the difference of the electric automobile chassis modeling, the lower box body frame can appear some curved surface modeling, so that the lower box body frame needs to be separately made after the curved surface piece, and then is welded and fixed to the mounting hole of the frame main body, to form the lower box body frame. Since the weight reduction cavity is usually arranged in the lower box body frame, the mounting hole is directly connected to the weight reduction cavity, so that the depth position of the curved surface piece inserted into the mounting hole is not accurate enough, which affects the production efficiency. SUMMARY

[0003] The utility model discloses at least one of the technical problems in the prior art. To this end, the utility model provides a battery lower box body frame, and the depth position of the curved surface piece inserted into the mounting hole is more accurate.

[0004] The battery lower box body frame according to the utility model embodiment comprises a frame main body and a curved surface piece. The frame main body is provided with a weight reduction cavity and a reinforcing rib plate, the reinforcing rib plate is located in the weight reduction cavity, and the frame main body is provided with a mounting hole connected to the weight reduction cavity. The curved surface piece is arranged in the mounting hole and closes the mounting hole. The curved surface piece is provided with a positioning part, the positioning part is located in the weight reduction cavity and abuts against the reinforcing rib plate, and the curved surface piece is welded and connected with the frame main body.

[0005] The battery lower box body frame according to the utility model embodiment has at least the following beneficial effects: the reinforcing rib plate in the weight reduction cavity of the frame main body can enhance the structural strength of the frame main body. After the curved surface piece is inserted into the mounting hole of the frame main body, the positioning part directly abuts against the reinforcing rib plate in the weight reduction cavity, and the insertion depth position of the positioning curved surface piece is supported by the reinforcing rib plate. When the curved surface piece is directly inserted into the mounting hole, the depth position can be accurately positioned, the curved surface piece and the frame main body are conveniently welded and fixed, and the production efficiency is improved.

[0006] According to some embodiments of the utility model, the frame main body is provided with at least two reinforcing rib plates, and the curved surface piece is provided with at least two positioning parts. Different positioning parts abut against different reinforcing rib plates.

[0007] According to some embodiments of the utility model, all the reinforcing rib plates are arranged along the horizontal direction and are spaced apart along the up-down direction. All the positioning parts are spaced apart along the horizontal direction. The reinforcing rib plate close to the curved surface piece is provided with a gap notch.

[0008] According to some embodiments of the present application, the curved surface part comprises a curved surface plate and two positioning portions, the curved surface plate is located in the mounting hole, the positioning portions are plate bodies and are arranged in the up-down direction, upper ends of the positioning portions are connected to end portions of the curved surface plate, and the two positioning portions are respectively connected to opposite ends of the curved surface plate.

[0009] According to some embodiments of the present application, the lower part of the positioning portion has a decreasing trend in the direction away from the curved surface plate.

[0010] According to some embodiments of the present application, the upper part of the positioning portion is clamped between opposite two side cavity walls of the weight-reducing cavity.

[0011] According to some embodiments of the present application, the frame body is provided with a surface plate, the surface plate forms part of the cavity wall of the weight-reducing cavity, the mounting hole is arranged on the surface plate, edges of the curved surface plate are butted with edges of the surface plate, and the curved surface plate and the surface plate are smoothly connected.

[0012] According to some embodiments of the present application, the positioning portion is provided with a limiting structure, an upper end of the positioning portion is abutted with the lower side of the surface plate through the limiting structure, and a lower end of the positioning portion is abutted with the reinforcing rib plate.

[0013] According to some embodiments of the present application, the limiting structure is a clamping hook, one side of the clamping hook close to the surface plate is provided with an abutting surface, the abutting surface is abutted with the surface plate, and the other side of the clamping hook away from the surface plate is provided with an insertion guide surface.

[0014] According to some embodiments of the present application, part of the edges of the curved surface plate are located outside the mounting hole and are abutted with the outer surface of the frame body.

[0015] The additional aspects and advantages of the present application will be partially given in the following description, partially will become obvious from the following description, or will be understood through the practice of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0016] The above and / or additional aspects and advantages of the present application will become apparent and more readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings, in which:

[0017] Figure 1 FIG. 1 is a perspective view of a part of a battery lower box frame according to an embodiment of the present application;

[0018] Figure 2 FIG. 2 is a sectional view of the A-A direction of FIG. 1; Figure 1

[0019] Figure 3 ​The utility model discloses an embodiment of the utility model discloses a frame body Figure 1 The sectional view schematic diagram of B-B direction of the frame body of the utility model discloses an embodiment

[0020] Figure 4 The three -dimensional schematic diagram of the frame body of the utility model discloses an embodiment

[0021] Figure 5 The three -dimensional schematic diagram of the curved surface spare of the utility model discloses an embodiment

[0022] Reference signs:

[0023] Frame body 100, weight reduction cavity 110, reinforcing rib plate 120, give place gap 121, mounting hole 130, surface plate 140

[0024] Curved surface spare 200, positioning portion 210, clamping hook 211, insertion guide surface 212, guide inclined surface 213, curved surface plate 220 Specific implementation

[0025] The embodiment of the utility model is described in detail below, and the example of the embodiment is shown in the drawings, wherein the same or similar signs represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary, only for explaining the utility model, and cannot be understood as limiting the utility model.

[0026] In the description of the utility model, it is understood that the orientation description, such as the orientation or position relationship of the indication of up, down, etc. is based on the orientation or position relationship shown in the drawings, only for the convenience of describing the utility model and simplifying the description, and is not indicative or implicit of the device or element indicated must have a specific orientation, a specific orientation and operation, therefore, it cannot be understood as limiting the utility model.

[0027] In the description of the utility model, more refers to two or more. If there is a description to the first, the second is only used for distinguishing the technical features for the purpose, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of indicated technical features or implicitly indicating the sequence of indicated technical features.

[0028] In the description of the utility model, unless otherwise explicitly limited, the words such as setting, installation, connection, etc. should be broadly understood, and the person skilled in the art can reasonably determine the specific meaning of the above words in the utility model according to the specific content of the technical scheme.

[0029] Some battery lower box frame can be integrally formed by casting, but the casting is prone to have defects such as pores, and the appearance quality cannot meet the higher requirements. Therefore, the battery lower box frame is usually made by welding after profile extrusion. At present, the battery lower box frame has a weight reduction cavity 110, so that the frame is a hollow structure. In order to maintain the structural strength of the frame, a reinforcing rib plate 120 is usually made in the weight reduction cavity 110.

[0030] Referring to Figures 1 to 5 The battery lower box frame of the embodiment of the utility model, including frame main part 100 and curved surface piece 200. Frame main part 100 is provided with weight reduction cavity 110 and reinforcing rib plate 120, reinforcing rib plate 120 is located in weight reduction cavity 110, frame main part 100 is provided with the mounting hole 130 that penetrates to weight reduction cavity 110;Curved surface piece 200 is set in mounting hole 130 and closes mounting hole 130, curved surface piece 200 is provided with positioning part 210, positioning part 210 is located in weight reduction cavity 110 and abuts with reinforcing rib plate 120, curved surface piece 200 is welded with frame main part 100 and is connected.

[0031] The reinforcing rib plate 120 in the weight reduction cavity 110 of the frame main part 100 can enhance the structural strength of the frame main part 100. After the curved surface piece 200 is inserted into the mounting hole 130 of the frame main part 100, the positioning part 210 directly abuts with the reinforcing rib plate 120 in the weight reduction cavity 110, and the insertion depth position of the curved surface piece 200 is supported by the reinforcing rib plate 120. When the curved surface piece 200 is directly inserted into the mounting hole 130, the depth position can be accurately positioned. Then the curved surface piece 200 can be welded and fixed with the frame main part 100, thereby improving the production efficiency.

[0032] In the embodiment, the frame main part 100 is provided with three reinforcing rib plates 120, and the curved surface piece 200 is provided with two positioning parts 210. Different positioning parts 210 abut different reinforcing rib plates 120. By abutting the different positioning parts 210 with the different reinforcing rib plates 120, the appropriate position of the reinforcing rib plate 120 can be selected according to the shape of the curved surface piece 200. The installation depth of the curved surface piece 200 is controlled by the positioning part 210, which is relatively flexible and accurate in positioning effect, and the positioning support of the reinforcing rib plate 120 to the curved surface piece 200 is relatively firm.

[0033] It can be understood that in other embodiments, the curved surface piece 200 can have one positioning part 210, which completes depth positioning by abutting one reinforcing rib plate 120. When the size of the curved surface piece 200 is relatively long, the depth positioning can be completed by multiple positioning parts 210, such as three, four or more, which can be configured according to actual needs by those skilled in the art.

[0034] In the embodiment, all the reinforcing rib plates 120 are arranged along the horizontal direction and are arranged at intervals along the up-down direction, all the positioning portions 210 are arranged at intervals along the horizontal direction, and the reinforcing rib plate 120 close to the curved surface member 200 is provided with a gap 121. In the embodiment, the curved surface member 200 has a large change in shape, and therefore the gap 121 can avoid part of the curved surface member 200 to adapt to the change in shape of the curved surface member 200, so that the curved surface member is conveniently installed to the frame body 100, meanwhile, the upper positioning portion 210 can abut against the upper reinforcing rib plate 120, and the lower positioning portion 210 can abut against the lower reinforcing rib plate 120, so that different reinforcing rib plates 120 support the curved surface member 200 through different positioning portions 210.

[0035] In the embodiment, the curved surface member 200 includes a curved surface plate 220 and two positioning portions 210, the curved surface plate 220 is located in the mounting hole 130, and the positioning portions 210 are plate bodies and are arranged along the up-down direction, the upper end of the positioning portion 210 is connected to the end of the curved surface plate 220, and the two positioning portions 210 are connected to opposite ends of the curved surface plate 220, respectively. By connecting the positioning portions 210 to the opposite ends of the curved surface plate 220, respectively, the two positioning portions 210 abut against the reinforcing rib plates 120 to support and position the opposite ends of the curved surface plate 220, so that the overall depth of the curved surface plate 220 can be positioned, the structure is simple and easy to implement, and it is not necessary to arrange too many positioning portions 210, so that the overall structure of the curved surface member 200 is simplified.

[0036] In the embodiment, the lower part of the positioning portion 210 has a tendency to decrease in width along the direction away from the curved surface plate 220. Specifically, the lower part of the positioning portion 210 has guide inclined surfaces 213 on both sides in the width direction, so that the width of the positioning portion 210 has a tendency to decrease along the direction away from the curved surface plate 220. When the curved surface member 200 starts to be inserted into the mounting hole 130, the narrower lower end of the positioning portion 210 is inserted into the mounting hole 130 first, so that the curved surface member 200 can be inserted into the mounting hole 130 without excessive alignment, and the assembly efficiency of the curved surface member 200 and the frame body 100 is improved.

[0037] In the embodiment, the upper part of the positioning portion 210 is clamped between the opposite side cavity walls of the weight-reducing cavity 110. The opposite side cavity walls of the weight-reducing cavity 110 abut against and clamp the upper part of the positioning portion 210, so that the opposite side cavity walls of the weight-reducing cavity 110 can limit the positioning portion 210, so that the installation position of the curved surface member 200 is more accurate.

[0038] In the embodiment, the frame body 100 is provided with a surface plate 140, the surface plate 140 forms part of the cavity wall of the lightened cavity 110, the mounting hole 130 is opened in the surface plate 140, the edge of the curved plate 220 is butted with the edge of the surface plate 140, and the curved plate 220 and the surface plate 140 are smoothly transitioned. The surface plate 140 forms the outer surface of the frame body 100, the curved plate 220 also forms the outer surface of the frame, the edge of the curved plate 220 is butted with the edge of the surface plate 140, and the two are smoothly transitioned, so that the outer surface of the frame is relatively smooth and smooth, and the surface quality of the frame is relatively good.

[0039] In the embodiment, the positioning part 210 is provided with a limiting structure, the upper end of the positioning part 210 is butted with the lower side of the surface plate 140 through the limiting structure, and the lower end of the positioning part 210 is butted with the reinforcing rib plate 120. The upper end of the positioning part 210 is limited by butting the limiting structure with the surface plate 140, and the lower end of the positioning part 210 is limited by butting the reinforcing rib plate 120, so that when the curved part 200 is installed to the frame body 100, the positioning part 210 is clamped by the surface plate 140 and the reinforcing rib plate 120, the pre-assembly of the curved part 200 and the frame body 100 is relatively stable, the curved part 200 is prevented from shaking relative to the frame body 100 in the welding process, and the welding and fixing quality of the curved part 200 and the frame body 100 is improved.

[0040] In the embodiment, the limiting structure is a clamping hook 211, the side close to the surface plate 140 of the clamping hook 211 has an abutting surface, the abutting surface is butted with the surface plate 140, and the side away from the surface plate 140 of the clamping hook 211 is provided with an insertion guide surface 212. Since the positioning part 210 is a plate body and the upper end is butted with the surface plate 140, the positioning part 210 is in a approximate cantilever structure at this time and has a certain elastic deformation capacity, so the clamping hook 211 is used as the limiting structure, and the insertion guide surface 212 is arranged on the side of the clamping hook 211 away from the surface plate 140, which is beneficial to the elastic deformation of the positioning part 210 inserted into the mounting hole 130, and then the positioning part 210 resets and the abutting surface of the clamping hook 211 is butted with the surface plate 140.

[0041] It can be imagined that the limiting structure can also be other structures, for example, the limiting structure is a limiting block.

[0042] In the embodiment, part of the edge of the curved plate 220 is located outside the mounting hole 130 and butts with the outer surface of the frame body 100, which can also assist the insertion of the curved part 200 into the mounting hole 130, so that the insertion depth is relatively accurately in place, and the assembly of the frame body 100 and the curved part 200 is more accurate.

[0043] The battery lower box frame of the embodiment is manufactured by first making the curved surface piece 200 and the frame body 100 into a blank through profile extrusion, then machining the structure of splicing and assembly, and then assembling and welding the curved surface piece 200 and the frame body 100, and polishing the weld to manufacture the battery lower box frame.

[0044] In the description of the present specification, the description referring to the terms "one embodiment", "some embodiments", "exemplary embodiment", "example", "specific example", or "some examples" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the exemplary description of the above terms does not necessarily mean the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0045] Although the embodiments of the present application have been shown and described, it should be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the claims and their equivalents.

Claims

1. A battery lower case frame, characterized by, The application relates to a frame body (100) provided with a weight-reducing cavity (110) and a reinforcing rib plate (120) located in the weight-reducing cavity (110), the frame body (100) being provided with a mounting hole (130) penetrating to the weight-reducing cavity (110); a curved member (200) is arranged in the mounting hole (130) and closes the mounting hole (130), the curved member (200) is provided with a positioning part (210) located in the weight-reducing cavity (110) and abutting against the reinforcing rib plate (120), and the curved member (200) is welded to the frame body (100). The frame body (100) is provided with at least two reinforcing rib plates (120), the curved member (200) is provided with at least two positioning parts (210), and different positioning parts (210) abut against different reinforcing rib plates (120). All the reinforcing rib plates (120) are arranged along the horizontal direction and are arranged in the up-down direction at intervals, all the positioning parts (210) are arranged in the horizontal direction at intervals, and the reinforcing rib plate (120) close to the curved member (200) is provided with a gap (121).

2. The battery lower case frame according to claim 1, characterized by: The curved member (200) comprises a curved plate (220) and two positioning parts (210), the curved plate (220) is located in the mounting hole (130), the positioning parts (210) are plate bodies and are arranged in the up-down direction, the upper end of the positioning part (210) is connected to the end of the curved plate (220), and the two positioning parts (210) are connected to the opposite ends of the curved plate (220) respectively.

3. The battery lower case frame according to claim 2, characterized by: The lower part of the positioning part (210) has a narrowing trend in the direction away from the curved plate (220).

4. The battery lower case frame according to claim 1, characterized by: The upper part of the positioning part (210) is clamped between the opposite two cavity walls of the weight-reducing cavity (110).

5. The battery lower case frame according to claim 4, characterized by: The frame body (100) is provided with a surface plate (140) forming part of the cavity wall of the weight-reducing cavity (110), the mounting hole (130) is arranged in the surface plate (140), the edge of the curved plate (220) is butted against the edge of the surface plate (140), and the curved plate (220) and the surface plate (140) are smoothly connected.

6. The battery lower case frame of claim 4, wherein: The positioning part (210) is provided with a limiting structure, the upper end of the positioning part (210) abuts against the lower side of the surface plate (140) through the limiting structure, and the lower end of the positioning part (210) abuts against the reinforcing rib plate (120).

7. The battery lower case frame according to claim 4, characterized by: The limiting structure is a hook (211), the side close to the surface plate (140) of the hook (211) has an abutting surface abutting against the surface plate (140), and the side away from the surface plate (140) of the hook (211) is provided with an insertion guide surface (212).

8. The battery lower case frame according to claim 7, characterized by: Part of the edge of the curved plate (220) is located outside the mounting hole (130) and abuts against the outer surface of the frame body (100).

9. The battery lower case frame of claim 8, wherein: ​ 10. The battery lower case frame of claim 4, wherein: ​

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