Thin-walled reinforced lithium battery case
By designing a thin-walled reinforced lithium battery casing with limiting and buffering components, the problems of insufficient heat dissipation and protection are solved, achieving multi-directional fixation and impact buffering, adapting to the installation of lithium batteries of different sizes, and improving the stability and heat dissipation performance of lithium batteries.
Patent Information
- Application Number
- CN202522241516.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-23
- Publication Date
- 2026-11-03
- Estimated Expiration
- 2035-10-23
AI Technical Summary
Existing lithium battery casings have insufficient heat dissipation, poor shock absorption, and inadequate protection, and are difficult to adapt to the installation of lithium batteries of different sizes.
A thin-walled reinforced lithium battery casing was designed, employing a limiting component and a buffer component. The limiting component, through the action of a threaded rod and a slot, has a locking block fixedly connected to the inner threaded rod and the inner wall of the fixed cylinder, and a slot is provided on the inner wall of the fixed cylinder to ensure the normal movement of the connecting rod. An abutment plate is fixedly connected to the surface of the connecting rod, and a threaded rod is connected internally to the connecting rod. A small bearing is installed on the surface of the threaded rod to ensure the normal rotation of the threaded rod. A handwheel is fixedly connected to one end of the threaded rod.
This technology enables the fixation of lithium batteries of different sizes, enhances heat dissipation, reduces the impact of shock on lithium batteries, and improves the stability and safety of lithium batteries.
Smart Images
Figure CN224934917U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of battery casing technology, and in particular to a thin-walled reinforced lithium battery casing. Background Technology
[0002] The casing of a lithium battery is made of aluminum alloy and is mainly used in square lithium batteries. With the needs of practical applications, higher requirements have been put forward for the energy density, safety and cycle life of batteries. In addition to using high specific energy electrode materials, reducing the mass of the battery casing structure and improving its strength and heat dissipation performance are important ways to improve battery performance. Lithium battery casings are designed with two types of corners: square and round. The aluminum casing is generally made of aluminum-manganese alloy.
[0003] However, it still has some drawbacks. For example, the battery casing has the function of protecting the internal components of the battery from external impacts and electrolyte leakage. However, the heat dissipation effect of the existing lithium battery casing is insufficient, the casing is only a single layer, and the shock absorption effect is poor, resulting in poor protection of the lithium battery. In addition, the lithium batteries vary in size, making it troublesome to install lithium batteries of different sizes. Therefore, a thin-walled reinforced lithium battery casing is proposed. Utility Model Content
[0004] To address the aforementioned technical problems, this utility model provides a thin-walled reinforced lithium battery casing.
[0005] This utility model is achieved by the following technical solution: a thin-walled reinforced lithium battery casing, including a bottom plate, an outer plate fixedly connected at equal intervals to the top of the bottom plate, a top plate installed on the top of the outer plate, a limit component installed inside the outer plate and the top plate, and two buffer components installed inside the outer plate and the bottom plate.
[0006] The limiting component includes a fixed cylinder, a connecting rod that is slidably connected inside the fixed cylinder, an abutment plate that is fixedly connected to one end of the connecting rod, a threaded rod that is threaded inside the connecting rod, and a handwheel that is fixedly connected to one end of the threaded rod.
[0007] The buffer assembly includes a limiting groove plate, a limiting rod installed inside the limiting groove plate, a connecting block fixedly connected inside the limiting groove plate, a damping rod fixedly connected to the surface of the connecting block, a connecting plate fixedly connected to one end of the damping rod, two connecting rods rotatably connected to the surface of the connecting plate, a buffer block rotatably connected to one end of the connecting rods, and a buffer spring A and a buffer spring B fixedly connected to the surface of the buffer block. One end of the buffer spring A is fixedly connected to the inner wall of the limiting groove plate, and one end of the buffer spring B is fixedly connected to the surface of the connecting block.
[0008] As a further improvement to the above solution, a small bearing is installed on the surface of the threaded rod, and the surface of the small bearing is installed on the inner wall of the fixed cylinder to ensure the normal rotation of the threaded rod.
[0009] As a further improvement to the above solution, two locking blocks are fixedly connected to the surface of the connecting rod, and a locking groove adapted to the locking blocks is opened on the inner wall of the fixing cylinder to ensure the normal movement of the connecting rod.
[0010] As a further improvement to the above solution, the outer plate has heat dissipation vents spaced at equal intervals on its surface to facilitate the dissipation of heat to the outside.
[0011] As a further improvement to the above solution, both the outer panel and the top panel have mounting openings inside, and the fixing cylinder is installed through the mounting openings to ensure the normal operation of the fixing cylinder.
[0012] As a further improvement to the above solution, a U-shaped groove is provided on the top of the top plate, and a handle is rotatably connected inside the U-shaped groove to facilitate pulling open the top plate.
[0013] As a further improvement to the above solution, limit bolts are installed at the four corners of the top plate, and threaded openings that match the bolts are provided on the top of both outer plates, so as to facilitate the sealing and protection of the lithium battery through the top plate.
[0014] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. This utility model, by setting a limiting component, allows the lithium battery to be placed on the base plate during use. Then, the threaded rod on the outer plate is rotated. Under the action of the locking block and the locking groove, the connecting rod moves along the fixing cylinder with the abutment plate, thereby making the abutment plate abut against the surface of the lithium battery and limiting and fixing the lithium battery. Then, the top plate is installed on the outer plate with bolts. Finally, the threaded rod on the top plate is rotated so that the upper abutment plate abuts against the top of the lithium battery, thereby fixing the front of the lithium battery. This allows the device to be adapted to lithium batteries of different sizes.
[0015] 2. By setting up a buffer component, when the device is impacted, the impact force is transmitted through the damping rod, which diverts the impact force through the damping rod and the connecting rod, thereby dispersing the impact force. When the impact force moves to the buffer block, it is buffered by the buffer springs A and B, thus converting the impact force into elastic force, thereby achieving buffering of the impact force, reducing the impact force on the lithium battery body, and improving the stability of the lithium battery during operation. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a structural schematic diagram of the base plate, outer plate, and top plate of this utility model; Figure 3 This is a schematic diagram of the structure of the limiting groove plate, connecting block and damping rod of this utility model; Figure 4 This is a schematic diagram of the structure of the fixed cylinder, connecting rod, and threaded rod of this utility model.
[0017] Explanation of key symbols: 1. Base plate; 2. Outer plate; 3. Top plate; 4. Fixing cylinder; 5. Connecting rod; 6. Threaded rod; 7. Limiting groove plate; 8. Connecting block; 9. Damping rod; 10. Connecting plate; 11. Connecting rod; 12. Buffer block; 13. Abutment plate. Detailed Implementation
[0018] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments. Example
[0019] Please combine Figure 1-4 This embodiment of a thin-walled reinforced lithium battery casing includes a base plate 1, an outer plate 2 fixedly connected to the top of the base plate 1 at equal intervals, heat dissipation vents evenly spaced on the surface of the outer plate 2 to facilitate heat dissipation by diffusing heat to the outside, a top plate 3 mounted on the top of the outer plate 2, a U-shaped groove on the top of the top plate 3, a handle rotatably connected inside the U-shaped groove to facilitate opening the top plate 3, limit bolts installed at the four corners of the top of the top of the top plate 3, threaded openings adapted to the bolts on the top of both sides of the outer plate 2 to facilitate sealing and protecting the lithium battery through the top plate 3, limit components installed inside the outer plate 2 and the top plate 3, and two buffer components installed inside the outer plate 2 and the base plate 1.
[0020] The limiting assembly is used to limit and fix lithium batteries of different sizes. The limiting assembly includes a fixing cylinder 4, and the inner sides of the outer plate 2 and the top plate 3 are all provided with mounting holes. The fixing cylinder 4 is inserted through the mounting hole to ensure the normal operation of the fixing cylinder 4. A connecting rod 5 is slidably connected inside the fixing cylinder 4. Two locking blocks are fixedly connected to the surface of the connecting rod 5. The inner wall of the fixing cylinder 4 is provided with a locking groove that matches the locking blocks to ensure the normal movement of the connecting rod 5. An abutment plate 13 is fixedly connected to one end of the connecting rod 5. A threaded rod 6 is threadedly connected inside the connecting rod 5. A small bearing is installed on the surface of the threaded rod 6. The surface of the small bearing is installed on the inner wall of the fixing cylinder 4 to ensure the normal rotation of the threaded rod 6. A handwheel is fixedly connected to one end of the threaded rod 6.
[0021] The buffer assembly is used to reduce the impact force on the lithium battery during use. The buffer assembly includes a limiting groove plate 7, a limiting rod installed inside the limiting groove plate 7, a connecting block 8 fixedly connected inside the limiting groove plate 7, a damping rod 9 fixedly connected to the surface of the connecting block 8, a connecting plate 10 fixedly connected to one end of the damping rod 9, two connecting rods 11 rotatably connected to the surface of the connecting plate 10, a buffer block 12 rotatably connected to one end of the connecting rod 11, a buffer spring A and a buffer spring B fixedly connected to the surface of the buffer block 12, one end of the buffer spring A fixedly connected to the inner wall of the limiting groove plate 7, and one end of the buffer spring B fixedly connected to the surface of the connecting block 8.
[0022] The implementation principle of a thin-walled reinforced lithium battery casing in this application embodiment is as follows: During use, the lithium battery is placed on the base plate 1, and then the threaded rod 6 on the outer plate 2 is rotated. Under the action of the locking block and the locking groove, the connecting rod 5 moves along the fixing cylinder 4 with the abutment plate 13, so that the abutment plate 13 abuts against the surface of the lithium battery to limit and fix the lithium battery. Then, the top plate 3 is installed on the outer plate 2 by bolts. Finally, the threaded rod 6 on the top plate 3 is rotated so that the upper abutment plate 13 abuts against the top of the lithium battery, thereby fixing the front of the lithium battery and enabling the device to adapt to lithium batteries of different sizes.
[0023] When the device is impacted, the impact force is transmitted through the damping rod 9, which diverts the impact force through the damping rod 9 and the connecting rod 11, thereby dispersing the impact force. When the impact force moves to the buffer block 12, it is buffered by the buffer spring A and the buffer spring B, thereby converting the impact force into elastic force, thus achieving buffering of the impact force, reducing the impact force on the lithium battery body, and improving the stability of the lithium battery during operation.
[0024] During the operation of the device, heat is generated. The heat enters the interior of the outer plate 2 through the heat dissipation vent, thereby making the heat come into contact with the inner wall of the outer plate 2. This reduces the heat insulation effect of the outer plate 2 and facilitates heat exchange between the outer plate 2 and the outside world, thus improving the heat dissipation effect of the device.
[0025] The above embodiments are merely preferred embodiments of this utility model and should not be construed as limiting the scope of protection of this utility model. Any non-substantial changes and substitutions made by those skilled in the art based on this utility model shall fall within the scope of protection claimed by this utility model.
Claims
1. A thin-walled reinforced lithium battery casing, characterized in that, Includes a base plate (1), an outer plate (2) is fixedly connected to the top of the base plate (1) at equal intervals, a top plate (3) is installed on the top of the outer plate (2), limit components are installed inside the outer plate (2) and the top plate (3), and two buffer components are installed inside the outer plate (2) and the base plate (1); The limiting component includes a fixed cylinder (4), a connecting rod (5) is slidably connected inside the fixed cylinder (4), an abutment plate (13) is fixedly connected to one end of the connecting rod (5), a threaded rod (6) is threaded inside the connecting rod (5), and a handwheel is fixedly connected to one end of the threaded rod (6). The buffer assembly includes a limiting groove plate (7), a limiting rod is installed inside the limiting groove plate (7), a connecting block (8) is fixedly connected inside the limiting groove plate (7), a damping rod (9) is fixedly connected to the surface of the connecting block (8), a connecting plate (10) is fixedly connected to one end of the damping rod (9), two connecting rods (11) are rotatably connected to the surface of the connecting plate (10), a buffer block (12) is rotatably connected to one end of the connecting rod (11), a buffer spring A and a buffer spring B are fixedly connected to the surface of the buffer block (12), one end of the buffer spring A is fixedly connected to the inner wall of the limiting groove plate (7), and one end of the buffer spring B is fixedly connected to the surface of the connecting block (8).
2. The thin-walled reinforced lithium battery casing as described in claim 1, characterized in that, The surface of the threaded rod (6) is fitted with a small bearing, and the surface of the small bearing is mounted on the inner wall of the fixed cylinder (4).
3. A thin-walled reinforced lithium battery casing as described in claim 1, characterized in that, Two locking blocks are fixedly connected to the surface of the connecting rod (5), and a locking groove adapted to the locking blocks is provided on the inner wall of the fixing cylinder (4).
4. A thin-walled reinforced lithium battery casing as described in claim 1, characterized in that, The outer plate (2) has heat dissipation vents spaced at equal intervals on its surface.
5. A thin-walled reinforced lithium battery casing as described in claim 1, characterized in that, The outer plate (2) and the top plate (3) are both provided with mounting openings, and the fixing cylinder (4) is installed through the inside of the mounting opening.
6. A thin-walled reinforced lithium battery casing as described in claim 1, characterized in that, The top of the top plate (3) is provided with a U-shaped groove, and a handle is rotatably connected inside the U-shaped groove.
7. A thin-walled reinforced lithium battery casing as described in claim 1, characterized in that, Limit bolts are installed at the four corners of the top plate (3), and threaded openings that match the bolts are provided on the top of the outer plates (2) on both sides.