A lithium battery convenient to disassemble

Abstract

This utility model discloses an easily disassembled lithium battery, including a base with a rectangular protective shell fixed to it; a cover plate is detachably provided on the upper end of the protective shell; it also includes a positioning component and a connecting component; the connecting component includes mounting grooves at the four corners of the upper end of the protective shell, each mounting groove containing an elastic column, and a circular plate rotatably mounted on the upper end of each elastic column, with several rotationally symmetrical fan-shaped pieces arranged circumferentially on the outer side of the circular plate; each of the four corners of the cover plate has a circular groove to accommodate the circular plate, and the outer side of each circular groove is connected to a fan-shaped groove to accommodate the fan-shaped pieces. In this utility model, multiple fan-shaped pieces extend out of the corresponding fan-shaped grooves on the cover plate. By applying force through protrusions to rotate the fan-shaped pieces, they can form obstructions and limits on the cover plate, preventing the cover plate from detaching. This allows for quick installation and disassembly, reducing the number of loose parts.

Description

Technical Field

[0001] This utility model relates to the field of lithium battery technology, specifically to a lithium battery that is easy to disassemble. Background Technology

[0002] A lithium battery is a type of battery that uses lithium metal or lithium alloy as the negative electrode material and employs a non-aqueous electrolyte solution. Its working principle is based on the insertion and extraction of lithium ions between the positive and negative electrodes. It has advantages such as high energy density, high voltage, long cycle life, and no memory effect, and is widely used in consumer electronics, electric vehicles, energy storage systems, and many other fields.

[0003] A lithium-ion battery pack is a battery system composed of multiple lithium-ion battery cells connected by specific electrical methods. It is protected by an outer casing, which can be connected by welding, bolts, or other methods. In practical applications, overcharging and over-discharging, internal and external short circuits, abnormal temperatures, and mechanical damage can cause individual cells to exhibit abnormal voltage, blackened terminals, or excessively high contact resistance, necessitating the replacement of those cells. However, bolted battery pack casings are not only inefficient to disassemble but also involve multiple loose bolts that are easily lost after disassembly, indicating room for technological improvement. Utility Model Content

[0004] This invention aims to solve the technical problems of low efficiency and numerous scattered parts during disassembly of bolt-connected battery pack casings, and provides a lithium battery that is easy to disassemble.

[0005] To solve the above-mentioned technical problems, the technical solution provided by this utility model is as follows: a lithium battery that is easy to disassemble, including a base, on which a rectangular protective shell is fixedly connected; a cover plate is detachably provided at the upper end of the protective shell; and further comprising:

[0006] Positioning assembly; including a rectangular limiting plate provided circumferentially under the cover plate, the limiting plate being able to extend into the upper end of the protective shell, a plurality of positioning posts being provided on the outer side of the limiting plate, and a positioning groove being provided on the inner side of the upper end of the protective shell to accommodate the positioning posts.

[0007] The connecting component includes mounting grooves at the four corners of the upper end of the protective shell, each mounting groove containing an elastic column, each elastic column having a rotatable circular plate at its upper end, and the outer side of the circular plate having several rotationally symmetrical fan-shaped pieces along its circumference; the cover plate has circular grooves at the four corners of its upper surface that can accommodate the circular plates, and the outer side of each circular groove is connected to a fan-shaped groove that can accommodate the fan-shaped pieces.

[0008] Furthermore, the cover plate is provided with several intersecting transverse and longitudinal grooves; the outer side of the protective shell is provided with several strip-shaped grooves.

[0009] Furthermore, a BMS module is provided on one side of the protective shell.

[0010] Furthermore, the base area is larger than the protective shell, and the portion extending out of the protective shell is provided with several mounting holes.

[0011] Furthermore, the bottom surface of the circular plate is provided with a receiving groove that can accommodate the upper end of the elastic column, and a bearing is provided in the receiving groove.

[0012] Furthermore, the elastic column includes a hollow cylinder and an extension column slidably disposed inside the lower end of the hollow cylinder; the outer side of the upper end of the extension column and the inner side of the lower end of the hollow cylinder are provided with corresponding limiting shoulders; the upper end of the extension column is provided with a plurality of springs, and the upper ends of the springs are fixedly connected to the upper end of the hollow cylinder.

[0013] Furthermore, the upper end of the circular plate is provided with a protrusion, the longitudinal section of the protrusion is I-shaped, and the outer side of the protrusion is provided with several anti-slip grooves.

[0014] Furthermore, one of the sector-shaped pieces is marked with a first mark, and the protective shell is marked with a second mark corresponding to the first mark.

[0015] The advantages of this utility model compared with the prior art are as follows:

[0016] During installation, the cover plate is quickly positioned using the limiting plate, positioning post, and positioning groove, and then placed onto the protective shell.

[0017] After positioning, multiple sector-shaped pieces extend out of the corresponding sector-shaped grooves on the cover plate. At this time, by applying force to the protrusions to rotate the sector-shaped pieces, the sector-shaped pieces can form a block and limit on the cover plate, so that the cover plate cannot be removed, thus achieving quick installation. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model.

[0019] Figure 2 This is a schematic diagram of the structure of this utility model. Figure 2 .

[0020] Figure 3 This is a schematic diagram of the connecting component structure of this utility model.

[0021] Figure 4 This is a cross-sectional view of the connecting component of this utility model.

[0022] As shown in the figure: 1. Base, 2. Protective shell, 3. Cover plate, 4. Horizontal groove, 5. Vertical groove, 6. BMS module, 7. Strip groove, 8. Limiting plate, 9. Positioning post, 10. Positioning groove, 11. Mounting groove, 12. Elastic column, 13. Round plate, 14. Fan-shaped piece, 15. Round groove, 16. Fan-shaped groove, 17. Bearing, 18. Hollow cylinder, 19. Extension column, 20. Limiting shoulder, 21. Spring, 22. Protrusion, 23. Marker point one, 24. Marker point two. Detailed Implementation

[0023] The present invention will now be described in further detail with reference to the accompanying drawings.

[0024] Example 1, in conjunction with Appendix Figure 1 , 2 A lithium battery that is easy to disassemble includes a base 1, on which a rectangular protective shell 2 is fixedly attached; a BMS module 6 is provided on one side of the protective shell 2, and when a single cell fails, the BMS data can be read by a diagnostic instrument to determine the number of the faulty cell; the area of ​​the base 1 is larger than that of the protective shell 2, and the part extending out of the protective shell 2 is provided with several mounting holes, so that the overall structure can be installed in the corresponding position according to the use needs.

[0025] Combined with appendix Figure 1 , 2 The protective shell 2 is detachably equipped with a cover plate 3 at its upper end; the cover plate 3 is provided with several intersecting transverse grooves 4 and longitudinal grooves 5; the outer side of the protective shell 2 is provided with several strip grooves 7; the transverse grooves 4, longitudinal grooves 5, and strip grooves 7 can all reduce the thickness of the cover plate 3 and the protective shell 2, thereby improving the heat dissipation effect; the protective shell 2 and the cover plate 3 are made of aluminum alloy, which has high strength, lightweight performance, and good heat dissipation effect;

[0026] Combined with appendix Figure 1 , 2 3. It also includes positioning components; including a rectangular limiting plate 8 provided circumferentially below the cover plate 3, the limiting plate 8 can extend into the upper end of the protective shell 2, and a number of positioning posts 9 are provided on the outer side of the limiting plate 8, and the inner side of the upper end of the protective shell 2 is provided with positioning grooves 10 that can accommodate the positioning posts 9; when installing the cover plate 3, the limiting plate 8 is first inserted into the protective shell 2, at which time the positioning posts 9 are all inserted into the corresponding positioning grooves 10, thereby improving the stability of the cover plate 3;

[0027] Combined with appendix Figure 1 , 2 3, 4, and also include connecting components; including mounting grooves 11 at the four corners of the upper end of the protective shell 2, each mounting groove 11 is provided with an elastic column 12, each elastic column 12 is rotatably provided with a circular plate 13 at its upper end, the bottom surface of the circular plate 13 is provided with a receiving groove that can accommodate the upper end of the elastic column 12, and a bearing 17 is provided in the receiving groove to realize the rotation of the circular plate 13 relative to the elastic column 12, which facilitates the subsequent adjustment of the position of the fan-shaped piece 14;

[0028] The outer side of the circular plate 13 is provided with a number of rotationally symmetrical fan-shaped pieces 14 along the circumferential direction; the four corners of the cover plate 3 are provided with circular grooves 15 that can accommodate the circular plate 13, and the outer side of the circular grooves 15 is connected to fan-shaped grooves 16 that can accommodate the fan-shaped pieces 14; thus, the circular plate 13 and the fan-shaped pieces 14 can extend into the circular grooves 15 and the fan-shaped grooves 16.

[0029] Based on the above structure, the elastic column 12 includes a hollow cylinder 18 and an extension column 19 slidably disposed inside the lower end of the hollow cylinder; corresponding limiting shoulders 20 are provided on the outer side of the upper end of the extension column 19 and the inner side of the lower end of the hollow cylinder 18; several springs 21 are provided on the upper end of the extension column 19, and the upper ends of the springs 21 are fixedly connected to the upper inner end of the hollow cylinder 18, so that the hollow cylinder 18 can move upward a certain distance outside the extension column 19. That is, when the circular plate 13 and the fan-shaped piece 14 extend into the circular groove 15 and the fan-shaped groove 16, they continue to move upward until the fan-shaped piece 14 extends out of the fan-shaped groove 16. At this time, the fan-shaped piece 14 is rotated so that its position is not consistent with the position of the fan-shaped groove 16. Under the drive of the spring 21 resetting, the fan-shaped piece 14 has a downward force, thereby restricting itself above the cover plate 3 and realizing the installation of the cover plate 3; when disassembling, the fan-shaped piece 14 is rotated so that its position is consistent with the position of the fan-shaped groove 16, so that the cover plate 3 can be disassembled upward, realizing quick disassembly without any extra disassembled parts;

[0030] In addition, the upper end of the circular plate 13 is provided with a protrusion 22. The longitudinal section of the protrusion 22 is I-shaped. Several anti-slip grooves are provided on the outer side of the protrusion 22. The protrusion 22 facilitates the application of force to the fan-shaped plate 14 and the elastic column 12.

[0031] In addition, one of the sector pieces 14 is marked with a first mark 23, and the protective shell 2 is marked with a second mark 24 corresponding to the first mark 23. In actual use, the sector piece 14 can be positioned correctly and inserted into the sector slot 15 by matching the first mark 23 with the second mark 24 during installation. If there is a slight deviation, the position of the sector piece 14 can be finely adjusted by the protrusion 22.

[0032] 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 lithium battery convenient to disassemble, comprising a base (1) on which a rectangular protective shell (2) is fixedly connected; characterized in that: The protective shell (2) is detachably equipped with a cover plate (3) at its upper end; it also includes: Positioning assembly; including a rectangular limiting plate (8) provided circumferentially below the cover plate (3), the limiting plate (8) can extend into the upper end of the protective shell (2), a plurality of positioning posts (9) are provided on the outer side of the limiting plate (8), and a positioning groove (10) is provided on the inner side of the upper end of the protective shell (2) to accommodate the positioning posts (9). The connecting components include mounting grooves (11) at the four corners of the upper end of the protective shell (2), each mounting groove (11) is provided with an elastic column (12), each elastic column (12) is rotatably provided with a circular plate (13) at the upper end, and the outer side of the circular plate (13) is provided with a plurality of rotationally symmetrical fan-shaped pieces (14) along the circumferential direction; each of the four corners of the upper cover plate (3) is provided with a circular groove (15) that can accommodate the circular plate (13), and the outer side of the circular groove (15) is connected to a fan-shaped groove (16) that can accommodate the fan-shaped pieces (14).

2. The easily detachable lithium battery of claim 1, wherein: The cover plate (3) is provided with several intersecting transverse grooves (4) and longitudinal grooves (5); the outer side of the protective shell (2) is provided with several strip grooves (7).

3. The easily detachable lithium battery of claim 1, wherein: A BMS module (6) is provided on one side of the protective shell (2).

4. The easily detachable lithium battery of claim 1, wherein: The base (1) has an area larger than the protective shell (2), and the portion extending out of the protective shell (2) is provided with several mounting holes.

5. The easily detachable lithium battery of claim 1, wherein: The bottom surface of the circular plate (13) is provided with a receiving groove that can accommodate the upper end of the elastic column (12), and a bearing (17) is provided in the receiving groove.

6. The easily detachable lithium battery of claim 1, wherein: The elastic column (12) includes a hollow cylinder (18) and an extension column (19) slidably disposed inside the lower end of the hollow cylinder; the extension column (19) has corresponding limiting shoulders (20) on the outer side of its upper end and the inner side of the lower end of the hollow cylinder (18); the extension column (19) has several springs (21) at its upper end, and the upper end of the springs (21) is fixedly connected to the upper end of the hollow cylinder (18).

7. The easily detachable lithium battery of claim 1, wherein: The upper end of the circular plate (13) is provided with a protrusion (22), the longitudinal section of the protrusion (22) is I-shaped, and the outer side of the protrusion (22) is provided with several anti-slip grooves.

8. The easily detachable lithium battery of claim 1, wherein: One of the fan-shaped pieces (14) is marked with a first mark (23), and the protective shell (2) is marked with a second mark (24) corresponding to the first mark (23).

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