Battery module fixing structure

Abstract

This utility model provides a battery module fixing structure, belonging to the field of battery technology. It includes a battery box and four sets of fixing structures located on the horizontal and vertical sides inside the battery box. Each set of fixing structures includes a positioning plate slidably connected to the bottom of the battery box. An L-shaped pressure plate is slidably connected to the side wall of the positioning plate. A positioning ear is provided on the lower part of the side wall of the positioning plate. Fastener one is provided on the positioning plate, and fastener two is provided on the four sides of the bottom of the battery box. This utility model has high compatibility and versatility: it can be compatible with various specifications of battery modules, offering flexibility and versatility; assembly and maintenance are extremely convenient: it can be completed by manually tightening the wing nut, without the need for wrenches or other professional tools, achieving rapid assembly and disassembly; the fixing is reliable and the force is evenly distributed: the battery module is clamped from four directions, and the L-shaped pressure plate applies vertical constraint, effectively suppressing the movement and vibration of the battery module in the X, Y, and Z axes.

Description

Technical Field

[0001] This utility model provides a battery module fixing structure, belonging to the field of battery technology. Background Technology

[0002] With the rapid development of the new energy industry, lithium batteries, as the core energy carrier, have been widely used in electric vehicles and energy storage systems. In practical applications, multiple individual battery cells are typically connected in series and parallel to form battery modules, and then one or more battery modules are integrated into the battery box of the battery pack. To ensure the safety and reliability of the battery system during operation, especially to cope with complex conditions such as bumps, vibrations, and impacts during vehicle operation, the battery modules must be securely fixed inside the battery box.

[0003] Currently, existing battery module fixing methods mainly suffer from the following technical defects:

[0004] Inefficient assembly and maintenance: Many fixed structures use a large number of bolts to directly fasten the battery module to the battery box. This method requires tightening or loosening many bolts one by one when assembling for the first time or when replacing the module for maintenance, which seriously affects the convenience of assembly and maintenance.

[0005] Poor compatibility and versatility: Some fixing structures are customized for specific sizes and models of battery modules, such as limiting the position by welding or one-piece molded frames. When it is necessary to replace battery modules of different sizes and specifications, the original fixing structure cannot be used and must be redesigned and replaced, resulting in poor component versatility.

[0006] Insufficient reliability of fixation: Some simple limiting structures may not be able to provide continuous and uniform preload. Under long-term vibration, they are prone to loosening or relative displacement. This may not only cause fatigue damage to the cell connection points inside the battery module, but also cause electrical connection failures, and even cause safety hazards such as thermal runaway in extreme cases.

[0007] Based on this, the present invention provides a battery module fixing structure. Utility Model Content

[0008] The technical problems solved by this utility model are: low assembly and maintenance efficiency due to direct fastening with a large number of bolts; poor compatibility and versatility, only compatible with battery modules of different specifications; insufficient fixing reliability, which is not conducive to suppressing the movement and vibration of the battery module in the X, Y and Z axes.

[0009] To solve the technical problem, the technical solution provided by this utility model is as follows: a battery module fixing structure, including a battery box, and four sets of fixing structures located on the horizontal and vertical sides inside the battery box, respectively, for clamping and fixing the battery module placed in the center of the box from four directions. Each set of fixing structures includes a positioning plate slidably connected to the bottom of the battery box. An L-shaped pressure plate is slidably connected to the side wall of the positioning plate. A positioning ear is provided on the lower part of the side wall of the positioning plate. A fastener one for locking the L-shaped pressure plate is provided on the positioning plate. Fastener two for locking the positioning ear is provided on the four sides of the bottom of the battery box.

[0010] Furthermore, the fastener includes a screw rod fixedly disposed on the upper part of the side wall of the positioning plate and passing through the L-shaped pressure plate, and a wing nut placed on the outside of the L-shaped pressure plate is threaded onto the screw rod.

[0011] Furthermore, the structure of fastener one is the same as that of fastener two.

[0012] Furthermore, the positioning plate has a limiting groove 1 on its side wall away from the center of the battery box, which matches the side wall of the L-shaped pressure plate, and the bottom of the battery box has a limiting groove 2 that matches the bottom of the positioning plate.

[0013] Furthermore, the L-shaped pressure plate includes an integrally formed vertical plate and a horizontal plate, and the vertical plate is provided with a stroke hole for the screw to pass through.

[0014] Furthermore, a washer passing through the screw is provided between the wing nut and the side wall of the L-shaped pressure plate.

[0015] The beneficial effects of this utility model are:

[0016] High compatibility and versatility: It can be compatible with various specifications of battery modules with different widths, lengths and heights, making it flexible and versatile; extremely convenient assembly and maintenance: The entire fixing process can be completed by manually tightening the wing nut, without the need for professional tools such as wrenches, achieving rapid assembly and disassembly; reliable fixing and uniform force distribution: Four sets of fixing structures symmetrically clamp the battery module from four directions, and with the L-shaped pressure plate applying vertical constraint, it effectively suppresses the movement and vibration of the battery module in the X, Y and Z axes. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the battery module fixing structure of this utility model. Figure 1 .

[0018] Figure 2 This is a schematic diagram of the battery module fixing structure of this utility model. Figure 2 .

[0019] Figure 3This is a schematic diagram of the battery module fixing structure of this utility model. Figure 3 .

[0020] Figure 4 This is a partially enlarged view of a battery module fixing structure according to the present invention.

[0021] 1. Battery box; 2. Fixing structure; 3. Positioning plate; 4. L-shaped pressure plate; 5. Positioning ear; 6. Fastener one; 7. Fastener two; 8. Screw; 9. Wing nut; 10. Limiting groove two; 11. Vertical plate; 12. Horizontal plate; 13. Stroke hole; 14. Washer. Detailed Implementation

[0022] The directional terms such as up, down, left, right, front, back, front, back, top, and bottom mentioned or possibly mentioned in this specification are defined relative to their structure and are relative concepts. Therefore, they may vary depending on their location and usage; thus, these or other directional terms should not be interpreted as restrictive terms.

[0023] The singular forms “a,” “the,” and “the” used in this specification are intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used herein refers to and includes one or more of the associated listed items, any or all possible combinations thereof.

[0024] To make the technical problems to be solved, the technical solutions, and the beneficial effects of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0025] According to the appendix Figure 1 , 3As shown in Figure 4: This utility model provides a battery module fixing structure, including a battery box 1, which can be made of aluminum alloy material (such as 6061-T6) through stamping and welding processes to achieve lightweight and sufficient structural strength. It also includes four sets of fixing structures 2, located on the horizontal and vertical sides inside the battery box 1, for clamping and fixing the battery module placed in the center of the box from four directions. Each set of fixing structures 2 includes a positioning plate 3 that slides through the bottom of the battery box 1. The positioning plate 3 can be made of 45# steel or Q235 steel plate, with a thickness of 5mm-8mm to ensure sufficient rigidity. For rust prevention, its surface can be galvanized or black anodized. The bottom of the battery box 1 is provided with a limiting groove 10 that matches the bottom of the positioning plate 3. The limiting groove 10 is a dovetail groove or a rectangular structure. The positioning plate 3 has an L-shaped pressure plate 4 slidably connected to its side wall. The side wall of the positioning plate 3 away from the center of the battery box 1 has a limiting groove that matches the side wall of the L-shaped pressure plate 4. The lower part of the side wall of the positioning plate 3 has a positioning ear 5. The positioning plate 3 has a fastener 6 for locking the L-shaped pressure plate 4. The bottom of the battery box 1 has fasteners 7 for locking the positioning ear 5 on all four sides. The fastener 6 includes a screw 8 fixedly set on the upper part of the side wall of the positioning plate 3 and passing through the L-shaped pressure plate 4. The screw 8 is threaded with a wing nut 9 placed on the outside of the L-shaped pressure plate 4. Specifically, the screw 8, the wing nut 9 and the washer 14 are preferably made of 304 stainless steel to obtain excellent corrosion resistance. The use of the wing nut 9 can achieve quick locking and unlocking by hand, locking the position of the L-shaped pressure plate 4, which greatly improves the efficiency of assembly and disassembly.

[0026] As per the instruction manual Figure 1 , 2 As shown: The L-shaped pressure plate 4 includes an integrally formed vertical plate 11 and a horizontal plate 12. The vertical plate 11 has a stroke hole 13 for the screw 8 to pass through. The horizontal plate 12 can apply pressure to the top surface of the battery module for a more stable fixation. The design of the stroke hole 13 allows the L-shaped pressure plate 4 to slide within a certain range to accommodate battery modules of different heights or to apply different clamping strokes. A washer 14 passing through the screw 8 is provided between the wing nut 9 and the side wall of the L-shaped pressure plate 4. The washer 14 can increase the contact area and disperse the locking force of the wing nut 9. Effectively protects the surface of the L-shaped pressure plate 4 and prevents loosening during the locking process. Fastener 6 and fastener 7 have the same structure, meaning that fastener 7 also uses a combination of screw and wing nut. The screw of fastener 7 is fixedly set at the bottom of the battery box 1 and passes through the positioning ear 5. The screw of fastener 7 is threaded with a wing nut placed on the top of the positioning ear 5. The positioning ear 5 has a travel hole for the screw to pass through. Specifically, the wing nut can be used to quickly lock and loosen by hand, locking the position of the positioning ear 5.

[0027] The principle of this utility model

[0028] The assembly and workflow are as follows:

[0029] Initial installation: Place the battery module in the center of the battery compartment 1.

[0030] Positioning plate 3 locked: Loosen the wing nuts of fastener 7 used to lock the positioning plate 3 in the four sets of fixing structures 2, manually slide the four positioning plates 3 along the limiting groove 10 to make them fit against the four sides of the battery module, and then tighten the wing nuts of fastener 7 to lock the position of the positioning plate 3.

[0031] L-shaped pressure plate 4 locked: Loosen the wing nut 9 of fastener 6 used to lock L-shaped pressure plate 4 in the four sets of fixing structures 2. The existence of stroke hole 13 provides enough adjustment space for the sliding of L-shaped pressure plate 4. Manually slide L-shaped pressure plate 4 so that the lower surface of its horizontal plate 12 presses against the top surface of the battery module. Then tighten the wing nut 9 to lock the position of L-shaped pressure plate 4.

[0032] Disassembly process: During disassembly, simply reverse the steps above and loosen all the wing nuts by hand to quickly remove the pressure plate and positioning plate and take out the battery module.

[0033] High compatibility and versatility: Both the positioning plate 3 and the L-shaped pressure plate 4 are adjustable and slidable. The positioning plate 3 can be slidable to accommodate battery modules of different widths and lengths, while the L-shaped pressure plate 4 can be slidable to accommodate battery modules of different heights. This compatibility with various battery module specifications greatly improves the versatility of components and reduces the additional costs caused by changes in module size. Assembly and maintenance are extremely convenient: The entire fixing process can be completed simply by manually tightening the wing nut 9, without the need for wrenches or other professional tools, enabling rapid assembly and disassembly. Reliable fixing and uniform force distribution: The four sets of fixing structures 2 symmetrically clamp the battery module from four directions, ensuring that the clamping force is evenly distributed around the module, avoiding localized stress concentration. The design of the L-shaped pressure plate 4 can simultaneously apply vertical constraints, effectively suppressing the movement and vibration of the battery module in the X, Y, and Z axes, ensuring structural stability and connection reliability under complex working conditions.

[0034] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. A battery module fixing structure, comprising a battery box (1), characterized in that: It also includes four sets of fixing structures (2), which are located on the horizontal and vertical sides inside the battery box (1) respectively, for clamping and fixing the battery module placed in the center of the box from four directions. Each set of fixing structures (2) includes a positioning plate (3) that is slidably connected to the bottom inside the battery box (1). The side wall of the positioning plate (3) is slidably connected to an L-shaped pressure plate (4). The lower part of the side wall of the positioning plate (3) is provided with a positioning ear (5). The positioning plate (3) is provided with a fastener one (6) for locking the L-shaped pressure plate (4). The bottom four sides inside the battery box (1) are provided with a fastener two (7) for locking the positioning ear (5).

2. The battery module fixing structure according to claim 1, characterized in that: The fastener 1 (6) includes a screw (8) fixedly disposed on the upper part of the side wall of the positioning plate (3) and passing through the L-shaped pressure plate (4), and a wing nut (9) placed on the outside of the L-shaped pressure plate (4) is threaded onto the screw (8).

3. The battery module fixing structure according to claim 1, characterized in that: The fastener one (6) and the fastener two (7) have the same structure.

4. The battery module fixing structure according to claim 1, characterized in that: The positioning plate (3) has a limiting groove 1 on its side wall away from the center of the battery box (1) that matches the side wall of the L-shaped pressure plate (4), and the bottom of the battery box (1) has a limiting groove 2 (10) that matches the bottom of the positioning plate (3).

5. The battery module fixing structure according to claim 2, characterized in that: The L-shaped pressure plate (4) includes an integrally formed vertical plate (11) and a horizontal plate (12), and the vertical plate (11) is provided with a stroke hole (13) for the screw (8) to pass through.

6. The battery module fixing structure according to claim 2, characterized in that: A washer (14) passing through the screw (8) is provided between the wing nut (9) and the side wall of the L-shaped pressure plate (4).

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