Consumer lithium battery protection structure capable of preventing short circuit

Abstract

The utility model discloses an anti-short-circuit consumer lithium battery protection structure which comprises a lithium battery pack, positive and negative wire harnesses are arranged on the lithium battery pack, and a protection assembly capable of protecting the positive and negative wire harnesses is arranged on the lithium battery pack. The protection assembly comprises a limiting frame, a groove, a fixing rod, a sliding block, a limiting groove, a positioning plate, a fixing groove, a fixing block, an arc-shaped groove, a threaded hole, a bolt, a limiting window and a telescopic spring, the limiting frame is arranged on the lithium battery pack, the groove is formed in the inner wall of the limiting frame, the fixing rod is arranged on the inner wall of the groove, and the sliding block is arranged on the fixing rod in a sleeving mode and is in sliding connection with the inner wall of the groove; the limiting groove is formed in the sliding block, the positioning plate is arranged in the limiting frame, the fixing groove is formed in the positioning plate, the fixing block is arranged on the inner wall of the fixing groove and is in sliding connection with the inner wall of the limiting groove, and the arc-shaped groove is formed in the positioning plate. According to the technical scheme, the purpose of safety protection at the joint of the lithium battery pack and the positive and negative wire harnesses can be achieved.

Description

Technical Field

[0001] This utility model relates to the field of lithium battery technology, and in particular to a short-circuit protection structure for consumer lithium batteries. Background Technology

[0002] As the core energy source for modern portable electronic devices, consumer lithium batteries have developed rapidly in recent years with the popularization of smartphones, laptops, wearable devices, and wireless headphones. The technology can be traced back to 1991 when Sony first commercialized lithium-ion batteries. By using graphite anode and lithium cobalt oxide cathode materials, high energy density and cyclic charging and discharging characteristics were achieved. Compared with traditional nickel-metal hydride or lead-acid batteries, lithium batteries have significant advantages such as light weight, no memory effect, and low self-discharge rate, making them the first choice in the consumer electronics field.

[0003] Short circuits are a serious problem during the use of consumer lithium batteries, which can lead to dangerous situations such as battery damage, overheating, and even fire. Existing lithium battery protection measures are insufficient in preventing short circuits and cannot effectively cope with complex usage environments and unexpected situations. At the same time, when workers disassemble and repair consumer lithium batteries, the positive and negative electrode harnesses are fixedly connected to them. Currently, there are no protective measures between the positive and negative electrode harnesses and the consumer lithium batteries. When workers accidentally move or pull on the positive and negative electrode harnesses, they can easily become detached from the consumer lithium batteries. Utility Model Content

[0004] The main purpose of this invention is to propose a short-circuit protection structure for consumer lithium batteries, aiming to solve the technical problem that existing positive and negative electrode harnesses do not have protective measures between them and consumer lithium batteries.

[0005] To achieve the above objectives, the present invention proposes a short-circuit protection structure for consumer lithium batteries, including a lithium battery pack, wherein positive and negative electrode harnesses are provided on the lithium battery pack, and a protective component is provided on the lithium battery pack to protect the positive and negative electrode harnesses.

[0006] The protective assembly includes a limiting frame, a groove, a fixing rod, a slider, a limiting slot, a positioning plate, a fixing slot, a fixing block, an arc-shaped groove, a threaded hole, a bolt, a limiting window, and a telescopic spring. The limiting frame is disposed on the lithium battery pack. The groove is formed on the inner wall of the limiting frame. The fixing rod is disposed on the inner wall of the groove. The slider is sleeved on the fixing rod and slidably connected to the inner wall of the groove. The limiting slot is formed on the slider. The positioning plate is disposed inside the limiting frame. The fixing slot is formed on the positioning plate. The fixing block is disposed on the inner wall of the fixing slot and slidably connected to the inner wall of the limiting slot. The arc-shaped groove is formed on the positioning plate. The threaded hole is formed on the positioning plate. The bolt is threadedly connected to the threaded hole. The limiting window is formed on the limiting frame. The telescopic spring is disposed between the inner wall of the groove and the slider and is sleeved on the fixing rod.

[0007] Optionally, the arc-shaped groove is semi-circular, and there are multiple arc-shaped grooves, which are joined together to form a circle.

[0008] Optionally, the number of bolts is multiple, and there is a gap between the multiple bolts.

[0009] Optionally, the limiting window is located directly above the threaded hole.

[0010] Optionally, the lithium battery pack has side ears on its outer side, and the number of side ears is multiple.

[0011] Optionally, the output ends of the positive and negative wire harnesses are provided with insulating protective sleeves.

[0012] The technical solution of this utility model has the following beneficial effects: When it is necessary to protect the lithium battery pack and the positive and negative electrode harnesses, the technical solution of this utility model first leaves an extra section of the positive and negative electrode harnesses between the positioning plate and the lithium battery pack. Then, the bolts are screwed into the threaded holes through the limiting window. The upper and lower positioning plates are screwed into close contact through the limiting groove, fixing groove and fixing block, so that the arc groove clamps and fixes the positive and negative electrode harnesses. When the workers accidentally pull the positive and negative electrode harnesses while disassembling or repairing the lithium battery pack, the positive and negative electrode harnesses drive the slider on the positioning plate to squeeze the telescopic spring through the limiting groove and fixing rod. At this time, the extra positive and negative electrode harnesses between the positioning plate and the lithium battery pack will be straightened. Then, the positive and negative electrode harnesses will return to their original position through the reaction force of the telescopic spring, thereby preventing the connection between the positive and negative electrode harnesses and the lithium battery pack from being broken when the workers pull them, thus playing a safety protection role. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0014] Figure 1 This is a schematic diagram of the overall structure of a short-circuit protection structure for consumer lithium batteries according to an embodiment of the present invention.

[0015] Figure 2 This is an enlarged view of the positive and negative electrode wiring harnesses of a short-circuit protection structure for a consumer lithium battery according to an embodiment of the present invention.

[0016] Figure 3 This is a cross-sectional view of a protective component of a short-circuit protection structure for consumer lithium batteries according to an embodiment of the present invention.

[0017] Figure 4 for Figure 3 Enlarged view of point A in the image;

[0018] Figure 5 Right view of a protective component of a short-circuit protection structure for consumer lithium batteries according to an embodiment of this utility model;

[0019] Figure 6 for Figure 5 Enlarged view of point B in the image.

[0020] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings.

[0021] Reference numerals: 1. Lithium battery pack; 2. Positive and negative electrode harness; 3. Protective components; 31. Limiting frame; 32. Groove; 33. Fixing rod; 34. Slider; 35. Limiting groove; 36. Positioning plate; 37. Fixing groove; 38. Fixing block; 39. Arc groove; 310. Threaded hole; 311. Bolt; 312. Limiting window; 313. Telescopic spring; 4. Side lug; 5. Insulating protective sleeve. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0024] Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0025] This invention proposes a short-circuit protection structure for consumer lithium batteries.

[0026] like Figures 1 to 6 As shown, in one embodiment of the present invention, the short-circuit protection structure for consumer lithium batteries includes a lithium battery pack 1, a positive and negative electrode harness 2 on the lithium battery pack 1, and a protective component 3 on the lithium battery pack 1 that can protect the positive and negative electrode harness 2.

[0027] The protective component 3 includes a limiting frame 31, a groove 32, a fixing rod 33, a slider 34, a limiting groove 35, a positioning plate 36, a fixing groove 37, a fixing block 38, an arc-shaped groove 39, a threaded hole 310, a bolt 311, a limiting window 312, and a telescopic spring 313. The limiting frame 31 is mounted on the lithium battery pack 1. The groove 32 is formed on the inner wall of the limiting frame 31. The fixing rod 33 is formed on the inner wall of the groove 32. The slider 34 is sleeved on the fixing rod 33 and slidably connected to the inner wall of the groove 32. The limiting groove 35 is formed on the inner wall of the groove 32. On the slider 34, the positioning plate 36 is located inside the limiting frame 31, the fixing groove 37 is opened on the positioning plate 36, the fixing block 38 is located on the inner wall of the fixing groove 37 and is slidably connected to the inner wall of the limiting groove 35, the arc groove 39 is opened on the positioning plate 36, the threaded hole 310 is opened on the positioning plate 36, the bolt 311 is threadedly connected to the threaded hole 310, the limiting window 312 is opened on the limiting frame 31, and the telescopic spring 313 is located between the inner wall of the groove 32 and the slider 34 and is sleeved on the fixing rod 33.

[0028] Specifically, the arc-shaped groove 39 is semi-circular in shape, and there are multiple arc-shaped grooves 39. The multiple arc-shaped grooves 39 are spliced ​​together to form a circle. The arc-shaped grooves 39 can conveniently limit and fix the positive and negative wire harnesses 2.

[0029] Specifically, there are multiple bolts 311, with intervals between them. Preferably, in this embodiment, there are two bolts 311, which facilitates the limiting function of the threaded holes 310 on both sides of the positioning plate 36.

[0030] Specifically, the limiting window 312 is located directly above the threaded hole 310, and the limiting window 312 makes it convenient for workers to tighten the bolt 311 with tools.

[0031] Specifically, the lithium battery pack 1 has a side ear 4 on its outer side. There are multiple side ears 4, which facilitate the fixing of the lithium battery pack 1 to the equipment.

[0032] Specifically, the output ends of the positive and negative wire harness 2 are provided with insulating protective sleeves 5.

[0033] It should be noted that the insulating protective sleeve 5 is made of high-temperature resistant and high-insulation material. A temperature protection switch is also installed at the positive terminal of the battery cell. The temperature protection switch is connected to the control circuit. When a short circuit is detected and the temperature rises, the temperature protection switch will immediately cut off the output of the lithium battery pack to further prevent dangers such as fires caused by short circuits.

[0034] Specifically, the working principle and usage process of this utility model are as follows:

[0035] When protection is required for the lithium battery pack 1 and the positive and negative electrode harnesses 2, firstly, leave an extra section of the positive and negative electrode harnesses 2 between the positioning plate 36 and the lithium battery pack 1. Then, screw the bolt 311 into the threaded hole 310 through the limiting window 312. Tighten the upper and lower positioning plates 36 to fit together through the limiting groove 35, the fixing groove 37, and the fixing block 38, so that the arc groove 39 clamps and fixes the positive and negative electrode harnesses 2. When the staff accidentally pulls the positive and negative electrode harnesses 2 while disassembling or repairing the lithium battery pack 1, the positive and negative electrode harnesses 2 drive the slider 34 on the positioning plate 36 to squeeze the telescopic spring 313 through the limiting groove 32 and the fixing rod 33. At this time, the extra section of the positive and negative electrode harnesses 2 between the positioning plate 36 and the lithium battery pack 1 will be straightened. Then, the positive and negative electrode harnesses 2 will return to their original position through the reaction force of the telescopic spring 313, thereby preventing the connection between the positive and negative electrode harnesses 2 and the lithium battery pack 1 from breaking when the staff pulls on them, thus providing a safety protection function.

[0036] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A short-circuit protection structure for consumer lithium batteries, characterized in that, The lithium battery pack (1) is provided with positive and negative electrode wire harnesses (2) and a protective component (3) is provided on the lithium battery pack (1) to protect the positive and negative electrode wire harnesses (2). The protective component (3) includes a limiting frame (31), a groove (32), a fixing rod (33), a slider (34), a limiting groove (35), a positioning plate (36), a fixing groove (37), a fixing block (38), an arc groove (39), a threaded hole (310), a bolt (311), a limiting window (312), and a telescopic spring (313). The limiting frame (31) is mounted on the lithium battery pack (1). The groove (32) is formed on the inner wall of the limiting frame (31). The fixing rod (33) is formed on the inner wall of the groove (32). The slider (34) is fitted onto the fixing rod (33) and is slidably connected to the inner wall of the groove (32). The limiting groove (35) is formed on the slider. (34) The positioning plate (36) is located inside the limiting frame (31), the fixing groove (37) is opened on the positioning plate (36), the fixing block (38) is located on the inner wall of the fixing groove (37) and is slidably connected to the inner wall of the limiting groove (35), the arc groove (39) is opened on the positioning plate (36), the threaded hole (310) is opened on the positioning plate (36), the bolt (311) is threadedly connected to the threaded hole (310), the limiting window (312) is opened on the limiting frame (31), the telescopic spring (313) is located between the inner wall of the groove (32) and the slider (34) and is sleeved on the fixing rod (33).

2. The short-circuit protection structure for consumer lithium batteries according to claim 1, characterized in that, The arc groove (39) is semi-circular in shape, and there are multiple arc grooves (39). The multiple arc grooves (39) are spliced ​​together to form a circle.

3. The short-circuit protection structure for consumer lithium batteries according to claim 1, characterized in that, The number of bolts (311) is multiple, and there is a gap between the multiple bolts (311).

4. The short-circuit protection structure for consumer lithium batteries according to claim 1, characterized in that, The limiting window (312) is located directly above the threaded hole (310).

5. The short-circuit protection structure for consumer lithium batteries according to claim 1, characterized in that, The lithium battery pack (1) has a side ear (4) on its outer side, and there are multiple side ears (4).

6. The short-circuit protection structure for consumer lithium batteries according to claim 1, characterized in that, The output end of the positive and negative wire harness (2) is provided with an insulating protective sleeve (5).

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