Explosion-proof lithium battery

Abstract

The utility model discloses an explosion-proof lithium battery, which relates to the technical field of lithium batteries and comprises a lithium battery body, the upper end and the lower end of the lithium battery body are respectively provided with a sealing plate with a through hole, each sealing plate is of a hexagonal structure, and a plurality of connecting structures are arranged between the two sealing plates in an array mode. A sliding plate is connected between every two adjacent connecting structures in a sliding mode, an arc-shaped rubber protection layer is installed outside each sliding plate, the multiple rubber protection layers are combined into a complete circle, and the sliding plates and the connecting structures are tightly attached to the lithium battery body. By arranging a series of structures, when the lithium battery body explodes, the connecting structure can be matched with the rubber protection layer to achieve a certain buffering effect, so that the possible injury to a user is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to lithium battery technical field, concretely is a kind of explosion-proof lithium battery. BACKGROUND

[0002] Lithium battery is with lithium metal or lithium alloy as anode material, using non-aqueous electrolyte solution battery.

[0003] The surface of existing lithium battery is wrapped by metal shell, to avoid the internal material of lithium battery exposed to outside environment, when there is risk factor such as thermal runaway, diaphragm damage or battery manufacturing defect, simple metal shell is difficult to timely remind user when lithium battery has explosion hazard. UTILITARIAN CONTENT

[0004] The utility model aims at providing a kind of explosion-proof lithium battery, to solve the problem raised in the above background.

[0005] To achieve the above object, the utility model provides the following technical scheme: a kind of explosion-proof lithium battery, including lithium battery body, the upper and lower ends of the lithium battery body are equipped with one sealing plate with through hole, the sealing plate is hexagonal structure, multiple connecting structures are installed in the position array between two sealing plates, sliding plate is slidably connected between adjacent two connecting structures, the outside of sliding plate is equipped with arc rubber protective layer, multiple rubber protective layers are combined into a complete circle, and the sliding plate, connecting structure are closely attached with lithium battery body.

[0006] Preferably, the outer surface of the sealing plate is provided with a clamping groove, and the inner side of the rubber protective layer is provided with a clamping block matched with the clamping groove.

[0007] Preferably, the end of the sealing plate away from the connecting structure is threadedly connected with multiple locking bolts, and the locking bolts penetrate the sealing plate and are threadedly connected with one end of the connecting structure.

[0008] Preferably, the connecting structure includes a connecting block, a sleeve ring, a sliding column and a sliding groove, the two connecting blocks at the uppermost end and the lowermost end are connected with the sealing plate, a sliding column is installed at the upper and lower ends of each of the other connecting blocks, a sleeve ring is slidably sleeved on the surfaces of the two sliding columns, and a sliding groove is formed on the left and right sides of the connecting block.

[0009] Preferably, a cavity matched with the sliding column is formed in the inside of the sleeve ring, a limiting ring is installed at the opening of each end of the cavity, a limiting disc is installed at one end of the sliding column inside the sleeve ring, and the size of the limiting disc is larger than that of the sliding column.

[0010] Preferably, the left and right ends of the sliding plate are provided with a plurality of sliding blocks, and the sliding blocks are matched with the sliding grooves in size.

[0011] Compared with the prior art, the utility model has the beneficial effects that:

[0012] The explosion-proof lithium battery is provided with a slidable sliding plate outside the lithium battery body, the sliding plate can slide between two connecting structures, when the surface of the lithium battery body has a convex part with explosion hazards, the sliding plate slides outward, and then extrudes the rubber protection layer outward, the rubber protection layer has a certain bending capacity, when the user finds that the rubber protection layer is irregularly bent, the corresponding lithium battery should be stopped from being used, and a certain warning effect is achieved, and the connecting structure has a certain stretching capacity, when the lithium battery body explodes, the connecting structure can cooperate with the rubber protection layer to achieve a certain buffering effect, and then the harm that the user may suffer is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is a structural schematic view of the whole structure of the utility model;

[0014] Figure 2 It is a structural schematic view of the connecting structure and the locking bolt of the utility model;

[0015] Figure 3 It is a structural schematic view of the connecting structure of the utility model;

[0016] Figure 4 It is a structural schematic view of the connecting structure and the sliding plate of the utility model;

[0017] Figure 5 It is a structural schematic view of the limiting ring and the limiting disc of the utility model.

[0018] In the drawing: 1, lithium battery body; 2, sealing plate; 3, rubber protection layer; 4, locking bolt; 5, clamping groove; 6, connecting structure; 601, connecting block; 602, sleeve ring; 603, sliding column; 604, sliding groove; 7, sliding plate; 8, sliding block; 9, limiting ring; 10, limiting disc. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0020] In the description of the utility model, it is necessary to explain that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate the position relationship based on the position relationship shown in the drawing, and are only for the convenience of describing the utility model and simplifying the description, and cannot be understood as indicating or implying that the indicated device or element must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the utility model. In addition, the terms "first" and "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0021] As shown in Figures 1 to 5 The explosion-proof lithium battery of the embodiment includes a lithium battery body 1, an end plate 2 with a through hole is installed at both upper and lower ends of the lithium battery body 1, the through hole of the end plate 2 is larger than the positive and negative poles of the conventional lithium battery body 1, the end plate 2 is a hexagonal structure, a plurality of connecting structures 6 are installed at positions between the two end plates 2, the plurality of connecting structures 6 are respectively located at lower ends of six corners of the end plate 2, the upper and lower ends of the plurality of connecting structures 6 are closed by the two end plates 2, a sliding plate 7 is slidably connected between adjacent two connecting structures 6, the sliding plate 7 can slide between the two connecting structures 6, an arc-shaped rubber protection layer 3 is installed outside the sliding plate 7, the rubber protection layer 3 has a certain bending capacity, a plurality of rubber protection layers 3 are combined into a complete circle, part of the lithium batteries commonly seen on the market are circular, a complete circle is combined by the plurality of rubber protection layers 3 to conform to the shape of the lithium battery on the market, the sliding plate 7 and the connecting structure 6 are closely attached to the lithium battery body 1, when a convex with explosion hazards appears on the surface of the lithium battery body 1, the sliding plate 7 will slide outward, thereby extruding the rubber protection layer 3 outward, the rubber protection layer 3 has a certain bending capacity, when the user finds that the rubber protection layer 3 is irregularly bent, the corresponding lithium battery should be stopped using, thereby playing a certain warning role.

[0022] Specifically, a clamping groove 5 is formed on the outer side surface of the end plate 2, a clamping block matched with the clamping groove 5 is installed on the inner side of the upper and lower parts of the rubber protection layer 3, the clamping block and the clamping groove 5 are used in cooperation, thereby installing the rubber protection layer 3 outside the two end plates 2, when the rubber protection layer 3 falls off or the middle part of the rubber protection layer 3 is convex, the user should stop using the lithium battery body 1 in time.

[0023] Further, a plurality of locking bolts 4 are threadedly connected to one end of the end plate 2 away from the connecting structure 6, the locking bolts 4 penetrate the end plate 2 and are threadedly connected to one end of the connecting structure 6, the end plate 2 and the connecting structure 6 are threadedly connected together by the plurality of locking bolts 4.

[0024] Further, the connecting structure 6 comprises a connecting block 601, a sleeve ring 602, a sliding column 603 and a sliding groove 604, the two connecting blocks 601 at the uppermost end and the lowermost end are connected with the sealing plate 2, the upper and lower ends of the other connecting blocks 601 are both provided with a sliding column 603, the surfaces of the two sliding columns 603 are both provided with a sleeve ring 602 in a sleeving mode, the left and right sides of the connecting block 601 are both provided with a sliding groove 604, the inside of the sleeve ring 602 is provided with a cavity matched with the sliding column 603, the two ends of the cavity are both provided with a limiting ring 9, one end of the sliding column 603 inside the sleeve ring 602 is provided with a limiting disc 10, the size of the limiting disc 10 is larger than that of the sliding column 603, the left and right ends of the sliding plate 7 are both provided with a plurality of sliding blocks 8, the size of the sliding block 8 is matched with that of the sliding groove 604, under the normal state, the connecting structure 6 is in a relatively stable state under the limitation of the two sealing plates 2, when the lithium battery body 1 explodes and further generates a certain impact force, at this time, the connecting blocks 601 will move irregularly under the action of the impact force, when the two connecting blocks 601 move away, the sliding column 603 will slide outward in the inside of the sleeve ring 602, when the limiting ring 9 and the limiting disc 10 contact, a certain reverse impact force will be generated, thereby offsetting and buffering the impact force generated by the explosion, cooperating with the rubber protection layer 3 to play a certain buffering effect, thereby reducing the harm that the user may suffer.

[0025] The use method of the embodiment is that the sliding plate 7 is installed outside the lithium battery body 1, the sliding plate 7 can slide between the two connecting structures 6, when the surface of the lithium battery body 1 has an explosion hidden danger protrusion, the sliding plate 7 will slide outward, thereby extruding the rubber protection layer 3 outward, the rubber protection layer 3 has a certain bending capacity, when the user finds that the rubber protection layer 3 is irregularly bent, the corresponding lithium battery should be stopped for use, thereby playing a certain warning effect, and the connecting structure 6 has a certain stretching capacity, after the lithium battery body 1 explodes, the connecting structure 6 can cooperate with the rubber protection layer 3 to play a certain buffering effect, thereby reducing the harm that the user may suffer.

[0026] Finally, it should be noted that: the above only describes the preferred embodiments of the present application and is not intended to limit the present application, although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments or make equivalent replacement for some technical features. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. An explosion-proof lithium battery comprising a lithium battery body (1), characterized in that: The upper and lower ends of the lithium battery body (1) are provided with an end plate (2) with a through hole, the end plate (2) is a hexagonal structure, a plurality of connecting structures (6) are arranged between the two end plates (2), a sliding plate (7) is slidably connected between two adjacent connecting structures (6), an arc-shaped rubber protective layer (3) is arranged on the outer side of the sliding plate (7), a plurality of rubber protective layers (3) are combined into a complete circle, and the sliding plate (7) and the connecting structure (6) are tightly attached to the lithium battery body (1).

2. The explosion-proof lithium battery of claim 1, wherein: The outer side surface of the end plate (2) is provided with a clamping groove (5), and the inner side of the rubber protective layer (3) is provided with a clamping block (5) matched with the clamping groove (5).

3. The explosion-proof lithium battery of claim 1, wherein: The end plate (2) is provided with a plurality of locking bolts (4) at the end away from the connecting structure (6), the locking bolts (4) penetrate the end plate (2) and are threadedly connected with one end of the connecting structure (6).

4. The explosion-proof lithium battery of claim 1, wherein: The connecting structure (6) comprises a connecting block (601), a sleeve ring (602), a sliding column (603) and a sliding groove (604), the uppermost and lowermost two connecting blocks (601) are connected with the end plate (2), the upper and lower ends of the other connecting blocks (601) are provided with a sliding column (603), the surfaces of the two sliding columns (603) are slidably provided with a sleeve ring (602), and the left and right sides of the connecting block (601) are provided with a sliding groove (604).

5. The explosion-proof lithium battery of claim 4, wherein: The inside of the sleeve ring (602) is provided with a cavity matched with the sliding column (603), the two ends of the cavity are provided with a limiting ring (9), one end of the sliding column (603) inside the sleeve ring (602) is provided with a limiting disc (10), and the size of the limiting disc (10) is larger than that of the sliding column (603).

6. The explosion-proof lithium battery of claim 4, wherein: The left and right ends of the sliding plate (7) are provided with a plurality of sliding blocks (8), and the size of the sliding block (8) is matched with that of the sliding groove (604).

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