A high strength large cell tray structure

Abstract

This invention relates to the field of battery module technology, and more particularly to a high-strength large-cell tray structure, comprising a bracket, the bracket including a frame, a base plate fixedly mounted at the bottom of the frame, connecting plates fixedly mounted on both sides inside the frame, a plurality of parallel battery cells arranged on the top of the base plate, a support member along the length of the battery cells inside the frame, the support member being located above the base plate and fixedly connected to it, notches being formed on both sides of the bottom of the support member, the connecting plates passing through the notches and fitting against the support member, a plurality of through holes inside the support member, and through holes corresponding to the positions of the through holes inside the base plate. By setting the support member on the base plate, a load-bearing carrier is added at the bottom of the base plate along the length of the battery cells, so that the weight of the battery cells on the base plate at the middle of the bracket is offset by the supporting force provided by the support member, preventing the middle section of the battery cells from bending the base plate.

Description

Technical Field

[0001] This invention relates to the field of battery module technology, and in particular to a high-strength large cell tray structure. Background Technology

[0002] Existing large cell trays, after battery module assembly, are only fixed at both ends, with no supporting structure in the middle section. This causes significant deformation at the bottom of the tray due to its own weight, especially when the tray length exceeds 1.2 meters, with bottom deflection generally exceeding 3mm. This affects module assembly accuracy and long-term service reliability, thus impacting market satisfaction with the existing structure. To address this, a structure is proposed to reduce the bending of the middle section at the bottom of the large cell tray, thereby improving the overall strength performance of the battery module system. Summary of the Invention

[0003] This invention provides a high-strength large-cell tray structure to solve the problems mentioned above.

[0004] This invention provides a high-strength large-cell tray structure, including a bracket. The bracket includes a frame, a base plate is fixedly installed at the bottom of the frame, and connecting plates are fixedly installed on both sides inside the frame. Multiple parallel cells are arranged on the top of the base plate. A support member extending along the length of the cells is provided inside the frame. The support member is located above the base plate and fixedly connected to it. Notches are opened on both sides of the bottom of the support member, and the connecting plates pass through the notches and fit against the support member.

[0005] Preferably, the support member has multiple through holes inside, the base plate has through holes corresponding to the positions of the through holes inside, and rivet screws passing through the through holes are provided inside the through holes. The support member is fixedly connected to the base plate by the rivet screws.

[0006] Preferably, a fixing plate is fixedly installed on both sides of the battery cell, and the length of the fixing plate is equal to the length of the battery cell.

[0007] Preferably, the width of the fixing plate is one-third of the cell thickness and is centered.

[0008] Preferably, the support member is located below the base plate, the bottom of the base plate is stamped with a groove, the support member is located inside the groove and fits against its inner wall, the through hole is located inside the groove, the middle section of the bottom of the connecting plate is bent to form a U-shaped opening, and the base plate is located at the back of the groove and fits against the U-shaped opening.

[0009] The technical solutions provided in the embodiments of the present invention have the following advantages compared with the prior art: 1. The structure provided by the present invention provides a support member on the base plate, which increases the load-bearing carrier along the length of the battery cell at the bottom of the base plate. This allows the weight of the battery cell at the middle of the bracket on the base plate to be offset by the supporting force provided by the support member, thus preventing the middle section of the battery cell from bending the base plate.

[0010] 2. The structure provided by the present invention reduces the bending of the middle section of the battery cell by fixing fixing plates on both sides of the battery cell, thereby further reducing the stress on the middle of the base plate.

[0011] 3. The structure provided by the present invention provides a groove at the bottom of the base plate, with the support member located inside the groove. The support member supports the inner wall of the groove, thereby supporting the base plate. When the base plate is subjected to the gravity of the battery cell, the base plate and the support member are pressed together, which can reduce the stress on the rivet screws when the support member is above the base plate and improve the structural stability of the connection between the support member and the base plate. Attached Figure Description

[0012] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with the invention and, together with the description, serve to explain the principles of the invention.

[0013] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the connection structure between the support member and the base plate of the present invention; Figure 3 This is a schematic diagram of the groove structure of the present invention.

[0015] 1. Bracket; 11. Frame; 12. Base plate; 13. Connecting plate; 14. Battery cell; 2. Support component; 21. Notch; 22. Through hole; 23. Through hole; 24. Rivet screw; 25. Fixing plate; 3. U-shaped opening; 31. Groove. Detailed Implementation

[0016] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0017] Various embodiments of the present invention may exist in the form of a range. It should be understood that the description in the form of a range is merely for convenience and brevity and should not be construed as a rigid limitation on the scope of the present invention. Therefore, it should be considered that the range description has specifically disclosed all possible sub-ranges and single numerical values ​​within that range. For example, it should be considered that the range description from 1 to 6 has specifically disclosed sub-ranges, such as from 1 to 3, from 1 to 4, from 1 to 5, from 2 to 4, from 2 to 6, from 3 to 6, etc., and single numbers within the range, such as 1, 2, 3, 4, 5, and 6, regardless of the range. In addition, whenever a numerical range is indicated in the present invention, it means including any referenced number (fraction or integer) within the indicated range. Unless otherwise specifically stated, all raw materials, reagents, instruments, and equipment used in the present invention can be purchased commercially or prepared using existing equipment.

[0018] In this invention, unless otherwise stated, directional terms such as "upper" and "lower" specifically refer to the orientation of the figures in the accompanying drawings. Furthermore, in this invention, the terms "comprising," "including," etc., mean "including but not limited to." In this invention, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. In this invention, "and / or" describes the relationship between related objects, indicating that three relationships can exist; for example, A and / or B can represent: A alone, A and B simultaneously, or B alone. A and B can be singular or plural. In this invention, "at least one" means one or more, and "more" means two or more. "At least one," "at least one of the following," or similar expressions refer to any combination of these items, including any combination of a single item or a plural item. For example, "at least one of a, b, or c" or "at least one of a, b, and c" can both mean: a, b, c, ab (i.e., a and b), ac, bc, or abc, where a, b, and c can be a single or multiple.

[0019] like Figure 1 and Figure 2As shown, a high-strength large-cell tray structure includes a bracket 1, which includes a frame 11. A base plate 12 is fixedly installed at the bottom of the frame 11. Connecting plates 13 are fixedly installed on both sides inside the frame 11. Multiple parallel-arranged cells 14 are provided on the top of the base plate 12. A support member 2 extending along the length of the cells 14 is provided inside the frame 11. The support member 2 is located above the base plate 12 and fixedly connected to it. Notches 21 are provided on both sides of the bottom of the support member 2. The connecting plates 13 pass through the notches 21 and fit against the support member 2. Multiple through holes 22 are provided inside the support member 2. Through holes 23 corresponding to the positions of the through holes 22 are provided inside the base plate 12. Rivet screws 24 pass through the through holes 23 inside the through holes 22. The support member 2 is fixedly connected to the base plate 12 by the rivet screws 24.

[0020] Specifically: By setting a support member 2 on the base plate 12, the support member 2 adds a load-bearing carrier along the length of the cell 14 at the bottom of the base plate 12, so that the weight of the cell 14 on the base plate 12 at the middle of the bracket 1 is offset by the support force provided by the support member 2, thus preventing the middle section of the cell 14 from bending the base plate 12.

[0021] like Figure 1 and Figure 2 As shown, a fixing plate 25 is fixedly installed on both sides of the battery cell 14. The length of the fixing plate 25 is equal to the length of the battery cell 14, and the width of the fixing plate 25 is one-third of the thickness of the battery cell 14 and is centered.

[0022] Specifically: by fixing the fixing plates 25 on both sides of the battery cell 14, the bending caused by the downward fall of the middle section of the battery cell 14 is reduced, thereby further reducing the stress on the middle of the base plate 12.

[0023] like Figures 1-3 As shown, the support member 2 is located below the base plate 12. The bottom of the base plate 12 is stamped with a groove 31. The support member 2 is located inside the groove 31 and fits against its inner wall. The through hole 23 is located inside the groove 31. The middle section of the bottom of the connecting plate 13 is bent to form a U-shaped opening 3. The base plate 12 is located on the back of the groove 31 and fits against the U-shaped opening 3.

[0024] Specifically: When the support member 2 is above the base plate 12, the support member 2 is connected to the base plate 12 by the rivet screw 24. When the battery cell 14 is placed above the base plate 12, the weight of the battery cell 14 causes the base plate 12 to be subjected to downward pressure, which causes the base plate 12 to tend to separate from the support member 2, thereby increasing the stress on the rivet screw 24. When the support member 2 is below the base plate 12, the weight of the battery cell 14 causes the base plate 12 to tend to fit together with the support member 2, avoiding the additional weight of the battery cell 14 on the rivet screw 24, and improving the stability of the connection between the support member 2 and the base plate 12.

[0025] Operating principle: During installation, the bracket 1 is fixed by L-shaped hangers arranged opposite to each other at both ends. By setting support members 2 on the base plate 12, the support members 2 increase the load-bearing carrier along the length of the battery cell 14 at the bottom of the base plate 12, so that the weight of the battery cell 14 at the middle of the bracket 1 is offset by the support force provided by the support members 2, preventing the middle section of the battery cell 14 from bending the base plate 12. When there are fixing plates 25 on both sides of the battery cell 14, the bending of the middle section of the battery cell 14 can be reduced, thereby further reducing the stress on the middle of the base plate 12. When there is a groove 31 at the bottom of the base plate 12 and the support members 2 are located inside the groove 31, the support members 2 support the top of the inner wall of the groove 31, thereby supporting the base plate 12. When the base plate 12 is subjected to the weight of the battery cell 14, the base plate 12 and the support members 2 are pressed together, which can reduce the stress on the rivet screws 24 when the support members 2 are above the base plate 12 and improve the structural stability of the connection between the support members 2 and the base plate 12.

[0026] The above description is merely a specific embodiment of the present invention, enabling those skilled in the art to understand or implement the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined in this invention may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features claimed in this invention.

Claims

1. A high-strength large-cell tray structure, comprising a bracket (1), the bracket (1) comprising a frame (11), a base plate (12) fixedly installed at the bottom of the frame (11), connecting plates (13) fixedly installed on both sides inside the frame (11), and a plurality of parallel-arranged cells (14) provided on the top of the base plate (12), characterized in that: A support member (2) along the length of the battery cell (14) is fixedly installed between the two sides of the inner sidewall of the frame (11). The support member (2) is located above the bottom plate (12) and is fixedly connected to it. Notches (21) are opened on both sides of the bottom of the support member (2). The connecting plate (13) passes through the notches (21) and fits against the support member (2).

2. The high-strength large-cell tray structure according to claim 1, characterized in that: The support member (2) has multiple through holes (22) inside, and the base plate (12) has through holes (23) corresponding to the positions of the through holes (22) inside. The through holes (22) have rivet screws (24) passing through the through holes (23) inside. The support member (2) is fixedly connected to the base plate (12) by the rivet screws (24).

3. A high-strength large-cell tray structure according to claim 1 or 2, characterized in that: The battery cell (14) is fixedly mounted on both sides with fixing plates (25), and the length of the fixing plates (25) is equal to the length of the battery cell.

4. The high-strength large-cell tray structure according to claim 3, characterized in that: The width of the fixing plate (25) is one-third of the thickness of the cell (14) and it is centered.

5. The high-strength large-cell tray structure according to claim 4, characterized in that: The support member (2) is located below the base plate (12). The bottom of the base plate (12) is stamped with a groove (31). The support member (2) is located inside the groove (31) and fits against its inner wall. The through hole (23) is located inside the groove (31). The middle section of the bottom of the connecting plate (13) is bent to form a U-shaped opening (3). The base plate (12) is located on the back of the groove (31) and fits against the U-shaped opening (3).

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